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High-rigidity oxidation-resistant polypropylene synergistically regulated and controlled by molecular sieve/phosphate sodium salt and preparation method thereof

A technology of sodium phosphate and polypropylene is applied in the fields of polypropylene composite material and its preparation, high-rigidity oxidation-resistant polypropylene and its preparation, which can solve problems such as high price and affect toughness, and achieve low production cost and high thermal and oxygen stability. The effect of improving the stability of thermo-oxidative

Inactive Publication Date: 2017-05-10
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem that the simple use of phosphate sodium salt nucleating agent is expensive and seriously affects the toughness while improving the rigidity of polypropylene; The oxidation start temperature of propylene improves the thermo-oxidative stability of polypropylene, making it possible to use high-rigid polypropylene in a wider range of fields

Method used

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  • High-rigidity oxidation-resistant polypropylene synergistically regulated and controlled by molecular sieve/phosphate sodium salt and preparation method thereof
  • High-rigidity oxidation-resistant polypropylene synergistically regulated and controlled by molecular sieve/phosphate sodium salt and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] The raw materials used are as follows: 100 parts of homopolypropylene with a melt flow rate of 0.5-20g / min (test conditions: 230°C, 2.16Kg); 0.04 parts of 13X molecular sieve with a particle size of 3-4 microns, Shanghai Jiuzhou Chemical Co., Ltd. Company; 0.16 parts of NA-40 nucleating agent, Shanghai Shengpan New Material Technology Co., Ltd.; 0.05 part of Irganox1010 antioxidant, BASF Company; 0.05 part of Irgafos168 auxiliary antioxidant, BASF Company; 0.05 part of calcium stearate.

[0040] First, mix the resin and various additives in a high-speed mixer for 5-10 minutes, and then carry out melt extrusion and granulation in a twin-screw extruder at 220°C. The polypropylene particles granulated according to the above method were dried in a vacuum oven at 100° C. for 2 hours, and then the dried particles were injection-molded on an injection molding machine to prepare samples.

Embodiment 2

[0042] The amount of molecular sieve in Example 1 was changed to 0.1 part, and the amount of nucleating agent was changed to 0.1 part. All the other raw material consumptions are the same as in Example 1.

Embodiment 3

[0044] The antioxidant consumption in embodiment 1 is changed into 0. All the other raw material consumptions are the same as in Example 1.

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Abstract

The invention discloses high-rigidity oxidation-resistant polypropylene synergistically regulated and controlled by a molecular sieve / phosphate sodium salt and a preparation method thereof. The high-rigidity oxidation-resistant polypropylene is prepared from the following ingredients in parts by weight: 100 parts of polypropylene, 0.1 to 20 parts of powdery molecular sieves, 0.01 to 1.0 part of nucleating agents, 0.01 to 1.0 part of antioxidants and 0.1 to 5.0 parts of lubricating agents. The preparation method is one of a direct mixing preparation method, a pre-dispersing preparation method and a dipping-absorbing preparation method. A prepared high-rigidity oxidation-resistant polypropylene composite material uses the nucleating agent, so that the rigidity of the polypropylene is effectively improved; the toughness of the polypropylene is stabilized through the molecular sieve; meanwhile, the molecular sieve disperses the oxygen concentration of a polypropylene base body through the adsorption effect of pore passages on oxygen; is, so that the thermal oxidation stability of a polymer material is improved. The high-rigidity oxidation-resistant polypropylene can be widely applied to industries of automobiles, household appliances and the like.

Description

technical field [0001] The invention relates to a polypropylene composite material with good rigidity and thermal oxygen stability and a preparation method thereof, in particular to a high-rigidity oxidation-resistant polypropylene and a preparation method thereof which are synergistically regulated by molecular sieve / sodium phosphate ester, and belong to The field of polymer materials. Background technique [0002] As a semi-crystalline polymer, polypropylene has excellent properties such as good mechanical properties, light weight, heat resistance and easy processing and molding, and its raw material price is low. In recent years, its commercial value has been increasing, and it has been widely used in automobile manufacturing, Household appliances, daily necessities and packaging materials, etc., but due to the slow crystallization speed of polypropylene, long molding cycle, poor gloss and transparency of products, its application is greatly limited. However, the spherul...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K13/04C08K7/26C08K5/134C08K5/526C08K5/098
CPCC08K13/04C08K5/098C08K5/1345C08K5/526C08K7/26C08L2201/08C08L23/12
Inventor 辛忠孟鑫陈伟杰盛艳伍楚诗蒋泽文
Owner EAST CHINA UNIV OF SCI & TECH
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