High-impregnation-degree long glass fiber reinforced polypropylene composite material and preparation method thereof

A technology of composite material and impregnation degree, which is applied in the field of long glass fiber reinforced polypropylene composite material with high impregnation degree and its preparation, can solve the problems of reducing the interaction force and not improving the impregnation degree of glass fiber, so as to increase energy consumption and impact The effect of increasing strength

Active Publication Date: 2021-09-24
QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned patents mainly use the anti-floating fiber agent to reduce the interaction force between the mold surface and the melt to reduce the floating fiber phenomenon on the surface of the part as much as possible, and do not improve the impregnation degree of the glass fiber in the material, and cannot fundamentally solve the problem of glass on the surface of the part. Fiber Agglomeration Defect

Method used

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  • High-impregnation-degree long glass fiber reinforced polypropylene composite material and preparation method thereof
  • High-impregnation-degree long glass fiber reinforced polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) The continuous glass fiber passes through the glass fiber heating and pre-dispersing device and the cooling device on the drawing line, then passes through the silk friction and electrification, and finally passes through the static electricity generating device, and then enters the impregnation tank with polypropylene melt. The electrostatic generating device is composed of two parts, the first part is composed of electrostatic electret electrostatic generator, high voltage wire, bracket, insulating support, molybdenum wire parts; the second part is composed of heating device;

[0024] 2) Weigh 63.2 parts of raw material polypropylene resin (Yangzi Petrochemical XPJ-3100H, melting value 100g / 10min, 2.16kg, 230°C) according to the weight ratio, and dry in an oven; add 5 parts of maleic anhydride grafted poly Propylene, 3 parts of maleic anhydride grafted EPDM, 0.2 part of hindered phenol antioxidant 1010, 0.1 part of phosphite antioxidant 168, and 0.5 part of pentaery...

Embodiment 2

[0027] 1) The continuous glass fiber passes through the glass fiber heating and pre-dispersing device and the cooling device on the drawing line, then passes through the silk friction and electrification, and finally passes through the static electricity generating device, and then enters the impregnation tank with polypropylene melt. The electrostatic generating device is composed of two parts, the first part is composed of electrostatic electret electrostatic generator, high voltage wire, bracket, insulating support, molybdenum wire parts; the second part is composed of heating device;

[0028] 2) Weigh 53.2 parts of raw material polypropylene resin (Yangzi Petrochemical XPJ-3100H, melting value 100g / 10min, 2.16kg, 230°C) according to the weight ratio, and dry in an oven; add 4 parts of maleic anhydride grafted poly Propylene, 3 parts of maleic anhydride grafted POE, 0.2 part of hindered phenol antioxidant 1010, 0.1 part of phosphite antioxidant 168, and 0.5 part of glyceryl ...

Embodiment 3

[0031] 1) The continuous glass fiber passes through the glass fiber heating and pre-dispersing device and the cooling device on the drawing line, then passes through the silk friction and electrification, and finally passes through the static electricity generating device, and then enters the impregnation tank with polypropylene melt. The electrostatic generating device is composed of two parts, the first part is composed of electrostatic electret electrostatic generator, high voltage wire, bracket, insulating support, molybdenum wire parts; the second part is composed of heating device;

[0032] 2) Weigh 43.2 parts of raw material polypropylene resin (Yangzi Petrochemical XPJ-3100H, melting value 100g / 10min, 2.16kg, 230°C) according to the weight ratio, and dry in an oven; add 3 parts of maleic anhydride grafted poly Propylene, 3 parts of maleic anhydride grafted SEBS, 0.3 part of antioxidant GA80, and 0.3 part of erucamide are stirred and mixed evenly in a high-speed machine,...

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Abstract

The invention discloses a high-impregnation-degree long glass fiber reinforced polypropylene composite material and a preparation method thereof. The high-impregnation-degree long glass fiber reinforced polypropylene composite material is prepared from the following raw materials in parts by weight: 43.2 to 63.2 parts of polypropylene resin, 30 to 50 parts of glass fibers, 1 to 10 parts of a compatilizer, 1 to 10 parts of a flexibilizer, 0.1 to 1 part of an antioxidant and 0.2 to 2 parts of a lubricant. The glass fibers pass through a glass fiber heating pre-dispersing device and a cooling device on line, then are electrified through friction of silk, and finally pass through a static electricity generating device to directly enter a dipping tank for production. The high-impregnation-degree long glass fiber reinforced polypropylene composite material disclosed by the invention has the following technical effects that each glass fiber is wrapped by the polypropylene resin, so that the glass fibers are prevented from being damaged in a pellet plasticizing process, the length of the glass fibers in a product is reserved, and the tensile strength, flexural modulus, impact strength and other properties are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high impregnation degree long glass fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene resin is a general-purpose plastic with a wide range of applications. It is one of the lowest-density varieties among all plastics. It has the advantages of good formability and chemical resistance. However, polypropylene resin has a large shrinkage rate and it is difficult to meet the requirements for size. It has high requirements for parts, and its mechanical properties are not as good as engineering plastics, so it cannot be used as a structural part. Glass fiber has many excellent properties such as high mechanical strength, good heat resistance and strong corrosion resistance, and is widely used in electronic equipment, building materials, sports equipment, aircraft and automobiles and oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/08C08L23/12C08L51/06C08L51/04C08L51/00C08K9/00C08K7/14B29B9/06
CPCC08J5/08B29B9/06C08J2323/12C08J2451/06C08J2451/04C08J2451/00C08K9/00C08K7/14
Inventor 柯俊沐陈登龙郭振雄吴健健陈明鹏刘志鹏
Owner QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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