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Method for preparing supercritical low-odor and low-emission polypropylene material

A polypropylene material, supercritical technology, applied in separation methods, chemical instruments and methods, gaseous solvent extraction, etc., can solve problems such as difficult to long-term solutions to odor problems, and achieve the effect of eliminating physical damage and eliminating pungent odors

Active Publication Date: 2017-08-25
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although these methods have improved the odor problem of polypropylene materials to a certain extent, it is difficult to solve the odor problem for a long time

Method used

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  • Method for preparing supercritical low-odor and low-emission polypropylene material
  • Method for preparing supercritical low-odor and low-emission polypropylene material
  • Method for preparing supercritical low-odor and low-emission polypropylene material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a supercritical low-odor, low-emission polypropylene material. The polypropylene material is mixed and added to a twin-screw extruder equipped with a vacuum. The middle part of the twin-screw extruder is introduced into supercritical carbon dioxide to make Supercritical carbon dioxide and polypropylene materials are mixed, melted and extruded in a closed, high-pressure screw barrel to produce supercritical low-odor and low-emission polypropylene materials.

[0029] like figure 1As shown, the twin-screw extruder 1 includes twin-screws 1.11 arranged side by side inside the screw barrel, and ten temperature control zones are arranged in turn inside the screw barrel, located in the first temperature control zone 1.1, the second temperature control zone 1.2, and the third temperature control zone. The surface of the twin-screw 1.11 between the temperature control zone 1.3, the seventh temperature control zone 1.7, the eighth temperature control zone 1....

Embodiment 2

[0042] Prepare Example 2 with the preparation process of Example 1 and the twin-screw extruder, that is, 75 parts of PP resin, 25 parts of filler, 5 parts of toughening agent, 0.5 part of antioxidant, and 0.4 part of light stabilizer are mixed and added to the equipment In the twin-screw extruder with vacuum, the supercritical carbon dioxide is introduced into the middle of the twin-screw extruder, and the vacuum is drawn at the same time, so that the supercritical carbon dioxide and the polypropylene material are mixed, melted and extruded in a closed, high-pressure screw barrel, while A supercritical low-odor, low-emission polypropylene material is produced.

[0043] Wherein, the polypropylene used is a mixture of homopolymerization and copolymerization in a weight ratio of 1:4, the elastomer is an ethylene-butylene copolymer, the light stabilizer is a hindered amine, and the filler is a talcum powder. During the preparation process, Introduce supercritical carbon dioxide fl...

Embodiment 3

[0045] The preparation method and materials are the same as in Example 2, except that in the preparation process, the fluid flow rate of feeding supercritical carbon dioxide is 20m 3 / h.

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Abstract

The invention discloses a method for preparing a supercritical low-odor and low-emission polypropylene material. The method comprises the steps of mixing the polypropylene material and adding the mixed polypropylene material to a vacuumized twin-screw extruder; and introducing supercritical carbon dioxide to the middle of the twin-screw extruder, and carrying out mixing melting and extruding on the supercritical carbon dioxide and the polypropylene material in an air-tight high-pressure screw cylinder to prepare the supercritical low-odor and low-emission polypropylene material. By adopting an SCF-CO2 extraction method, small molecule volatile matters can be extracted when the material is in a molten state, and then evacuated, so that the odor level of the material is reduced to a 3.5 level from a 4.5 level, the total carbon content can be reduced by over 90%, and meanwhile, the method does not have influence on the performance of the material basically.

Description

technical field [0001] The invention relates to an environment-friendly material, in particular to a method for preparing a supercritical low-odor and low-emission material. Background technique [0002] As China has become the world's largest automobile production and sales market, the awareness of environmental protection among drivers and passengers has gradually increased, and the air pollution inside automobiles has attracted more and more attention. Out of consideration for the safety of drivers and passengers, my country has issued corresponding air quality control standards in cars (GB / T 27630). As one of the main sources of air pollution in automobiles, automotive interior materials emit toxic gases such as benzene, formaldehyde, and xylene, which can cause serious harm to human liver, kidney, respiratory system, hematopoietic organs, and immune functions. In terms of material selection, automobile OEMs have paid attention to the use or replacement of environmental...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/12C08L23/08C08L23/16C08L53/02C08K13/02C08K3/34C08K3/26C08K3/30C08K5/37C08K5/134C08K5/526B29C47/00B29C47/64B29C47/92B01D11/04B29C48/67B29C48/92
CPCB01D11/0407C08L23/12C08L23/14B29C48/022B29C48/535B29C48/67B29C48/92B29C2948/92704B01D2011/007C08K2201/014C08K2003/3045C08K2003/265C08L2205/02C08L2205/025C08L2205/03C08L2205/035C08L23/0815C08L23/16C08L53/025C08K13/02C08K3/34C08K3/26C08K3/30C08K5/37C08K5/1345C08K5/526Y02P20/54B29B7/482B29B7/72B29B7/823B29B7/826
Inventor 赵东闫溥周大华邵之杰李荣群
Owner ORINKO NEW MATERIAL CO LTD
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