Ultralow-warpage high-strength long glass fiber reinforced polypropylene composite material and preparation method thereof

A composite material and polypropylene technology, which is applied in the field of long glass fiber reinforced polypropylene composite material and its preparation, can solve the problems of reducing the strength of the material, and achieve the effects of improving the strength, being easy to form and processing, and enhancing the bonding strength.

Pending Publication Date: 2020-03-06
绍兴纳岩材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the material strength decreases when modifying the warpage performance of polypropylene composite materials in the prior art, the present invention provides an

Method used

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  • Ultralow-warpage high-strength long glass fiber reinforced polypropylene composite material and preparation method thereof
  • Ultralow-warpage high-strength long glass fiber reinforced polypropylene composite material and preparation method thereof
  • Ultralow-warpage high-strength long glass fiber reinforced polypropylene composite material and preparation method thereof

Examples

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preparation example Construction

[0035] The present invention also provides a preparation method of long glass fiber reinforced polypropylene composite material, comprising:

[0036] 20wt%-65wt% polypropylene; 5wt%-20wt% cyclic polyolefin; 2wt%-7wt% amorphous polyolefin; 0.2wt%-1wt% antioxidant; 0.1wt%-0.5wt% lubricant; 1wt% to 3wt% compatibilizer; 0.5wt% to 1.5wt% black masterbatch mixed to obtain a mixed material;

[0037] The mixed material is prepared by a melting method to obtain a long glass fiber reinforced polypropylene composite material.

[0038] Specifically: melt extrusion after mixing polypropylene, cyclic polyolefin, amorphous polyolefin APAO, antioxidant, lubricant, compatibilizer and black masterbatch to obtain a melt; extrude the melt into In the impregnation mold, the long glass fiber is impregnated with the melt through the impregnation mold, cooled and pelletized to obtain the long glass fiber reinforced polypropylene composite material.

[0039]In the following process of preparing long...

Embodiment 1～3

[0042] A long glass fiber reinforced polypropylene composite material with ultra-low warpage and high strength, its raw material formula is as shown in table 1, wherein the long glass fiber treatment agent is a glycidyl methacrylate type graft, and its preparation method includes the following step:

[0043] Mix materials other than glass fibers and then melt and extrude to obtain a melt; then extrude the melt into an impregnation mold, impregnate long glass fibers with the melt through the impregnation mold, cool and granulate Finally, an ultra-low warpage and high-strength long glass fiber reinforced polypropylene composite material is obtained.

[0044] The raw material formula (by mass percentage) of the long glass fiber reinforced polypropylene material of table 1 embodiment and comparative example

[0045]

[0046] Polypropylene BJ356AI is a product of Borouge; antioxidant 1010 and 168 are products of BASF; compatibilizer 363ZV-HM4 is a product of Polymer Asia; compa...

Embodiment 4～9

[0069] A long glass fiber reinforced polypropylene composite material with ultra-low warpage and high strength, its raw material formula is as shown in table 3, wherein the long glass fiber treatment agent is a glycidyl methacrylate type graft, and its preparation method includes the following step:

[0070] Mix materials other than glass fibers and then melt and extrude to obtain a melt; then extrude the melt into an impregnation mold, impregnate long glass fibers with the melt through the impregnation mold, cool and granulate Finally, an ultra-low warpage and high-strength long glass fiber reinforced polypropylene composite material is obtained.

[0071] The raw material formula (by mass percentage) of the long glass fiber reinforced polypropylene material in table 3 embodiment 4~9

[0072]

[0073] In table 3, described antioxidant can also be selected from one or more in aromatic amine antioxidant, hindered phenolic antioxidant and phosphite antioxidant; Described lubr...

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Abstract

The invention provides an ultralow-warpage high-strength long glass fiber reinforced polypropylene composite material and a preparation method thereof. The long glass fiber reinforced polypropylene composite material comprises the components by the weight percentage: 20 wt%-65 wt% of polypropylene, 20 wt%-60 wt% of long glass fibers, 5 wt% to 20 wt% of a cyclic polyolefin, 2 wt%-7 wt% of an amorphous polyolefin APAO, 0.2 wt% to 1 wt% of an antioxidant, 0.1 wt% to 0.5 wt% of a lubricant, 1 wt%-3 wt% of a compatilizer, and 0.5 wt%-1.5 wt% of a black master batch. Cyclic polyolefin and amorphouspolyolefin APAO are matched for use, the dosage of each component is controlled, and the long glass fiber reinforced polypropylene composite material is modified by using the compatilizer with high grafting rate, so that the warping problem caused by anisotropy of glass fiber orientation and polypropylene shrinkage can be remarkably reduced, and the strength of the material can be effectively improved. The composite material is easy to form and process, and can be used for manufacturing large-size thin-wall workpieces which are easy to warp, such as instrument board frameworks, rear tail doorsand the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an ultra-low warpage and high-strength long glass fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is a semi-crystalline thermoplastic with good physical and mechanical properties, chemical properties and processing properties. Therefore, polypropylene is widely used in construction materials, power tools, automobiles and household appliances. All have a wide range of uses. In order to get a wider range of applications, polypropylene is usually modified, such as talcum powder filling, calcium carbonate filling, glass fiber reinforcement, etc. As a general engineering plastic, glass fiber reinforced polypropylene has high strength, high rigidity, high toughness, low density, creep resistance and excellent dynamic fatigue resistance. Glass fiber reinforced polypropylene is cost-effective,...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L45/00C08L23/02C08L51/06C08K7/14C08K9/04C08K5/134C08K5/526C08K13/06C08J5/08
CPCC08J5/08C08J2323/14C08J2445/00C08J2423/02C08K7/14C08K9/04C08K5/1345C08K5/526C08K13/06
Inventor 王峥任冬友
Owner 绍兴纳岩材料科技有限公司
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