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Modified polypropylene resin and preparation method

A polypropylene resin and modification technology, which is applied in the field of plastic processing, can solve the problems that the nucleating agent is not water-soluble and the content of the nucleating agent is high, and achieves the effects of improved mechanical properties, simple preparation process and good effect.

Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN101845171A discloses a polypropylene stiffening composition, which is improved by sodium benzoate and bis[2,2'-methylene-bis(4,6-di-tert-butylphenyl)]sodium phosphate. It improves the bending performance, impact strength and heat distortion temperature of PP products, and has a better modification effect than adding a single-component nucleating agent, and has a certain synergistic effect, but the required nucleating agent content is higher
Chinese patent 200780012801.8 adopts water-soluble nucleating agent HPN-68 to be dissolved in water as the water phase, and forms a microemulsion with other components such as oil phase, surfactant, co-surfactant, etc. After adding polypropylene, the nucleating agent can Better dispersion in polymers, improving crystallization efficiency, but only involves water-soluble nucleating agents, and many nucleating agents are not water-soluble
Liquid antioxidants are commonly used in rubber, but to a lesser extent in polypropylene

Method used

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  • Modified polypropylene resin and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] NA11[2,2'-methylenemetha-bis(4,6-di-n-butylphenol)sodium phosphate] (Zhongda Chemical Co., Ltd., brand NP-508) was dissolved in absolute ethanol ( Analytical pure); sodium benzoate (Tianjin Guangfu Fine Chemical Research Institute) was dissolved in deionized water at a concentration of 18wt%; stirred with a magnetic stirrer, followed by adding anhydrous ethanol in which NA11 was dissolved, and 1135 liquid antioxidant [β -(3,5-di-tert-butyl-4-hydroxyphenyl) isooctyl propionate, Guangzhou Zhiyi Trading Co., Ltd.], Tween 80 (commercially available), deionized water, the quality of the above components is 100% The component contents were 54wt%, 18wt%, 18wt%, and 10wt%, respectively, and a magnetic stirrer was used for stirring. The rotating speed of the magnetic stirrer was 200 rpm (rotation per minute), and the stirring time was 5 minutes. The mixed microemulsion obtains 1# binary composite nucleating agent.

Embodiment 2

[0039]NA11[2,2'-methylenemetha-bis(4,6-di-n-butylphenol)sodium phosphate] (Zhongda Chemical Co., Ltd., brand NP-508) was dissolved in absolute ethanol ( Analytical pure); sodium benzoate (Tianjin Guangfu Fine Chemical Research Institute) was dissolved in deionized water at a concentration of 18wt%; stirred with a magnetic stirrer, and then added anhydrous ethanol in which NA11 was dissolved, and 1520 liquid antioxidant [2 , 4-two (n-octylsulfanyl) o-cresol, Guangzhou Zhiyi Trading Co., Ltd.], Tween 80 (commercially available), deionized water, the mass percentages of the above components are respectively 54wt%, 18wt%, 18wt%, 10wt%, stir with a magnetic stirrer, the speed of the magnetic stirrer is 200rpm (rotation per minute), and the stirring time is 5 minutes. The mixed microemulsion obtains 2# binary composite nucleating agent.

Embodiment 3

[0041] NA11[2,2′-methylenemetha-bis(4,6-di-n-butylphenol)sodium phosphate] (Zhongda Chemical Co., Ltd., brand NP-508) was dissolved in absolute ethanol at a concentration of 10wt% (analytical pure); Sodium benzoate (Tianjin Guangfu Fine Chemical Research Institute) was dissolved in deionized water at a concentration of 10wt%; stirred with a magnetic stirrer, and then added anhydrous ethanol dissolved in NA11, 1135 liquid antioxidant [β- (3,5-di-tert-butyl-4-hydroxyphenyl) isooctyl propionate, Guangzhou Zhiyi Trading Co., Ltd.], Tween 80 (commercially available), deionized water dissolved in sodium benzoate, the above group The mass percentages are 40wt%, 20wt%, 20wt%, and 20wt%, respectively. A magnetic stirrer is used for stirring. The rotating speed of the magnetic stirrer is 200rpm (revolutions per minute), and the stirring time is 5 minutes. The mixed microemulsion obtains 3# binary composite nucleating agent.

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Abstract

The invention discloses a modified polypropylene resin and a preparation method. The polypropylene resin comprises polypropylene resin and a modified auxiliary agent through blending, the modified auxiliary agent is a microemulsion of a liquid anti-oxidant and an organic composite nucleating agent; the organic composite nucleating agent is sodium benzoate and 2,2'-methylene-dis (4,6-di-n-butylamide)sodium phosphate; the weight ratio of two is 95: 5-5: 95. The crystallization performance and mechanical property of the modified polypropylene resin are increased, and the cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of plastic processing, and furthermore, relates to a modified polypropylene resin and a preparation method. Background technique [0002] Polypropylene is a widely used thermoplastic with low price and good overall performance. By adding nucleating agent, the mechanical and optical properties of polypropylene products can be further improved, and the high performance of polypropylene can be realized. Nucleating agents for polypropylene are a class of additives used to improve the crystallization behavior of polypropylene, thereby improving its physical, mechanical and thermodynamic properties. Nucleating agents are divided into inorganic, sorbitol, phosphate, rosin and polymer nucleating agents. [0003] At present, the polypropylene nucleating agent widely used in the market is an organic nucleating agent, such as NA11 [2,2'-methylene-di(4,6-di-n-butylphenol) sodium phosphate], NA-2l[ Methylenebis(2,4-di-tert-butyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K9/00C08K5/00C08K5/098C08K5/527
CPCC08K5/00C08K5/098C08K5/527C08L2205/24C08L23/12
Inventor 郭敏刘轶群潘国元张杨严昊
Owner CHINA PETROLEUM & CHEM CORP
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