JPS6082171A - Lining method of polyurethane elastomer - Google Patents

Abstract

PURPOSE:To improve water resistance and adhesive strength by coating a compsn. consisting of a resol type phenolic resin and polyvinyl butyral as a primer on a metallic surface and drying the compsn. then coating a curing type polyurethane elastomer and curing the same. CONSTITUTION:A compsn. consisting of 90-60pts.wt. a resol type phenolic resin and 10-40pts.wt. polyvinyl butyral is coated as a primer on a metallic surface and is dried. A compsn. consisting of 10-40pts.wt. a resol type phenolic resin and 90-60pts.wt. polyvinyl butyral is coated thereon and is dried and thereafter a curing type elastomer is coated thereon and is cured. The water resistance and adhesive strength are improved if the polyurethane elastomer is lined on the metallic surface in the above-mentioned way.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for lining a polyurethane elastomer, that is, a method for laminating a polyurethane elastomer and a metal elastomer. The present invention is particularly effective when lining a manuscript surface with a polyurethane elastomer.

Water resistance and ground contact strength are improved.

Cured polyurethane elastomer has mechanical properties.

Roll because of its excellent wear resistance and oil resistance.

Belts, solid tires and other traps are widely used.

In particular, recently, its wear resistance has been used to prevent the wear and tear of steel in sludge containing earth and sand, etc., in dredging work and mines.

The inner surfaces of hoppers, pumps, etc. are lined with polyurethane elastomer.

However, this lined product has a strong adhesion force when it is a round ball, but when used for one time in the presence of water, the contact force between polyurethane elastomer and metal (σ) is extremely low.
The lining is made of steel mento.

There was a problem with it coming up.

As a countermeasure for this σ), a method of distributing steel σ) table (self JVr-) using phenol DI) l) ¥, polyvinyl acetal, etc. as a climber has been used, but the effect is not sufficient.〇Non-inventor et al. conducted various studies with the aim of improving these drawbacks and maintaining water resistance strength, and as a result, they arrived at 1 wood-sized J.

That is, 1 the present invention is based on a composition consisting of gold kAL[I] [resol-type phenol as a primer, 1190 to 60 parts by weight, polyvinyl butyral 10 to 40 parts by weight, 11 L of polyvinyl butyral, dried with a cloth, and the L Resol type phenolic tree III
10~40 parts by weight, polyvinyl butyral 90~
After applying and drying a composition consisting of 60 parts by weight.

In the 1970s, the Vc-curing polyurethane elastomer was coated and cured using another coating method for polyurethane elastomers.

The resol type phenol 4M + fat used by Fuei Akira + cI history.

Are phenols such as phenol, cresol, butylphenol and aldehydes such as formaldehyde and paraformaldehyde? jAk Caustic soda, caustic acid 1 Presence of an alkaline medium such as raw potash, ammonia 1: React (+) with a mixture of phenol alcohols by a known method.
3I11 Usually used as an alcohol fB. Among these phenols, the most attractive compound for the present invention is phenol.

The polyvinyl butyral used in the present invention is a compound obtained by dividing polyvinyl alcohol into a butyral by reacting polyvinyl alcohol with butyraldehyde. Polyvinyl butyral having a vinyl butyral base of 75 M<:11i:% or more, a residual amount of vinyl alcohol groups of 18 to 22%, and a residual amount of vinyl acetate groups of 3% or less is suitable.

In the first layer of the primer of the present invention, the layer in contact with the metal is composed of a layer mainly composed of a resol type phenolic resin, and the layer in contact with the polyurethane elastomer is made of a polyvinyl butyral component. be. Is its favorable/unfavorable composition +4j? The layer in contact with '1lAL consists of 90 to 60 parts by weight of resol-type phenolic resin and 10 to 407 parts by weight of polyvinyl butyral, and the layer in contact with the polyurethane elastomer consists of 10 to 40 parts by weight of resol-type phenolic pattern fat and 90 parts by weight of polyvinyl butyral.
It consists of ~60 military units. If the ratio of both components falls outside this range, the water resistance and slip strength will decrease.

The resol-type phenol side fat and polyvinyl butyral of the present invention can be dissolved in a shoulder wall bath agent and used as needed. Examples of r-reagents include ketones such as acetone, methylethylgtone, and methylimptylgtone.

Alcohols such as methanol, ethanol, and isopropanol; esters such as ethyl acetate and butyl;
, toluene, xylene, trichlorethylene, methyl cellosolve alone! E or use a mixture of two or more buildings. In these solutions, the cresol type phenolic resin case or polyvinyl butyral Q) direct-to-l ratio is 3 to 3.
30 double and short chips are preferred.

′! The octopus bath t1 sentence also includes i'fJ (tsuru (as phosphorus enemy, P-toluenesulfone enemy) and 6≦add1-.
Wear.

There are 10 things such as aluminum, brass, copper, gun metal, stainless copper, tin, zinc, etc., and these are forged products and υJ metal products. , rolling, drawing, cutting, etc., and these shapes include round bars and vibrators.

It's okay to ask about one board violation.

The polyurethane elastomer of this 4+-mei is 1.For example, the fast-curing polyurethane elastomer described in No. 55-98221 is 1. These include polyurethane elastomer used for flooring, waterproofing, and ground cleaning, and cast polyurethane elastomer used for rolls, solid tires, etc.

Polyurethane elastomers are typically obtained from polyinsyanates and/or polyurethane prepolymers and curing agents that include crosslinking components. Examples of the polyisocyanate and/or polyurethane prepolymer include 2.4-tolylene diisocyanate, 2.6-tolylene diisocyanate),
2.Mixture of 4-1'lylene diincyanate and 2,6-tolylene diincyanate (65/35.80/2
0 (pojmu 1: ratio)] Didiphenylmethane diincyanate * Qj + Japanese product of liquid diphenylmethane diisocyanate, tolylene diinocyanate, polymethylene polyphenyl poly liquefied by various conventionally known methods such as Isocyanate (Japanese product of diphenylmethane diisocyanate) and other conventionally known aromatic polyincyanates, cyclohexylmethane diisocyanate, inphorone diisocyanate and other conventionally known alicyclic polyisocyanates, and/or mixtures of two or more of these various polyisocyanates. Isocyanate and various monomeric polyols such as trimethylolprobane, polytetramethylene ether glycol, each single-block polyether polyol containing 9 propylene oxide or propylene oxide and ethylene oxide TL, etc. Caprolactone polyol, various polyester polyols such as polyethylene adipate, 1,2-polybutadiene polyol, Hi-Schiff Mountain polyol, polyurethane prepolymers with so-called 6-poly7-polyols grafted with vinyl monomers. These prepolymers were added with colloidal silica or asbestos to improve their properties (σ)
You can also get +41.

Examples include ethylene glycol, diethylene glycol, and 1,4-butanediol. Monomeric polyols such as trimethylolpropane, 1jii polyether polyols, each 4 small polyester polyols, 4li polymer polyols, castor oil polyols, 3.
3'-Dichloro 04 * Aromatic polyamines such as 4'-diaminodiphenylmethane and 414'-diaminodiphenylmethane, or aromatic polyamines liquefied by dissolving them in an IC bath such as plasticizers and various polyether polyols. ! ■or a mixture of two or more yuzu σ) is used.

In addition, the curing agent may be a plasticizer, a photoplant such as calcium carbonate, a coloring wound, or a thixotropic wound 1 (which will be removed) depending on your needs.

The method of applying the primer (σ) of the present invention is to apply the primer to the first layer and the second layer (σ).
) total 1tk'''C trace 5 ~ 5009/m (dry coating amount)
Using a primer, brushing, coating, spraying, pouring, and dipping were performed using known methods. Dad, dry the primer at room temperature or 1.
It is carried out at 20°C for 0.5 to 24 hours.

In addition, when applying the primer, in order to ensure sufficient adhesion, the usual six-sided treatment of the metal, such as degreasing, sandpening, Tanimune Plast, or chemically treated bones must be carried out. It is done by law.

The present invention is applicable to dredging work that requires abrasion resistance, water-resistant adhesive strength, etc., and lining of the inner surface of steel pipes, hoppers, pumps, etc. used for transporting slurry containing earth and sand from mines, etc. This is extremely useful.

The method for producing the primer, the method for applying the primer, and the method for testing the adhesive strength used in the Examples and Comparative Examples of the present invention will be described below.0 Primer 21! l! Production method Niprimer A: Stirring v:s In a three-day flask equipped with a reflux condenser, Denka Butyral 14ooo-z (manufactured by Denki Kagaku Kogyo Co., Ltd., polyvinyl butyral resin, 10-yen car body weight approx. + 211
, vinyl butylar/L/75 heavy weight or more) 90'l.

Plyophen 5olo (Dainippon Ingi Kagaku Kojo CL)
! + Retirement, phenolic tree Jli1. resol type) 17
01° and l.luene + isopropanol (1a 2
Xh'Jkt ratio] mixture Rj 41s79o1￥11
Heated air at 60°C for about 1 hour to give a uniform Ri/l
K-gay II.

Primer I%: Using Denka Butyral $4000-1 17Of and Pryophen 501079Of, Primer A
A uniform bath solution was obtained by performing the same treatment as ・Primer C
: Denka Butyral $4ooo-1? ! /4o and Plyophen 5,010 were used in 220 f1 and treated in the same manner as Primer A to obtain a uniform @.

Primer D: Denka Butyral-+4:4000-1 22of and Plyophen 5010i40f were used, and treated as primer A and FJ to obtain uniform aged cutting. Approximately 50μ surface roughness due to JI
SB 0601) Apply the coating conditions listed in Table 1 on a surface-treated iron plate. The second layer of river primer was applied and the wind was 11 I't, L for 1 hour at 1 ri temperature.

The dry koji ayakan of each primer is Ill~202/
! It was +12. However, for trenches where only one type of primer was used, the primer was rinsed twice.

(Initial oil drain 1ljf Maintenance wiping 51 piece <25'C, 559bRI
25 ++n++ rll cut Ipi I-, tension 4
Question! io +m;+/min, 18011
Peeling 1・1. I took the exam - October Kumemu =.

(2) f:; (Water) X=t +J2+i IW fit/
l (1μ)
text, elastomer'k i nun width cut IUfL,
2Fi℃ sword (medium IC71: 1 time et it゛t L
, tensile m a 50 ff1l+! / ml IT
-C180jJ):, 1) 111'ilj trial r go ice dv 7C.

Central! 11 Mui'-IJl Apply primer A as 214-waste to my mother-in-law bL, rA
Primer B'a: u cloth as 2hJ. These fryers are 71! - Pybran Q-5 on 4 irons with koji D
83 (3-11'13 Polyoxytetramethylene glycol/'2 phenylmethane diincia un-1-based prepolymer N CO = 15 i% by weight) manufactured by Urethane Co., Ltd. and Hipre 7M C-532 (Sankata 1-') 1 Polyogynote! manufactured by Urethane Co., Ltd. Ramethylene glycol/diol type TP
0.004 i part of dizotyltin dilaure) is cooled to 100 parts by weight of i-forming agent), and the pot line is adjusted to about 1 part by weight.
0 minute VcjJ4 potted hardening agent and Kaoru, near-immersion type Boliurekun lL type (Dura (Toho Kankijin F-206 type) with a blending ratio of 10
tl: 66 (vehicle volume ratio), pl: starting point 3U S'/s
e CTuft mix and elastomer thickness 5n
Let's become un? J is also begging for help. If you mix the temporary IC, immediately insert 60C1'? The material was placed in a hardened octopus with a temperature of -1 and then cured for 3υ minutes to form an elastomer. This test body was subjected to the 1st cut with scissors and the results were as shown in the 1st cut.

Center example 2 To the oil sea; j[)゛Limer C was applied to the shoulder r La second no-VC primer 1) was applied, and the treatment was carried out in the same manner as in Example 1. The results are shown in Table 1. It provoked me.

Comparative Example 1 Since 1 Limer B was applied to the first layer and Frymer A was applied to the second layer, the roasting results obtained when treated in the same manner as in Kaishisei j1 were obtained as shown in Table 1.

Comparison example 2 Both the first and second layers are coated with fryer B.

Tue 1J The same treatment as in Example 1 resulted in the results shown in Table 1.

The results of the same 43RVc treatment as in Example 1 are as shown in Table 1. .

Ratio 51) 1'/:l 4 Katsura'--Nori 1 and 2nd layer both Primer D2 Fall 41
1 shi.

Just like her husband, Takumi-dokoro J.I! The result of L7 was shown to the first team and 1C was added to L7.

First layer toge sol type phenolic resin? By covering the head with flimer, which is the main component, and applying polyvinyl butyral and j6 primer to the second helmet, the waterproof contact layer strength k It is clearer than the first layer.

Claims (1)

[Claims]
fLIj supply 90 to 60 mMblSa polyvinyl butyral lO ~ 40 tons 41N H1! A composition consisting of S is dried. After that, a composition consisting of resol halyphenol resin 1O~40% θIt and polyvinyl butyral 90~60% was dried in a cloth, and then a modified polyurethane entomer was applied and cured. Sa-trb? ! Q) Method of lining polyurethane elastomer with rows.