CN114426748A - Preparation process of deformation-resistant PVC (polyvinyl chloride) elastomer material for automotive interior - Google Patents
Preparation process of deformation-resistant PVC (polyvinyl chloride) elastomer material for automotive interior Download PDFInfo
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- CN114426748A CN114426748A CN202011178603.2A CN202011178603A CN114426748A CN 114426748 A CN114426748 A CN 114426748A CN 202011178603 A CN202011178603 A CN 202011178603A CN 114426748 A CN114426748 A CN 114426748A
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- 239000000463 material Substances 0.000 title claims abstract description 57
- 229920001971 elastomer Polymers 0.000 title claims abstract description 32
- 239000000806 elastomer Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000004800 polyvinyl chloride Substances 0.000 title description 31
- 229920000915 polyvinyl chloride Polymers 0.000 title description 31
- 239000003463 adsorbent Substances 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 16
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 13
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 11
- 239000000314 lubricant Substances 0.000 claims abstract description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 7
- 239000002808 molecular sieve Substances 0.000 claims abstract description 5
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 5
- DECPGQLXYYCNEZ-UHFFFAOYSA-N tris(6-methylheptyl) phosphite Chemical compound CC(C)CCCCCOP(OCCCCCC(C)C)OCCCCCC(C)C DECPGQLXYYCNEZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 4
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims abstract description 4
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 4
- 238000004898 kneading Methods 0.000 claims abstract description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 4
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims abstract description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- MORHMXPGPOPWQT-UHFFFAOYSA-N 2-hydroxyethyl octacosanoate Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCC(=O)OCCO MORHMXPGPOPWQT-UHFFFAOYSA-N 0.000 claims description 4
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 6
- 239000012855 volatile organic compound Substances 0.000 abstract description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 1
- 235000013872 montan acid ester Nutrition 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 5
- 239000002649 leather substitute Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 229910052912 lithium silicate Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions 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; Compositions of derivatives of such polymers
- C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a preparation process of a deformation-resistant PVC elastomer material for automotive interiors, which comprises the following steps: adding PVC resin with the polymerization degree of 1300, triisooctyl phosphite, an activated carbon molecular sieve and a silicate adsorbent into a high-speed mixer, stirring, simultaneously adding dioctyl sebacate and a calcium-zinc heat stabilizer, and then mixing at a high speed; then continuing to add ABS resin, antimony trioxide, zinc borate, filler, antioxidant, lubricant, acrylic acid modified polytetrafluoroethylene and glycol montanic acid ester, kneading at high speed, adding powdered nitrile rubber, stirring until the mixed materials are fully stirred uniformly and pre-plasticized, and discharging. And discharging the mixed materials into an internal mixer for pressure internal mixing, and discharging the materials after the temperature of the materials is raised to 160-180 ℃. On the premise of improving the mechanical property of the PVC elastomer material obtained by the preparation process, the total volatile organic compound of the PVC elastomer material is less than 50 mu gC/g, and the odor test is less than or equal to 3.5.
Description
Technical Field
The invention relates to the field of PVC elastomer materials, in particular to a preparation process of a PVC elastomer material.
Background
Compared with the high popularization of automobiles in developed countries, domestic automobiles as ever noble luxuries are now advanced into families of ordinary consumers for a long time, and with the continuous expansion of the market scale of the automobile industry, the demand of automobile interior materials is also high of water rising ships, so that the domestic market prospect of the automobile interior PVC skin materials is far greater than that of the international market.
According to the analysis report of the production and sale demand and investment opportunity in the artificial leather synthetic leather industry in China in 2015-2020 issued by the prospective industry research institute, the market scale and the demand of the PVC artificial leather in the automotive interior field are steadily increased in 2009-2015, the demand of the PVC artificial leather in the automotive interior field is about 1 hundred million square meters every year, and the PVC artificial leather in the automotive interior field is steadily increased at the speed of 4.6% every year.
The PVC/ABS thermoplastic alloy material is mainly applied to various interior parts of a car body in the automobile industry, including load-bearing accessories such as seats, car doors, ceilings, seats, instrument panels and the like. With the rapid development of the automobile industry, people stay in the automobile for a longer time, the poor air quality in the automobile seriously threatens the health of people, and the quality of the air quality in the automobile is a focus of social attention at present. It has been reported that since the eight and ninety years of the last century, many countries in europe have noted the problem of pollution in the vehicle, and researchers have found that the air pollution in the vehicle is sometimes 10 times higher than that outside the vehicle. Automotive upholstery, such as instrument panels, seats, glove boxes, doors, etc., is most often made of hard plastic and leather. In the case of plastic parts, since immediately after production, no taste emission, in particular chemically unstable materials, is generally avoided. At present, PVC skin materials available by domestic manufacturers mainly aim at automobiles with low requirements in the equipment fields of buses, trucks and engineering vehicles, and cannot meet the requirements of the middle-high end fields of household automobiles due to the reasons of mechanical properties, odor, emission and the like, and no product manufacturers meeting the environmental protection requirements are provided in China.
Disclosure of Invention
The invention aims to provide a preparation process of a deformation-resistant PVC elastomer material for automotive interiors, which enables the total volatile organic compounds of the PVC elastomer material to be less than 50 mu gC/g and the odor test to be less than or equal to 3.5 on the premise of improving the mechanical property of the deformation-resistant PVC elastomer material for automotive interiors obtained by the preparation process.
In order to achieve the purpose, the invention adopts the technical scheme that: a preparation process of a deformation-resistant PVC elastomer material for automotive interiors comprises the following steps:
step one, adding 100 parts of PVC resin with the polymerization degree of 1300, 30-50 parts of triisooctyl phosphite, 0.2-1 part of activated carbon molecular sieve and 0.5-1 part of silicate adsorbent into a high-speed mixer, stirring for 1-2 minutes, mixing, simultaneously adding 5-20 parts of dioctyl sebacate and 10-15 parts of calcium-zinc heat stabilizer, and then mixing at high speed for 2-4 minutes;
secondly, continuously adding 50-70 parts of ABS resin, 5-10 parts of antimony trioxide, 8-12 parts of zinc borate, 15-20 parts of filler, 0.2-0.4 part of antioxidant, 0.4-0.6 part of lubricant, 3-10 parts of acrylic acid modified polytetrafluoroethylene and 2-4 parts of glycol montanate, kneading at high speed for 2-5 minutes, adding 20-40 parts of powdered nitrile butadiene rubber, stirring at high speed for 1-2 min when the temperature reaches 110-130 ℃, and discharging after the mixed materials are fully stirred uniformly and pre-plasticized;
step three, discharging the mixed materials into an internal mixer for pressurization and internal mixing, and discharging the materials after the temperature of the materials is raised to 160-180 ℃;
step four, during extrusion, the temperature of a screw in the double screw is 150-170 ℃, and the rotating speed of the screw is 20-30 Hz;
step five, during open mixing, the roller temperature is 175-185 ℃;
granulating by using a single-screw granulator, wherein the set temperature of the single-screw granulator is 120-140 ℃;
and step seven, cooling and sieving to obtain the PVC elastomer material.
The technical scheme of further improvement in the technical scheme is as follows:
1. in the above scheme, the silicate adsorbent is one or a mixture of two of an aluminosilicate adsorbent and a lithium-based silicate adsorbent.
2. In the above scheme, the lubricant is at least one of stearic acid, polyethylene wax and polypropylene wax.
3. In the scheme, the antioxidant is antioxidant 1010, antioxidant 1076, antioxidant 168 or antioxidant 300.
4. In the scheme, the filler is one or a mixture of calcium carbonate, porous quartz powder and mica.
5. In the scheme, the ABS resin is at least one of the products PA-747F, PA-747R, PA-767R.
6. In the scheme, in the second step, the powdered nitrile rubber is added when the temperature reaches 120 ℃.
7. In the scheme, the materials mixed in the step three are discharged into an internal mixer for pressurization and internal mixing, and the materials are discharged after the temperature of the materials is raised to 170 ℃.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the preparation process of the deformation-resistant PVC elastomer material for the automotive interior is characterized in that 30-50 parts of triisooctyl phosphite and 0.5-1 part of ethylene glycol montanate are further added on the basis of 50-100 parts of PVC resin with the polymerization degree of 1300, 50-70 parts of ABS resin, 20-40 parts of nitrile rubber, 0.2-1 part of activated carbon molecular sieve and 0.5-1 part of silicate adsorbent, so that the total volatile organic compounds of the PVC elastomer material are less than 50 mu gC/g and the odor test is less than or equal to 3.5 on the premise of improving the mechanical property.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientation or positional relationships for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention is further described below with reference to the following examples:
examples 1 to 4: a preparation process of a deformation-resistant PVC elastomer material for automotive interiors comprises the following steps:
step one, adding 100 parts of PVC resin with the polymerization degree of 1300, 30-50 parts of triisooctyl phosphite, 0.2-1 part of activated carbon molecular sieve and 0.5-1 part of silicate adsorbent into a high-speed mixer, stirring for 1-2 minutes, mixing, simultaneously adding 5-20 parts of dioctyl sebacate and 10-15 parts of calcium-zinc heat stabilizer, and then mixing at high speed for 2-4 minutes;
secondly, continuously adding 50-70 parts of ABS resin, 5-10 parts of antimony trioxide, 8-12 parts of zinc borate, 15-20 parts of filler, 0.2-0.4 part of antioxidant, 0.4-0.6 part of lubricant, 3-10 parts of acrylic acid modified polytetrafluoroethylene and 2-4 parts of glycol montanate, kneading at high speed for 2-5 minutes, adding 20-40 parts of powdered nitrile butadiene rubber, stirring at high speed for 1-2 min when the temperature reaches 110-130 ℃, and discharging after the mixed materials are fully stirred uniformly and pre-plasticized;
step three, discharging the mixed materials into an internal mixer for pressurization and internal mixing, and discharging the materials after the temperature of the materials is raised to 160-180 ℃;
step four, during extrusion, the temperature of a screw in the double screw is 150-170 ℃, and the rotating speed of the screw is 20-30 Hz;
step five, during open mixing, the roller temperature is 175-185 ℃;
granulating by using a single-screw granulator, wherein the set temperature of the single-screw granulator is 120-140 ℃;
step seven, cooling and sieving to obtain a PVC elastomer material;
the preparation process of the deformation-resistant PVC elastomer material for the automotive interior comprises the following components in parts by weight as shown in Table 1:
TABLE 1
The silicate adsorbent in the embodiment 1 is aluminosilicate adsorbent, the lubricant is stearic acid, the antioxidant is antioxidant 1076, the filler is porous powder quartz, and the ABS resin is Qimei product PA-747F;
the silicate adsorbent of the embodiment 2 is lithium-based silicate adsorbent, the lubricant is polyethylene wax, the antioxidant is antioxidant 1010, the filler is calcium carbonate, and the ABS resin is Qimei product PA-767R;
the silicate adsorbent of example 3 is aluminosilicate adsorbent, the lubricant is polypropylene wax, the antioxidant is antioxidant 168, the filler is mica, and the ABS resin is Qimei product PA-747R;
the silicate adsorbent of example 4 is one or a mixture of two of aluminosilicate adsorbent and lithium silicate adsorbent, the lubricant is polyethylene wax, the antioxidant is antioxidant 168, the filler is porous powder quartz, and the ABS resin is Qimei PA-747F.
Comparative examples 1 to 2: the preparation process of the PVC elastomer material comprises the following steps of the same steps as the embodiment, wherein the components and parts in the process are shown in the following table 2:
TABLE 2
The silicate adsorbent of comparative examples 1-2 is aluminosilicate adsorbent, the lubricant is stearic acid, the antioxidant is antioxidant 1076, the filler is porous powder quartz, and the ABS resin is Qimei product PA-747F.
The performance of the deformation-resistant PVC elastomer material for automobile interiors obtained by the preparation processes of the above examples 1-4 and the performance of the PVC elastomer material prepared by the processes of the comparative examples 1-2 are detected, and the performance is shown in Table 3:
TABLE 3
As shown in the evaluation results in Table 3, the total volatile organic compounds of the PVC elastomer materials of comparative example 1 and comparative example 2 are more than 70 μ gC/g, the odor test is more than 4, and the thermal deformation is more than 30, the thermal deformation of the deformation-resistant PVC elastomer material for automotive interiors of the examples of the invention is less than 31, the total volatile organic compounds are less than 50 μ gC/g, and the odor test is less than or equal to 3.5, which indicates that the total volatile organic compounds of the PVC elastomer materials are less than 50 μ gC/g and the odor test is less than or equal to 3.5 on the premise of improving the mechanical properties in the examples of the invention.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. A preparation process of a deformation-resistant PVC elastomer material for automotive interiors is characterized by comprising the following steps: the method comprises the following steps:
step one, adding 100 parts of PVC resin with the polymerization degree of 1300, 30-50 parts of triisooctyl phosphite, 0.2-1 part of activated carbon molecular sieve and 0.5-1 part of silicate adsorbent into a high-speed mixer, stirring for 1-2 minutes, mixing, simultaneously adding 5-20 parts of dioctyl sebacate and 10-15 parts of calcium-zinc heat stabilizer, and then mixing at high speed for 2-4 minutes;
secondly, continuously adding 50-70 parts of ABS resin, 5-10 parts of antimony trioxide, 8-12 parts of zinc borate, 15-20 parts of filler, 0.2-0.4 part of antioxidant, 0.4-0.6 part of lubricant, 3-10 parts of acrylic acid modified polytetrafluoroethylene and 2-4 parts of glycol montanate, kneading at high speed for 2-5 minutes, adding 20-40 parts of powdered nitrile butadiene rubber, stirring at high speed for 1-2 min when the temperature reaches 110-130 ℃, and discharging after the mixed materials are fully stirred uniformly and pre-plasticized;
step three, discharging the mixed materials into an internal mixer for pressurization and internal mixing, and discharging the materials after the temperature of the materials is raised to 160-180 ℃;
step four, during extrusion, the temperature of a screw in the double screw is 150-170 ℃, and the rotating speed of the screw is 20-30 Hz;
step five, during open mixing, the roller temperature is 175-185 ℃;
granulating by using a single-screw granulator, wherein the set temperature of the single-screw granulator is 120-140 ℃;
and step seven, cooling and sieving to obtain the PVC elastomer material.
2. The preparation process of the deformation-resistant PVC elastomer material for the automotive interior according to claim 1, characterized in that: the silicate adsorbent is one or a mixture of two of aluminosilicate adsorbent and lithium-based silicate adsorbent.
3. The preparation process of the deformation-resistant PVC elastomer material for the automotive interior according to claim 1, characterized in that: the lubricant is at least one of stearic acid, polyethylene wax and polypropylene wax.
4. The preparation process of the deformation-resistant PVC elastomer material for the automotive interior according to claim 1, characterized in that: the antioxidant is antioxidant 1010, antioxidant 1076, antioxidant 168 or antioxidant 300.
5. The preparation process of the deformation-resistant PVC elastomer material for the automotive interior according to claim 1, characterized in that: the filler is one or a mixture of calcium carbonate, porous quartz powder and mica.
6. The preparation process of the deformation-resistant PVC elastomer material for the automotive interior according to claim 1, characterized in that: the ABS resin is at least one of Qimei products PA-747F, PA-747R, PA-767R.
7. The preparation process of the deformation-resistant PVC elastomer material for the automotive interior according to claim 1, characterized in that: and secondly, adding the powdered nitrile rubber when the temperature reaches 120 ℃.
8. The preparation process of the deformation-resistant PVC elastomer material for the automotive interior according to claim 1, characterized in that: and C, discharging the mixed materials in the step three into an internal mixer for pressurization and internal mixing, and discharging after the temperature of the materials is raised to 170 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011178603.2A CN114426748A (en) | 2020-10-29 | 2020-10-29 | Preparation process of deformation-resistant PVC (polyvinyl chloride) elastomer material for automotive interior |
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| CN202011178603.2A CN114426748A (en) | 2020-10-29 | 2020-10-29 | Preparation process of deformation-resistant PVC (polyvinyl chloride) elastomer material for automotive interior |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129553A (en) * | 1976-05-28 | 1978-12-12 | Hoechst Aktiengesellschaft | Organic phosphites and their use as stabilizers |
| EP0331095A1 (en) * | 1988-03-01 | 1989-09-06 | Witco Corporation | Improving stability at moderate temperatures of motor vehicle components shaped from polyvinyl chloride resin compositions |
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