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Magnetic position forming method of high polymer material

A technology of polymer materials and molding methods, which is used in the molding of 3D printing products or fiber products, rubber products, and plastic products. And the effect of continuous production, quick product effect and low cost

Inactive Publication Date: 2018-12-14
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of production method and mode is costly on the one hand, and the quality uniformity of the product on the other hand is not guaranteed
[0004] The development of technology in recent years, the development of 3D printing, spinning and other processes have made the products more diversified. However, due to the complex structure of many products, especially some products containing metal skeleton materials, the positioning of the skeleton materials in the production process is very important. For example, the positioning of skeleton materials such as bead rings in tire products is basically done manually or with assistance, and it is difficult to guarantee that large deviations will occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Heat thermoplastic polyurethane to 100°C, the skeleton material containing magnetic elements is woven with a laminated mesh structure, positioned in the mold, the positioning deviation is 0.01mm, the electromagnetic force is 1T, start the pouring machine to pour into the mold, fill the mold to maintain pressure 0.2MPa, keep warm at 80°C, release the mold after 2h, place the cast polyurethane product in an 80°C drying tunnel for post-treatment for 20h, cool and solidify, mold and release to obtain a polyurethane product.

Embodiment 2

[0035] Heat the high-density polyethylene resin to 180°C. The skeleton material containing magnetic elements adopts a single-layer net cylinder structure, and is positioned in the mold with a positioning deviation of 0.02mm and a permanent magnetic force of 0.1T. Start the injection machine and inject it into the mold. The injection pressure is 3 MPa, the temperature is kept at 50°C, the film is released after 3 minutes, cooled and solidified, molded and demoulded to obtain polyethylene products.

Embodiment 3

[0037] Heat the low-density polyethylene resin to 160°C. The skeleton material containing the magnetic elements adopts a multi-layer mesh cylinder structure, and is positioned in the mold with a positioning deviation of 0.02mm and a permanent magnetic force of 0.2T. The heated low-density polyethylene The resin blown film is adsorbed to the fixed skeleton material, kept at 40°C for 4 minutes, cooled and solidified, molded and demoulded to obtain low-density polyethylene blown film products.

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PUM

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Abstract

The invention discloses a magnetic position forming method of a high polymer material. The method comprises specific steps as follows: preparation of a mold, preparation of raw materials, material adding, forming, cooling, curing and the like. A magnetic element contained in a framework material is fixed by a magnetic element arranged in the mold, and the inner positioning of the framework material is completed. The magnetic substance added to the framework material forms tension with the magnetic element of the mold to set and position the framework material. A fluidic high polymer material is injected into the mold, and the high polymer material product is obtained after cooling, curing and forming. The method adopts a simple process, the preparation process of the product is simplifiedby the magnetic positioning technology, the production cost is reduced, human factors are reduced, the product quality is improved, and industrial and continuous production are facilitated.

Description

technical field [0001] The invention relates to a magnetic positioning molding method for polymer materials, which is mainly used in the molding of rubber products, plastic products, 3D printing products or fiber products. Background technique [0002] With the improvement of industrial technology and living standards, people have higher and higher requirements for various products, not only require low price and practicality, but also further require beautiful appearance, light weight, and long service life. Therefore, in recent years, more and more composite material products are used to meet the diverse needs of people by combining the material properties of different materials. [0003] The traditional molding methods of polymer materials include pouring, injection, molding, etc. The process of most products is complicated, and the product quality is greatly affected by human factors. For example, in the traditional tire production process, the rubber elastic body is co...

Claims

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Application Information

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IPC IPC(8): B29C33/16
Inventor 王益庆沈家锋张立群
Owner BEIJING UNIV OF CHEM TECH