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High-fluidity and high-gloss polypropylene composition and preparation method thereof

A polypropylene composition and high-fluidity technology, applied in the field of high-fluidity and high-gloss polypropylene composition and its preparation, can solve the problems of complicated and expensive modifiers and the like

Pending Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a high-fluidity ultra-high-gloss impact-resistant polypropylene resin, which solves the problems that the preparation of high-gloss impact-resistant polypropylene by the current technology must be modified downstream, and the modifier is complicated and expensive. , with good fluidity, high gloss, good toughness, only need to add common additives, low cost

Method used

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  • High-fluidity and high-gloss polypropylene composition and preparation method thereof
  • High-fluidity and high-gloss polypropylene composition and preparation method thereof

Examples

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Effect test

Embodiment 1

[0050] Using propylene as raw material, feeding 30 tons per hour, the catalyst titanium tetrachloride, carrier MgCl 2 , electron donor isobutyldimethoxysilane and cocatalyst triethylaluminum are added to the loop reactor, and 2kg of catalyst is entered per hour, and the control Al / Mg=4, Al / Si=4 controls the loop reactor The reaction pressure is 3.4MPa, the reaction temperature is 70°C, and the hydrogen concentration in the reactor is 0.26%, to obtain a polypropylene slurry. The polypropylene slurry material enters the gas phase reactor, and the reaction pressure of the gas phase reactor is controlled to be 1.2MPa, the reaction temperature is 68°C, and the ethylene concentration in the reactor is controlled to be 6%. The block copolymerized polypropylene powder is 11.8wt%, the ethylene content is 2.9wt%, and the particle size distribution of ethylene-propylene rubber is 10-300nm. Take by weight 100 parts of block copolymerized polypropylene (see figure 1 ), 0.1 part of nuclea...

Embodiment 2

[0052] Using propylene as raw material, feeding 30 tons per hour, the catalyst titanium tetrachloride, carrier MgCl 2 , electron donor isobutyldimethoxysilane and cocatalyst triethylaluminum are added to the loop reactor, and 2kg of catalyst is entered per hour, and the control Al / Mg=4, Al / Si=4 controls the loop reactor The reaction pressure is 3.4MPa, the reaction temperature is 70°C, and the hydrogen concentration in the reactor is 0.25%, to obtain a polypropylene slurry. The polypropylene slurry material enters the gas phase reactor, and the reaction pressure of the gas phase reactor is controlled to be 1.2MPa, the reaction temperature is 68°C, and the ethylene concentration in the reactor is controlled to be 6.2%. The block copolymerization polypropylene powder is 7.7wt%, ethylene content 2.0wt%, ethylene propylene rubber particle size distribution in 10-250nm. Weigh 100 parts of block copolymer polypropylene, 0.1 part of nucleating agent substituted sodium aryl phosphate...

Embodiment 3

[0054] Using propylene as raw material, feeding 30 tons per hour, the catalyst titanium tetrachloride, carrier MgCl 2 , electron donor isobutyldimethoxysilane and cocatalyst triethylaluminum are added to the loop reactor, and 2kg of catalyst is entered per hour, and the control Al / Mg=4, Al / Si=4 controls the loop reactor The reaction pressure is 3.4MPa, the reaction temperature is 70°C, and the hydrogen concentration in the reactor is 0.25%, to obtain a polypropylene slurry. The polypropylene slurry enters the gas phase reactor, the reaction pressure of the gas phase reactor is controlled to be 1.2MPa, the reaction temperature is 68°C, the ethylene concentration in the reactor is controlled to be 6.4%, and the melt flow rate is 28.7g / 10min, the content of ethylene-propylene rubber is The block copolymerization polypropylene powder is 5.2wt%, ethylene content 1.6wt%, ethylene propylene rubber particle size distribution in 10-200nm. Weigh 100 parts of block copolymer polypropyle...

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Abstract

The invention provides a high-fluidity and high-gloss polypropylene composition and a preparation method thereof. The high-fluidity and high-gloss polypropylene composition provided by the invention comprises block co-polypropylene, a nucleating agent, an antioxidant and an acid acceptor, wherein the block co-polypropylene contains ethylene propylene rubber. The high-fluidity and high-gloss polypropylene composition provided by the invention has high glossiness, high fluidity, rigidity and toughness, has the advantages of elegance and attractiveness of ABS, and can be used in the fields of household appliance shells, automobile ornaments and the like.

Description

technical field [0001] The invention relates to the field of polypropylene compositions, in particular to a high-fluidity and high-gloss polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene resin is widely used in the home appliance and automobile industries. Its advantage is that it can not only replace metal and engineering plastics, but also has the characteristics of easy recycling, light weight and relatively low price. These application fields require materials to have high mechanical properties (rigidity and toughness), and ideal glossiness to obtain the aesthetic effect of the product. High-gloss polypropylene is currently gradually replacing materials such as HIPS and ABS, and is used in home appliance shells such as rice cookers, electric kettles, microwave ovens, vacuum cleaners, washing machines, and automotive interior components. [0003] Both homopolymerized and random copolymerized polypropylene have high gl...

Claims

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Application Information

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IPC IPC(8): C08L53/00C08L23/16C08K5/00C08K5/523
CPCC08L53/00C08L2205/24
Inventor 封水彬梁胜彪蒋文军柯君豪黄艳芳姜武会
Owner CHINA PETROLEUM & CHEM CORP
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