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Polypropylene composition and polypropylene material and application thereof

A technology of polypropylene composition and polypropylene material, applied in the field of polypropylene material, application of polypropylene material, polypropylene composition, can solve problems such as defects in the performance of parts, reduced toughness, etc., to improve processing performance and improve molding Speed, the effect of improving compatibility

Active Publication Date: 2021-11-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used inorganic fillers include calcium carbonate, mica, wollastonite, etc. Adding fillers can effectively improve the shrinkage rate of the material and increase the service life of the material, but it also leads to a significant decrease in the toughness of the material, and the existence of phase separation of the two-phase material will give The performance of the parts brings serious defects. Therefore, how to prepare qualified selective laser sintering 3D printing filled polypropylene materials is the focus of material research

Method used

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  • Polypropylene composition and polypropylene material and application thereof
  • Polypropylene composition and polypropylene material and application thereof
  • Polypropylene composition and polypropylene material and application thereof

Examples

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preparation example Construction

[0023] During the preparation of the compatibilizer, the temperature of the melt blending reaction can be the conventional blending temperature used in POE processing, as long as the matrix resin can be completely melted without decomposing it. Preferably, the temperature of the melt blending reaction is 210-230°C.

[0024] In the present invention, the polypropylene may be a random copolymer polypropylene whose comonomer is ethylene. Preferably, the melt flow index of the polypropylene at 230°C under a load of 2.16kg is 20-40g / 10min. In addition, the polypropylene can be obtained commercially, for example, the grades are 7726 and 9020.

[0025] In the present invention, barium sulfate is used as the filler, and the barium sulfate has good thermal stability, dimensional stability and aging resistance, and the shrinkage rate of the product is low, and the coefficient of linear expansion is low. Barium sulfate can be technical grade products. The particle size of the barium s...

Embodiment 1

[0054] This example is used to illustrate the polypropylene composition and polypropylene material of the present invention.

[0055] Based on the total weight of the polypropylene composition, the composition of the polypropylene composition is as follows: 70 parts of polypropylene, 30 parts of barium sulfate, 5 parts of compatibilizer, 0.32 parts of antioxidant (weight ratio is 1: 1 antioxidant agent 1010 and antioxidant 168).

[0056] Based on the total weight of the compatibilizer, the compatibilizer is prepared by melt-blending reaction of 100 parts of POE, 3 parts of GMA and 15 parts of polyethylene glycol. Specifically, add POE, GMA and polyethylene glycol into a high-speed mixer, stir at room temperature for 3 minutes to mix the materials evenly, and inject the mixed materials into the reactive twin-screw extruder through a liquid metering pump, at 210-230 The compatibilizer was obtained by melt blending at a temperature of 300 rpm with a screw speed of 300 rpm, extru...

Embodiment 2～3

[0059] The method for preparing polypropylene material with reference to embodiment 1, difference is that the polypropylene in the polypropylene composition of embodiment 2 is 80 parts, barium sulfate is 20 parts, the polypropylene in the polypropylene composition of embodiment 3 90 parts for barium sulfate and 10 parts for barium sulfate.

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Abstract

The invention belongs to the technical field of polymer processing, and specifically provides a polypropylene composition, a polypropylene material and applications thereof. Based on the total weight of the polypropylene composition, the polypropylene composition comprises: 60-86% by weight of polypropylene, 8-30% by weight of barium sulfate, 3-10% by weight of compatibilizer, and 0.01-86% by weight of antioxidant 0.5% by weight; wherein, the compatibilizer is made by POE, glycidyl methacrylate and polyethylene glycol melt blending reaction, relative to the POE of 100 parts by weight, the consumption of glycidyl methacrylate is 1-5 parts by weight, and the amount of polyethylene glycol is 3-20 parts by weight. The polypropylene material of the present invention overcomes the disadvantages of polypropylene such as poor toughness and large molding shrinkage, is suitable for selective laser sintering 3D printing, and has low energy consumption for material preparation.

Description

technical field [0001] The invention belongs to the technical field of polymer processing, and in particular relates to a polypropylene composition, a polypropylene material prepared from the polypropylene composition, and an application of the polypropylene material. Background technique [0002] Selective Laser Sintering (SLS) technology is a rapid prototyping technology, which is currently the most widely used and most promising technology in plastic material manufacturing technology. As a key part of 3D printing technology, in recent years showing a trend of rapid development. SLS technology is a technology in which the computer first scans the three-dimensional entity, and then selectively melts and sinters the material powder pre-laid on the workbench or parts through high-intensity laser irradiation, and then realizes layer-by-layer molding. . SLS technology has a high degree of design flexibility, can manufacture accurate models and prototypes, can form parts with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/08C08L71/02C08K13/02C08K3/30C08K5/101C08K5/134C08K5/526
CPCC08K2003/3045C08L23/14C08L2205/02C08L2205/03C08L23/0815C08L71/02C08K13/02C08K3/30C08K5/101C08K5/1345C08K5/526
Inventor 邵静波张师军董穆白弈青初立秋邹浩尹华李杰吕明福徐耀辉权慧侴白舸
Owner CHINA PETROLEUM & CHEM CORP
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