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Transparent polypropylene and preparation method thereof

A technology of transparent polypropylene and copolymerized polypropylene, applied in the field of transparent polypropylene resin, can solve the problems of not having controllable rheology, changing material flow characteristics, low impact strength, etc., achieving excellent toughness, improving apparent performance, transparency Good results

Inactive Publication Date: 2017-03-08
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are few toughened transparent polypropylene resin products at home and abroad, such as R370Y of South Korea SK Company and M800E and M1600E developed by Shanghai Petrochemical, but they all have the weakness of low impact strength, and most of the transparent polypropylene products at home and abroad The melt flow rate is controlled by hydrogen adjustment, not by adjusting the amount of peroxide in the granulation process. It cannot flexibly change the flow characteristics of the material quickly according to the needs of users, so it does not have a controllable flow rate. changing characteristics
At present, there are no relevant reports on high-flow and high-impact transparent polypropylene resin materials in China

Method used

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  • Transparent polypropylene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Put 100 parts by mass of homopolypropylene and 0.65 parts by mass of di-tert-butyl peroxide in a high-speed mixer and stir evenly, and use a twin-screw extruder (TE35 type, Nanjing Keya Technology Development Co., Ltd.) Extrude and granulate at a temperature of ℃ to form a peroxide masterbatch for later use. With 100 parts by mass of random copolymerized polypropylene, 0.10 parts by mass of phenolic antioxidant β-(4-hydroxyl-3,5-di-tert-butylphenyl) n-octadecyl propionate, 0.10 parts by mass Tris (2.4-di-tert-butylphenyl) phosphite, 0.10 parts by mass of halogen absorbent, 0.1 parts by mass of sorbitol nucleating agent (trade name: Millad3988, produced by U.S. Milliken Corporation) and 5 parts by mass of Ethylene-α-octene copolymerized elastomer (Engage 8130, produced by Dow Chemical, USA) was placed in a high-speed mixer and stirred evenly to obtain a base material for later use. Place the obtained base material and peroxide masterbatch respectively in the main materi...

Embodiment 2

[0022] It is basically the same as Example 1, but with the following changes: the amount of Engage 8130 added is changed to 10 parts. The obtained transparent polypropylene composition is denoted as CPO-2.

Embodiment 3

[0024] It is basically the same as in Example 1, but with the following changes: the addition of Millad 3988 is changed to 0.3 parts by mass, and the feeding mass rate ratio of the main and auxiliary feeders is changed to 100:5. The resulting transparent polypropylene composition is designated CPO-3.

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Abstract

The invention relates to a transparent polypropylene and a preparation method thereof. The transparent polypropylene is prepared from the following raw materials by weight: 100 parts of co-polypropylene, 0.2 to 0.3 part of an anti-oxidant, 0.1 to 0.2 part of a halogen absorbent, 0.1 to 0.3 part of a nucleating agent, 5 to 15 parts of a toughening agent and 1 to 10 parts of a peroxide master batch. The preparation method comprises the following steps: with the co-polypropylene, the anti-oxidant, the halogen absorbent, the nucleating agent and the toughening agent as main materials, adding the main materials into a main material feeding hopper of a double-screw extruder; with the peroxide master batch as an accessory material, adding the accessory material into an accessory material feeding hopper of the double-screw extruder; and subjecting all the raw materials to extrusion and granulation by the double-screw extruder so as to obtain the transparent polypropylene. The transparent polypropylene has excellent toughness and shock resistance; different processing characteristics can be obtained by flexibly adjusting the melt flow rate of the materials; so the transparent polypropylene is applicable to production of injection molded products with different wall thickness.

Description

technical field [0001] The present invention relates to a transparent polypropylene resin, in particular to a transparent polypropylene resin that can be widely used in food containers, injection molding of thin-walled and large or complex parts, and medical equipment. Background technique [0002] In recent years, with the continuous deepening of reform and opening up and the improvement of people's material and cultural living standards, the demand for high-transparency polypropylene special materials in the domestic market is growing rapidly. Controlled rheology toughened transparent polypropylene resin has outstanding transparency and high toughness. Compared with the low price of PS and PC, it is being favored by more and more manufacturing companies, and is widely used in food containers, thin Wall and large or complex parts injection molding production. With the further improvement of its comprehensive performance, its use space is also expanding, and it has increasi...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/12C08L23/08C08K5/14C08K5/134C08K5/526C08K5/098C08K5/053C08K5/523C08J3/22B29B9/06B29C47/92B29C48/92
CPCC08L23/14B29B9/06B29C48/92B29C2948/9258B29C2948/92704C08J3/226C08J2323/14C08J2423/12C08K2201/014C08L2201/10C08L2205/03C08L2207/14C08L23/12C08L23/0815C08K5/14C08K5/1345C08K5/526C08K5/098C08K5/053C08K5/523
Inventor 徐振明魏峰傅勇
Owner SINOPEC YANGZI PETROCHEM
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