A kind of anti-aging low VOC polypropylene resin composition and preparation method thereof

A technology of polypropylene resin and composition, which is applied in the field of preparation of anti-aging low-VOC polypropylene resin composition and anti-aging low-VOC polypropylene resin composition, and can solve the problem of VOC increase, unresolved, and non-considered polypropylene VOC Issues such as the impact of release, to achieve the effect of reducing the total amount of VOC, inhibiting the generation of aging, and avoiding the increase of VOC

Active Publication Date: 2022-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The inventors of the present invention have found through research that the above-mentioned prior art does not consider the impact of aging on the release of VOC from polypropylene, and the problem of VOC increase due to aging has not been solved.

Method used

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  • A kind of anti-aging low VOC polypropylene resin composition and preparation method thereof
  • A kind of anti-aging low VOC polypropylene resin composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0038] According to a specific embodiment, the preparation method includes the following steps:

[0039] (1) Mix the octaisobutylsilsesquioxane, hindered amine light stabilizer, acid absorbing agent and antioxidant uniformly to obtain a VOC inhibiting mixture;

[0040] (2) uniformly mixing the VOC suppression mixture and the polypropylene to obtain a premix;

[0041] (3) Melt-blending the premix to obtain the polypropylene resin composition.

[0042] According to the present invention, in step (2), the polypropylene is preferably dry treated polypropylene. The mixing in steps (1) and (2) is all dry mixing.

[0043] In order to remove VOC better, it is preferable to keep the vacuum degree of the vacuum system of the equipment above -0.05MPa, more preferably above -0.08MPa during the melt blending.

[0044] In addition, in the process of processing, according to the needs of practical applications, after melt blending, various moldings can be carried out, so that the aging-re...

Embodiment 1-13

[0049] Examples 1-13 are used to illustrate the aging-resistant low-VOC polypropylene resin composition of the present invention and its preparation method.

[0050] The light stabilizer (2,2,6,6-tetramethyl-4-piperidine stearate, purchased from Shanghai Yijing Industrial Co., Ltd.; T81, T70 and T79, the molecular weight is 350-450g / mol, wherein The content of 2,2,6,6-tetramethyl-4-piperidine fatty acid ester is more than 90% by weight, Beijing Tiangang Auxiliary Co., Ltd.), octaisobutylsilsesquioxane (MS0825, the United States Hybridplastic company), acid absorbing agent (calcium stearate, Tianjin Gangchang Chemical Co., Ltd.), antioxidant (antioxidant 1010, belongs to hindered phenolic antioxidant, chemical name is four [β-(3,5 -Di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, and antioxidant 168, which belongs to phosphate antioxidant, chemical name is tris(2,4-di-tert-butylphenol) phosphite , both from BASF, Germany) were put into a high-speed mixer, stir...

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Abstract

The invention relates to the field of plastics, and provides an aging-resistant low-VOC polypropylene resin composition and a preparation method thereof. The polypropylene resin composition comprises the following components blended: polypropylene, octaisobutylsilsesquioxane, hindered amine light stabilizer, acid absorbing agent and antioxidant. The polypropylene resin composition of the present invention has a color fastness of 4-5 after 5 cycles of light aging, no cracks on the surface, and significantly reduced total volatile organic compounds and odors, which well solves the deficiencies of the prior art, and, The operation process is simple and reliable, and the input cost is low. It is suitable for high-end automotive interior parts and other fields with high environmental protection requirements.

Description

technical field [0001] The invention belongs to the field of plastics, and in particular relates to an aging-resistant low-VOC polypropylene resin composition and a preparation method of the aging-resistant low-VOC polypropylene resin composition. Background technique [0002] Polypropylene (PP) has been widely used in various fields of people's life because of its excellent comprehensive properties, wide range of sources, high quality and low price. However, the existing polypropylene materials and products have the problems of releasing volatile organic compounds (VOC) and odors to pollute the environment and endanger people's health to varying degrees, especially the degradation of polypropylene materials and products due to photothermal aging during long-term use. Secondary VOC release has become a problem that must be solved in the application of polypropylene in the fields of high-end automotive interior parts, medical and food packaging materials with high environment...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08L23/14C08L83/04C08K5/3435C08K5/134C08K5/526
CPCC08L23/14C08L2201/08C08L83/04C08K5/3435C08K5/134C08K5/526
Inventor康鹏金滟石胜鹏蔡涛
OwnerCHINA PETROLEUM & CHEM CORP