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Polyolefin composition with high mechanical properties and preparation method thereof

A technology for mechanical properties and polyolefins, applied in the field of polyolefin compositions and their preparation, can solve the problems of impossible to achieve uniform distribution, affect the light transmittance of materials, and high mechanical properties, achieve low water vapor transmission rate, and improve rigidity. , the effect of good light transmission performance

Active Publication Date: 2020-04-21
SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet the epoxy resin auxiliary agent that this invention prepares is white lump, adds polypropylene material after grinding, thereby there is following problem: (1) because the particle diameter of this auxiliary agent is relatively large, even if grinding for a long time, also It is impossible to obtain a very fine particle size, which affects its dispersion in the material system, and uneven dispersion will affect the light transmittance of the material; (2) Since the additive particles and the polypropylene material are physically blended, Therefore, it is impossible to achieve complete uniform distribution. Therefore, in the material system, some places have high mechanical properties, and some places have low mechanical properties, resulting in uneven distribution.

Method used

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  • Polyolefin composition with high mechanical properties and preparation method thereof
  • Polyolefin composition with high mechanical properties and preparation method thereof
  • Polyolefin composition with high mechanical properties and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A polyolefin composition with high mechanical properties, the main steps are as follows:

[0034] Weigh 100g homopolypropylene, 10g epoxy-POSS, 0.5g 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 0.05g trimethylol propyl trimethacrylate Add the blender and stir for 30 minutes, then put the mixture into the hopper of the extruder. The temperature of each section of the extruder is between 150-200℃, the screw speed is 150r / min, and the melt is extruded and cooled in a water tank. , Towed to the pelletizer and dried after pelletizing.

Embodiment 2

[0036] A polyolefin composition with high mechanical properties, the main steps are as follows:

[0037] Weigh 100g homopolypropylene, 25g epoxy-POSS, 0.5g 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 0.05g trimethylol propyl trimethacrylate Add the blender and stir for 30 minutes, then put the mixture into the hopper of the extruder. The temperature of each section of the extruder is between 150-200℃, the screw speed is 150r / min, and the melt is extruded and cooled in a water tank. , Towed to the pelletizer and dried after pelletizing.

Embodiment 3

[0039] A polyolefin composition with high mechanical properties, the main steps are as follows:

[0040] Weigh 100g homopolypropylene, 40g epoxy-POSS, 0.5g 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 0.05g trimethylol propyl trimethacrylate Add the blender and stir for 30 minutes, then put the mixture into the hopper of the extruder. The temperature of each section of the extruder is between 150-200℃, the screw speed is 150r / min, and the melt is extruded and cooled in a water tank. , Towed to the pelletizer and dried after pelletizing.

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Abstract

The invention discloses a polyolefin composition which is mainly composed of the following components (by weight): 20-100 parts of polyolefin resin, 1-60 parts of epoxy polyhedral oligomeric silsesquioxane, 0.1-5 parts of a cross-linking agent and 0.01-1 part of an assistant crosslinker. According to the invention, a small amount of epoxy polyhedral oligomeric silsesquioxane is added; as the polysilsesquioxane has a plurality of reactive groups, the polysilsesquioxane and the polypropylene resin can form a cross-linked network structure under the action of the cross-linking agent, and inorganic phases and organic phases are combined through strong chemical bonds, so that the mechanical properties such as rigidity, impact strength and the like of the polyolefin material are improved.

Description

Technical field [0001] The invention relates to a polyolefin composition with high mechanical properties and a preparation method thereof, and belongs to the technical field of polyolefin functional master batches. Background technique [0002] Polypropylene PP is one of the five general-purpose plastics. Its raw materials are abundant, cheap, easy to process and shape, and product comprehensive performance is excellent, so it has been widely used. As a semi-crystalline polymer material, PP has excellent properties such as high stiffness, corrosion resistance, and electrical insulation. In general industrial polypropylene resin, the isotactic structure content is about 95%, and the rest is random or syndiotactic polypropylene. Due to the regular structure and high degree of crystallization, the melting point of polypropylene can be as high as 167℃, heat resistance, corrosion resistance, surface rigidity and scratch resistance are very good, but polypropylene changes rapidly from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L83/06C08G77/04C08G77/38C08G77/20C08J5/18
CPCC08L23/12C08G77/045C08G77/38C08G77/20C08J5/18C08L2201/10C08J2323/12C08J2483/06C08L2201/04C08L83/06
Inventor 罗吉江符书臻崔如玉花超朱瑜芳
Owner SUZHOU DUCHAMPS ADVANCED MATERIALS CO LTD
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