CN116903937B - Low-smoke high-flame-retardance butadiene-acrylonitrile rubber material as well as preparation method and application thereof - Google Patents
Low-smoke high-flame-retardance butadiene-acrylonitrile rubber material as well as preparation method and application thereof Download PDFInfo
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- CN116903937B CN116903937B CN202310856570.XA CN202310856570A CN116903937B CN 116903937 B CN116903937 B CN 116903937B CN 202310856570 A CN202310856570 A CN 202310856570A CN 116903937 B CN116903937 B CN 116903937B
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- 239000000463 material Substances 0.000 title claims abstract description 138
- 229920001971 elastomer Polymers 0.000 title claims abstract description 112
- 239000005060 rubber Substances 0.000 title claims abstract description 112
- 239000000779 smoke Substances 0.000 title claims abstract description 99
- 229920000459 Nitrile rubber Polymers 0.000 title claims abstract description 55
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 229920003023 plastic Polymers 0.000 claims abstract description 121
- 239000004033 plastic Substances 0.000 claims abstract description 121
- 239000003063 flame retardant Substances 0.000 claims abstract description 87
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 82
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 25
- YNHJECZULSZAQK-UHFFFAOYSA-N tetraphenylporphyrin Chemical compound C1=CC(C(=C2C=CC(N2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3N2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 YNHJECZULSZAQK-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000004088 foaming agent Substances 0.000 claims abstract description 13
- 239000004014 plasticizer Substances 0.000 claims abstract description 13
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 12
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 21
- -1 3-methylpropenyl Chemical group 0.000 claims description 16
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 7
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 claims description 6
- MPMSMUBQXQALQI-UHFFFAOYSA-N cobalt phthalocyanine Chemical compound [Co+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 MPMSMUBQXQALQI-UHFFFAOYSA-N 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000012778 molding material Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 5
- 229910000077 silane Inorganic materials 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 claims description 5
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 229940077388 benzenesulfonate Drugs 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 6
- 238000002485 combustion reaction Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- 229910052736 halogen Inorganic materials 0.000 description 8
- 150000002367 halogens Chemical group 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 231100000331 toxic Toxicity 0.000 description 5
- 230000002588 toxic effect Effects 0.000 description 5
- OAKJQQAXSVQMHS-UHFFFAOYSA-N hydrazine Substances NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229920005549 butyl rubber Polymers 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- 229920000620 organic polymer Polymers 0.000 description 3
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000012433 hydrogen halide Substances 0.000 description 2
- 229910000039 hydrogen halide Inorganic materials 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 150000004032 porphyrins Chemical group 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000013268 sustained release Methods 0.000 description 2
- 239000012730 sustained-release form Substances 0.000 description 2
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- NOKSMMGULAYSTD-UHFFFAOYSA-N [SiH4].N=C=O Chemical compound [SiH4].N=C=O NOKSMMGULAYSTD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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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
- C08J9/08—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 carbon dioxide
-
- 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
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
- C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
-
- 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
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/18—Binary blends of expanding agents
-
- 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
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/02—Copolymers with acrylonitrile
-
- 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
- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2409/02—Copolymers with acrylonitrile
-
- 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
- C08J2427/00—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
- C08J2427/02—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
- C08J2427/04—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
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08K3/34—Silicon-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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
-
- 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
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
- C08K5/5465—Silicon-containing compounds containing nitrogen containing at least one C=N bond
Abstract
The application relates to the field of rubber and plastic materials, in particular to a low-smoke high-flame-retardance butadiene-acrylonitrile rubber and plastic material, and a preparation method and application thereof; the low-smoke high-flame-retardance butadiene-acrylonitrile rubber material comprises the following components in percentage by weight: 30-40 parts of nitrile rubber, 30-40 parts of polyvinyl chloride, 20-30 parts of plasticizer, 15-20 parts of low smoke flame retardant, 1-3 parts of anti-aging agent, 10-12 parts of foaming agent and 1-3 parts of accelerator; the low-smoke flame retardant consists of a silane coupling agent, tetraphenylporphyrin and aluminum silicate according to the weight ratio of (3-7) to (4-10), and the low-smoke high-flame-retardant nitrile rubber plastic material has the advantages of low smoke and high flame retardance.
Description
Technical Field
The application relates to the field of rubber and plastic materials, in particular to a low-smoke high-flame-retardance butadiene-acrylonitrile rubber and plastic material, and a preparation method and application thereof.
Background
The rubber-plastic material is a material formed by mixing rubber and plastic, has excellent performances of elasticity, durability, wear resistance, water resistance, insulation and the like, and is widely applied to the fields of automobiles, buildings, electronics, medical treatment and the like. Common rubber and plastic materials include vinyl butyl rubber (EPR), silicone rubber, fluororubber, ethylene propylene rubber (EPDM), and the like. In addition to the mixed rubber-plastic materials, there are also single types of rubber materials such as nitrile rubber (NBR), butyl Rubber (BR), natural Rubber (NR) and the like.
The traditional rubber and plastic material has combustibility, generates a large amount of toxic and harmful smog during combustion, seriously affects the environment and the building safety, has great hidden trouble in fireproof flame retardant performance, and mostly adds a certain amount of flame retardant filler or flame retardant into the raw materials to improve the flame retardant performance of the rubber and plastic material.
At present, the most common flame retardant is halogen flame retardant, and residues of the halogen flame retardant after decomposing HX under the combustion condition can promote dehydration and carbonization of polymer materials to form a flame-retardant carbonized layer, so that the generation amount of low-molecular-weight cracking products is reduced, and the normal operation of the combustion reaction is hindered.
In view of the above-mentioned related art, the inventors believe that the rubber-plastic material added with the halogen flame retardant can hinder the normal progress of the combustion reaction, but because of the halogen contained therein, a large amount of toxic smoke and toxic corrosive hydrogen halide gas are generated during the combustion, which results in difficulty in escaping from the fire and also causes great harm to the environment.
Disclosure of Invention
In order to reduce harmful smog generated when the rubber and plastic material is flame-retardant, the application provides a low-smoke high-flame-retardant butadiene-acrylonitrile rubber and plastic material, and a preparation method and application thereof.
The application provides a low-smoke high-flame-retardance butadiene-acrylonitrile rubber-plastic material, and a preparation method and application thereof adopt the following technical scheme:
in a first aspect, the application provides a low smoke high flame retardant butadiene-acrylonitrile rubber-plastic material, which adopts the following technical scheme:
a low-smoke high-flame-retardance butadiene-acrylonitrile rubber-plastic material comprises the following components in parts by weight: 30-40 parts of nitrile rubber, 30-40 parts of polyvinyl chloride, 20-30 parts of plasticizer, 15-20 parts of low smoke flame retardant, 1-3 parts of anti-aging agent, 10-12 parts of foaming agent and 1-3 parts of accelerator; the low smoke flame retardant consists of a silane coupling agent, tetraphenylporphyrin and aluminum silicate according to the weight ratio of (3-7): 4-10.
By adopting the technical scheme, the traditional rubber and plastic material generally meets the flame-retardant requirement by adding the halogen flame retardant, and the halogen flame retardant has good flame retardant property, but because the halogen flame retardant contains halogen, a large amount of toxic dense smoke and toxic corrosive hydrogen halide gas can be generated during combustion, and irreversible harm can be generated to the environment and human bodies.
The low-smoke high-flame-retardance nitrile rubber-plastic material is improved by adopting the low-smoke flame retardant consisting of the silane coupling agent, tetraphenylporphyrin and aluminum silicate according to the weight ratio of (3-7): (4-10): (4-10), so that the flame retardance of the rubber-plastic material can be improved, harmful gas generated in the flame retardance process of the rubber-plastic material can be reduced, and the mechanical property of the rubber-plastic material can be improved.
When tetraphenylporphyrin is combined with aluminum silicate, silicon element in aluminum silicate can be coordinated with porphyrin ring to form a larger pi conjugated system and a framework to tighten, the larger conjugated system plays a role in limiting resonance, the stability of molecules is enhanced, the influence on thermal degradation and oxidation is reduced, the generation of combustion and the sustained release of pyrolysis products are prevented, so that the effects of interception and adsorption are achieved in the fireproof process, the heat resistance, the flame resistance and the oxidation resistance of the material are improved, the flame retardant effect is improved, and harmful smoke is not generated.
Meanwhile, after the aluminum silicate and tetraphenylporphyrin form coordination bonds, compact aluminum oxide and crystal water are left. The generated alumina can wrap rubber plastic materials, and further has a flame retardant effect. And the crystallization water can keep the stability of the rubber in a high-temperature environment. Absorb and stabilize electric charge, prevent oxidation and decomposition reaction, thereby improving the thermal stability of rubber and plastic materials and further playing a role in flame retardance. The tetraphenylporphyrin which does not form coordination can also slow down the combustion reaction on the surface of the material to form inorganic substances, thereby covering and isolating further influences of oxygen, heat and combustion substances on the material and further improving the flame retardant effect.
However, when the rubber-plastic material contains excessive alumina, the rubber-plastic material may be hardened, and the flexibility of the rubber-plastic material may be reduced. By adding the silane coupling agent, the combination property between the organic polymer and the inorganic material is improved, so that the influence of alumina on the flexibility of the rubber and plastic material is reduced.
Preferably, the low smoke flame retardant consists of a silane coupling agent, tetraphenylporphyrin and aluminum silicate in a weight ratio of 5:7:7.
By adopting the technical scheme, the low-smoke flame retardant which is composed of the silane coupling agent, the tetraphenylporphyrin and the aluminum silicate according to the weight ratio of 5:7:7 can further improve the flame retardant property of the rubber and plastic material, reduce harmful gas generated in the flame retardant process of the rubber and plastic material and further improve the flexibility of the rubber and plastic material.
Preferably, the silane coupling agent is 3-methylpropenyl triisocyanate silane.
By adopting the technical scheme, the 3-methylpropenyl triisocyanate silane is taken as an isocyanate silane coupling agent, so that the combination property between the organic polymer and the inorganic material can be improved, and the influence of alumina on the flexibility of the rubber and plastic material is reduced.
Preferably, the foaming agent adopts one or two of sodium bicarbonate and 4,4' -oxo-bis-benzenesulfonyl hydrazide.
By adopting the technical scheme, the volume of the rubber plastic material can be increased, the density of the rubber plastic material can be reduced, the flexibility and the elasticity of the rubber plastic material can be improved, and the hardness of the rubber plastic material can be reduced by adopting one or two of sodium bicarbonate and 4,4 '-oxo-bis-benzenesulfonyl hydrazine as a foaming agent, and the influence of aluminum oxide on the hardness and the flexibility of the rubber plastic material can be reduced by adopting one or two of sodium bicarbonate and 4,4' -oxo-bis-benzenesulfonyl hydrazine as the foaming agent.
Preferably, the anti-aging agent is one or a combination of two of the anti-aging agent MB and the anti-aging agent 4020.
By adopting the technical scheme, the rubber and plastic material can be protected from aging caused by fluorescence and high heat by adopting one or two of the anti-aging agent MB and the anti-aging agent 4020 as the anti-aging agent, and good anti-aging performance is provided for the prepared rubber and plastic material.
Preferably, the accelerator is one or two of dinitroso pentamethylene tetramine and zinc dibutyl dithiocarbamate.
By adopting the technical scheme, the composition of one or two of dinitroso pentamethylene tetramine and zinc dibutyl dithiocarbamate is used as the accelerator, so that the crosslinking reaction of the material can be promoted, and the processability, physical properties and aging resistance of the material are improved, thereby improving the performance and stability of the material.
Preferably, the plasticizer adopts one or two of cobalt phthalocyanine and sodium alkyl benzene sulfonate.
By adopting the technical scheme, one or two of cobalt phthalocyanine and sodium alkyl benzene sulfonate are adopted as the plasticizer of the rubber and plastic material.
In a second aspect, the application provides a preparation method of a low-smoke high-flame-retardance butadiene-acrylonitrile rubber-plastic material, which adopts the following technical scheme:
a preparation method of a low-smoke high-flame-retardance butadiene-acrylonitrile rubber-plastic material comprises the following steps:
s1, putting the nitrile rubber and the polyvinyl chloride which are weighed according to the required weight parts into an internal mixer for internal mixing for 2-5 minutes, and then adding the low-smoke flame retardant, the plasticizer and the anti-aging agent which are weighed according to the required weight parts to obtain a first rubber;
s2, pouring the first rubber into an open mill, fully thinning the first rubber twice, cooling, then throwing an automatic material placing frame to turn over the rubber for 200-300 seconds, slicing, and cooling to obtain a first rubber sheet for later use;
s3, putting the first rubber sheet into an open mill, adding a promoter and a foaming agent which are weighed according to the required weight parts after pressing and heating a wrapping roller, stirring uniformly, putting rubber materials into a automatic material turning step, starting to feed after 200-400 seconds of automatic material turning, and obtaining a second rubber sheet without cutting off the rubber sheet until the material is completely fed;
s4, placing the second adhesive tape into a multi-screw extruder, and sequentially adjusting the temperature on the multi-screw extruder to be: the method comprises the steps of (1) starting an extruder at the temperature of a head section of 30-35 ℃, an extrusion section of 30-35 ℃, a plasticizing section of 30-35 ℃ and a screw section of 25-30 ℃, adjusting the rotating speed of 25-35 revolutions per minute, and performing extrusion molding by a multi-layer grinding tool of a multi-screw extruder to obtain a molding material;
s5, feeding the molding material into a baking oven with a plurality of sections of baking channels, and foaming to obtain a rubber plastic product, wherein the temperatures of the sections of the baking channels are as follows: 120-125 ℃, 125-135 ℃, 135-145 ℃, 145-155 ℃, 155-165 ℃, 165-175 ℃;
s6, introducing the rubber and plastic product into a water tank to cool for 5-10 minutes, and then delivering the rubber and plastic product to a cutting table to cut the rubber and plastic product to obtain a rubber and plastic finished product;
and S7, uniformly baking the rubber and plastic finished product for the second time, cooling after baking, and packaging after inspection.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the low-smoke high-flame-retardance nitrile rubber-plastic material is improved by adopting the low-smoke flame retardant consisting of the silane coupling agent, tetraphenylporphyrin and aluminum silicate according to the weight ratio of (3-7): (4-10): (4-10), so that the flame retardance of the rubber-plastic material can be improved, the harmful gas generated in the flame retardance process of the rubber-plastic material can be reduced, and the mechanical property of the rubber-plastic material can be improved;
2. when tetraphenylporphyrin is combined with aluminum silicate, silicon element in aluminum silicate can be coordinated with porphyrin ring to form a larger pi conjugated system and tighten a framework, the larger conjugated system plays a role in limiting resonance, the stability of molecules is enhanced, the influence on thermal degradation and oxidation is reduced, the generation of combustion and the sustained release of pyrolysis products are prevented, so that the effects of interception and adsorption are achieved in the fireproof process, the heat resistance, the flame resistance and the oxidation resistance of the material are improved, the flame retardant effect is improved, and harmful smoke is not generated;
3. when the rubber and plastic material contains excessive alumina, the rubber and plastic material can be hardened, and the flexibility of the rubber and plastic material is reduced. By adding the silane coupling agent, the combination property between the organic polymer and the inorganic material is improved, so that the influence of alumina on the flexibility of the rubber and plastic material is reduced.
Detailed Description
The present application is described in further detail below with reference to examples.
Raw materials:
the raw materials related to the application are all commercially available, and the types of the components are shown as follows.
The nitrile rubber adopts nitrile rubber NBR24;
the polyvinyl chloride adopts polyvinyl chloride PVC-C;
the silane coupling agent adopts 3-methylpropenyl triisocyanate silane KBM-403;
tetraphenylporphyrin adopts tetraphenylporphyrin TTP;
the aluminum silicate is aluminum silicate K-60;
the CAS number of the sodium bicarbonate is 144-55-8;
4,4 '-oxo-bis-benzenesulfonyl hydrazine is adopted as 4,4' -oxo-bis-benzenesulfonyl hydrazide OTSA;
the anti-aging agent adopts an anti-aging agent MB and an anti-aging agent 4020;
dinitroso pentamethylene tetramine adopts dinitroso pentamethylene tetramine DNT;
zinc dibutyl dithiocarbamate ZMB2 is adopted;
cobalt phthalocyanine is cobalt phthalocyanine CoPc;
sodium alkylbenzenesulfonate was SDBS.
Examples:
example 1:
the low smoke high flame retardant butyronitrile rubber and plastic material provided in example 1 comprises the following raw materials:
35kg of nitrile rubber, 35kg of polyvinyl chloride, 10kg of cobalt phthalocyanine, 15kg of sodium alkylbenzenesulfonate, 16kg of low smoke flame retardant, 1kg of anti-aging agent MB, 4020 kg of anti-aging agent, 7kg of sodium bicarbonate, 8kg of 4,4' -oxo-bis-benzenesulfonyl hydrazine, 1kg of dinitroso pentamethylene tetramine and 1kg of zinc dibutyl dithiocarbamate; the low smoke flame retardant consists of 3-methylpropenyl triisocyanate silane KBM-403, tetraphenyl porphyrin and aluminum silicate according to the weight ratio of 5:7:7.
The preparation method of the low-smoke high-flame-retardance butyronitrile rubber-plastic material comprises the following steps:
s1, putting the nitrile rubber and the polyvinyl chloride which are weighed according to the required weight parts into an internal mixer for banburying for 5 minutes, and then adding the low-smoke flame retardant, the plasticizer and the anti-aging agent which are weighed according to the required weight parts to obtain a first rubber;
s2, pouring the first rubber into an open mill, fully thinning the first rubber twice, cooling, feeding an automatic material placing frame, turning over the rubber for 250 seconds, slicing, and cooling to obtain a first rubber sheet for later use;
s3, putting the first rubber sheet into an open mill, adding a promoter and a foaming agent which are weighed according to the required weight parts after pressing and heating a wrapping roller, uniformly stirring, putting rubber material into an automatic material turning step, starting to feed after 300 seconds of automatic material turning, and obtaining a second rubber sheet without cutting until the material is completely fed;
s4, placing the second adhesive tape into a multi-screw extruder, and sequentially adjusting the temperature on the multi-screw extruder to be: the method comprises the steps of (1) starting an extruder at a head section of 35 ℃, an extrusion section of 35 ℃, a plasticizing section of 35 ℃, a screw section of 30 ℃, adjusting the rotating speed of 30 revolutions per minute, and performing extrusion molding by a multi-layer grinding tool of a multi-screw extruder to obtain a molding material;
s5, feeding the molding material into a baking oven with a plurality of sections of baking channels, and foaming to obtain a rubber plastic product, wherein the temperatures of the sections of the baking channels are as follows: 125 ℃,135 ℃,145 ℃,155 ℃,165 ℃,175 ℃;
s6, introducing the rubber and plastic product into a water tank, cooling for 10 minutes, and then delivering the rubber and plastic product to a cutting table for cutting to obtain a rubber and plastic product;
and S7, uniformly baking the rubber and plastic finished product for the second time, cooling after baking, and packaging after inspection.
Examples 2-3:
examples 2-3 all are based on the method of example 1, the amount of nitrile rubber in the low smoke high flame retardant nitrile rubber material is adjusted, and the specific adjustment is shown in the following table 1, wherein the low smoke flame retardant consists of a silane coupling agent, tetraphenylporphyrin and aluminum silicate according to the weight ratio of 5:7:7.
Table 1 shows the composition adjustment of Low Smoke high flame retardant nitrile rubber and plastic materials in examples 1-3
Examples 4 to 5:
examples 4-5 all based on the method of example 1, the amount of polyvinyl chloride in the low smoke high flame retardant nitrile rubber material was adjusted, the specific adjustment is shown in table 2 below, wherein the low smoke flame retardant consists of a silane coupling agent, tetraphenylporphyrin and aluminum silicate in a weight ratio of 5:7:7.
Table 2 table of the composition adjustment of the low smoke high flame retardant nitrile rubber and plastic materials in example 1, examples 4-5
Examples 6 to 9:
examples 6-9 all are based on the method of example 1, the amount and the proportion of the plasticizer in the low smoke high flame retardant nitrile rubber material are adjusted, the specific adjustment conditions are shown in the following table 3, wherein the low smoke flame retardant consists of a silane coupling agent, tetraphenylporphyrin and aluminum silicate according to the weight ratio of 5:7:7.
Table 3 table of the composition adjustment of the low smoke high flame retardant nitrile rubber and plastic materials in example 1, examples 6-9
Examples 10 to 11:
examples 10-11 all adjust the amount of the low smoke flame retardant in the low smoke high flame retardant nitrile rubber material based on the method of example 1, the specific adjustment is shown in the following table 4, wherein the low smoke flame retardant consists of a silane coupling agent, tetraphenylporphyrin and aluminum silicate according to the weight ratio of 5:7:7.
TABLE 4 composition adjustment Table for Low smoke high flame retardant nitrile rubber Material in example 1, examples 10-11
Examples 12 to 15:
examples 12-15 all are based on the method of example 1, the amount and the proportion of the anti-aging agent in the low-smoke high-flame-retardance nitrile rubber plastic material are adjusted, and the specific adjustment conditions are shown in the following table 5, wherein the low-smoke flame retardant consists of a silane coupling agent, tetraphenylporphyrin and aluminum silicate according to the weight ratio of 5:7:7.
TABLE 5 component adjustment Table for Low smoke high flame retardant nitrile rubber Material in example 1, examples 12-15
Examples 16 to 19:
examples 16-19 all were based on the method of example 1, the amount and the ratio of foaming in the low smoke high flame retardant nitrile rubber material were adjusted, the specific adjustment is shown in table 6 below, wherein the low smoke flame retardant consisted of silane coupling agent, tetraphenylporphyrin and aluminum silicate in a weight ratio of 5:7:7.
TABLE 6 composition adjustment Table for Low Smoke high flame retardant nitrile rubber and Plastic Material in example 1, examples 16-19
Examples 20 to 23:
examples 20-23 all were based on the method of example 1, the amount and the ratio of foaming in the low smoke high flame retardant nitrile rubber material were adjusted, the specific adjustment is shown in table 7 below, wherein the low smoke flame retardant consisted of silane coupling agent, tetraphenylporphyrin and aluminum silicate in a weight ratio of 5:7:7.
TABLE 7 composition adjustment Table for Low smoke high flame retardant nitrile rubber and Plastic Material in example 1, examples 20-23
Example 24:
the difference from example 1 is that the ratio of the low smoke flame retardant reinforcing agent is different, specifically: silane coupling agent: tetraphenylporphyrin: aluminum silicate = 3:4:10
Example 25:
the difference from example 1 is that the ratio of the low smoke flame retardant reinforcing agent is different, specifically: silane coupling agent: tetraphenylporphyrin: aluminum silicate = 7:10:4
Comparative example:
comparative example 1:
on the basis of the method of example 1, no silane coupling agent was added.
Comparative example 2:
based on the procedure of example 1, tetraphenylporphyrin was not added.
Comparative example 3:
on the basis of the method of example 1, no aluminum silicate was added.
Comparative example 4:
based on the method of example 1, no low smoke flame retardant was added.
Performance test:
to further study the effect of each component and preparation parameters on the performance of the low smoke high flame retardant butadiene-acrylonitrile rubber plastic material, the application further carries out the verification of the following examples, and the test results are shown in table 8.
The oxygen index is measured according to GB/T2046[1]. 2-2009;
hardness was measured according to GB 3398.2-2008;
tensile strength was measured according to GB/T1701-2001;
elongation was measured according to GB/T1701-2001;
permanent set was determined according to GB/T7759-1996;
smoke density was measured according to GB/T8325.2-2008.
TABLE 8 Performance test results for examples 1-25 and comparative examples 1-4
Referring to Table 7, in examples 1-25, the composition ratios of the low smoke high flame retardant nitrile rubber and plastic materials were compared, and the test results show that the low smoke high flame retardant nitrile rubber and plastic materials with low smoke flame retardant added have better flame retardance and flexibility, and the amount of smoke generated during combustion is smaller. Wherein, the low smoke high flame retardant nitrile rubber plastic material in the example 1 has the best flame retardance and flexibility, and the minimum smoke amount is generated during combustion.
In comparison with example 1, examples 2-3 examined the effect of the amount of nitrile rubber added to the rubber and plastic material on the performance of the rubber and plastic material, and the test results showed that the rubber and plastic material with the nitrile rubber added in the weight fraction range had good flexibility and flame retardance and produced less smoke when burned.
In comparison with example 1, examples 4-5 examined the effect of the amount of polyvinyl chloride added to the rubber and plastic material on the performance of the rubber and plastic material, and the test results showed that the rubber and plastic material added with polyvinyl chloride in the weight fraction range had good flexibility and flame retardance, and less smoke was generated when burned.
In comparison with example 1, examples 6-9 examined the effect of the amount and ratio of plasticizer added to the rubber and plastic material on the performance of the rubber and plastic material, and the test results showed that the rubber and plastic material with plasticizer added in the weight fraction range had good flexibility and flame retardance, and less smoke was generated during combustion. Wherein the rubber and plastic material produced according to the amount and proportion of the plasticizer in example 1 has the best performance.
In comparison with example 1, examples 10-11 examined the effect of the amount of low smoke flame retardant added to the rubber and plastic material on the performance of the rubber and plastic material, and the test results showed that the rubber and plastic material with the low smoke flame retardant added thereto had good flexibility and flame retardance in the weight fraction range, and that the smoke generated during combustion was smaller and similar to the performance of the rubber and plastic material produced in example 1.
In comparison with example 1, examples 12-15 examined the effect of the amount and ratio of the anti-aging agent added to the rubber and plastic material on the performance of the rubber and plastic material, and the test results showed that the rubber and plastic material added with the anti-aging agent in the weight fraction range has good flexibility and flame retardance, and generates less smoke when burned, wherein the rubber and plastic material produced by the anti-aging agent added in example 1 has the best performance.
In comparison with example 1, examples 16-19 examined the effect of the amount and ratio of the foaming agent added to the rubber and plastic material on the performance of the rubber and plastic material, and the test results showed that the rubber and plastic material added with the foaming agent in the weight fraction range has good flexibility and flame retardance, and generates less smoke when burned, wherein the performance of the rubber and plastic material produced by the foaming agent added in example 1 is optimal.
In comparison with example 1, examples 20-23 examined the effect of the amount and ratio of the accelerator added to the rubber and plastic material on the performance of the rubber and plastic material, and the test results showed that the rubber and plastic material with the accelerator added in the weight fraction range had good flexibility and flame retardance, and less smoke was generated during combustion, wherein the performance of the rubber and plastic material produced by the accelerator added in example 1 was optimal.
In comparison with example 1, examples 24-25 examined the effect of using low smoke flame retardants of different proportions in the rubber and plastic materials on the performance of the rubber and plastic materials, and test results show that the rubber and plastic materials added with the low smoke flame retardants of different proportions have good flexibility and flame retardance, and generate less smoke during combustion, wherein the performance of the rubber and plastic materials produced by the low smoke flame retardants added in example 1 is optimal.
In comparison with comparative example 1, the low smoke, high flame retardant nitrile rubber and plastic material of comparative example 1 was found to have a lower oxygen index, a lower hardness and a lower flexibility, but less smoke generation upon combustion.
In comparison of example 1 with comparative example 2, the low smoke, high flame retardant nitrile rubber and plastic material of comparative example 2 was found to have a lower oxygen index and to be harder, but similar flexibility to that of example 1, with less smoke generation upon combustion.
In comparison of example 1 with comparative example 3, the low smoke, high flame retardant nitrile rubber and plastic material of comparative example 3 was found to have a lower oxygen index and to be harder, but similar flexibility to that of example 1, with less smoke generation upon combustion.
In comparison of example 1 with comparative example 4, the low smoke, high flame retardant nitrile rubber and plastic material of comparative example 4 was found to have a lower oxygen index, be harder, but slightly less flexible than example 1 and generate a lot of smoke upon combustion.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. A low smoke high flame retardant butadiene acrylonitrile rubber plastic material is characterized in that: comprises the following components in parts by weight: 30-40 parts of nitrile rubber, 30-40 parts of polyvinyl chloride, 20-30 parts of plasticizer, 15-20 parts of low smoke flame retardant, 1-3 parts of anti-aging agent, 10-12 parts of foaming agent and 1-3 parts of accelerator;
the low smoke flame retardant consists of a silane coupling agent, tetraphenylporphyrin and aluminum silicate according to the weight ratio of (3-7): 4-10.
2. The low smoke, high flame retardant, butyl nitrile rubber and plastic material of claim 1, wherein: the low smoke flame retardant consists of a silane coupling agent, tetraphenylporphyrin and aluminum silicate according to the weight ratio of 5:7:7.
3. The low smoke, high flame retardant, butyl nitrile rubber and plastic material of claim 2, wherein: the silane coupling agent adopts 3-methylpropenyl triisocyanate silane.
4. The low smoke, high flame retardant, butyl nitrile rubber and plastic material of claim 1, wherein: the foaming agent adopts one or two of sodium bicarbonate and 4,4' -oxo-bis-benzenesulfonyl hydrazide.
5. The low smoke, high flame retardant, butyl nitrile rubber and plastic material of claim 1, wherein: the anti-aging agent adopts one or two of an anti-aging agent MB and an anti-aging agent 4020.
6. The low smoke, high flame retardant, butyl nitrile rubber and plastic material of claim 1, wherein: the accelerator is one or two of dinitroso pentamethylene tetramine and zinc dibutyl dithiocarbamate.
7. The low smoke, high flame retardant, butyl nitrile rubber and plastic material of claim 1, wherein: the plasticizer adopts one or two of cobalt phthalocyanine and sodium alkyl benzene sulfonate.
8. A method for preparing a low smoke, high flame retardant, rubber and plastic material as defined in any one of claims 1 to 7, which is characterized in that: the method comprises the following steps:
s1, putting the nitrile rubber and the polyvinyl chloride which are weighed according to the required weight parts into an internal mixer for internal mixing for 2-5 minutes, and then adding the low-smoke flame retardant, the plasticizer and the anti-aging agent which are weighed according to the required weight parts to obtain a first rubber;
s2, pouring the first rubber into an open mill, fully thinning the first rubber twice, cooling, then throwing an automatic material placing frame to turn over the rubber for 200-300 seconds, slicing, and cooling to obtain a first rubber sheet for later use;
s3, putting the first rubber sheet into an open mill, adding a promoter and a foaming agent which are weighed according to the required weight parts after pressing and heating a wrapping roller, stirring uniformly, putting rubber materials into a automatic material turning step, starting to feed after 200-400 seconds of automatic material turning, and obtaining a second rubber sheet without cutting off the rubber sheet until the material is completely fed;
s4, placing the second adhesive tape into a multi-screw extruder, and sequentially adjusting the temperature on the multi-screw extruder to be: the method comprises the steps of (1) starting an extruder at the temperature of a head section of 30-35 ℃, an extrusion section of 30-35 ℃, a plasticizing section of 30-35 ℃ and a screw section of 25-30 ℃, adjusting the rotating speed of 25-35 revolutions per minute, and performing extrusion molding by a multi-layer grinding tool of a multi-screw extruder to obtain a molding material;
s5, feeding the molding material into a baking oven with a plurality of sections of baking channels, and foaming to obtain a rubber plastic product, wherein the temperatures of the sections of the baking channels are as follows: 120-125 ℃, 125-135 ℃, 135-145 ℃, 145-155 ℃, 155-165 ℃, 165-175 ℃;
s6, introducing the rubber and plastic product into a water tank to cool for 5-10 minutes, and then delivering the rubber and plastic product to a cutting table to cut the rubber and plastic product to obtain a rubber and plastic finished product;
and S7, uniformly baking the rubber and plastic finished product for the second time, cooling after baking, and packaging after inspection.
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| EP1095980A1 (en) * | 1999-10-28 | 2001-05-02 | Dongbang Industrial Co., Ltd. | Flame-retardant polyolefin/PVC foam composition and method for producing the same |
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