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Special material for high-impact-strength polypropylene and preparation method thereof

A high-impact polypropylene and special-purpose material technology is applied in the field of high-impact polypropylene special-purpose material and its preparation, which can solve the problems of limited toughening effect of polypropylene materials, inability to toughen and modify polypropylene, and the like, and achieve simple process conditions. The effect of easy control, good tensile properties and low production cost

Active Publication Date: 2016-04-20
HUBEI ENG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of the elastic interfacial phase provides a good interfacial bond between the inorganic rigid particles with a certain deformation ability and the polypropylene matrix, which is also the main point of the toughening of the inorganic rigid particles. , although the strength and toughness of the polypropylene material can be guaranteed, the added inorganic rigid particles have a limited toughening effect on the polypropylene material
[0005] Although the above two methods have played some roles in toughening and modifying polypropylene, each method has certain limitations and cannot perform toughening and modifying polypropylene well.

Method used

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  • Special material for high-impact-strength polypropylene and preparation method thereof
  • Special material for high-impact-strength polypropylene and preparation method thereof
  • Special material for high-impact-strength polypropylene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A special material for high-impact polypropylene, prepared from the following raw materials in parts by weight:

[0045]

[0046] The preparation method of above-mentioned high-impact polypropylene special material, its steps are:

[0047] 1) Take polypropylene, ethylene-octene copolymer, liquid EPDM rubber, ultrafine silicon dioxide and antioxidant 1010 according to the above proportioning ratio;

[0048] 2) Put ultrafine silicon dioxide and liquid EPDM rubber in a high-speed mixer and mix for 3 minutes, and control the mixing speed of the high-speed mixer to 25000r / min to obtain modified core-shell structure particles;

[0049] 3) Put polypropylene and ethylene-octene copolymer in low-speed mixer A and mix for 2 minutes, then put them in twin-screw extruder A to extrude and granulate, and control the barrel of twin-screw extruder A The temperature is 150°C, the temperature in the second zone is 180°C, the temperature in the third zone is 190°C, the die temperature...

Embodiment 2

[0052] A special material for high-impact polypropylene, prepared from the following raw materials in parts by weight:

[0053]

[0054] The preparation method of above-mentioned high-impact polypropylene special material, its steps are:

[0055] 1) Take polypropylene, ethylene-octene copolymer, liquid EPDM rubber, ultrafine silicon dioxide and antioxidant 1010 according to the above proportioning ratio;

[0056] 2) Put ultrafine silicon dioxide and liquid EPDM rubber in a high-speed mixer and mix for 3 minutes, and control the mixing speed of the high-speed mixer to 25000r / min to obtain modified core-shell structure particles;

[0057] 3) Put polypropylene and ethylene-octene copolymer in low-speed mixer A and mix for 2 minutes, then put them in twin-screw extruder A to extrude and granulate, and control the barrel of twin-screw extruder A The temperature is 150°C, the temperature in the second zone is 180°C, the temperature in the third zone is 190°C, the die temperature...

Embodiment 3

[0060]A special material for high-impact polypropylene, prepared from the following raw materials in parts by weight:

[0061]

[0062] The preparation method of above-mentioned high-impact polypropylene special material, its steps are:

[0063] 1) Take polypropylene, ethylene-octene copolymer, liquid EPDM rubber, ultrafine silicon dioxide and antioxidant 1010 according to the above proportioning ratio;

[0064] 2) Put ultrafine silicon dioxide and liquid EPDM rubber in a high-speed mixer and mix for 3 minutes, and control the mixing speed of the high-speed mixer to 25000r / min to obtain modified core-shell structure particles;

[0065] 3) Put polypropylene and ethylene-octene copolymer in low-speed mixer A and mix for 2 minutes, then put them in twin-screw extruder A to extrude and granulate, and control the barrel of twin-screw extruder A The temperature is 150°C, the temperature in the second zone is 180°C, the temperature in the third zone is 190°C, the die temperature ...

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Abstract

The inventing discloses a special material for high-impact-strength polypropylene and a preparation method thereof. The special material is prepared from polypropylene, ultra-fine silicon dioxide, ethylene-octylene copolymer, liquid ethylene propylene terpolymer and an anti-oxidization agent in a certain proportion. The preparation method includes the steps that firstly, the raw materials are weighed according to the ratio; secondly, ultra-fine silicon dioxide and liquid ethylene propylene terpolymer are placed in a high-speed mixing machine to be evenly mixed, and modified core-shell structure particles are obtained; thirdly, polypropylene and ethylene-octylene copolymer are firstly placed in a low-speed mixing machine A to be evenly mixed and then placed in a double-screw extruder A to be extruded and granulated, and polypropylene subjected to toughening modification through elastomers is obtained; fourthly, the core-shell structure particles, the polypropylene subjected to toughening modification through the elastomers and the anti-oxidization agent are firstly placed in a low-speed mixing machine B to be evenly mixed and then placed in a double-screw extruder B to be extruded and granulated, and the special material for high-impact-strength polypropylene is obtained. The special material has excellent impact strength, the preparation method of the special material is simple in technological process, and production cost is low.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, and more specifically relates to a high-impact polypropylene special material and a preparation method thereof. Background technique [0002] Polypropylene is widely used in daily life and industrial production because of its simple synthesis process, low price, excellent comprehensive performance, and easy processing and molding. However, polypropylene has the disadvantage of poor impact resistance, especially low temperature impact resistance. In order to further expand the application range of polypropylene and prolong the service life of its products, it is particularly important to carry out toughening modification on polypropylene. [0003] Due to the high elasticity of the elastomer and the glass transition temperature far lower than room temperature, the elastomer-toughened modified polypropylene can significantly improve the low-temperature brittleness of polypropyle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08L23/16C08K3/36B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08L23/12C08L2205/03C08L23/0815C08L23/16C08K3/36
Inventor 刘海龚春丽文胜郑根稳李伟覃彩芹龚华
Owner HUBEI ENG UNIV
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