Low-VOC low-odor polypropylene resin composition and preparation method thereof

A polypropylene resin and composition technology, which is applied in the field of low VOC and low odor polypropylene resin composition and the preparation of low VOC and low odor polypropylene resin composition, can solve the problems of limited effect, complex components, adsorption balance and the like , to achieve the effect of improving efficiency, improving dispersion effect and high thermal stability

Active Publication Date: 2020-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, CN101570612A reduces VOC content by adding an inorganic photocatalyst to decompose small organic molecules, but the components are complex and the effect is limited
CN101255252A reduces the VOC of material by adding organic matter repellant (such as isopropanol / water), but there are compatibility and persistence problems in this way
Although the aforementioned method of using adsorbent can play a certain role in reducing the VOC of polypropylene, there is still a problem of adsorption balance. At higher temperatures, the balance moves to the direction of desorption, resulting in the possibility of re-release of VOC in polypropylene material later. Hidden danger

Method used

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  • Low-VOC low-odor polypropylene resin composition and preparation method thereof
  • Low-VOC low-odor polypropylene resin composition and preparation method thereof
  • Low-VOC low-odor polypropylene resin composition and preparation method thereof

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Experimental program
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Effect test

Embodiment approach

[0039] According to a specific embodiment, the preparation method includes the following steps:

[0040] (1) Mix the modified carbon nanotubes, octaisobutylsilsesquioxane, acid absorbing agent and antioxidant uniformly to obtain a VOC suppression mixture;

[0041] (2) uniformly mixing the VOC suppression mixture and the polypropylene to obtain a premix;

[0042] (3) Melt-blending the premix to obtain the polypropylene resin composition.

[0043] According to the present invention, in step (2), the polypropylene is preferably dry treated polypropylene. The mixing in both steps (1) and (2) is preferably dry mixing.

[0044] 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.

[0045] In addition, in the process of processing, according to the needs of practical applications, after melt blending, various moldings can also be carried out, so that ...

Embodiment 1-10

[0050] Examples 1-10 are used to illustrate the low-VOC and low-odor polypropylene resin composition of the present invention and its preparation method.

[0051] Modified carbon nanotubes (multi-walled carbon nanotubes coated with divinylbenzene, DVB-CNTs-1, Beijing University of Chemical Technology, 30nm in diameter, 10μm in length, and 30nm in thickness of the cladding layer), eight isobutyl times Semisiloxane (MS0825, American Hybridplastic Company), acid absorbing agent (calcium stearate, Tianjin Gangchang Chemical Co., Ltd.), antioxidant (antioxidant 1010, belongs to hindered phenolic antioxidant, chemical name is Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, and antioxidant 168, belong to phosphate antioxidants, the chemical name is three (2,4-di tert-butylphenol) phosphite, both from BASF, Germany) into a high-speed mixer, stirred at a speed of 300 rev / min for 2 minutes, fully mixed the components to obtain the VOC inhibitor mixture; ...

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Abstract

The invention relates to the field of plastics, and provides a low-VOC low-odor polypropylene resin composition and a preparation method thereof. The low-VOC low-odor polypropylene resin composition is prepared from the following blended components: polypropylene, a modified carbon nano tube, octaisobutyl silsesquioxane, an acid acceptor and an antioxidant, wherein relative to 100 parts by weightof polypropylene, the modified carbon nano tube accounts for 0.04 to 1.6 parts by weight, the octaisobutyl silsesquioxane accounts for 0.04 to 1.8 parts by weight, the acid acceptor accounts for 0.05to 1 part by weight, and the antioxidant accounts for 0.05 to 1 part by weight; and the modified carbon nano tube is a multi-walled carbon nano tube coated with divinyl benzene. The polypropylene composition has a low VOC (volatile organic compound) content and smell, the total VOC content can be lower than 50 [mu]g.C / g, and the smell can reach 3.5 grade or below.

Description

technical field [0001] The invention belongs to the field of plastics, and more specifically relates to a low-VOC and low-odor polypropylene resin composition and a preparation method of the low-VOC and low-odor 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 all have the problems of releasing volatile organic compounds (VOC) and odors to pollute the environment and endanger people's health in varying degrees, which largely limits the use of polypropylene materials in high-end products with high environmental protection requirements. Applications in automotive interior parts, medical and food packaging materials, etc. Therefore, the research and development of environmentally friendly low-VOC and low-odor polypropylene resin an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L83/04C08K9/10C08K3/04C08K5/098C08K5/134C08K5/526
CPCC08L23/12C08K2201/011C08L83/04C08K9/10C08K3/041C08K5/098C08K5/1345C08K5/526
Inventor 康鹏金滟蔡涛石胜鹏
Owner CHINA PETROLEUM & CHEM CORP
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