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Low VOC (Volatile Organic Compound) polypropylene composition and preparation method thereof

A polypropylene composition and polypropylene technology, which are applied in the field of polypropylene compositions, can solve the problems of limited effect, no consideration of the influence of processing aids on VOC, compatibility and durability problems, etc., and achieve good antioxidant effect, Low input cost and delayed release effect

Active Publication Date: 2015-06-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patents (CN 1727389A, CN1727390A) disclose the use of fine-pore silica gel and molecular sieves as adsorbents to reduce the odor of materials and the volatilization of organic compounds. The products produced by this method can play some roles, but there is a problem of adsorption balance , at a higher temperature, the equilibrium moves to the direction of desorption, and there is a hidden danger of re-release of VOC in the later stage of polypropylene material
Chinese patent (CN 101570612A) reduces VOC content by adding an inorganic photocatalyst to decompose small organic molecules, but its effect is limited
Chinese patent (CN101255252A) reduces the VOC of the material by adding an organic repellant such as isopropanol / water, but this method has compatibility and persistence problems
However, none of the above methods considered the impact of processing aids on VOC, so they cannot fundamentally solve the problem of VOC produced by various factors

Method used

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  • Low VOC (Volatile Organic Compound) polypropylene composition and preparation method thereof
  • Low VOC (Volatile Organic Compound) polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～15

[0025] Copolymerized polypropylene (K9020, Sinopec Beijing Yanshan Branch), fully vulcanized powder silicone rubber (brand VP-602, average particle size 0.1 μm, gel content 90wt%; Beijing Research Institute of Chemical Industry), antioxidant (antioxidant Agent 1010 and antioxidant 168 parts by weight ratio 1: (1~2), Swiss Ciba Specialty Chemical Company), benzofuranone free radical scavenger (Irganox HP 136, Swiss Ciba Specialty Chemical Company) were put into high-speed In the mixer, stir at a speed of 300 rpm for 3 minutes to fully mix the components; then pass the above mixed material through the BUSS mixing unit (MKD-30, Swiss BUSS company) within the range of 190 ° C to 230 ° C. , extruded and granulated under the condition of maintaining a vacuum degree of -0.08MPa to obtain a polypropylene composition with low VOC content. Its specific formula is shown in Table 1, wherein the content of each component is calculated in parts by weight.

[0026] The extruded pellets were...

Embodiment 16～30

[0033] Homopolypropylene (K1712, Sinopec Beijing Yanshan Branch), fully vulcanized powder silicone rubber (brand VP-602, average particle size 0.1 μm, gel content 90wt%; Beijing Research Institute of Chemical Industry), antioxidant (antioxidant Oxygen 1010 and antioxidant 168 parts by weight ratio 1: (1~2), Swiss Ciba Fine Chemicals), benzofuranone free radical scavenger (Irganox HP 136, Swiss Ciba Fine Chemicals) put into In a high-speed mixer, stir at a speed of 300 rpm for 3 minutes to fully mix the components; then pass the above-mentioned mixed material through a BUSS mixing unit (MKD-30, Swiss BUSS Co., Ltd. ), extruding and granulating under the condition of maintaining a vacuum degree of -0.08MPa to obtain a polypropylene composition with low VOC content. Its specific formula is shown in Table 2, wherein the content of each component is calculated in parts by weight.

[0034] The extruded pellets were dried in a constant temperature oven at 80°C for 2 hours, and the T...

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Abstract

The invention discloses a low VOC (Volatile Organic Compound) polypropylene composition and a preparation method thereof. The VOC polypropylene composition comprises the following mixed ingredients: 100 parts by weight of polypropylene, 0.03-2 parts by weight of a benzofuran ketone free radical hunting agent and 0.05-10 parts by weight of fully vulcanized powder silicon rubber, wherein the average particle size of the rubber particle of the fully vulcanized powder silicon rubber is 0.05-1mu m; the fully vulcanized powder silicon rubber has a cross-linking structure; and the gel content is 60wt% or higher. According to the VOC polypropylene composition, by using the method that the fully vulcanized powder silicon rubber and the benzofuran ketone free radical hunting agent are added, the VOC content of a low polypropylene composition is greatly reduced, the operation process is simple, and the composition is applicable to the fields of high-class automotive upholsteries, medical and food package materials, and the like with high requirements on environmental-friendliness.

Description

technical field [0001] The present invention relates to a polypropylene composition, more particularly, to a polypropylene composition with low VOC content and a preparation method thereof. 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) to pollute the environment and endanger people's health in varying degrees, which largely limits the use of polypropylene materials in high-end automobiles with high environmental protection requirements. Applications in fields such as decorative parts, medical and food packaging materials. Therefore, the research and development of environmentally friendly low-VOC polypropylene resin and materials can expand the application field of PP and meet the requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L83/04C08K5/1535
Inventor 金滟康鹏蔡涛丁树岩石胜鹏刘善元张静
Owner CHINA PETROLEUM & CHEM CORP
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