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A kind of ultra-low voc polypropylene material and its preparation process

A technology of polypropylene material and preparation process, which is applied in the field of automotive interior materials, can solve problems such as complex production process, poor product stability, and low efficiency, and achieve the effects of wide sources, meeting use requirements, and reducing costs

Active Publication Date: 2018-11-13
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, low-VOC polypropylene materials for automotive interiors generally have problems such as complex production process, high cost, low efficiency and poor product stability in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Domestic polypropylene: 60-65 parts; toughening agent: 10-15 parts, talcum powder: 20-25 parts; antioxidant: 0.5-0.8 parts; light stabilizer: 0.3-0.5 parts; lubricant: 0.2-0.4 parts; 2-4 parts of anti-scratch agent, 1-3 parts of toner, add to the high-speed mixer together and mix at high speed for 5-10 minutes.

[0035] 2) Add the mixed material into the modified twin-screw extruder through the main feed for melting, and pass it into 50m 3 / h of supercritical fluid, extruded and granulated, and the low molecular substances are removed by high vacuum pump. Wherein, the barrel temperature is 190-220°C, the screw speed is 300-500r / min, and the vacuum degree is: 0.08-0.1MPa. The main performance indicators in Example 1 are shown in Table 1.

[0036] The main performance index in the table one embodiment one

[0037] performance comparison

[0038] It can be seen from the examples that the low-VOC polypropylene material produced by the supercritical fluid spe...

Embodiment 2

[0040] The invention also discloses a preparation process of an ultra-low VOC polypropylene material, comprising the following steps:

[0041] Step (1). According to the formula ratio, 61-64 parts of copolymerized polypropylene, 12-14 parts of POE, 22-24 parts of talcum powder, 0.6-0.7 parts of phosphite antioxidant, and 0.35-0.45 parts of hindered amine light stabilizer 2.5-3.5 parts of silicone scratch agent, 0.25-0.35 parts of polyethylene wax, and 1.5-2.5 parts of inorganic toner are added to the high-speed mixer and mixed at high speed for 5-10 minutes. The mesh number of talcum powder is 4000 mesh;

[0042] Step (2). Add the mixed material to the twin-screw extruder through the main feed for melting, feed supercritical carbon dioxide, extrude and granulate, and remove low-molecular substances through a high-vacuum pump; for Coperion The 75 machine is improved, and a high-pressure metering pump is introduced, which is installed in the fourth section, and supercritical ca...

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Abstract

The invention discloses an ultra-low VOC polypropylene material and a preparation process thereof. The material is composed of the following raw materials in parts by weight: 60-65 parts of polypropylene, 10-15 parts of toughening agent, 20-25 parts of talcum powder, antioxidant 0.5-0.8 parts of light stabilizer, 0.3-0.5 parts of light stabilizer, 2-4 parts of anti-scratch agent, 0.2-0.4 parts of lubricant, 1-3 parts of toner; the preparation process introduces supercritical fluid as a reaction carrier, through Its strong penetrating and dissolving ability can absorb volatile small molecules in the fluid. At the same time, the domestic raw material formula system is adopted to replace the currently widely used imported raw material formula system. On the premise of ensuring the material odor and VOC performance, the cost can be reduced and the competitiveness of the product can be improved. Exhaust through the vacuum exhaust port. It is non-toxic and harmless, has no pollution to the environment, and has great promotion potential.

Description

technical field [0001] The invention belongs to the technical field of automotive interior materials, and in particular relates to an ultra-low VOC polypropylene material and a preparation process thereof. Background technique [0002] At present, the environmental protection of automobile materials is a hot direction in the automobile manufacturing industry. Among them, traditional automotive materials have large emissions of volatile organic compounds and poor air in the car, which limits the promotion of automotive interior materials. At the same time, the volatile organic compounds will have toxic and harmful gases, which are very harmful to people's health. With the continuous improvement of people's awareness of environmental protection, low-VOC polypropylene for automobiles has attracted more and more attention and application from major OEMs. [0003] At present, there are many related research results on low-VOC polypropylene materials for automobiles. The public...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/10C08L83/04C08L23/08C08L23/06C08K13/02C08K3/34B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704C08L23/10C08L2205/025C08L2205/03C08L2205/035C08L2207/062C08L2207/066C08L83/04C08L23/0815C08L23/06C08K13/02C08K3/34Y02P20/54
Inventor 胡林张奎李荣群徐剑汪鹏程
Owner ORINKO NEW MATERIAL CO LTD
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