Transparent polypropylene with high fluidity and high heat resistance and preparation method thereof

A transparent polypropylene, high heat-resistant technology, applied in the field of modified plastics, can solve the gaps in transparency, mechanical properties, heat resistance, restrictions on the promotion and use of transparent polypropylene materials, rigidity, insufficient heat resistance, etc., to achieve improved Transparency, broaden the scope of use, and good versatility

Inactive Publication Date: 2015-07-22
TIANJIN KINGFA NEW MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, limited by the synthesis process and the molecular chain structure of the material, there is still a certain gap in transparency, mechanical properties, and heat resistance, especially in the field of small household appliances such as electric irons, kitchen appliances, and electric fans. In terms of heat resistance, the use requirements are high, and ordinary transparent polypropylene materials are difficult to meet the requirements, thus limiting the promotion and use of transparent polypropylene materials
[0003] Chinese patent CN201080053441 discloses a heterogeneous polypropylene product that synthesizes a balance between rigidity and transparency. It mainly polymerizes monomers with different structures in the ring pipe process, and directly polymerizes to pr

Method used

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  • Transparent polypropylene with high fluidity and high heat resistance and preparation method thereof
  • Transparent polypropylene with high fluidity and high heat resistance and preparation method thereof
  • Transparent polypropylene with high fluidity and high heat resistance and preparation method thereof

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Embodiment 1-4

[0020] A high flow, high rigidity, high heat-resistant transparent polypropylene composite material, the proportioning ratio of its components is as shown in table 1, and the nucleating agent is selected from sorbitol, and its preparation method comprises the following steps:

[0021] Weigh each component according to the above weight percentage, mix each component evenly and feed it from the main feeding port of the extruder, and each component is melted, extruded, and granulated in the extruder for 3-10 minutes to obtain High-flow, high-rigidity, high-heat-resistant transparent polypropylene composite material product, the granules prepared according to the ratio of each embodiment were injection molded into mechanical specimens for testing, and the test results are shown in Table 2.

[0022] In Table 1, the flexural modulus of high crystalline homopolypropylene is >1500MPa; the melt flow rate of propylene-ethylene random copolymer polypropylene is 25g / min when the load is 2....

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Abstract

The invention provides transparent polypropylene with high fluidity and high heat resistance and a preparation method thereof. The transparent polypropylene comprises the following components in percentage by weight: 30-70% of random copolymerization polypropylene, 23-70% of homopolymerization polypropylene, 0-5% of ethylene-octylene copolymer, 0.1-2% of a nucleating agent, 0.1-2% of an additive and 0.1-2% of a processing agent. The transparent polypropylene compound material with high fluidity, high rigidity and high heat resistance, disclosed by the invention, utilizes the advantages of high rigidity and high heat resistance of homopolymerization polypropylene, and the heat resistant temperature and the rigidity of random copolymerization polypropylene are improved; through different fluid polypropylene compounding, a wide fluidity range is achieved, so that the transparent polypropylene can meet different customer requirements; a transparent toughening agent can be added, so that the purpose of improving the low-temperature toughness is achieved; through the compounding of homopolymerization polypropylene and random polypropylene, and the adding of the nucleating agent, the particle diameter of spherocrystal is shortened, the transparency is improved, the compatibility is good, no current ripple exists on the surface, and the lustrousness is high.

Description

technical field [0001] The invention belongs to the field of modified plastics, and in particular relates to a high-flow, high-heat-resistant transparent polypropylene and a preparation method thereof. Background technique [0002] Compared with PMMA, PC, transparent ABS and other thermoplastic transparent plastic materials, transparent polypropylene has obvious cost advantages, and complies with food and drug hygiene regulations, and has been widely used in household appliances, tableware, medical equipment, daily necessities and other fields. However, limited by the synthesis process and the molecular chain structure of the material, there is still a certain gap in transparency, mechanical properties, and heat resistance, especially in the field of small household appliances such as electric irons, kitchen appliances, and electric fans. In terms of heat resistance, the use requirements are relatively high, and ordinary transparent polypropylene materials are difficult to m...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/12C08L23/08
CPCC08L23/12C08L23/14C08L2201/08C08L2205/02C08L2205/03
Inventor 李聪刘乐文杨超峰杨纯儿王爱东杨霄云肖鹏陶四平
Owner TIANJIN KINGFA NEW MATERIAL
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