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Thermoplastic elastomer and preparation method thereof

A thermoplastic elastomer and raw material technology, applied in the field of thermoplastic elastomer and its preparation, can solve the problems of thermoplastic elastomer VOC index reduction, liquid entrainer is difficult to mix, high viscosity, etc., to achieve a significant reduction in VOC index and increase the degree of firmness or consistency, efficiency-enhancing effect

Active Publication Date: 2018-12-14
山东朗净新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Its disadvantage is that the elastomer material in the molten state is in the form of paste, its viscosity is high, and the liquid entrainer is not easy to mix with it, and it can only remove the organic volatiles actively released by the elastomer material in the molten state and the organic volatiles released in the molten state. The surface layer of the elastomer material contains organic volatiles, and the effect of reducing the VOC index of the obtained thermoplastic elastomer is not good.

Method used

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  • Thermoplastic elastomer and preparation method thereof
  • Thermoplastic elastomer and preparation method thereof
  • Thermoplastic elastomer and preparation method thereof

Examples

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preparation example Construction

[0041] A kind of preparation method of thermoplastic elastomer, is characterized in that, comprises the following steps:

[0042] S1: Preparation of stripping agent;

[0043] S2: Weigh 100-120 parts of SEBS, 80-100 parts of white oil, 50-60 parts of PP, 20-32 parts of filler, 26-35 parts of stripping agent according to their mass parts, and add SEBS and white oil to high Mix in the mixer for 30 minutes, then add PP and filler and mix for 20 minutes, then add stripping agent and mix for 5-6 minutes, and obtain the mixed raw material after the materials in the high mixer are mixed evenly;

[0044] S3: Put the mixed raw materials into the screw extruder, the vacuum degree in the screw extruder is 0.004MPa, add and melt and extrude to obtain the thermoplastic elastomer as the product.

[0045] The preparation method of stripping agent:

[0046] With ethanol and calcium acetate as the main raw materials,

[0047] Carry out vacuum heating and drying of calcium acetate, then weigh...

Embodiment 1

[0053] According to the above-mentioned preparation method, the preparation of thermoplastic elastomer is carried out, and embodiment 1A-1F is obtained, wherein embodiment 1A-1C selects the stripping agent with ethanol and calcium acetate as main raw materials for use, and embodiment 1D-1F selects ethanol and stearin for use Sodium acid is the stripping agent of the main raw material, and the specific raw material dosage parameters are as follows.

[0054]

[0055] Simultaneously according to the proportioning of SEBS, white oil, PP and filler of embodiment 1A-1F, adopt the Chinese patent of authorized announcement number CN104530628B a kind of TPE material and preparation method that can be used for automobile interior decoration, disclose to carry vacuum zone by liquid entrainer The method in which the organic volatiles released by the elastomer material in the molten state in the first third zone are discharged together to reduce the volatilized VOC index of the extruded ...

Embodiment 2

[0071]

[0072] And tested, the test results are as follows.

[0073]

[0074] It can be seen from the above that the TVOC and volatile content of Examples 2A-2C added with DOPO are lower than those of Examples 1A-1C.

[0075] Example 1A

[0076] Thus, the flame retardancy of Examples 2A-2C added with DOPO is improved compared with that of Examples 1A-1C.

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Abstract

The invention relates to automobile interior rubber fittings, and discloses a thermoplastic elastomer and a preparation method thereof. The problem that the effect of reducing the volatile organic compounds (VOC) index is poor due to the fact that a liquid entrainer used in the prior art cannot be easily mixed with a paste in a molten state is solved. The technical scheme is that the thermoplasticelastomer comprises the following raw materials in parts by mass: 100-120 parts of styrene ethylene butylene styrene (SEBS), 80-100 parts of white oil, 50-60 parts of polypropylene (PP), 20-32 partsof filler, 30-42 parts of a stripping agent, wherein the stripping agent is composed of 17-26 parts by mass of ethanol, 8 parts by mass of water and the balance of a coagulator. Organic volatile gas contained in a molten paste is removed in a production process, and the VOC index of the product thermoplastic elastomer is effectively reduced.

Description

technical field [0001] The invention relates to an automobile interior rubber fitting, in particular to a thermoplastic elastomer and a preparation method thereof. Background technique [0002] The existing authorized notification number is CN104530628B, a Chinese patent for a TPE material that can be used for automotive interiors and a preparation method. The material includes 100-200 parts by weight of SEBS, 100-200 parts by weight of white oil, 20-80 parts by weight of Polypropylene, 30-100 parts by weight of filler, and 0.2-0.4 parts by weight of stabilizer. The method is: under the condition of 50-80 ℃, firstly mix SEBS and white oil in the mixer for 20-30 minutes at a slow speed, then mix with other raw materials and additives for 20-30 minutes, and then add the twin-screw In the extruder; at the same time, use a melt metering pump to add the liquid entrainer in the third zone before the vacuum zone; then perform vacuum exhaust to completely drain the liquid entrainer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L23/12C08L91/06C08L5/08C08K5/098C08K3/36
CPCC08K2201/011C08L53/025C08L2205/035C08L23/12C08L91/06C08L5/08C08K5/098C08K3/36
Inventor 朱祝华劳含章
Owner 山东朗净新材料科技有限公司
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