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In-mold self-reinforced co-injection molding method for single polymer composites

A technology of composite materials and molding methods, which is applied in the field of injection molding molds, can solve problems such as damage to the overall performance of composite materials, and achieve the effect of flexible and convenient regulation and wide selection of materials

Active Publication Date: 2017-05-03
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the traditional hot pressing method, this method has the advantages of simple equipment structure and easy operation. However, this method also needs to lay prefabricated reinforcement fibers in advance, and similar to the extrusion method, thermoplastic polymer reinforcement fibers and molten matrix Direct polymer contact can lead to damage to the overall properties of the composite

Method used

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  • In-mold self-reinforced co-injection molding method for single polymer composites
  • In-mold self-reinforced co-injection molding method for single polymer composites
  • In-mold self-reinforced co-injection molding method for single polymer composites

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Embodiment Construction

[0022] Below in conjunction with technical scheme and accompanying drawing 1 (a), (b) and 2 (a), (b) describe the technological process of preparing SPC of the present invention in detail.

[0023] 1) Install the matrix cavity insert 6 and the reinforced molding insert 10 in the accompanying drawing 2 on the movable template 5 through positioning pins and socket head cap screws; Water hole, use the mold temperature machine to control the temperature of the mold during the molding process, which constitutes the mold for self-reinforced co-injection molding SPC in the mold;

[0024] 2) Set the molding parameters of the injection molding machine, inject the plasticized polymer into the mold cavity, and when forming the first mold, because there is no matrix in the reinforced phase insert, only one SPC matrix can be obtained, the first mold The amount of plasticizing should be increased appropriately;

[0025] 3) Cut off the handle of the formed SPC matrix sample, and place the p...

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Abstract

The invention discloses a mold internal self-enhancement co-injection molding method of a monopolymer composite material, and belongs to the injection molding mold technical field. A matrix of the monopolymer composite material is molded through an injection molding method firstly, the surface of the matrix is provided with reserved grooves, the matrix is put into the mold again, the grooves on the matrix are filled to obtain the monopolymer composite material, and thus injection molding of all components of the monopolymer composite material is completed by using one set of mold; the problems that complex process, long molding period and strict requirements of raw materials in preparation of the monopolymer composite material by ways of hot pressing, extrusion and injection molding are overcome. The method for mold internal self-enhancement co-injection molding of the monopolymer composite material can realize mass production and can be applied to actual production of monopolymer composite material products.

Description

technical field [0001] The invention belongs to the technical field of injection molding moulds, and relates to a polymer self-reinforcing method and a method for preparing single polymer composites (Single Polymer Composites, SPC) by injection molding, in particular to a self-reinforcing co-injection molding of single polymer composites Forming method. Background technique [0002] Polymer has the advantages of good processing technology, low density, high specific strength (the specific strength of polymer is much higher than that of cement concrete, close to or even exceeds that of steel, and belongs to a light-weight and high-strength material), and good chemical stability. With the rapid development of human productivity, the application range of polymers has become wider and wider, and it has been difficult for single-component polymer materials to meet the increasing use requirements. In this case, polymer composite materials have emerged as the times require. Accord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/26
CPCB29C45/0005B29C45/2602
Inventor 姜开宇杨磊王龙飞王敏杰
Owner DALIAN UNIV OF TECH
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