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Hot press molding method and device for two-component single polymer composite product

A technology of thermoforming and composite materials, applied in the direction of fabrics, manufacturing tools, textiles and papermaking, etc., can solve the problems of weakening, limited improvement of mechanical strength, inability to obtain maximum strength, etc., achieving low density and high recycling rate , the effect of excellent creep resistance

Active Publication Date: 2022-03-25
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the existing thermocompression molding method for single-polymer composites is limited by a narrow temperature window; on the other hand, the strength of the reinforcement weakens during the molding process, and the strength of the final single-polymer composite product is far from the theoretical strength. Gap, unable to obtain the maximum strength of the theoretical strength value
Although a wide processing temperature window can be established for two-component single-polymer composites, it is still limited in terms of mechanical strength improvement

Method used

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  • Hot press molding method and device for two-component single polymer composite product
  • Hot press molding method and device for two-component single polymer composite product
  • Hot press molding method and device for two-component single polymer composite product

Examples

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Effect test

Embodiment 1

[0052] A two-component single-polymer composite product thermocompression forming device, which consists of a spinning machine (1), a warping machine (2), a weaving machine (3), a cutting machine (4), and a hot press machine (5) And mold (6), described mold (6) is made up of convex mold (6-1) and concave mold (6-2), and cavity shape is designed according to product shape; Described heat press (5) includes clamping mold System (5-1), temperature control system (5-2), mold (6) is installed on the clamping system (5-1) of hot press (5); temperature control system (5-2) comprises heating wire , cooler, thermocouple and controller, the punch (6-1) and the die (6-2) are provided with a heating wire channel, a cooling water channel and a thermocouple installation hole, the heating wire is arranged in the heating wire channel, cooling The water channel is connected with the cooler through a pipe joint and a water pipe, and the thermocouple is arranged in the thermocouple installation ...

Embodiment 2

[0067] Polypropylene is produced by addition polymerization of propylene. It is a colorless, odorless, non-toxic, translucent, lightweight thermoplastic polymer with chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties and Good high wear resistance processing performance, etc. The chemical formula is (C 3 h 6 ) n , the density is 0.89~0.91g / cm 3 , The operating temperature range is -30~140℃. Polypropylene is widely used in the production of clothing, blankets and other fiber products, textiles, medical equipment, automobiles, bicycles, electronic appliances, construction, pipelines, chemical containers, etc., and is also used in food and pharmaceutical packaging. And because of its plasticity, polypropylene materials are gradually replacing wooden products, and their high strength, toughness and high wear resistance have gradually replaced the mechanical functions of metals. In addition, polypropylene has good grafting and compo...

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Abstract

The invention relates to a hot press molding method and device for a double-component single polymer composite product, and belongs to the technical field of polymer composite molding processing. The method comprises the following steps: respectively spinning polymer raw materials with two components with the same chemical formula to prepare continuous fibers, mixing and weaving the double-component fibers into double-component fiber cloth, placing the double-component fiber cloth in a mold in a single layer or in a multi-layer overlapping manner, and carrying out hot press molding to obtain the double-component single-polymer composite material product. The device consists of a plurality of groups of spinning machines, warping machines, knitting machines, cutting machines, hot presses and molds. The method and the device are used for preparing the two-component single polymer composite material product with small density, high recycling rate and good interface adhesion, a processing temperature window wider than that of a traditional preparation method can be established, and a product with the mechanical strength close to the theoretical mechanical strength can be obtained.

Description

technical field [0001] The invention relates to a method and a device for hot-press forming a two-component single-polymer composite material product, and belongs to the technical field of polymer composite material forming and processing. Background technique [0002] In recent years, fiber-reinforced polymer composites have been widely used and developed rapidly, especially meeting the urgent needs of automotive lightweight development. With people's continuous attention to energy conservation and environmental protection, improving the recycling performance of fiber reinforced polymer composites has become a research hotspot in related industries. Traditional fiber-reinforced polymer composites are composed of a matrix and a reinforcement, usually with a polymer as the matrix, and glass fibers, carbon fibers, boron fibers, aramid fibers, silicon carbide fibers, etc. as reinforcements. Due to the presence of reinforcements, the recycling and reuse of fiber-reinforced poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/02B29C43/32D01D13/00D02H3/00D03D15/283D03D25/00D03D13/00
CPCB29C43/02B29C43/32D01D13/00D02H3/00D03D15/283D03D25/005D03D13/00D10B2321/022D10B2321/021D10B2331/02D10B2331/04D10B2331/061
Inventor 王建
Owner BEIJING UNIV OF CHEM TECH
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