Method for reducing content of organic volatile matter in polypropylene processing process

A technology of organic volatiles and processing, applied in the field of reducing the content of organic volatiles in the processing of polypropylene

Inactive Publication Date: 2019-03-05
SAIC-GM-WULING AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is a simple physical adsorption, and the odor molecules will still be released when heated, so the method of using activated carbon for physical adsorption also has shortcomings

Method used

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  • Method for reducing content of organic volatile matter in polypropylene processing process
  • Method for reducing content of organic volatile matter in polypropylene processing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A. Take 70 parts of polypropylene, 29 parts of talcum powder, 0.4 parts of stabilizer DSTP, and 0.3 parts of antioxidants 1010 and 168.

[0032] B. Put the components described in step A into a 400-600r / min mixer and dry mix for 3-5 minutes; the temperature of the feeding section is controlled in the first zone; the mixed material is placed in a twin-screw extruder, After melting and plasticizing, extruding and granulating, the plasticizing section needs to go through five temperature ranges, and the temperatures are controlled in the second, third, fourth, fifth and sixth zones respectively. During the extrusion and granulation process, the processing The small molecules produced in the process are extracted, and the water or alcohol vapor and organic volatiles are extracted with a vacuum pump. The temperature of the vacuum section is controlled in four zones, which are the seventh zone, the eighth zone, the ninth zone and the tenth zone, thereby obtaining low odor. Ev...

Embodiment 2

[0034] A. Take 70 parts of polypropylene, 27 parts of talcum powder, 0.4 parts of stabilizer DSTP, 0.3 parts of antioxidants 1010 and 168, 2 parts of glycerin and water adsorbed by zeolite or a mixture of glycerin, water and alcohol adsorbed by zeolite.

[0035] B. Put the components described in step A into a 400-600r / min mixer and dry mix for 3-5 minutes; the temperature of the feeding section is controlled in the first zone; the mixed material is placed in a twin-screw extruder, After melting and plasticizing, extruding and granulating, the plasticizing section needs to go through five temperature ranges, and the temperatures are controlled in the second, third, fourth, fifth and sixth zones respectively. During the extrusion and granulation process, the processing The small molecules produced in the process are extracted, and the water or alcohol vapor and organic volatiles are extracted with a vacuum pump. The temperature of the vacuum section is controlled in four zones, ...

Embodiment 3

[0037] A. Take 70 parts of polypropylene, 25 parts of talcum powder, 0.4 parts of stabilizer DSTP, 0.3 parts of antioxidants 1010 and 168, 4 parts of glycerin and water adsorbed by zeolite or a mixture of glycerin, water and alcohol adsorbed by zeolite.

[0038] B. Put the components described in step A into a 400-600r / min mixer and dry mix for 3-5 minutes; the temperature of the feeding section is controlled in the first zone; the mixed material is placed in a twin-screw extruder, After melting and plasticizing, extruding and granulating, the plasticizing section needs to go through five temperature ranges, and the temperatures are controlled in the second, third, fourth, fifth and sixth zones respectively. During the extrusion and granulation process, the processing The small molecules produced in the process are extracted, and the water or alcohol vapor and organic volatiles are extracted with a vacuum pump. The temperature of the vacuum section is controlled in four zones, ...

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Abstract

The invention discloses a method for reducing the content of organic volatile matter in a polypropylene processing process. The method comprises the following steps: A, preparing a group of polypropylene basic proportions comprising 70-90 parts of polypropylene, 10-30 parts of talcum powder, 0.5-1 part of a heat stabilizer DSTP, 0.15-0.5 part of an antioxidant 1010, 0.15-0.5 part of an antioxidant168 and 2-5 parts of a zeolite-adsorbed mixture of glycerin and water or a zeolite-adsorbed mixture of glycerin, water and ethyl alcohol, wherein the ratio of the glycerol to the water is 3:7 to 4:6and the ratio of the glycerin to the water to the ethyl alcohol is 3:3:4 to 3:6:1; and B, putting the components in the step A into a mixer for carrying out dry mixing for 3-5 minutes, putting the mixed materials into a double-screw extruder, carrying out melting and granulating, dissolving small molecules of a processing process in an extruding granulation process, and pumping out water or alcohol steam and organic volatile matter by using a vacuum pump, so that a polypropylene composite material with low odor and even no odor is obtained.

Description

technical field [0001] The invention relates to a method for reducing the content of volatile matter, in particular to a method for reducing the content of organic volatile matter in the processing of polypropylene. Background technique [0002] In vehicle interior products, polypropylene is widely used, such as: instrument panel assembly, door trim assembly, pillar and side panel assembly, etc.; however, polypropylene products will release some difficult Smell, and thus more and more consumers questioned. Moreover, as people's awareness of environmental protection and health continues to increase, the challenges faced by polypropylene in this regard will become more and more serious. How to effectively reduce the odor of polypropylene products is imminent. [0003] There are three main reasons for the odor of polypropylene products: [0004] ① Odorous catalyst residue: Odorous catalysts (such as ester compounds or alkane compounds) used in the process of synthesizing pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L53/00C08K13/04C08K3/34C08K5/372C08K5/134C08K5/526C08K7/26B29B9/06
CPCB29B9/06C08K3/34C08K5/1345C08K5/372C08K5/526C08K7/26C08K13/04C08L23/12C08L53/00
Inventor 危学兵侯兆平周磊秦舒浩吴述璐
Owner SAIC-GM-WULING AUTOMOBILE CO LTD
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