CN102417618A - 40-degree natural rubber and production process thereof - Google Patents
40-degree natural rubber and production process thereof Download PDFInfo
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- CN102417618A CN102417618A CN2011103088788A CN201110308878A CN102417618A CN 102417618 A CN102417618 A CN 102417618A CN 2011103088788 A CN2011103088788 A CN 2011103088788A CN 201110308878 A CN201110308878 A CN 201110308878A CN 102417618 A CN102417618 A CN 102417618A
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- 238000004519 manufacturing process Methods 0.000 title abstract description 16
- 244000043261 Hevea brasiliensis Species 0.000 title abstract description 4
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- 229920001194 natural rubber Polymers 0.000 title abstract description 4
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- 230000001737 promoting effect Effects 0.000 claims description 15
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
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Abstract
The invention discloses 40-degree natural rubber and a production process thereof. The raw materials of the invention comprise: 50-60% of natural raw rubber, 0.5-2.5% of vulcanizing agent, 30-42% of medium-particle thermal cracking carbon black, 2.05-4.1% of active agent, 0.03-0.7% of accelerator, 0.55-3.2% of anti-aging agent and 1-2.2% of plasticizer, and the 40-degree natural rubber which is remarkably improved in the aspects of ageing resistance, elongation at break, wear resistance, rebound value, load bearing compression capacity, inherent frequency, production cost and the like is prepared through rubber drying, rubber breaking, secondary plastication and mixing.
Description
Technical field
The present invention relates to a kind of tree elastomer and production technique thereof, concrete, the present invention relates to a kind of 40 degree tree elastomer and production technique thereof.
Background technology
Tree elastomer refers to the rubber of from natural rubber yielding plant, producing.Tree elastomer be a kind of be the natural high moleculer eompound of staple with the TR 301, molecular formula is (C
5H
8)
n, in its composition 91%～94%, rubber hydrocarbon (TR 301), all the other are nonrubber materials such as protein, lipid acid, ash content, carbohydrate.Tree elastomer is to use the widest conventional rubber.
The tree elastomer rubber does not have certain fusing point, and normal temperature end band plasticity can slowly be softened along with temperature raises; Then softening fully during to 130～140 ℃; About 200 ℃, begin to decompose, then sharply decompose during to 270 ℃, reduce then hardening gradually to temperature; Temperature then becomes crumbly mass when hanging down to-70 ℃, and receiving the refrigerated rubber to be heated to normal temperature can restore to the original state.
Tree elastomer has good elasticity, and the elastic extension maximum can reach 1000%, and Young's modulus is 2～4MPa.
Simultaneously, tree elastomer has good mechanical intensity, and hysteresis loss is little, and living heat is low when repeatedly being out of shape, so its flexible resistance is also fine, and because be non-polar rubber, so electrical insulation capability is good.
Because unsaturated double-bond is arranged; So tree elastomer is the stronger material of a kind of chemical reaction ability; Light, heat, ozone, radiation, subdue distortion and metals such as copper, manganese and can both promote that the check surface of rubber, elasticity disappear, physical and mechanical properties reduces; Promptly aging, not ageing-resistant is the deadly defect of tree elastomer.
Because the elasticity of caouttchouc is excessive, therefore be difficult to be processed into various goods.Therefore, caouttchouc generally need be processed with calendering process through plasticating.Through plasticating, making rubber is the softish plastic state by tough snappiness state-transition, and makes its plasticity-homogenizing, so that make the uniform sizing material of quality; Mixing is with rubber mixing machine rubber or plasticate rubber and Synergist S-421 95 to be smelt the technology of rubber unvulcanizate, is the most important production technique of Rubber processing.Essence is Synergist S-421 95 homodisperse process in rubber, and Synergist S-421 95 is disperse phase, and rubber is external phase.Synergist S-421 95 mainly comprises in the mixing process: vulcanizing agent, promotor, strengthening agent, promoting agent, anti-aging agent, softening agent etc.
Rubber shock absorber is one of important use of rubber, is widely used in the precision equipment.The major advantage of rubber shock absorber is: 1, can process the goods of different shape and different hardness, have good elasticity and enough intensity; 2, can make very low that the natural frequency of vibrating isolation system does, and have higher damping; 3, no matter drawing, pressing, shearing and reversing under the stressing conditions, be out of shape all bigger.
Rubber is a kind of nonlinear resilient material, almost is incompressible.Only hour, just can be approx as linear body in distortion.The Young's modulus and the hardness of rubber are closely related, and receive the influence of temperature and shape again.The static modulus of elasticity E of rubber under the long-duration load effect
SIncrease with rubber hardness increases, and rubber hardness is between shore hardness 30～70HS, and the elastic modulus change scope is 0≤E
S＜4.Dynamic modulus E
dObtain through experiment, rubber hardness is between shore hardness 30～70HS, and the dynamic elastic modulus variation range is 0＜E
d≤10.The average of relatives value of the dynamic elastic modulus of rubber and static modulus of elasticity
n
dBe called performance coeffcient, n
dIt is more little good more to be worth.
Vibration isolator height and deflection relation are:
Δ＝(0.15～0.20)H
H＝(5～6.7)Δ
In above-mentioned scope, elastic modulus change is 5%.
The hardness of rubber is the significant parameter of decision rubber performance, considers from comprehensive angle, and the rubber that in vibration isolation, uses, we generally adopt shore hardness 40 degree～90 degree.
According to by total static load of vibration isolation object and used vibration isolator quantity, obtain the static load W (N) that each vibration isolator carries.Natural frequency f according to the vibration isolation system requirement
0(f
0Confirm by vibration isolation efficiency), obtain the vertical dynamic stiffness k that vibration isolator should have
Zd(N/cm)
K in the formula
ZdThe vertical dynamic stiffness of-single vibration isolator (N/cm);
The single vibration isolator static load of W-(N);
G-universal gravity constant is got g=9.8cm/s
2
According to the relation and the rubber hardness of dynamic and static modulus and rubber hardness, confirm the quiet rigidity k of vibration isolator
Zs
Generally speaking, can be calculated as follows
The horizontal rigidity of vibration isolator does
The dynamic shear modulus N/cm of G-in the formula
2,
S-vibration isolator Area of bearing;
H-vibration isolator height.
Confirm the vertical quiet Δ that becomes of vibration isolator geometrical dimension
The supporting area S of vibration isolator
CN 101906221A discloses a kind of super-thick soft rubber and preparation method.Its prescription comprises: tree elastomer 1#100, carbon black N330 5～40, Triple Pressed Stearic Acid 1～4, N-PA 0.75～2.5, N-sec.-propyl-N '-diphenyl-para-phenylene diamine 1～4, paraffin 58#1～4, talcum powder 5～40, sulphur 1.5～5, Natural manganese dioxide 2.5～7, zinc oxide 4～11, vulkacit D 0.75～2.5, solid coumarone 1～4, permanent white 10～60, Uniflex DBS 4～12, Stockholm tar 1.5～4.Tree elastomer 1# is plasticated to plasticity number 0.6～0.65, add other raw material blendings, process film aftershaping and sulfuration.Before sulfuration, be aided with the partial qualitative clamping, can once stablize moulding and obtain super-thick soft rubber.
CN 102067040A discloses a kind of vehicle vibration damping product and has used the high-damping rubber preparation raw material, relates to the rubber technology field, and its characteristic is following by mass parts: chlorinated butyl rubber, 100; Carbon black N220,10～40; Carbon black N330,20～50; NO H-3107,20～40; Anti-aging agent RD, 1～3; Antioxidant 4010NA, 1～3; Leveler 40MSF, 3～6; Indirect process zinc oxide, 5～10; Natural manganese dioxide, 0.1～0.5; Accelerant B Z, 1～5.
There is certain defective in the tree elastomer for preparing in the prior art at aspects such as resistance to deterioration, tensile yield, rebound value, wear resistance, carrying draught, natural frequencies, and the products production cost of a small amount of each item better performances is higher.
Summary of the invention
To the deficiency of prior art, one of the object of the invention is to provide a kind of 40 degree tree elastomers, and it all is significantly improved at aspects such as resistance to deterioration, wear resistance, carrying draught, natural frequencies, has lower production cost simultaneously.
40 degree tree elastomers according to the invention, its raw material comprises according to mass percent:
As preferred version, said 40 degree tree elastomers, it only is made up of according to mass percent following raw material:
The said components sum is 100%.
Preferred said 40 degree tree elastomers, form according to mass percent by following raw material:
The said components sum is 100%.
Said vulcanizing agent is preferably sulphur, organic sulfide, superoxide, MOX, benzoquinones, amine, a kind of or its mixture of further preferred sulphur, organic sulfide, preferred especially sulphur.
Said promoting agent preferably is made up of mineral-type promoting agent and organic type of promoting agent; Further preferably form by zinc oxide and Triple Pressed Stearic Acid; Especially preferably be made up of 1%～4% zinc oxide and 0.05%～0.4% Triple Pressed Stearic Acid, its quality percentage composition is the percentage composition in said raw material.
Said promotor is preferably thiazole accelerator, preferred especially 2-benzothiazolyl mercaptan.
Said anti-aging agent preferably is made up of N-PBNA and N-cyclohexyl-N '-diphenyl-para-phenylene diamine; Further preferably be made up of 0.05%～2.2%N-PBNA and 0.05%～1.2%N-cyclohexyl-N '-diphenyl-para-phenylene diamine, its quality percentage composition is the percentage composition in said raw material.
Said softening agent is preferably butter.
Further preferred said 40 degree tree elastomers, form according to mass percent by following raw material:
Rubber raw materials: caouttchouc 55.5%
Vulcanizing agent: sulphur 1.7%
Strengthening agent: middle medium thermal carbon blacks 36%
Promoting agent: zinc oxide 2.8%, Triple Pressed Stearic Acid 0.28%
Promotor: 2-benzothiazolyl mercaptan 0.35%
Anti-aging agent: N-PBNA 1.1%, N-cyclohexyl-N '-diphenyl-para-phenylene diamine 0.56%
Softening agent: butter 1.71%.
Sulphur according to the invention can be known product for SULPHUR POWDER, precipitated sulfur, colloid sulphur, insoluble sulfur etc., can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.
Medium thermal carbon blacks is made up of a large amount of spheries, oval charcoal and a small amount of welding particle in according to the invention; Have that particle diameter is big, specific surface area is little, structure is low, disperse easily and characteristics such as good fluidity; It can increase tensile yield and rebound value; And can shorten mixing time, and be the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.
The promoting agent that zinc oxide according to the invention and Triple Pressed Stearic Acid are formed, promoting agent the most frequently used when being the vulcanization system that employing sulphur-promotor is formed makes up.Wherein, said zinc oxide can be the special-purpose zinc oxide of rubber; Said Triple Pressed Stearic Acid, i.e. octadecanoic acid, molecular formula C
18H
36O
2Said zinc oxide and Triple Pressed Stearic Acid are the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.
2-benzothiazolyl mercaptan according to the invention, another name: captax is a kind of main acid cure agent, has MC speed.Its curing temperature is low, in rubber, is prone to disperse, do not pollute, and is mainly used in and makes tire, adhesive tape, rubber overshoes and other industrial rubber articles, and its chemical structural formula is:
Said 2-benzothiazolyl mercaptan is the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.
N-PBNA according to the invention, another name: antioxidant D, be light grey powder, effective to heat, oxygen, fatigue aging, its chemical structural formula is:
Said N-PBNA is the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.
N-cyclohexyl-N ' according to the invention-diphenyl-para-phenylene diamine, another name: antioxidant 4010 is bright grey powder; Ozone and fatigue aging there is special efficacy; Also very effective to wearing out of oxygen, heat, light and metals ion, be called as " all-round anti-aging agent ", its chemical structural formula is:
Said N-cyclohexyl-N '-diphenyl-para-phenylene diamine is the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.
Butter according to the invention belongs to tenderizer again, and carbon black is evenly distributed fast, can improve flexibility, heat distortion property, the snappiness of rubber; Improve the rubber glossiness; Plasticizing efficiency is high, and intermiscibility is good, is difficult for oxidation and volatilization; Be the existing procucts of affiliated technical field, can commercially availablely obtain or obtain according to the preparation method of prior art/new technology.
40 degree tree elastomers of the present invention; Can add other additives as required; For example scorch retarder, pigment etc., it all is known technologies of affiliated technical field, the person of ordinary skill in the field is according to its knowledge of grasping; Can freely select suitable additive as required, the present invention details no longer at this point.
Another object of the present invention is to provide the production technique of 40 degree tree elastomers.
The production technique of said 40 degree tree elastomers may further comprise the steps:
(1) drying glue: the caouttchouc of the regulation of will filling a prescription places under 30～70 ℃ drying glue at least 3 hours;
(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.3mm～0.9mm when breaking glue;
(3) plasticate for the first time: caouttchouc is divided at least 3 equal portions, and every part of weight is no more than 20kg.Roll spacing is 0.3mm to 0.9mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 10 to 18 times continuously;
(4) park at least 3 hours after, carry out plasticating the second time.Plasticating for the second time still is that roll spacing is adjusted into 0.3mm to 0.9mm, and clot is also turned 90 ° and plasticated continuous mistake roller 10 to 18 times following time.After parking at least 3 hours, the calendering process of being allowed for access;
(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, and behind complete evenly bag roller, promoting agent and anti-aging agent mixing with the prescription regulation divide 2 addings at least.After roller at least 2 times; It is uniformly dispersed; At least divide the middle medium thermal carbon blacks and the softening agent that add the prescription regulation for 2 times in turn afterwards, the mixing even back of middle medium thermal carbon blacks and softening agent adds the promotor of prescription regulation, adds the vulcanizing agent of prescription regulation at last.
As preferred version, in the step (1), caouttchouc placed carry out drying glue in the baking oven, preferred 40～60 ℃ of drying glue temperature; Preferably at least 4 hours drying glue time;
In the step (2), roll spacing is preferably 0.4mm～0.8mm when breaking glue, is preferably 0.5mm～0.7mm especially.
In the step (3), preferably caouttchouc is divided into 3 equal portions.
In the step (3), behind the preferred five equilibrium, every part of caouttchouc weight is no more than 18kg, further preferably is no more than 16kg, especially preferably is no more than 15kg.
In the step (3), preferred roll spacing is 0.4mm to 0.8mm, and preferred especially roll spacing is 0.5mm to 0.7mm.
In the step (3), preferred continuous roller 11 to 17 times of crossing, preferred especially continuous roller 12 to 15 times of crossing.
In the step (4), before carrying out plasticating the second time, preferably parked at least 4 hours.
In the step (4), the preferred roll spacing of plasticating for the second time is 0.4mm to 0.8mm, and preferred especially roll spacing is 0.5mm to 0.7mm.
In the step (4), preferred continuous roller 11 to 17 times of crossing, preferred especially continuous roller 12 to 15 times of crossing.
In the step (4), after plasticating for the second time, preferably park at least 4 hours after, further preferably be no more than 12 days, especially preferably be no more than 10 days, get into calendering process then.Preferably that the storage period is long rubber is plasticated again.
In the step (5), mixed promoting agent and anti-aging agent preferably divide 3 addings, preferred especially 3 times at least.
In the step (5), preferred roller excessively 2～4 times, preferred especially roller excessively 2～3 times.
In the step (5), middle medium thermal carbon blacks and softening agent preferably divide 3 addings, preferred especially 3 times at least.
Said 40 degree tree elastomers are preferred for making rubber shock absorber.
The prepared 40 degree tree elastomers of the present invention adopt caouttchouc to make raw material, therefore have higher intensity, extensibility; Through the selection of adjustment sooty add-on and carbon black types, change rubber hardness and elasticity, so that its rubber that has than prior art for preparing has better carrying draught and natural frequency; The tree elastomer of the preparation of the present invention simultaneously all is significantly increased at aspects such as resistance to deterioration, tensile yield, wear resistance, rebound values, and surface cleaning, and pliability is better, and has lower production cost, has significant advantage.
Description of drawings
Fig. 1 is the quiet rigidity test result of Comparative Examples one U.S. U Company products RA1500EMA
Fig. 2 is the quiet rigidity test result of tree elastomer of Comparative Examples two preparations
Fig. 3 is the quiet rigidity test result of tree elastomer of Comparative Examples three preparations
Fig. 4 is the quiet rigidity test result of the tree elastomer of embodiment one preparation
Embodiment
For ease of understanding the present invention, it is following that the present invention enumerates embodiment.Those skilled in the art should understand, and said embodiment helps to understand the present invention, should not be regarded as concrete restriction of the present invention.
Comparative Examples one
U.S. U Company products RA1500EMA to representing prior art carries out quiet rigidity test.
Fig. 1 is the quiet rigidity test result of Comparative Examples one U.S. U Company products RA1500EMA.
This kind rubber each item performance is all than more excellent, but production cost is higher, has restricted it and has promoted the use of.
Comparative Examples two
Spend tree elastomers according to following steps preparation 40:
(1) takes by weighing caouttchouc 65g, spray carbon black 21g, sulphur 7g, zinc oxide 2.8g, Triple Pressed Stearic Acid 0.28g, 2-benzothiazolyl mercaptan 0.58g, anti-aging agent: N-PBNA 1.11g, N-cyclohexyl-N '-diphenyl-para-phenylene diamine 0.56g, butter 1.67g.
(2) make 40 degree tree elastomers according to production technique disclosed by the invention.
Fig. 2 is the quiet rigidity test result of tree elastomer of Comparative Examples two preparations.
The quiet rigidity test result of RA1500EMA in this test-results and the Comparative Examples one is compared and can know, both performances are very approaching, but this Comparative Examples product carrying draught is bigger, explains that vulcanized rubber is soft partially.So revise the scheme of rubber compounding is to reduce sulfur consumption, increases carbon black loading, carries draught to reduce rubber.
Comparative Examples three
Spend tree elastomers according to following steps preparation 40:
(1) takes by weighing tree elastomer 55.5g, sulphur 1.67g, spray carbon black 36.1g, zinc oxide 2.8g, Triple Pressed Stearic Acid 0.28g, 2-benzothiazolyl mercaptan 0.33g, N-PBNA 1.11g, N-cyclohexyl-N '-diphenyl-para-phenylene diamine 0.56g, butter 1.67g.
(2) make 40 degree tree elastomers according to production technique disclosed by the invention.
Fig. 3 is the quiet rigidity test result of tree elastomer of Comparative Examples three preparations.
The quiet rigidity test result of RA1500EMA in this test-results and the Comparative Examples one is compared and can know; This Comparative Examples product draught is than the big 0.6～1.1mm of RA1500EMA; The little about 1.0Hz of natural frequency, promptly the vibration isolation efficiency of this product is superior to Comparative Examples one product under identical load.But because draught is bigger, do not meet request for utilization, therefore need further to improve, promptly change carbon black types.
Embodiment one
Prepare 40 degree tree elastomers of the present invention according to following steps:
(1) drying glue: the 55.5g caouttchouc is placed in the baking oven under 60 ℃ drying glue 4 hours;
(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.5mm when breaking glue;
(3) plasticate for the first time: caouttchouc is divided into 3 equal portions, and every part of weight is 18.5kg.Roll spacing is 0.5mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 12 times continuously;
(4) park 4 hours after, carry out plasticating the second time.The roll spacing of plasticating for the second time is adjusted into 0.5mm, and clot is also turned 90 ° and plasticated continuous mistake roller 12 times following time.After parking 4 hours, get into calendering process;
(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, after fully evenly wrapping roller, 2.8g zinc oxide, 0.28g Triple Pressed Stearic Acid, 1.1g N-PBNA, 0.56g N-cyclohexyl-N '-diphenyl-para-phenylene diamine is mixed, and divides 3 addings.After roller 3 times, it is uniformly dispersed, add medium thermal carbon blacks and 1.71g butter among the 36g afterwards for 3 times in turn, the mixing even back of middle medium thermal carbon blacks and butter adds 0.35g 2-benzothiazolyl mercaptan, adds 1.7g sulphur at last.
Fig. 4 is the quiet rigidity test result of the tree elastomer of embodiment one preparation.
Can know by test result; When this product was respectively 100kg and 200kg in load, one product RA1500EMA compared with Comparative Examples, and draught is big 0.3mm and 0.2mm respectively; High 0.6Hz of natural frequency and 2.1Hz, promptly the vibration isolation efficiency of this product is superior to Comparative Examples one product under identical load.
This product is used for the numerically-controlled precise machine, in use has relatively high expectations to carrying draught.The present embodiment product in use, product draught and RA1500EMA are very approaching, reach requirement basically.
Embodiment two
Prepare 40 degree tree elastomers of the present invention according to following steps:
(1) drying glue: the 50g caouttchouc is placed under 70 ℃ drying glue 3 hours;
(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.3mm when breaking glue;
(3) plasticate for the first time: caouttchouc is divided into 3 equal portions, and every part of weight is about 16.667kg.Roll spacing is 0.3mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 18 times continuously;
(4) park 5 hours after, carry out plasticating the second time.The roll spacing of plasticating for the second time is adjusted into 0.3mm, and clot is also turned 90 ° and plasticated continuous mistake roller 18 times following time.After parking 5 hours, get into calendering process;
(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, and after fully evenly wrapping roller, with 3.45g zinc oxide, 0.2g Triple Pressed Stearic Acid, 2.2g N-PBNA, 1g N-cyclohexyl-N '-diphenyl-para-phenylene diamine mix, and divide 5 addings.After roller 4 times, it is uniformly dispersed, to divide afterwards to add medium thermal carbon blacks and 1g butter among the 41.62g for 5 times in turn, the mixing even back of middle medium thermal carbon blacks and butter adds 0.03g 2-benzothiazolyl mercaptan, adds 0.5g sulphur at last.
Embodiment three
Prepare 40 degree tree elastomers of the present invention according to following steps:
(1) drying glue: the 59.95g caouttchouc is placed under 30 ℃ drying glue 5 hours;
(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.9mm when breaking glue;
(3) plasticate for the first time: caouttchouc is divided into 3 equal portions, every part of weight 19.98kg.Roll spacing is 0.9mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 10 times continuously;
(4) park 4 hours after, carry out plasticating the second time.The roll spacing of plasticating for the second time is adjusted into 0.9mm, and clot is also turned 90 ° and plasticated continuous mistake roller 10 times following time.After parking 4 hours, get into calendering process;
(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, after fully evenly wrapping roller, 3.75g zinc oxide, 0.35g Triple Pressed Stearic Acid, 0.5g N-PBNA, 0.05g N-cyclohexyl-N '-diphenyl-para-phenylene diamine is mixed, and divides 2 addings.After roller 2 times, it is uniformly dispersed, to divide afterwards to add medium thermal carbon blacks and 2.2g butter among the 30g for 2 times in turn, the mixing even back of middle medium thermal carbon blacks and butter adds 0.7g 2-benzothiazolyl mercaptan, adds 2.5g sulphur at last.
Embodiment four
Prepare 40 degree tree elastomers of the present invention according to following steps:
(1) drying glue: the 52g caouttchouc is placed under 40 ℃ drying glue 4 hours;
(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.7mm when breaking glue;
(3) plasticate for the first time: caouttchouc is divided into 4 equal portions, every part of weight 13kg.Roll spacing is 0.7mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 15 times continuously;
(4) park 4 hours after, carry out plasticating the second time.The roll spacing of plasticating for the second time is 0.7mm, and clot is also turned 90 ° and plasticated continuous mistake roller 17 times following time.After parking 8 days, get into calendering process;
(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, after fully evenly wrapping roller, 2g zinc oxide, 0.35g Triple Pressed Stearic Acid, 1.5gN-PBNA, 0.3gN-cyclohexyl-N '-diphenyl-para-phenylene diamine is mixed, and divides 3 addings.After roller 3 times, it is uniformly dispersed, to divide afterwards to add medium thermal carbon blacks and 1.9g butter among the 39.75g for 3 times in turn, the mixing even back of middle medium thermal carbon blacks and butter adds the 0.2g2-benzothiazolyl mercaptan, adds 2g sulphur at last.
Comparative example and Comparative Examples can be known; The present invention adopts unique formula combination, makes each item performance of 40 degree tree elastomers compared to prior art, has all obtained significantly progressive; And production cost reduces greatly, has solved the unsolved always technical barrier of prior art.
Applicant's statement; The present invention explains detailed process equipment of the present invention and technical process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technical process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technical process could be implemented.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (10)
1. spend tree elastomer for one kind 40, its raw material comprises according to mass percent:
2. 40 degree tree elastomers as claimed in claim 1 is characterized in that it only is made up of according to mass percent following raw material:
The said components sum is 100%.
3. 40 degree tree elastomers as claimed in claim 1 is characterized in that it is made up of according to mass percent following raw material:
The said components sum is 100%.
4. like each described 40 degree tree elastomers of claim 1-3; It is characterized in that; Said vulcanizing agent is sulphur, organic sulfide, superoxide, MOX, benzoquinones, amine, a kind of or its mixture of preferred sulphur, organic sulfide, preferred especially sulphur;
Said promoting agent is made up of mineral-type promoting agent and organic type of promoting agent, preferably is made up of zinc oxide and Triple Pressed Stearic Acid, especially preferably is made up of 1%～4% zinc oxide and 0.05%～0.4% Triple Pressed Stearic Acid, and its quality percentage composition is the percentage composition in said raw material;
Said promotor is thiazole accelerator, preferred 2-benzothiazolyl mercaptan;
Said anti-aging agent is made up of N-PBNA and N-cyclohexyl-N '-diphenyl-para-phenylene diamine; Preferably be made up of 0.05%～2.2%N-PBNA and 0.05%～1.2%N-cyclohexyl-N '-diphenyl-para-phenylene diamine, its quality percentage composition is the percentage composition in said raw material;
Said softening agent is a butter.
5. 40 degree tree elastomers as claimed in claim 1 is characterized in that it is made up of according to mass percent following raw material:
Rubber raw materials: caouttchouc 55.5%
Vulcanizing agent: sulphur 1.7%
Strengthening agent: middle medium thermal carbon blacks 36%
Promoting agent: zinc oxide 2.8%, Triple Pressed Stearic Acid 0.28%
Promotor: 2-benzothiazolyl mercaptan 0.35%
Anti-aging agent: N-PBNA 1.1%, N-cyclohexyl-N '-diphenyl-para-phenylene diamine 0.56%
Softening agent: butter 1.71%.
6. like the preparation method of the described 40 degree tree elastomers of claim 1-5, may further comprise the steps:
(1) drying glue: the caouttchouc of the regulation of will filling a prescription places under 30～70 ℃ drying glue at least 3 hours;
(2) broken glue: the caouttchouc after the drying glue breaks glue immediately.Roll spacing is 0.3mm～0.9mm when breaking glue;
(3) plasticate for the first time: caouttchouc is divided at least 3 equal portions, and every part of weight is no more than 20kg.Roll spacing is 0.3mm to 0.9mm, requires clot and turns 90 ° and plasticate for following time.Cross roller 10 to 18 times continuously;
(4) park at least 3 hours after, carry out plasticating the second time.Plasticating for the second time still is that roll spacing is adjusted into 0.3mm to 0.9mm, and clot is also turned 90 ° and plasticated continuous mistake roller 10 to 18 times following time.After parking at least 3 hours, the calendering process of being allowed for access;
(5) mixing: the virgin rubber that will plasticate is put into mill, makes its bag roller, and behind complete evenly bag roller, promoting agent and anti-aging agent mixing with the prescription regulation divide 2 addings at least.After roller at least 2 times; It is uniformly dispersed; At least divide the middle medium thermal carbon blacks and the softening agent that add the prescription regulation for 2 times in turn afterwards, the mixing even back of middle medium thermal carbon blacks and softening agent adds the promotor of prescription regulation, adds the vulcanizing agent of prescription regulation at last.
7. method as claimed in claim 6 is characterized in that, in the step (1), caouttchouc is placed carry out drying glue in the baking oven, 40～60 ℃ of drying glue temperature; At least 4 hours drying glue time;
In the step (2), roll spacing is 0.4mm～0.8mm when breaking glue, is preferably 0.5mm～0.7mm especially.
8. method as claimed in claim 6 is characterized in that, in the step (3), caouttchouc is divided into 3 equal portions;
In the step (3), behind the five equilibrium, every part of caouttchouc weight is no more than 18kg, further preferably is no more than 16kg, especially preferably is no more than 15kg;
In the step (3), roll spacing is 0.4mm to 0.8mm, and preferred especially roll spacing is 0.5mm to 0.7mm;
In the step (3), continuous roller excessively 11 to 17 times, preferred especially continuous roller 12 to 15 times of crossing.
9. method as claimed in claim 6 is characterized in that, in the step (4), before carrying out plasticating the second time, parks at least 4 hours;
In the step (4), the roll spacing of plasticating for the second time is 0.4mm to 0.8mm, and preferred especially roll spacing is 0.5mm to 0.7mm;
In the step (4), continuous roller excessively 11 to 17 times, preferred especially continuous roller 12 to 15 times of crossing;
In the step (4), after plasticating for the second time, park at least 4 hours after, further preferably be no more than 12 days, especially preferably be no more than 10 days, get into calendering process then, preferably that the storage period is long rubber is plasticated again;
In the step (5), mixed promoting agent and anti-aging agent divide 3 addings, preferred especially 3 times at least;
In the step (5), preferred roller excessively 2～4 times, preferred especially roller excessively 2～3 times;
In the step (5), middle medium thermal carbon blacks and softening agent preferably divide 3 addings, preferred especially 3 times at least.
10. like the purposes of each described 40 degree tree elastomers of claim 1-9, it is characterized in that, be used to make rubber shock absorber.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467784A (en) * | 2012-06-06 | 2013-12-25 | 安徽华晶机械股份有限公司 | Method for manufacturing vibration isolator |
| CN104816393A (en) * | 2015-03-31 | 2015-08-05 | 陈巧兰 | Production method of automobile steering wheel rubber sleeve |
| CN105694131A (en) * | 2016-04-12 | 2016-06-22 | 青岛思锐科技有限公司 | Low-hysteresis rubber composition for journal box rubber springs and preparation method of low-hysteresis rubber composition |
| CN106939090A (en) * | 2017-01-23 | 2017-07-11 | 宁波捷豹振动控制系统有限公司 | Engine mounting sizing material and preparation method thereof |
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| CN101955598A (en) * | 2010-09-27 | 2011-01-26 | 上海众力汽车部件有限公司 | Rubber formula with low ratio of dynamic stiffness and static stiffness and preparation method thereof |
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| CN101955598A (en) * | 2010-09-27 | 2011-01-26 | 上海众力汽车部件有限公司 | Rubber formula with low ratio of dynamic stiffness and static stiffness and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467784A (en) * | 2012-06-06 | 2013-12-25 | 安徽华晶机械股份有限公司 | Method for manufacturing vibration isolator |
| CN103467784B (en) * | 2012-06-06 | 2015-05-20 | 安徽华晶机械股份有限公司 | Method for manufacturing vibration isolator |
| CN104816393A (en) * | 2015-03-31 | 2015-08-05 | 陈巧兰 | Production method of automobile steering wheel rubber sleeve |
| CN105694131A (en) * | 2016-04-12 | 2016-06-22 | 青岛思锐科技有限公司 | Low-hysteresis rubber composition for journal box rubber springs and preparation method of low-hysteresis rubber composition |
| CN105694131B (en) * | 2016-04-12 | 2018-01-30 | 青岛思锐科技有限公司 | Axle box rubber spring low hysteresis sizing composition and preparation method thereof |
| CN106939090A (en) * | 2017-01-23 | 2017-07-11 | 宁波捷豹振动控制系统有限公司 | Engine mounting sizing material and preparation method thereof |
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