Fiber reinforced type PP (polypropylene) material and preparation method thereof

A fiber-reinforced, glass fiber technology, applied in the field of fiber-reinforced PP materials and their preparation, can solve the problems of mechanical properties and hidden dangers of use, unbalanced shrinkage, and deterioration of material mechanical properties, and achieves high-efficiency ultraviolet shielding. ability, improve the interface bonding strength, improve the effect of aging resistance

Inactive Publication Date: 2019-12-20
安徽强茗塑业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the continuous long glass fiber used will be oriented along the flow direction, the shrinkage in the flow direction and the shrinkage perpendicular to the flow direction are very different, and the shrinkage imbalance causes warping
[0003] Reinforced PP material has good application in household appliances due to its good processing performance, tensile strength and high temperature resistance, such as used in air conditioner fan blades. Deformation has high requirements. If the deformation is large, t

Method used

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  • Fiber reinforced type PP (polypropylene) material and preparation method thereof
  • Fiber reinforced type PP (polypropylene) material and preparation method thereof

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preparation example Construction

[0045] A preparation method of fiber-reinforced PP material, comprising the steps of:

[0046] The first step is to weigh each raw material according to the parts by weight, and put the polypropylene and glass fiber into an 80°C blast drying oven to dry until the moisture content is less than 3%;

[0047] The second step is to mix the dried polypropylene, glass fiber and other raw materials evenly, and then extrude and granulate through twin-screw to obtain plastic granules; wherein, the extrusion temperature is 220-230°C, the feed rate is 40kg / h, and the screw Speed ​​350r / min;

[0048] The third step is to heat the plastic particles to a molten state, and control the temperature to 250-255°C, and preheat the mold to 40-50°C at the same time, inject the molten material into the preheated mold, hold the pressure for molding, and hold the pressure time 10s, the PP material is obtained;

[0049] During the molding process, the melting temperature is controlled at 250-255°C. Wh...

Embodiment 1

[0053] A fiber-reinforced PP material, made of the following raw materials in parts by weight: 65 parts of polypropylene, 26 parts of glass fiber, 4 parts of elastomer metallocene polyethylene, 0.8 parts of modified nano-titanium dioxide, 8 parts of modified conductive carbon black, 6 parts of compatibilizer, 0.5 part of plastic processing aid;

[0054] The PP material is made by the following steps:

[0055] The first step is to weigh each raw material according to the parts by weight, and put the polypropylene and glass fiber into an 80°C blast drying oven to dry until the moisture content is less than 3%;

[0056] The second step is to mix the dried polypropylene, glass fiber and other raw materials evenly, and then granulate through twin-screw extrusion to obtain plastic granules; wherein, the extrusion temperature is 220°C, the feeding amount is 40kg / h, and the screw speed is 350r / min;

[0057] The third step is to heat the plastic particles to a molten state, and cont...

Embodiment 2

[0059] A fiber-reinforced PP material, made of the following raw materials in parts by weight: 70 parts of polypropylene, 29 parts of glass fiber, 4.5 parts of elastomer metallocene polyethylene, 0.9 part of modified nano titanium dioxide, 9 parts of modified conductive carbon black, 6.5 parts of compatibilizer, 0.6 parts of plastic processing aid;

[0060] The PP material is made by the following steps:

[0061] The first step is to weigh each raw material according to the parts by weight, and put the polypropylene and glass fiber into an 80°C blast drying oven to dry until the moisture content is less than 3%;

[0062] The second step is to mix the dried polypropylene, glass fiber and other raw materials evenly, and then extrude and granulate through twin-screws to obtain plastic granules; wherein, the extrusion temperature is 225°C, the feed rate is 40kg / h, and the screw speed is 350r / min;

[0063] The third step is to heat the plastic particles to a molten state, and co...

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Abstract

The invention discloses a fiber reinforced type PP (polypropylene) material which is prepared from the following raw materials in parts by weight: 65-75 parts of polypropylene, 26-32 parts of glass fiber, 4-5 parts of elastomer metallocene polyethylene, 0.8-1 part of modified nano titanium dioxide, 8-10 parts of modified conductive carbon black, 6-7 parts of a compatibilizer and 0.5-0.7 part of aplastic processing aid. The invention further discloses a preparation method of the PP material. As polypropylene is adopted as a substrate of the PP material, and the elastomer metallocene polyethylene is adopted as a toughening agent, high tension strength of the composite material can be maintained while the impact strength of the composite material is improved by using the substances; as the modified nano titanium dioxide is adopted as an anti-aging agent, not only are a great amount of ultraviolet rays shielded, but also the aging resistance of the material can be improved, and in addition, PP crystallization can be promoted; and as the modified conductive carbon black is adopted as an anti-electrostatic agent, an anti-electrostatic function can be brought into play sufficiently, andthus dust adherence on the surface of a PP material product can be remarkably reduced.

Description

technical field [0001] The invention belongs to the field of PP composite materials, and in particular relates to a fiber-reinforced PP material and a preparation method thereof. Background technique [0002] PP is a semi-crystalline material, including homopolymer type and copolymer type. Both homopolymer type and copolymer type PP materials have excellent resistance to moisture absorption, acid and alkali corrosion resistance, and solubility resistance. The reinforced PP materials generally used at present, in order to ensure the high strength of the material, are reinforced with ordinary glass fibers. For example, the Chinese invention patent with the patent number CN201510047695.3 discloses a continuous long glass fiber-reinforced PP material against copper damage and its preparation Method, the PP material includes the following raw materials in parts by weight: polypropylene, continuous long glass fiber, compound type halogen-free flame retardant, anti-copper agent, co...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L61/06C08K13/06C08K9/04C08K7/14C08K3/22C08K3/04C08J5/04
CPCC08J5/043C08J2323/12C08J2423/06C08J2461/06C08K3/04C08K7/14C08K9/04C08K13/06C08K2003/2241C08K2201/001C08K2201/004C08K2201/011C08K2201/017
Inventor 朱峰朱楠楠
Owner 安徽强茗塑业科技有限公司
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