CN113004611A - Preparation method of low-VOC (volatile organic compound) automotive interior material - Google Patents
Preparation method of low-VOC (volatile organic compound) automotive interior material Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000012855 volatile organic compound Substances 0.000 title abstract description 64
- -1 polypropylene Polymers 0.000 claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 29
- 239000004743 Polypropylene Substances 0.000 claims abstract description 21
- 229920001155 polypropylene Polymers 0.000 claims abstract description 21
- 239000008187 granular material Substances 0.000 claims abstract description 20
- 239000003112 inhibitor Substances 0.000 claims abstract description 16
- 229910000611 Zinc aluminium Inorganic materials 0.000 claims abstract description 14
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 14
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 14
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims abstract description 14
- 229960001545 hydrotalcite Drugs 0.000 claims abstract description 14
- 229910001701 hydrotalcite Inorganic materials 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000002270 dispersing agent Substances 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000011256 inorganic filler Substances 0.000 claims abstract description 5
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 5
- 239000012745 toughening agent Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 12
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- LTMRRSWNXVJMBA-UHFFFAOYSA-L 2,2-diethylpropanedioate Chemical compound CCC(CC)(C([O-])=O)C([O-])=O LTMRRSWNXVJMBA-UHFFFAOYSA-L 0.000 claims description 6
- 229920002943 EPDM rubber Polymers 0.000 claims description 6
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 6
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- 239000004113 Sepiolite Substances 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 4
- 229910052624 sepiolite Inorganic materials 0.000 claims description 4
- 235000019355 sepiolite Nutrition 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 claims description 3
- 229950004394 ditiocarb Drugs 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 3
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- QSRJVOOOWGXUDY-UHFFFAOYSA-N 2-[2-[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]ethoxy]ethoxy]ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCCOCCOCCOC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 QSRJVOOOWGXUDY-UHFFFAOYSA-N 0.000 claims description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 2
- 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 compound 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 2
- 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 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- ZQTYRTSKQFQYPQ-UHFFFAOYSA-N trisiloxane Chemical class [SiH3]O[SiH2]O[SiH3] ZQTYRTSKQFQYPQ-UHFFFAOYSA-N 0.000 claims 1
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 201000008827 tuberculosis Diseases 0.000 description 1
- 239000011701 zinc Substances 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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation method of a low-VOC (volatile organic compound) automotive interior material. The method comprises the steps of firstly, putting the polypropylene resin, the VOC inhibitor, the antioxidant, the inorganic filler, the dispersant and the toughening agent into a high-speed stirrer to be uniformly mixed to obtain a mixture; then putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules; and finally, drying the granules to obtain the low-VOC automotive interior material. The interior material for the vehicle prepared by the invention has low VOC (volatile organic compound) release amount, and the VOC release amount is not obviously increased under the condition of high temperature in the vehicle. The tert-butyl aluminum hydroxy benzoate and the zinc aluminum hydrotalcite are the key points that the material prepared by the invention has low VOC (volatile organic compounds) release amount, and the combination of the two materials has obvious synergistic effect.
Description
Technical Field
The invention belongs to the technical field of materials for automobile decoration, and particularly relates to a preparation method of a low-VOC (volatile organic compound) automobile interior material.
Background
The interior material for automobiles is generally made of polypropylene resin material, and polypropylene is a polymer obtained by addition polymerization of propylene. The polypropylene material has the advantages of chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties, good high-wear-resistance processing performance and the like, but the polypropylene material has poor impact resistance at low temperature, poor weather resistance, poor surface decoration and difference between the functionality in the aspects of electricity, magnetism, light, heat, combustion and the like and the actual requirement, and the polypropylene material is modified to become the field which is the most active in the current plastic processing development and has the most abundant results.
The polypropylene resin material used as an interior material of an automobile can release a plurality of alkane, olefin, aromatic hydrocarbon, formaldehyde or ketone substances (VOC), the release amount is increased when the temperature is high, the polypropylene resin material generates fog in the automobile and generates odor, the sight of a driver is influenced, and the body of passengers in the automobile is damaged. The research on low-VOC polypropylene materials is reported more, and most of the low-VOC polypropylene materials adopt chemical reaction, physical adsorption and melt devolatilization technologies to improve the emission problem of VOC in the original polypropylene materials. The products produced by various methods can play a certain role, but the small molecular substances adsorbed or removed at higher temperature can be desorbed or regenerated and cannot be completely removed.
Disclosure of Invention
The invention aims to provide a preparation method of a low-VOC (volatile organic compound) automotive interior material.
A preparation method of a low VOC (volatile organic compound) automotive interior material comprises the following steps:
(1) according to the weight parts, 80-100 parts of polypropylene resin, 10-30 parts of VOC inhibitor, 3-8 parts of antioxidant, 10-30 parts of inorganic filler, 3-6 parts of dispersant and 2-5 parts of toughening agent are put into a high-speed stirrer to be uniformly mixed to obtain a mixture;
(2) putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules;
(3) and (3) drying the particles in the step (2) to obtain the low VOC automotive interior material.
The VOC inhibitor is p-tert-butyl benzoic acid hydroxy aluminum and zinc aluminum hydrotalcite according to the mass ratio of 1: 1, mixing the mixture.
The antioxidant is one or more of antioxidant 1010, antioxidant 1076, antioxidant 264, antioxidant GA-80, antioxidant 245, and sodium diethyldithiocarbamate.
The inorganic filler is one or more of montmorillonite, sepiolite, medical stone and mica.
The dispersing agent is one or more than one of 4-acetoacetylaminophenylphosphonate, diethyl malonate, ethoxy modified trisiloxane and alkali lignin.
The toughening agent is one or more of ethylene propylene diene monomer, acrylate grafted styrene elastomer, linear low-density polyethylene, acrylate copolymer and chlorinated polyethylene.
The stirring speed of the high-speed stirrer in the step (1) is 300-800rpm, and the stirring time is 5-10 min.
The screw rotating speed of the double-screw extruder in the step (2) is 300-500rpm, the vacuum degree is 0.05-0.2MPa, and the processing temperature of the double-screw extruder is 150-250 ℃.
And (4) drying in an oven at the temperature of 70-100 ℃ for 1-3 h.
The invention has the beneficial effects that: the interior material for the vehicle prepared by the invention has low VOC (volatile organic compound) release amount, and the VOC release amount is not obviously increased under the condition of high temperature in the vehicle. The tert-butyl aluminum hydroxy benzoate and the zinc aluminum hydrotalcite are the key points that the material prepared by the invention has low VOC (volatile organic compounds) release amount, and the combination of the two materials has obvious synergistic effect.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The zinc-aluminium hydrotalcite of the following examples was prepared according to the method of patent 201510226827.9 and has the formula [ Zn0.66Al0.33(OH)2](CO3)0.16·H2O。
Example 1
A preparation method of a low VOC (volatile organic compound) automotive interior material comprises the following steps:
(1) according to the weight parts, 90 parts of polypropylene resin, 20 parts of VOC inhibitor, 10105 parts of antioxidant, 20 parts of montmorillonite, 5 parts of diethyl malonate and 3 parts of ethylene propylene diene monomer are put into a high-speed stirrer and stirred for 8min under the condition that the stirring speed is 500rpm to obtain a mixture; the VOC inhibitor is p-tert-butyl benzoic acid hydroxy aluminum and zinc aluminum hydrotalcite according to the mass ratio of 1: 1, mixing the mixture;
(2) putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules; the screw rotating speed of the double-screw extruder is 400rpm, the vacuum degree is 0.1MPa, and the processing temperature of the double-screw extruder is 200 ℃;
(3) and (3) feeding the granules obtained in the step (2) into an oven, adjusting the temperature of the oven to 80 ℃, and preserving the temperature for 2h to obtain the low-VOC automotive interior material.
Example 2
A preparation method of a low VOC (volatile organic compound) automotive interior material comprises the following steps:
(1) according to the weight parts, 80 parts of polypropylene resin, 12 parts of VOC inhibitor, 10764 parts of antioxidant, 12 parts of sepiolite, 4 parts of 4-acetoacetylaminophenylphosphonate and 2 parts of acrylate grafted styrene elastomer are put into a high-speed stirrer and stirred for 8min under the condition that the stirring speed is 320rpm to obtain a mixture; the VOC inhibitor is p-tert-butyl benzoic acid hydroxy aluminum and zinc aluminum hydrotalcite according to the mass ratio of 1: 1, mixing the mixture;
(2) putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules; the screw rotating speed of the double-screw extruder is 320rpm, the vacuum degree is 0.06MPa, and the processing temperature of the double-screw extruder is 160 ℃;
(3) and (3) feeding the granules obtained in the step (2) into an oven, adjusting the temperature of the oven to be 75 ℃, and preserving the heat for 3 hours to obtain the low-VOC automotive interior material.
Example 3
A preparation method of a low VOC (volatile organic compound) automotive interior material comprises the following steps:
(1) putting 100 parts of polypropylene resin, 30 parts of VOC (volatile organic compound) inhibitor, 2648 parts of antioxidant, 30 parts of medical stone, 6 parts of ethoxy modified trisiloxane and 5 parts of linear low-density polyethylene into a high-speed stirrer according to parts by weight, and stirring for 6min at the stirring speed of 650rpm to obtain a mixture; the VOC inhibitor is p-tert-butyl benzoic acid hydroxy aluminum and zinc aluminum hydrotalcite according to the mass ratio of 1: 1, mixing the mixture;
(2) putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules; the screw rotating speed of the double-screw extruder is 350rpm, the vacuum degree is 0.2MPa, and the processing temperature of the double-screw extruder is 220 ℃;
(3) and (3) feeding the granules obtained in the step (2) into an oven, adjusting the temperature of the oven to 90 ℃, and preserving the temperature for 1h to obtain the low-VOC automotive interior material.
Example 4
A preparation method of a low VOC (volatile organic compound) automotive interior material comprises the following steps:
(1) according to the weight parts, 85 parts of polypropylene resin, 22 parts of VOC (volatile organic compound) inhibitor, 22 parts of antioxidant GA-806, 22 parts of mica, 5 parts of alkali lignin and 5 parts of acrylate copolymer are put into a high-speed stirrer and stirred for 7min under the condition that the stirring speed is 700rpm to obtain a mixture; the VOC inhibitor is p-tert-butyl benzoic acid hydroxy aluminum and zinc aluminum hydrotalcite according to the mass ratio of 1: 1, mixing the mixture;
(2) putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules; the screw rotating speed of the double-screw extruder is 400rpm, the vacuum degree is 0.09MPa, and the processing temperature of the double-screw extruder is 180 ℃;
(3) and (3) feeding the granules obtained in the step (2) into an oven, adjusting the temperature of the oven to 88 ℃, and preserving the temperature for 2h to obtain the low-VOC automotive interior material.
Example 5
A preparation method of a low VOC (volatile organic compound) automotive interior material comprises the following steps:
(1) putting 88 parts of polypropylene resin, 14 parts of VOC (volatile organic compound) inhibitor, 4 parts of sodium diethyldithiocarbamate, 19 parts of sepiolite, 6 parts of 4-acetoacetylaminophenylphosphonate and 2 parts of acrylate grafted styrene elastomer into a high-speed stirrer according to parts by weight, and stirring for 8min under the condition that the stirring speed is 500rpm to obtain a mixture; the VOC inhibitor is p-tert-butyl benzoic acid hydroxy aluminum and zinc aluminum hydrotalcite according to the mass ratio of 1: 1, mixing the mixture;
(2) putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules; the screw rotating speed of the double-screw extruder is 500rpm, the vacuum degree is 0.15MPa, and the processing temperature of the double-screw extruder is 200 ℃;
(3) and (3) feeding the granules obtained in the step (2) into an oven, adjusting the temperature of the oven to 8 ℃, and preserving the heat for 3 hours to obtain the low-VOC automotive interior material.
Comparative example 1
A preparation method of an interior trim material of a vehicle comprises the following steps:
(1) according to the weight parts, 90 parts of polypropylene resin, 20 parts of p-tert-butyl aluminum hydroxy benzoate, 10105 parts of antioxidant, 20 parts of montmorillonite, 5 parts of diethyl malonate and 3 parts of ethylene propylene diene monomer are put into a high-speed stirrer and stirred for 8min under the condition that the stirring speed is 500rpm to obtain a mixture;
(2) putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules; the screw rotating speed of the double-screw extruder is 400rpm, the vacuum degree is 0.1MPa, and the processing temperature of the double-screw extruder is 200 ℃;
(3) and (3) feeding the granules obtained in the step (2) into an oven, adjusting the temperature of the oven to 80 ℃, and preserving the temperature for 2h to obtain the low-VOC automotive interior material.
Comparative example 2
A preparation method of an interior trim material of a vehicle comprises the following steps:
(1) according to the weight parts, 90 parts of polypropylene resin, 20 parts of zinc-aluminum hydrotalcite, 10105 parts of antioxidant, 20 parts of montmorillonite, 5 parts of diethyl malonate and 3 parts of ethylene propylene diene monomer are put into a high-speed stirrer and stirred for 8min under the condition that the stirring speed is 500rpm to obtain a mixture;
(2) putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules; the screw rotating speed of the double-screw extruder is 400rpm, the vacuum degree is 0.1MPa, and the processing temperature of the double-screw extruder is 200 ℃;
(3) and (3) feeding the granules obtained in the step (2) into an oven, adjusting the temperature of the oven to 80 ℃, and preserving the temperature for 2h to obtain the low-VOC automotive interior material.
Comparative example 3
A preparation method of an interior trim material of a vehicle comprises the following steps:
(1) according to the weight parts, 90 parts of polypropylene resin, 10105 parts of antioxidant, 20 parts of montmorillonite, 5 parts of diethyl malonate and 3 parts of ethylene propylene diene monomer are put into a high-speed stirrer and stirred for 8min under the condition that the stirring speed is 500rpm to obtain a mixture;
(2) putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules; the screw rotating speed of the double-screw extruder is 400rpm, the vacuum degree is 0.1MPa, and the processing temperature of the double-screw extruder is 200 ℃;
(3) and (3) feeding the granules obtained in the step (2) into an oven, adjusting the temperature of the oven to 80 ℃, and preserving the temperature for 2h to obtain the low-VOC automotive interior material.
The TVOC (total volatile organic compound) of the interior materials of examples 1-5 and comparative examples 1-3 was tested according to German Federation for automotive industry standard VDA277, and the results are shown in Table 1. As can be seen from table 1, the TVOC values of examples 2 to 5 are not significantly different from those of example 1, the TVOC values of comparative example 1 and comparative example 2 are significantly higher than those of example 1, and the TVOC values of comparative example 3 are significantly higher than those of example 1, which demonstrates that the addition of the VOC inhibitor can significantly reduce the generation and release of TVOC, and has significant synergistic effect on the combined use of aluminum hydroxy-tert-butylbenzoate and zinc aluminum hydrotalcite. The principle of the tert-butyl aluminum hydroxy benzoate for reducing TVOC is as follows: the tert-butyl aluminum hydroxy benzoate serves as a tuberculosis agent in the system, so that the interior trim material of the vehicle forms a compact structure, and the generated TVOC is not easy to release. The principle that the zinc-aluminum hydrotalcite reduces TVOC is as follows: the zinc-aluminum hydrotalcite is used as an acid absorbent, and reduces the generation of volatile organic micromolecular substances by the participation of acid substances in a system in a chemical reaction in the material preparation process.
TABLE 1
Note: represents p <0.05 compared to the group of example 1; represents p < 0.05.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The preparation method of the low-VOC automotive interior material is characterized by comprising the following steps of:
(1) according to the weight parts, 80-100 parts of polypropylene resin, 10-30 parts of VOC inhibitor, 3-8 parts of antioxidant, 10-30 parts of inorganic filler, 3-6 parts of dispersant and 2-5 parts of toughening agent are put into a high-speed stirrer to be uniformly mixed to obtain a mixture;
(2) putting the mixture into a double-screw extruder for melting, extruding and granulating to obtain granules;
(3) and (3) drying the particles in the step (2) to obtain the low VOC automotive interior material.
2. The method for preparing the low-VOC automotive interior material according to claim 1, wherein the VOC inhibitor is p-tert-butyl aluminum hydroxy benzoate and zinc aluminum hydrotalcite according to a mass ratio of 1: 1, mixing the mixture.
3. The method for preparing the low-VOC automotive interior material according to claim 1, wherein the antioxidant is one or more of antioxidant 1010, antioxidant 1076, antioxidant 264, antioxidant GA-80, antioxidant 245 and sodium diethyldithiocarbamate.
4. The method for producing a low-VOC interior material for vehicles according to claim 1, wherein the inorganic filler is one or more of montmorillonite, sepiolite, medical stone, and mica.
5. The method for preparing the low-VOC interior trim material of claim 1, wherein the dispersant is one or more of 4-acetoacetylaminophenylphosphonate, diethyl malonate, ethoxy-modified trisiloxane, and alkali lignin.
6. The method for preparing the low VOC interior trim material of claim 1, wherein the toughening agent is one or more of ethylene propylene diene monomer, acrylate grafted styrene elastomer, linear low density polyethylene, acrylate copolymer and chlorinated polyethylene.
7. The method as claimed in claim 1, wherein the stirring speed of the high speed stirrer in step (1) is 300-800rpm, and the stirring time is 5-10 min.
8. The method for preparing a low VOC interior trim material as claimed in claim 1, wherein the screw rotation speed of the twin-screw extruder in step (2) is 300-500rpm, the vacuum degree is 0.05-0.2MPa, and the processing temperature of the twin-screw extruder is 150-250 ℃.
9. The method for preparing the low-VOC automotive interior material according to claim 1, wherein the drying in the step (3) is carried out in an oven, the temperature of the oven is 70-100 ℃, and the temperature is kept for 1-3 h.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754142A (en) * | 2016-02-29 | 2016-07-13 | 广州呈和科技有限公司 | Hydrotalcite-containing stiffening nucleating agent composition |
| CN107082962A (en) * | 2017-05-17 | 2017-08-22 | 昕亮科技（深圳）有限公司 | Automotive trim is with low VOC PP composite materials |
| CN109111643A (en) * | 2018-06-15 | 2019-01-01 | 中国石油化工股份有限公司 | A kind of high flowing High-impact Polypropylene and preparation method thereof |
| CN113603964A (en) * | 2021-07-30 | 2021-11-05 | 赣州能之光新材料有限公司 | Low-VOC glass fiber reinforced polypropylene composite material for automotive interior and preparation method thereof |
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2021
- 2021-02-26 CN CN202110215674.3A patent/CN113004611A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105754142A (en) * | 2016-02-29 | 2016-07-13 | 广州呈和科技有限公司 | Hydrotalcite-containing stiffening nucleating agent composition |
| CN107082962A (en) * | 2017-05-17 | 2017-08-22 | 昕亮科技（深圳）有限公司 | Automotive trim is with low VOC PP composite materials |
| CN109111643A (en) * | 2018-06-15 | 2019-01-01 | 中国石油化工股份有限公司 | A kind of high flowing High-impact Polypropylene and preparation method thereof |
| CN113603964A (en) * | 2021-07-30 | 2021-11-05 | 赣州能之光新材料有限公司 | Low-VOC glass fiber reinforced polypropylene composite material for automotive interior and preparation method thereof |
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