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VOC (Volatile Organic Compounds)-inhibited master batch for polypropylene, and preparation method and applications thereof

A polypropylene and masterbatch technology, applied in the field of plastics, can solve problems such as compatibility and persistence, and achieve the effect of delaying release, preventing emission and improving dispersion effect.

Active Publication Date: 2016-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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
Although the above-mentioned 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, and there is a hidden danger of later release of VOC in polypropylene materials.

Method used

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  • VOC (Volatile Organic Compounds)-inhibited master batch for polypropylene, and preparation method and applications thereof

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preparation example Construction

[0045] The preparation method of cellulose nanocrystals is as follows: according to GB / T2677.6-1994, GB / T2677.8-1994, GB / T2677.10-1995, sequentially remove the extract, lignin and hemicellulose in the wood, Cellulose samples were obtained by freeze-drying, and then cellulose nanocrystals were prepared according to the method reported by Gray D.G. (Biomacromolecules. 2005, 6(2):1048-1054.).

[0046] The specific steps include: 1. Wood pulp is ground into 40-mesh cellulose powder by a grinder; 2. The cellulose powder is added to 64 wt% sulfuric acid aqueous solution at a sulfuric acid / cellulose feeding ratio of 15 mL / g, and reacted for 30 minutes under stirring at 45°C. 3. Pour 10 times the volume of deionized water into the reaction solution to terminate the hydrolysis reaction. 4. Centrifuge the solution in the previous step (centrifugation speed is 10000rpm / min, centrifugation time is 15min), pour the upper layer solution to remove sulfuric acid molecules, and repeat this ste...

Embodiment 1～11

[0056] Preparation of low VOC polypropylene composition:

[0057] Put polypropylene (K9020, Sinopec Beijing Yanshan Branch), the above VOC suppression masterbatch for polypropylene and other processing aids into a high-speed mixer, and stir for 3 minutes at a speed of 300 rpm to make each component fully well mixed. Subsequently, the above-mentioned mixed material is passed through a BUSS kneading unit in the range of 190°C to 230°C, and extruded and granulated under the condition of maintaining a vacuum degree of -0.08MPa to obtain a polypropylene material with low VOC content. Its specific formula is shown in Table 2, wherein the content of each component is calculated in parts by weight.

[0058] The extruded pellets were dried in a constant temperature oven at 80°C for 2 hours, and the TVOC was tested according to the standard VDA277 of the German Federation of Automobile Industries. The specific performance results are shown in Table 2.

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Abstract

The invention relates to a VOC (Volatile Organic Compounds)-inhibited master batch for polypropylene, and a preparation method thereof, and an application thereof. The VOC-inhibited master batch comprises the following mixed components in parts by weight: on the basis of 100 weight parts of polypropylene, 10-60 parts of fully-vulcanized powder silicone rubber, 10-80 parts of cellulose nano crystal, and 5-40 parts of an acid absorption agent. wherein the average particle size of rubber particles in the fully-vulcanized powder silicone rubber is 0.05-1 micrometers, and the gel content is 60wt% or above; surface charge density of the cellulose nano crystal is 0.1-0.4e / nm<2>, length is 90-300 nm, and width is 5-15 nm. The VOC-inhibited master batch for polypropylene can effectively inhibiting generation of VOC in a polypropylene material, the content of a total volatile organic compound (TVOC) in the polypropylene material is lower than 50 [mu]g.C / g, so that the disadvantages in the prior art can be solved. The method has the advantages of simple and reliable operation process, low investment cost, and wide application prospect.

Description

technical field [0001] The invention relates to the field of plastics, in particular to a VOC suppression masterbatch for polypropylene, a preparation method and application 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 requirements of g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L83/04C08L1/02C08K3/22C08K3/34C08K3/26C08J3/22
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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