CN110092995B - Basalt fiber composite board and preparation method thereof - Google Patents

Basalt fiber composite board and preparation method thereof Download PDF

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Publication number
CN110092995B
CN110092995B CN201910467203.4A CN201910467203A CN110092995B CN 110092995 B CN110092995 B CN 110092995B CN 201910467203 A CN201910467203 A CN 201910467203A CN 110092995 B CN110092995 B CN 110092995B
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basalt fiber
temperature
composite board
zone extrusion
extrusion
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CN110092995A (en
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周灿
何兴灏
黎栋
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Liupanshui Kangbo Wood Plastic Technology Co ltd
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Liupanshui Kangbo Wood Plastic Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
    • C08J2423/28—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/10—Silicon-containing compounds

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  • Engineering & Computer Science (AREA)
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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Panels For Use In Building Construction (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

The invention provides a basalt fiber composite board and a preparation method thereof, belongs to the technical field of composite boards, and is prepared from the following raw materials in parts by weight: 50 parts of polyvinyl chloride, 65 parts of calcium powder and 10-15 parts of basalt fiber, wherein the length of the basalt fiber is 9-20 mm, 0.4-0.6 part of AC foaming agent, 4-5 parts of foaming regulator and the like. The polyvinyl chloride provided by the invention foams to form bubbles under the action of the foaming agent and the foaming regulator, so that conditions are provided for uniform doping of calcium powder, and the uniform doping of the calcium powder improves the mechanical property of the basalt fiber composite board; meanwhile, the length of the basalt fiber is adjusted to be 9-20 mm, so that the basalt fiber can connect polyvinyl chloride macroscopically, and the bending strength of the basalt fiber composite board is improved. The data of the examples show that: the bending strength of the basalt fiber composite board obtained by the invention is 10.2-11.2 MPa.

Description

Basalt fiber composite board and preparation method thereof
Technical Field
The invention relates to the technical field of composite boards, in particular to a basalt fiber composite board and a preparation method thereof.
Background
The basalt fiber is a continuous fiber which is formed by melting basalt stone at 1450-1500 ℃ and drawing the basalt stone at a high speed through a platinum-rhodium alloy wire drawing bushing. Because the basalt fiber has excellent high temperature resistance, the basalt fiber is commonly used as a fireproof additive of composite materials. Because the basalt fibers are filamentous fiber substances, the mechanical property of the composite material can be improved by adding the basalt fibers into the composite material.
In the prior art, when basalt fibers are used for preparing a composite board material, the basalt fibers are generally made into a felt-like substance as one layer in a composite board, or the basalt fibers and resin are mixed to prepare a reinforcing material and then are compounded with other layered materials to form the basalt fiber reinforcing material. For example, chinese patent application No. 201710961489.2 discloses a basalt fiber reinforced phenolic sandwich composite board and a molding process thereof, including an upper layer of basalt fiber reinforced phenolic board, a PMI foam board and a lower layer of basalt fiber reinforced phenolic board. The Chinese patent with the application number of 201110152574.7 discloses a novel basalt fiber wall insulation board and a manufacturing method thereof, wherein the basalt fiber needled felt is dipped in a high-temperature-resistant adhesive and is pressed into a compression board at high temperature and high pressure. The application number 201711494441.1 discloses a basalt fiber composite board for buildings, which comprises a building wall body, wherein the building wall body comprises at least three layers, the middle layer is a network platy structure layer made of basalt fiber/steel bar composite bars, the second layer is a heat-preservation rock wool layer, and the outmost layer is a decorative surface layer.
The Chinese patent with the application number of 201811037019.8 discloses a plastic-wood composite board, which is prepared from the raw materials of polyvinyl chloride, a stabilizer, a flame retardant, a foaming agent, wood powder, bamboo powder, an aluminate coupling agent, terpene resin, ceramic fiber, basalt fiber, diatomite and calcium carbonate powder; the application number 201811153485.2 discloses a high-strength flame-retardant wood-plastic material, which comprises the following raw materials of wood dust powder, resin, modified basalt fiber, magnesium salt whisker, nano calcium carbonate, a heat stabilizer, a lubricant, a solubilizer, nano zinc oxide, graphene, antimony trioxide and magnesium hydroxide. In the prior art, either basalt fibers and other fibers are used in a composite manner, or the basalt fibers are modified and then used, so that the basalt fibers are inconvenient to use, and the strength of the obtained wood-plastic board needs to be further improved.
Disclosure of Invention
In view of the above, the present invention aims to provide a basalt fiber composite board and a preparation method thereof, the basalt fiber composite board of the present invention directly adopts basalt fiber, and the basalt fiber composite board has excellent tensile strength through the action with other raw materials.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a basalt fiber composite board which is prepared from the following raw materials in parts by weight: 50 parts of polyvinyl chloride, 65 parts of calcium powder, 10-15 parts of basalt fiber, 0.4-0.6 part of AC foaming agent, 4-5 parts of foaming regulator, 2.5-3 parts of stabilizer, 2.5-2.8 parts of CPE plasticizer, 0.3-0.7 part of PE wax, 0.3-0.8 part of stearic acid, 0.3-0.5 part of calcium stearate and 0.3-0.6 part of zinc stearate; the length of the basalt fiber is 9-20 mm.
Preferably, the stabilizer comprises a calcium zinc stabilizer.
Preferably, the particle size of the calcium powder is 800-1200 meshes.
Preferably, the foaming regulator comprises a type 530 foaming regulator.
The invention also provides a preparation method of the basalt fiber composite board, which comprises the following steps:
sequentially carrying out high-temperature mixing and low-temperature mixing on the raw materials to obtain a mixed material;
extruding the mixed material by eight sections to obtain an extruded material;
and shaping the extruded material to obtain the basalt fiber composite board.
Preferably, the temperature of the high-temperature mixing is 115-120 ℃, and the time is 15-20 min.
Preferably, the high-temperature mixing is carried out under the condition of stirring, and the rotating speed of the stirring is 1200-1500 r/min.
Preferably, the low-temperature mixing is carried out at the temperature of 50-70 ℃ for 5-10 min.
Preferably, the eight-section extrusion comprises a first-zone extrusion, a second-zone extrusion, a third-zone extrusion, a fourth-zone extrusion, a fifth-zone extrusion, a sixth-zone extrusion, a seventh-zone extrusion and an eight-zone extrusion which are sequentially carried out; the temperature of the first zone extrusion is 140-150 ℃; the temperature of the second zone extrusion is 160-165 ℃; the temperature of the three-zone extrusion is 170-175 ℃; the temperature of the four-zone extrusion is 175-180 ℃; the extrusion temperature of the five zones is 160-165 ℃; the six-zone extrusion temperature is 160-165 ℃, and the seven-zone extrusion temperature is 160-165 ℃; the eight-zone extrusion temperature is 160-165 ℃.
Preferably, the setting temperature is 8-13 ℃.
The invention provides a basalt fiber composite board which is prepared from the following raw materials in parts by weight: 50 parts of polyvinyl chloride, 65 parts of calcium powder, 10-15 parts of basalt fiber, 0.4-0.6 part of AC foaming agent, 4-5 parts of foaming regulator, 2.5-3 parts of stabilizer, 2.5-2.8 parts of CPE plasticizer, 0.3-0.7 part of PE wax, 0.3-0.8 part of stearic acid, 0.3-0.5 part of calcium stearate and 0.3-0.6 part of zinc stearate; the length of the basalt fiber is 9-20 mm. The bubbles formed by foaming the polyvinyl chloride under the action of the foaming agent and the foaming regulator provide conditions for uniformly doping the calcium powder, and the mechanical property of the basalt fiber composite board is improved by uniformly doping the calcium powder; meanwhile, the length of the basalt fiber is adjusted to be 9-20 mm, so that the basalt fiber can connect polyvinyl chloride macroscopically; the dual functions of the calcium powder and the basalt fiber improve the bending strength of the basalt fiber composite board. The data of the examples show that: the bending strength of the basalt fiber composite board obtained by the invention is 10.2-11.2 MPa.
Detailed Description
The invention provides a basalt fiber composite board which is prepared from the following raw materials in parts by weight: 50 parts of polyvinyl chloride, 65 parts of calcium powder, 10-15 parts of basalt fiber, 0.4-0.6 part of AC foaming agent, 4-5 parts of foaming regulator, 2.5-3 parts of stabilizer, 2.5-2.8 parts of CPE plasticizer, 0.3-0.7 part of PE wax, 0.3-0.8 part of stearic acid, 0.3-0.5 part of calcium stearate and 0.3-0.6 part of zinc stearate; the length of the basalt fiber is 9-20 mm.
The raw materials for preparing the basalt fiber composite board comprise 50 parts by weight of polyvinyl chloride. The polyvinyl chloride of the invention is the matrix of the composite board, and ensures that the composite board has the basic performance of plastics.
The raw materials for preparing the basalt fiber composite board comprise 65 parts by weight of calcium powder; the particle size of the calcium powder is preferably 800-1200 meshes. The calcium powder is a reinforcing material, so that the mechanical property of the composite board can be improved; according to the invention, the particle size of the calcium powder is adjusted to 800-1200 meshes, so that the calcium powder can be doped into pores of the foamed polyvinyl chloride, and the bending strength of the final composite board is improved by increasing the internal strength of the polyvinyl chloride.
On the basis of the weight parts of the calcium powder, the raw materials for preparing the basalt fiber composite board comprise 10-15 parts of basalt fibers; preferably 11 to 14 parts, and more preferably 12 to 13 parts; the length of the basalt fiber is preferably 9-20 mm, and more preferably 12-15 mm. According to the invention, the length of the basalt fiber is adjusted to 9-20 mm, polyvinyl chloride can be connected together macroscopically, and the bending strength of the basalt fiber composite board is improved together with the internal strength enhancement of the calcium powder.
The raw materials for preparing the basalt fiber composite board comprise, by weight, 0.4-0.6 part of an AC foaming agent, and preferably 0.5 part of the calcium powder.
On the basis of the weight part of the calcium powder, the raw materials for preparing the basalt fiber composite board comprise 4-5 parts by weight of a foaming regulator, preferably 4.5 parts by weight; the foaming regulator preferably comprises a type 530 foaming regulator. The 530 type foaming regulator and the AC foaming agent jointly regulate the foaming of the polyvinyl chloride, so that the polyvinyl chloride forms uniform and fine bubbles, and the calcium powder can be uniformly doped and doped, so that the mechanical property of the composite board can be improved.
On the basis of the weight part of the calcium powder, the raw materials for preparing the basalt fiber composite board comprise 2.5-3 parts of stabilizer by weight, preferably 2.6-2.9 parts, and further preferably 2.7-2.8 parts; the stabilizer preferably comprises a calcium zinc stabilizer.
Based on the weight parts of the calcium powder, the raw materials for preparing the basalt fiber composite board comprise 2.5-2.8 parts by weight of CPE plasticizer, preferably 2.6-2.7 parts by weight. The CPE plasticizer disclosed by the invention can improve the plasticity of the basalt fiber composite board.
Based on the weight parts of the calcium powder, the raw materials for preparing the basalt fiber composite board comprise 0.3-0.7 part of PE wax, preferably 0.4-0.6 part, and more preferably 0.5 part.
Based on the weight parts of the calcium powder, the raw materials for preparing the basalt fiber composite board comprise 0.3-0.8 part of stearic acid, preferably 0.4-0.7 part of stearic acid, and further preferably 0.5-0.6 part of stearic acid.
Based on the weight parts of the calcium powder, the raw materials for preparing the basalt fiber composite board comprise 0.3-0.5 part of calcium stearate by weight parts, preferably 0.4 part.
The raw materials for preparing the basalt fiber composite board comprise, by weight, 0.3-0.6 part of zinc stearate, preferably 0.4-0.5 part of calcium powder.
The stearic acid, the zinc stearate and the calcium stearate are used as lubricants, so that the plastic matrix polyvinyl chloride, the inorganic material calcium powder and the basalt fiber can be fully mixed, and the mechanical property of the composite board can be enhanced together.
The invention also provides a preparation method of the basalt fiber composite board, which comprises the following steps:
sequentially carrying out high-temperature mixing and low-temperature mixing on the raw materials to obtain a mixed material;
extruding the mixed material by eight sections to obtain an extruded material;
and shaping the extruded material to obtain the basalt fiber composite board.
The raw materials are sequentially subjected to high-temperature mixing and low-temperature mixing to obtain a mixed material.
The order of addition of the raw materials during mixing is not particularly limited in the present invention. In the invention, the high-temperature mixing temperature is preferably 115-120 ℃; the time for high-temperature mixing is preferably 15-20 min. In the invention, the high-temperature mixing is preferably carried out under the condition of stirring, and the rotating speed of the stirring is preferably 1200-1500 r/min.
After the high-temperature mixing is finished, a cold water pipe is preferably adopted to cool the high-temperature mixed product to the low-temperature mixing temperature for low-temperature mixing.
In the invention, the low-temperature mixing temperature is preferably 50-70 ℃, more preferably 55-65 ℃, and more preferably 60 ℃; the time for low-temperature mixing is preferably 5-10 min.
The high temperature mixing of the present invention allows the raw materials to be well mixed, and the low temperature mixing allows the temperature of the raw materials to be lowered for the next process of extrusion.
After the mixed material is obtained, the mixed material is extruded in eight sections to obtain the extruded material.
In the present invention, the eight-stage extrusion preferably includes first-zone extrusion, second-zone extrusion, third-zone extrusion, fourth-zone extrusion, fifth-zone extrusion, sixth-zone extrusion, seventh-zone extrusion, and eighth-zone extrusion, which are sequentially performed. In the invention, the temperature of the first zone extrusion is preferably 14-150 ℃; the temperature of the second zone extrusion is preferably 160-165 ℃; the temperature of the three-zone extrusion is preferably 170-175 ℃; the temperature of the four-zone extrusion is preferably 175-180 ℃; the extrusion temperature of the five zones is preferably 160-165 ℃; the six-zone extrusion temperature is preferably 160-165 ℃, and the seven-zone extrusion temperature is preferably 160-165 ℃; the extrusion temperature of the eight zones is preferably 160-165 ℃.
After the extrusion material is obtained, the basalt fiber composite board is obtained by shaping the extrusion material. In the invention, the setting temperature is preferably 8-13 ℃. The shaping according to the invention is preferably carried out in a shaping mold.
The basalt fiber composite board and the method for manufacturing the same according to the present invention will be described in detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.
Example 1
50kg of polyvinyl chloride, 65kg of calcium powder (1200 meshes), 15kg of basalt fiber with the length of 12mm, 0.5kg of AC foaming agent, 4kg of 530 type foaming regulator, 3kg of calcium-zinc stabilizer, 2.5kg of CPE plasticizer, 0.5kg of PE wax, 0.3kg of stearic acid, 0.5kg of calcium stearate and 0.4kg of zinc stearate are mixed for 20min at the high temperature of 120 ℃; then cooling the high-temperature mixed material to 50 ℃ by using a cold water pipe, and mixing for 5min at a low temperature to obtain a mixed material;
sequentially carrying out first-zone extrusion (140 ℃), second-zone extrusion (160 ℃), third-zone extrusion (170 ℃), fourth-zone extrusion (175 ℃), fifth-zone extrusion (160 ℃), sixth-zone extrusion (160 ℃), seventh-zone extrusion (165 ℃) and eighth-zone extrusion (165 ℃) on the mixed material to obtain extruded materials;
and (3) setting the extruded material in a setting die at 8 ℃ to obtain the basalt fiber composite board.
Example 2
Mixing 50kg of polyvinyl chloride, 65kg of calcium powder (800 meshes), 15kg of basalt fiber with the length of 12mm, 0.5kg of AC foaming agent, 5kg of 530 type foaming regulator, 3kg of calcium-zinc stabilizer, 2.5kg of CPE plasticizer, 0.5kg of PE wax, 0.3kg of stearic acid, 0.5kg of calcium stearate and 0.4kg of zinc stearate at the high temperature of 120 ℃ for 20 min; then cooling the high-temperature mixed material to 70 ℃ by using a cold water pipe, and mixing for 10min at a low temperature to obtain a mixed material;
sequentially carrying out first-zone extrusion (140 ℃), second-zone extrusion (160 ℃), third-zone extrusion (170 ℃), fourth-zone extrusion (175 ℃), fifth-zone extrusion (160 ℃), sixth-zone extrusion (160 ℃), seventh-zone extrusion (165 ℃) and eighth-zone extrusion (165 ℃) on the mixed material to obtain extruded materials;
and (3) setting the extruded material in a setting die at 13 ℃ to obtain the basalt fiber composite board.
Example 3
Mixing 50kg of polyvinyl chloride, 65kg of calcium powder (1200 meshes), 10kg of basalt fiber with the length of 12mm, 0.5kg of AC foaming agent, 5kg of 530 type foaming regulator, 2.5kg of calcium-zinc stabilizer, 2.6kg of CPE plasticizer, 0.5kg of PE wax, 0.5kg of stearic acid, 0.5kg of calcium stearate and 0.5kg of zinc stearate at the high temperature of 115 ℃ for 20 min; then cooling the high-temperature mixed material to 60 ℃ by using a cold water pipe, and mixing for 10min at a low temperature to obtain a mixed material;
sequentially carrying out first-zone extrusion (150 ℃), second-zone extrusion (165 ℃), third-zone extrusion (170 ℃), fourth-zone extrusion (180 ℃), fifth-zone extrusion (160 ℃), sixth-zone extrusion (160 ℃), seventh-zone extrusion (165 ℃) and eighth-zone extrusion (165 ℃) on the mixed material to obtain extruded materials;
and (3) setting the extruded material in a setting die at 8 ℃ to obtain the basalt fiber composite board.
Example 4
50kg of polyvinyl chloride, 65kg of calcium powder (1200 meshes), 10kg of basalt fiber with the length of 15mm, 0.5kg of AC foaming agent, 5kg of 530 type foaming regulator, 2.5kg of calcium-zinc stabilizer, 2.6kg of CPE plasticizer, 0.5kg of PE wax, 0.5kg of stearic acid, 0.5kg of calcium stearate and 0.5kg of zinc stearate are mixed for 20min at the high temperature of 115 ℃; then cooling the high-temperature mixed material to 50 ℃ by using a cold water pipe, and mixing for 10min at a low temperature to obtain a mixed material;
sequentially carrying out first-zone extrusion (150 ℃), second-zone extrusion (165 ℃), third-zone extrusion (170 ℃), fourth-zone extrusion (180 ℃), fifth-zone extrusion (160 ℃), sixth-zone extrusion (160 ℃), seventh-zone extrusion (165 ℃) and eighth-zone extrusion (165 ℃) on the mixed material to obtain extruded materials;
and (3) setting the extruded material in a setting die at 13 ℃ to obtain the basalt fiber composite board.
Comparative example 1
The same as example 1, except that the particle size of the calcium powder was 400 mesh.
Comparative example 2
The same as in example 3, except that the length of the basalt fiber was 6 mm.
Comparative example 3
The same as in example 3, except that the length of the basalt fiber was 30 mm.
According to ISO 14704: the flexural strength of the basalt fiber composite boards obtained in the test examples 1 to 4 and the comparative examples 1 to 3 was 2000 as shown in table 1.
Bending strength test results of basalt fiber composite sheets obtained in examples 1 to 4 and comparative examples 1 to 3
Figure BSA0000183930880000071
By comparing the example 1 with the comparative example 1, it can be seen that the larger particle size of the calcium powder results in the decrease of the mechanical properties of the basalt fiber composite board, which may be because the bubbles formed by the polyvinyl chloride under the action of the foaming agent and the foaming regulator are smaller, but the larger particle size of the calcium powder results in the calcium powder not entering the bubbles formed by the polyvinyl chloride well, so that the calcium powder is unevenly distributed in the polyvinyl chloride, resulting in the decrease of the mechanical properties of the final composite board. It can be seen by comparing examples 3-4 with comparative examples 2-3 that the increase of the length of the basalt fiber can correspondingly improve the bending strength of the composite board, but when the length of the basalt fiber is increased to 30mm, the bending strength of the composite board begins to decrease, which is probably because the calcium powder is added in the polyvinyl chloride to improve the composite board, for example, the calcium powder enhances the strength of the board as a point, while the basalt fiber enhances the bending strength of the composite board by connecting the points, when the length of the basalt fiber is too long, the transition from the point to the line is lengthened, the connection property is poor, and the mechanical property of the composite board is decreased; and the basalt fiber is too short in length, the point-to-line transition is short, and the enhancement degree is limited, so that the bending strength of the composite board after the basalt fiber is added is not obviously increased. It can be seen from comparison of examples 1 and 2 that the combined action of the foaming regulator and the foaming agent can enhance the uniformity of bubbles of the polyvinyl chloride, and the particle size of the introduced calcium powder is reduced, so that the bending strength of the basalt fiber composite board obtained in example 2 is higher than that of the basalt fiber composite board obtained in example 1.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (7)

1. The basalt fiber composite board is characterized by being prepared from the following raw materials in parts by weight: 50kg of polyvinyl chloride, 65kg of calcium powder with the particle size of 800 meshes, 15kg of basalt fiber with the length of 12mm, 0.5kg of AC foaming agent, 5kg of 530 type foaming regulator, 3kg of calcium zinc stabilizer, 2.5kg of CPE plasticizer, 0.5kg of PE wax, 0.3kg of stearic acid, 0.5kg of calcium stearate and 0.4kg of zinc stearate.
2. The production method of the basalt fiber composite board according to claim 1, comprising the steps of:
sequentially carrying out high-temperature mixing and low-temperature mixing on the raw materials to obtain a mixed material;
extruding the mixed material by eight sections to obtain an extruded material;
and shaping the extruded material to obtain the basalt fiber composite board.
3. The method according to claim 2, wherein the high-temperature mixing is carried out at a temperature of 115 to 120 ℃ for 15 to 20 min.
4. The preparation method according to claim 2 or 3, wherein the high-temperature mixing is performed under stirring conditions, and the rotation speed of the stirring is 1200 to 1500 r/min.
5. The method according to claim 2, wherein the low-temperature mixing is performed at 50 to 70 ℃ for 5 to 10 min.
6. The production method according to claim 2, wherein the eight-stage extrusion comprises a first-zone extrusion, a second-zone extrusion, a third-zone extrusion, a fourth-zone extrusion, a fifth-zone extrusion, a sixth-zone extrusion, a seventh-zone extrusion, and an eight-zone extrusion, which are sequentially performed; the temperature of the first zone extrusion is 140-150 ℃; the temperature of the second zone extrusion is 160-165 ℃; the temperature of the three-zone extrusion is 170-175 ℃; the temperature of the four-zone extrusion is 175-180 ℃; the extrusion temperature of the five zones is 160-165 ℃; the six-zone extrusion temperature is 160-165 ℃, and the seven-zone extrusion temperature is 160-165 ℃; the eight-zone extrusion temperature is 160-165 ℃.
7. The preparation method according to claim 2, wherein the temperature for shaping is 8-13 ℃.
CN201910467203.4A 2019-05-31 2019-05-31 Basalt fiber composite board and preparation method thereof Expired - Fee Related CN110092995B (en)

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CN110641039A (en) * 2019-09-25 2020-01-03 安徽可尔海思塑业有限公司 Preparation method of PVC (polyvinyl chloride) plate with activated carbon adsorption function
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CN112708227B (en) * 2021-01-12 2021-09-24 中国地质大学（北京） A kind of basalt fiber reinforced PVC marble tailings composite material and preparation method
CN113788982A (en) * 2021-09-18 2021-12-14 北京嘉诚瑞鑫科技有限公司 Non-metal substitute for automobile chassis
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CN116478483A (en) * 2023-04-20 2023-07-25 宝天高科（广东）有限公司 A kind of high flame-retardant PVC foam material and preparation method thereof

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CN106883534A (en) * 2017-04-07 2017-06-23 冷纯廷 The enhanced PVC board of fibre modification and its production technology

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