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High-performance glass fiber reinforced polypropylene composite material specially used for micro-foaming and preparation method thereof

A composite material, polypropylene technology, applied in the polymer field, can solve the problems of reduced density and performance, and achieve the effect of reduced bending strength, high cost performance, and uniform cells.

Active Publication Date: 2015-09-30
中广核俊尔(上海)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an improved high-performance micro-foaming special glass fiber reinforced polypropylene composite material, which can overcome some deficiencies in the prior art, such as density reduction and performance degradation

Method used

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  • High-performance glass fiber reinforced polypropylene composite material specially used for micro-foaming and preparation method thereof
  • High-performance glass fiber reinforced polypropylene composite material specially used for micro-foaming and preparation method thereof
  • High-performance glass fiber reinforced polypropylene composite material specially used for micro-foaming and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Weigh each component according to the data of Example 1 shown in Table 1, mix each component other than the glass fiber chopped strand mat evenly with the high-speed mixer, and put it into the main feeding bin of the twin-screw extruder, The glass fiber chopped strand mat is put into the side feeding bin, the screw diameter of the extruder is 35mm, the length-to-diameter ratio L / D is 40, the speed of the main engine is set at 250 rpm, and the temperature of each zone of the main barrel (from the feeding port to Head outlet) is set at 60°C, 160°C, 190°C, 195°C, 200°C, 210°C, 210°C, and the product is obtained after melt extrusion, cooling, granulation, drying and other processes.

[0032] Table 1 Formula table of glass fiber reinforced polypropylene composite material dedicated to high-performance micro-foaming (unit: gram)

[0033]

Embodiment 2

[0035] Weigh each component according to the data of Example 2 shown in Table 1, mix the components other than the glass fiber chopped strand mat evenly with the high-speed mixer, and put it into the main feeding bin of the twin-screw extruder. The glass fiber chopped strand mat is put into the side feeding bin, the screw diameter of the extruder is 35mm, the length-to-diameter ratio L / D is 40, the speed of the main engine is set at 250 rpm, and the temperature of each zone of the main barrel (from the feeding port to Head outlet) is set at 60°C, 160°C, 190°C, 195°C, 200°C, 210°C, 210°C, and the product is obtained after melt extrusion, cooling, granulation, drying and other processes.

Embodiment 3

[0037] Weigh each component according to the data of Example 3 shown in Table 3, mix each component other than the glass fiber chopped strand mat with a high-speed mixer, and put it into the main feeding bin of the twin-screw extruder. The glass fiber chopped strand mat is put into the side feeding bin, the screw diameter of the extruder is 35mm, the length-to-diameter ratio L / D is 40, the speed of the main engine is set at 250 rpm, and the temperature of each zone of the main barrel (from the feeding port to Head outlet) is set at 60°C, 160°C, 190°C, 195°C, 200°C, 210°C, 210°C, and the product is obtained after melt extrusion, cooling, granulation, drying and other processes.

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Abstract

The invention relates to a high-performance glass fiber reinforced polypropylene composite material specially used for micro-foaming. The composite material is characterized by comprising the following components in percentage by weight: 50-80% of composite polypropylene, 2-10% of a graft compatilizer, 5-30% of a chopped glass fiber mat and 2-10% of an elastomer flexibilizer, totaling 100%, wherein the composite polypropylene is formed by compounding high-rigidity homo polypropylene HCIPP and high melt strength polypropylene HMSPP, wherein a high-rigidity homo polypropylene HCIPP substrate is beneficial to the retention rate of the mechanical property of the composite material after foaming; the high melt strength polypropylene HMSPP can ensure cell uniformity, structure integrity and reasonable distribution; and the added multi-monomer-block copolymer is capable of improving the interface condition of the composite material. Therefore, after micro-foaming, the composite material is greatly reduced in density, is not greatly reduced in tensile strength and bending strength and is improved in impact strength. The composite material is a polymer-based composite material having outstanding advantages of light weight, high strength and high cost performance.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a high-performance micro-foaming special glass fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene is one of the most widely used general-purpose plastics. Compared with polyethylene of the same type, polypropylene not only has a low density (0.9g / cm3), but its mechanical properties and heat resistance are significantly better than polyethylene, reflecting the extremely excellent "light weight, high performance , low-cost” application characteristics, so it can be widely used in industrial fields such as automobiles, electrical appliances, and building materials. [0003] Under the premise of the current lightweight trend of "replacing steel with plastic" in the automotive industry, polypropylene and its composite materials have become one of the ideal choices for lightweight composite materials, and mo...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L51/06C08L23/08C08L23/16C08K7/14C08J9/30
CPCC08J9/30C08J2203/06C08J2323/12C08J2323/14C08J2351/06C08K2201/003C08K2201/004C08L23/12C08L23/14C08L51/06C08L2203/14C08L2205/02C08L2205/025C08L2205/035C08L23/16C08K7/14C08L23/0815
Inventor 郑云龙黄志杰杨仓先
Owner 中广核俊尔(上海)新材料有限公司
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