Filling modified PP material and preparation method thereof

A modification and main ingredient technology, applied in the field of filling modified PP materials and its preparation, can solve problems such as poor linearity, warping of parts, low shrinkage, etc., and achieve the effect of improving distribution uniformity and eliminating orientation

Pending Publication Date: 2021-05-28
珠海格力新材料有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of severe warpage and poor linearity of the parts when glass fiber filling is used to improve the shrinkage of PP in the above-mentioned prior art, and to provide a filled modified PP material and a preparation method thereof, which can obtain low Filled PP material with low shrinkage and warpage

Method used

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  • Filling modified PP material and preparation method thereof
  • Filling modified PP material and preparation method thereof
  • Filling modified PP material and preparation method thereof

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Embodiment approach

[0046] In one embodiment of the present invention, the diameter of the glass fiber in the composite glass fiber is 1-20 μm, and the length is 1-10 mm. It is preferable to use glass fibers with a diameter of 5-15 μm and a length of 5-10 mm.

[0047] In the filled modified PP material of the present invention, the processing aid includes one or a mixture of antioxidants and lubricants.

[0048] In one embodiment of the present invention, the filled modified PP material of the present invention further includes 0.01-3 parts of a compatibilizer.

[0049] The preparation method of the filled modified PP material described in this embodiment comprises the following steps:

[0050] Mixing step: adding PP resin, talc powder and processing aids into a high-speed mixer and mixing to obtain a mixed material;

[0051] Feeding step: first put the compound into the solid main material port of the extruder, and then put the composite glass fiber into the side feeding port of the extruder t...

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Abstract

The invention discloses a filling modified PP material which comprises the following components in parts by weight: 30-70 parts of PP resin, 10-20 parts of talcum powder, 40-50 parts of composite glass fibers and 0.1-1 part of a processing aid. The invention also discloses a preparation method of the filling modified PP material. Compared with the prior art, PP is filled with the modified composite glass fibers, the modified composite glass fibers can improve the distribution uniformity of the glass fibers in PP resin and eliminate the orientation of the fibers in the resin, uniform dispersion of the base material and the glass fibers is finally achieved, the shrinkage rate of a workpiece is reduced, and meanwhile the problem of warping of the workpiece is solved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a filled modified PP material and a preparation method thereof. Background technique [0002] PP (polypropylene) is one of the most widely used materials in general-purpose plastics. It has the advantages of low density, heat resistance, electrical insulation, high-strength mechanical properties and high wear-resistant processing performance. But at the same time, it has disadvantages such as poor low-temperature impact performance, easy aging, and large molding shrinkage. PP is widely used in household appliances, electronic appliances, construction and other industries. With the demand for lightweight and cost reduction, it is the general trend to replace engineering plastics with PP. At present, the mechanical properties of the products can meet the requirements of the products. However, when the injection molded parts are large or have complex structures, their lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L51/06C08K9/04C08K7/14C08K3/34
CPCC08L23/12C08L23/14
Inventor 王琳丁龙龙李森刘磊张从武杨伟业
Owner 珠海格力新材料有限公司
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