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GMT plate and preparation method and application thereof

A sheet and composite material technology, applied in the field of GMT sheet and its preparation, can solve the problems of unfavorable lightweight development of GMT material, uniformity is not as uniform as wet process, high heating expansion height, etc., to achieve uniform bubble size, elasticity, The effect of distribution rules

Active Publication Date: 2021-08-24
运研材料科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the investment of wet process equipment is large and the process is complicated, but the uniformity of the plate is good, and the height of heating expansion is large; the equipment of dry process and fluidized field process is simple, the investment is small, but the uniformity of the plate produced is poor, and the height of heating expansion is small. Because the uniformity of glass fiber and PP mixing is not as uniform as that of wet process
[0003] In addition, the connection mode between glass fiber and PP in GMT material is point-to-point connection. However, this method not only increases the manufacturing cost, but also is not conducive to the development trend of lightweight GMT materials. As a result, the density of the prepared GMT plates is generally around 1000g / m2. Components (e.g. automotive interior parts) are also denser

Method used

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  • GMT plate and preparation method and application thereof
  • GMT plate and preparation method and application thereof
  • GMT plate and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The GMT plate components of the present embodiment are shown in Table 1, and the preparation method may further comprise the steps:

[0056] (1) 50 parts by weight of short glass fibers with a length of 6mm and 1.0 parts by weight of vinyltrimethoxysilane coupling agent (Hangzhou Jessica Chemical Co., Ltd., KH-171) are placed at a high speed of 3000r / min. Fully mix in the mixer, the mixing time is 30min;

[0057] (2) Add 0.15 parts by weight of polyepichlorohydrin-dimethylamine-polyamine surfactant (Shaoxing Shangyu Simo Institute of Organic Chemistry, 002) and 0.10 parts by weight to the mixed solution in step (1) successively Fatty alcohol polyoxyethylene ether dispersant (Shenyang Sainio Chemical Co., Ltd., Pingpingjia 0-25), stirred in a high-speed mixer with a rotating speed of 3000r / min for 20min;

[0058] (3) Add 50 parts by weight of PP powder with a melt index of 35 and 0.10 parts by weight of fatty alcohol polyoxyethylene ether dispersant (Shenyang Sainio Che...

Embodiment 2

[0081] The GMT plate components of the present embodiment are shown in Table 1, and the preparation method may further comprise the steps:

[0082] (1) The length of 45 parts by weight is glass fiber of 9mm, vinyltriethoxysilane coupling agent (Hangzhou Jessica Chemical Co., Ltd., KH-151) of 1.3 parts by weight, at a high speed of 3200r / min Fully mix in the mixer, the mixing time is 32min;

[0083] (2) add the stearyl dimethyl benzyl ammonium chloride surfactant of 0.10 weight part successively in step (1), the double fatty acid dispersant of 0.15 weight part (Fuyang Hengli Special New Material Technology Co., Ltd. , HLT-200) was stirred in a high-speed mixer with a rotating speed of 3000r / min for 20min;

[0084] (3) Adding 55 parts by weight of PP fibers with a length of 6mm, 0.10 parts by weight of ethylene oxide condensate dispersant (Nantong Runfeng Petrochemical Co., Ltd., IW100), 0.05 parts by weight of bismuth Alkyl alcohol polyoxyethylene ether surfactant (Jinan Guoc...

Embodiment 3

[0107] The GMT plate components of the present embodiment are shown in Table 1, and the preparation method may further comprise the steps:

[0108] (1) Weigh 40 parts by weight of glass fiber with a length of 12mm and 1.5 parts by weight of vinyltriethoxysilane coupling agent (Hangzhou Jessica Chemical Co., Ltd., KH-151), at a speed of 4000r / min Fully mix in a high-speed mixer. The silane coupling agent is used as a surface modification treatment of glass fiber to increase its hydrophilicity, which is beneficial to the subsequent mixing and molding with PP materials. The mixing time is 35 minutes;

[0109] (2) Add 0.10 parts by weight of isomeric C10 alcohol polyoxyethylene ether (Foshan Jinjia New Material Technology Co., Ltd., 1005) surfactant, 0.20 parts by weight of fatty alcohol and ethylene oxide successively in step (1) Condensate (Nantong Runfeng Petrochemical Co., Ltd., IW100) dispersant was stirred in a high-speed mixer with a rotating speed of 4000r / min for 22min; ...

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Abstract

The invention provides a GMT plate and a preparation method and application thereof. The GMT board is prepared from the following raw materials in parts by weight: 40 to 60 parts of short glass fiber, 40 to 60 parts of PP powder or PP fiber, 1 to 5 parts of expandable microspheres, 0.1 to 0.5 part of dispersing agent, 0.1 to 0.5 part of surfactant, 0.1 to 0.5 part of defoaming agent and 0.5 to 2 parts of silane coupling agent. According to the preparation method, the expandable microspheres are introduced into a GMT plate wet process, the whole process is simpler, operation is more flexible, and the preparation method is more suitable for continuous production. The GMT plate can be used for manufacturing automotive trim parts. After the expandable microspheres are foamed, the density of an automotive interior part manufactured by using the GMT plate can be obviously reduced, the thickness of the automotive interior part is improved, and the requirement for light weight of the GMT plate for an automobile can be met. Meanwhile, due to the synergistic effect of the expandable microspheres on the glass fibers and the PP material, various physical properties of the ultra-light automotive interior part are also improved to a certain extent, so that the product has the advantages of being environmentally friendly, non-toxic, light in weight, good in mechanical property, corrosion resistance and sound insulation.

Description

technical field [0001] The invention relates to a GMT plate, more specifically, to a GMT plate and its preparation method and application. Background technique [0002] Glass fiber reinforced thermoplastic composite material, referred to as GMT material, is a new type of material composed of glass fiber and thermoplastic PP material. It has light weight, environmental protection, sound absorption, heat insulation, high strength, good toughness, and excellent chemical resistance. Specific corrosion and environmental adaptability, widely used in transportation, construction, aviation fields. The modern automobile industry takes the reduction of body weight as the main development direction of energy saving and consumption reduction. Lightweight GMT material has gradually become the mainstream material for making auto parts (car roof, rear partition, guard plate, engine cover, trunk cover, gear case cover). At the same time, development trends such as energy saving, lightweig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12
CPCC08J9/32C08J9/0085C08J9/0061C08J9/009B32B27/32B32B27/12B32B5/02B32B17/067B32B17/10B32B27/308B32B27/36B32B27/08B32B27/18B32B33/00B32B37/08B32B37/10C08J2203/22C08J2205/052C08J2323/12C08J2475/04C08J2403/04C08J2425/14C08J2409/08C08J2429/04B32B2605/08B32B2605/003B32B2262/101
Inventor 周小三马永龙潘仕荣张伟忠
Owner 运研材料科技(上海)有限公司
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