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Micro-foamed multiphase fiber-reinforced polypropylene composite material and preparation method thereof

A fiber reinforced and composite material technology, applied in the field of micro-foamed multiphase fiber reinforced polypropylene composite material and its preparation, can solve the problems of difficult to achieve chain scission degradation, refractory degradation, etc., and achieve good mechanical property retention rate, structure The effect of dense distribution and high foaming rate

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

[0003] There are two reasons for the refractory properties of polymer-based composites. One is that the molecular chains are formed by relatively strong chemical bonds between monomers, and the complex and high-degree long molecular chains are intertwined. It is difficult for polymers to achieve a high degree of chain scission degradation; the second is the refractory degradation of fillers and reinforcements used in composite materials. Currently commonly used inorganic filler reinforcements such as talcum powder and glass fiber are chemically resistant. Extremely strong substances, difficult to achieve degradation by biological and chemical means

Method used

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  • Micro-foamed multiphase fiber-reinforced polypropylene composite material and preparation method thereof
  • Micro-foamed multiphase fiber-reinforced polypropylene composite material and preparation method thereof
  • Micro-foamed multiphase fiber-reinforced polypropylene composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] 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 150 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, 170°C, 180°C, 190°C, 190°C, 190°C, and the product is obtained after melt extrusion, cooling, granulation, drying and other processes.

[0040] Table 1 Formula table of highly degradable microfoamed heterogeneous fiber-reinforced polypropylene composites (unit: g)

[0041]

Embodiment 2

[0043] 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 150 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, 170°C, 180°C, 190°C, 190°C, 190°C, and the product is obtained after melt extrusion, cooling, granulation, drying and other processes.

Embodiment 3

[0045] 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 150 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, 170°C, 180°C, 190°C, 190°C, 190°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-degradability micro-foamed multiphase fiber-reinforced polypropylene composite material which is composed of the following raw materials in percentage by weight: 30-70% of propylene copolymer, 2-8% of graft compatilizer, 5-15% of lignin, 3-20% of natural bamboo fiber, 5-20% of glass fiber chopped felt and 2-10% of elastomer toughener. The micro-foamed multiphase fiber-reinforced polypropylene composite material obtained according to the technical scheme has the advantages of low density, favorable foaming property, favorable mechanical properties, high degradability and the like. The lignin and natural fibrilia endow the reinforced polypropylene composite material with degradability. After the micro-foaming technique treatment, the composite material has lower density and higher degradability. Compared with the common talcum powder filled polypropylene composite material, on the premise of equivalent mechanical properties, the density of the reinforced polypropylene composite material is lowered by 15-25%, and the degradability can be obviously improved. The degradation rate of higher than 50% can be implemented by a simple landfilling-biodegradation process. The composite material has excellent characteristics of greenness and environment friendliness.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a highly degradable microfoaming multiphase fiber-reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] As one of the most widely used general-purpose plastics in the automotive, electrical appliances, building materials and other industrial fields, polypropylene has been widely concerned and applied for its high performance, low density and low cost. With the continuous development of polymer material science in recent years, there are more and more varieties of polymer materials. Driven by the macro application trend of "replacing steel with plastic and wood with plastic", its application is also increasing year by year. . However, due to the refractory nature of conventional polymers, their extensive use has brought heavy environmental pressure. The white pollution of plastic lunch boxes is the most t...

Claims

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Application Information

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IPC IPC(8): C08L53/00C08L51/06C08L97/00C08L97/02C08L23/08C08L23/16C08K7/14C08J9/30
CPCC08J9/30C08J2203/06C08J2353/00C08K2201/003C08K2201/004C08L53/00C08L2201/06C08L2203/14C08L2205/025C08L2205/035C08L2205/16C08L51/06C08L97/005C08L97/02C08L23/0815C08K7/14
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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