A kind of high welding strength long glass fiber reinforced polypropylene material and preparation method thereof

A technology of long glass fiber and polypropylene materials, which is applied in the field of high welding strength long glass fiber reinforced polypropylene materials and its preparation, can solve the problems of low odor and low VOC, and achieve improved bonding fastness, good interface fusion, high efficiency effect

Active Publication Date: 2022-05-20
NANJING JULONG SCI&TECH CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above technical problems, the material of the present invention adopts a scientific formula design, while ensuring that the glass fiber retains a sufficient length, the dispersion efficiency of the glass fiber is higher, and the problem of product floating fiber and long glass fiber stacking is solved, so that the parts forming process High welding strength has been obtained in the process, which has greatly improved the performance of existing materials, and also has the characteristics of low odor and low VOC

Method used

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  • A kind of high welding strength long glass fiber reinforced polypropylene material and preparation method thereof
  • A kind of high welding strength long glass fiber reinforced polypropylene material and preparation method thereof
  • A kind of high welding strength long glass fiber reinforced polypropylene material and preparation method thereof

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Embodiment

[0032] A preparation method of high welding strength long glass fiber reinforced polypropylene material, comprising the following steps:

[0033] Step 1: Fully mix 40-70 parts of polypropylene, 0.5-4 parts of hyperdispersant, 0.5-3 parts of dispersing synergist, 1-5 parts of compatibilizer, and 0.5-2 parts of other additives.

[0034] Step 2: Put the above mixture into the twin-screw extruder, pump 1-4 parts of the deodorant into the screw extruder through the side feeding port with a liquid pump, and draw it out through the vacuum port; mix the obtained The melt is extruded into the impregnation mold connected to the head of the twin-screw extruder, and then 20-60 parts of long glass fibers are passed through the impregnation mold, so that the long glass fibers are fully impregnated by the melt, and finally cooled, drawn, and pelletized, that is The long glass fiber reinforced polypropylene material with high welding strength is obtained, and the fiber retention length in the...

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Abstract

The invention relates to a long glass fiber reinforced polypropylene material and a preparation method thereof, in particular to a high welding strength long glass fiber reinforced polypropylene material and a preparation method thereof. The material of the present invention comprises the following components in parts by weight: 40-70 parts of polypropylene, 20-60 parts of glass fibers, 0.5-4 parts of hyperdispersant, 0.5-3 parts of dispersion synergist, and 1-5 parts of compatibilizer 1-4 parts of deodorant, 0.5-2 parts of other additives. The invention not only guarantees sufficient length of glass fibers in long glass fiber reinforced polypropylene, but also has higher dispersion efficiency of glass fibers, solves the problem of product floating fibers and long glass fibers stacking, and enables high welding strength to be obtained during the forming process of parts, excellent It is airtight, and also has the characteristics of low odor and low VOC, which meets the environmental protection and emission requirements of OEMs. In addition, the invention has high cost performance and is easy to be industrialized.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a long glass fiber reinforced polypropylene material with high welding strength and a preparation method thereof. Background technique [0002] With the development of automobile lightweight trend, replacing steel with plastic has become one of the hot research directions of automobile air conditioner. Among them, long glass fiber reinforced polypropylene materials are widely used in automobiles, electric tools and other fields because of their excellent mechanical strength, heat resistance, and dimensional stability. However, when used for parts welding, due to the length of glass fibers in the material is too long, it is difficult to disperse, the stacking of fibers is serious, and the problem of floating fibers, resulting in insufficient welding seam strength of parts during welding, and air or water pressure blasting is unqualified , easy to fall off. Moreover, wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08K7/14C08J5/04
CPCC08J5/043C08J2323/14C08J2323/12C08J2423/12
Inventor 王滨余木火刘曙阳蒋顶军
Owner NANJING JULONG SCI&TECH CO LTD
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