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Manufacturing technology for multi-step mixed dual-reinforced GMT sheet material

A manufacturing process and plate technology, which is applied in the field of multi-mixing and double-reinforced GMT plate manufacturing process, can solve the problems of wear and tear of long glass fibers, and achieve the effects of high specific strength, cost reduction, and material consumption reduction.

Inactive Publication Date: 2014-04-23
合肥杰迈特汽车新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of this invention is to provide a multi-mix and double-reinforced GMT sheet manufacturing process, which solves the problem of wear and fracture of long glass fibers during processing, and has a reasonable design layout without grinding polypropylene into powder or making Membrane rewetting, no need for high-pressure compound machine, only ordinary low-pressure compound machine, low production cost, easy to control the process

Method used

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  • Manufacturing technology for multi-step mixed dual-reinforced GMT sheet material
  • Manufacturing technology for multi-step mixed dual-reinforced GMT sheet material
  • Manufacturing technology for multi-step mixed dual-reinforced GMT sheet material

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Embodiment Construction

[0021] Referring to the accompanying drawings, a multi-mixing and double-reinforced GMT sheet manufacturing process, the process described, makes polypropylene fibers and long glass fibers evenly distributed, mutual infiltration, three-step mixing, molding, and shaping to obtain semi-finished products, semi-finished products and The adhesive film and the substrate are combined to form a GMT sheet. In the three-step mixing, the first step is mixed by licker-in roller a and licker-in roller b for preliminary mixing, then the second step is mixed and then mixed by licker-in roller a and licker-in roller b, and the third step is carried out by licker-in roller a mixed with licker-in b. The needle density in the licker-in roller a and the licker-in roller b in the third step mixing roller is larger than that of the licker-in roller a and licker-in roller b in the second step mixing, and the needle size is smaller than that in the second step mixing, so that blending, compounding T...

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Abstract

The invention discloses a manufacturing technology for a multi-step mixed dual-reinforced GMT sheet material. The manufacturing technology comprises: enabling polypropylene fiber and long glass fiber to be distributed uniformly and mutually infiltrated, performing three-step mixing, performing molding and fixing to obtain a semi-finished product, and compositing the semi-finished product with a glue membrane and non-woven fabric for forming the GMT sheet material. The manufacturing technology provided by the invention helps to solve the problems of wearing and fracture of long glass fiber during processing, the design distribution is reasonable, polypropylene does not need grinding into powder or preparing into membranes for once-more infiltration, a high-pressure compounding machine is not needed and only a common low-pressure compounding machine is needed, the manufacturing cost is low, and the technological process is convenient to control.

Description

[0001] technical field [0002] The invention relates to the technical field of new composite materials, in particular to a manufacturing process for multi-mixed and double-reinforced GMT plates. [0003] Background technique [0004] The traditional GMT sheet includes an intermediate layer made of glass fiber needle felt or woven mixed mat, a surface covering layer made of PP sheet or molten PP resin, and a bottom layer made of non-woven fabric. The middle is to impregnate the glass fiber felt by high temperature melting. Since polypropylene is a non-polar high polymer and has no affinity with glass fiber, it is difficult to combine the cross section of the resin matrix with the glass fiber, resulting in delamination when the sheet is molded. At the same time, due to the extensive use Adhesives cause pollution to the environment, and at the same time, when mixing, the wear is relatively large and the long glass fibers are prone to breakage and severe wear. [0005] Cont...

Claims

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Application Information

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IPC IPC(8): B32B37/15
Inventor 周建国吉宏伟李维栋
Owner 合肥杰迈特汽车新材料有限公司
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