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Thermoplastic elastomer material used in automobile and preparation method thereof

A thermoplastic elastomer and automotive technology, applied in the field of thermoplastic elastomer and its preparation, can solve the problems of high melt viscosity and inability to separate melt, and achieve the effect of reducing VOC indicators

Inactive Publication Date: 2019-04-16
浙江耀隆塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the molten body formed after the raw material is melted flows in the screw extruder, affected by high temperature, SBS or SEBS or other raw materials or additives in the molten body will decompose, and then produce small molecules with lower boiling points. However, due to the viscosity of the molten body Larger, the small molecule cannot be separated from the melt in time when it is in the screw extruder

Method used

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  • Thermoplastic elastomer material used in automobile and preparation method thereof
  • Thermoplastic elastomer material used in automobile and preparation method thereof
  • Thermoplastic elastomer material used in automobile and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A kind of preparation method of the thermoplastic elastomer used in automobile interior, comprises the following steps:

[0051] S1: Weigh 15-20 parts of SBS, 5-10 parts of SEBS, 33-50 parts of white oil, 10-20 parts of PP, 3-5 parts of maleic anhydride grafted PP, 1-2 parts of activated carbon powder according to the mass parts 20-40 parts of fillers, 1-2 parts of additives and other raw materials, add SBS, SEBS and white oil into the high-mixer and mix for 30 minutes, then add PP, fillers and other raw materials and mix for 40-60 minutes, wait for high-mixing After the materials in the machine are mixed evenly, the mixed raw materials are obtained;

[0052] S2: Add the mixed raw materials into the screw extruder, melt and extrude, the vacuum degree of the screw extruder is 0.05-0.01MPa, and obtain the product masterbatch.

[0053] SBS selects the commercially available products of Baling Petrochemical, grades 791 and 792. The molecular weight of SEBS is between 150,...

Embodiment 2

[0082] A kind of preparation method of the thermoplastic elastomer used in automobile interior, on the basis of embodiment 1, choose to simultaneously add 5-7 parts of DOPO flame retardant when adding filler in S2 at the same time, white oil selects naphthenic oil (Honghan Petroleum) Chemical commercially available product KN4010), obtain embodiment 2A-2F, and specific consumption parameter is as follows.

[0083]

[0084] And tested, the test results are as follows.

[0085]

[0086] At the same time, the flame retardancy test was carried out according to the flammability UL94 grade standard of Examples 2A-2F and Examples 1A-1F, and the results are as follows.

[0087]

[0088] Thus, the flame retardant properties of Examples 2A-2C added with DOPO flame retardant are improved compared with Examples 1A-1C.

Embodiment 3

[0090] A kind of preparation method of the thermoplastic elastomer used in automobile interior, based on the basis of embodiment 2, when adding filler in S2, synchronously add 1-2 parts of composite decomposition agent, composite decomposition agent is nano-silver and nano-titanium dioxide composite material, its structure It is a core-shell structure in which nano-titanium dioxide is coated on the outside of nano-silver, and it is obtained by an inverse microemulsion method. According to the above preparation method, Example 3A-3 was obtained, and the specific dosage parameters are as follows.

[0091]

[0092] Examples 3A-4F were tested for volatile content, residual styrene content and TVOC, and the headspace bottle was left standing for 5 hours under sunlight before testing. The test results are as follows.

[0093] Example

[0094] It can be seen from the above that the hair content and TVOC of Examples 3A-4F are lower than those of Examples 1A-1M.

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Abstract

The invention relates to automobile indoor rubber fittings, discloses a thermoplastic elastomer used in an automobile and a preparation method thereof, and solves the problem of poor VOC index reduction effect caused by difficult mixing of a prior liquid azeotrope agent and thermoplastic elastomer in a molten state. The method comprises, by mass, the following raw materials: 15-20 parts of SBS, 5-10 parts of SEBS, 33-50 parts of white oil, 10-20 parts of PP, 3-5 parts of maleic anhydride grafted PP, 1-2 parts of active carbon powder, 10-20 parts of a filler and 1-2 parts of an auxiliary agent.The filler is nanometer calcium carbonate or nanometer talcum powder; the auxiliary agent is one or more of erucamide, oleamide, silicone master batch, zinc stearate and calcium stearate; after the raw materials are uniformly mixed, the raw materials are extruded by a screw extruder under negative pressure to obtain the product master batch; and in the production process, organic volatile gas contained in the molten paste body is removed, so that the VOC index of the product thermoplastic elastomer is effectively reduced.

Description

technical field [0001] The invention relates to a rubber fitting in an automobile interior, in particular to a thermoplastic elastomer used in an automobile interior and a preparation method thereof. Background technique [0002] In order to implement the "Environmental Protection Law of the People's Republic of China", prevent and control pollution, and protect human health, the country has issued a national standard "Guidelines for the Evaluation of Air Quality in Passenger Cars", which is for the air quality in passenger cars, especially VOC in the air. The content has been limited, and the source of VOC in existing passenger cars is mainly produced by volatilization or aging decomposition of plastic and rubber products in the car, so it is urgent to improve the materials used in the existing car. [0003] TPE material is a rubber material modified with SBS / SEBS as the main body. In the production process of existing TPE materials, the raw materials need to be mixed and h...

Claims

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Application Information

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IPC IPC(8): C08L91/06C08L53/02C08L23/12C08L51/06C08K13/06C08K9/10C08K3/08C08K13/02C08K3/26C08K3/04C08K3/34C08K5/20B29C48/14B29C48/76
CPCC08K2003/0806C08K2003/265C08K2201/011C08L91/06C08L2205/02C08L2205/035C08L2207/04C08L53/02C08L53/025C08L23/12C08L51/06C08K13/02C08K3/26C08K3/04C08K3/34C08K5/20C08K13/06C08K9/10C08K3/08
Inventor 倪明富徐继根
Owner 浙江耀隆塑业有限公司
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