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Hydrolysis-resistant continuous glass fiber strengthened polypropylene preimpregnation tape and preparation method thereof

A technology of continuous glass fiber and prepreg tape, which is applied in the field of continuous glass fiber reinforced thermoplastic composite materials, can solve the problems of easy occurrence of voids, affecting the service life of products, and decreasing the retention rate of mechanical properties of products, and achieves simple and operable process and water resistance. Excellent solution performance

Inactive Publication Date: 2019-01-08
JIANGSU QIYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the production process of continuous glass fiber reinforced polypropylene prepreg tape, PP melt needs to be wrapped with continuous glass fiber, and gaps are likely to appear at the contact interface between the melt and glass fiber. Movement destroys the inside of the resin and the bonding force between the resin and the glass fiber, resulting in a sharp decline in the retention rate of the mechanical properties of the product in the short term, seriously affecting the service life of the product, so it is necessary to improve its hydrolysis resistance

Method used

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  • Hydrolysis-resistant continuous glass fiber strengthened polypropylene preimpregnation tape and preparation method thereof
  • Hydrolysis-resistant continuous glass fiber strengthened polypropylene preimpregnation tape and preparation method thereof
  • Hydrolysis-resistant continuous glass fiber strengthened polypropylene preimpregnation tape and preparation method thereof

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Embodiment 1

[0027] A hydrolysis-resistant continuous glass fiber reinforced thermoplastic prepreg tape, its components are: PP resin 33%, maleic anhydride grafted polyolefin compatibilizer 3%, hindered phenolic main antioxidant 0.4% by mass percentage %, phosphite auxiliary antioxidant 0.2%, PS800 thioester heat resistant agent 0.4%, continuous glass fiber 63%.

[0028] As shown in 1, the steps of the preparation method of the present invention are:

[0029] 1. Fully mix the above-mentioned PP resin, compatibilizer, heat-resistant agent and antioxidant in a high-speed mixer according to a certain ratio.

[0030] 2. The above-mentioned mixed materials are sucked into the hopper of the single-screw extruder by the vacuum feeder, heated, melted by the extruder, and accurately metered and transported to the die head.

[0031] 3. A certain amount of glass fiber is released from the unwinding rack, and after pre-tensioning, carding, online sizing treatment, drying, and tensioning processes, th...

Embodiment 2

[0035] A hydrolysis-resistant continuous glass fiber reinforced thermoplastic prepreg tape, its components are: PP resin 31%, silane coupling agent 3.3%, hindered phenolic main antioxidant 0.3%, phosphite Auxiliary antioxidant 0.1%, PS802 thioester heat-resistant agent 0.3%, continuous glass fiber 65%.

[0036] Its preparation method is with embodiment 1.

Embodiment 3

[0038] A hydrolysis-resistant continuous glass fiber reinforced thermoplastic prepreg tape, its components are: PP resin 30%, titanate coupling agent 4%, hindered phenolic primary antioxidant 0.4%, phosphorous acid Ester auxiliary antioxidant 0.2%, DSTDP thioester heat resistant agent 0.4%, continuous glass fiber 65%.

[0039] Its preparation method is with embodiment 1.

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Abstract

The invention relates to a hydrolysis-resistant continuous glass fiber strengthened polypropylene preimpregnation tape and a preparation method thereof, and belongs to the field of continuous glass fiber strengthened thermoplastic composite. The hydrolysis-resistant continuous glass fiber strengthened thermoplastic polypropylene preimpregnation tape is characterized by comprising the following components in parts by mass: 20-40 parts of PP resin, 3-6 parts of a compatilizer, 55-75 parts of continuous glass fibers, 0.2-0.4 part of a main antioxidant, 0.1-0.2 part of an auxiliary antioxidant and0.1-0.4 part of a heat-resisting agent. The hydrolysis-resistant continuous glass fiber strengthened polypropylene preimpregnation tape disclosed by the invention is prepared in the following steps:coating molten mass to the glass fibers which are uniformly expanded through an extruder die head, enabling the molten mass to uniformly wrap the continuous glass fibers through heating multiple groups of interlaced parallel soaking rollers, then performing soaking, performing cooling, performing drawing, performing edge trimming and performing winding. After products are soaked in water for 168 h, the performance conservation rate reaches 70% or above; the technology is relatively simple and operable and is suitable for batch production.

Description

technical field [0001] The invention relates to the field of continuous glass fiber reinforced thermoplastic composite materials, in particular to a hydrolysis-resistant continuous glass fiber reinforced polypropylene prepreg tape and a preparation method thereof. technical background [0002] Continuous glass fiber reinforced polypropylene (PP) prepreg tape is made by impregnating continuous glass fiber in PP melt, cooling and shaping. Continuous glass fiber reinforced thermoplastic polypropylene prepreg tape due to the thermoplastic properties of PP resin, can be formed by hot pressing of prepreg tape and prepreg tape, prepreg tape and honeycomb or prepreg tape and plastic sheet The prepreg tape is wound on the pipe as a sandwich reinforcement layer by winding to enhance the pressure bearing capacity of the pipe. [0003] However, in the production process of continuous glass fiber reinforced polypropylene prepreg tape, PP melt needs to be wrapped with continuous glass fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L51/06C08K13/06C08K9/10C08K7/14C08K5/372B29B11/16
CPCB29B11/16C08L23/12C08L23/14C08L51/06C08K13/06C08K9/10C08K7/14C08K5/372
Inventor 朱华平邱谍葛鑫鑫
Owner JIANGSU QIYI TECH