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Electromagnetic shielding plastic and preparation method thereof

A technology of electromagnetic shielding and plastics, which is applied in the field of electromagnetic shielding plastics and its preparation, can solve the problems of no electromagnetic shielding function, inappropriate precision instruments, difficult shape and other problems, and achieve excellent electromagnetic wave absorption performance, excellent physical and mechanical properties, electromagnetic The effect of high shielding performance

Inactive Publication Date: 2017-05-10
ZHENGZHOU ZHANGMENG NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the shells of many precision instruments require electromagnetic shielding. The existing shielding generally uses metal shells as electromagnetic shielding shells. Although metal shells have electromagnetic shielding functions, the processing is more complicated, the cost is high, and the weight is heavy. In addition, its shape is not easy to shape. , not suitable for precision instruments
The traditional plastic shell can give people a satisfactory appearance but has no electromagnetic shielding function.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] An electromagnetic shielding plastic, the main raw materials in parts by weight are: 5 parts of bamboo fiber, 30 parts of phenolic resin, 10 parts of silicone rubber, 5 parts of melamine, 8 parts of nylon, 2 parts of sodium tripolyphosphate, 10 parts of clay, wood 7 parts of fiber, 5 parts of calcium carbonate.

[0015] A preparation method of electromagnetic shielding plastic, the specific steps are:

[0016] First, mix bamboo fiber, phenolic resin, silicone rubber, melamine, nylon, sodium tripolyphosphate, clay, wood fiber, and calcium carbonate, place them in a reaction kettle, and filter them after heat treatment to obtain polymer nanospheres; then, put Add the polymer nanospheres into the twin-screw extruder, set the head temperature at 180°C, the material temperature at 195°C, control the feeding speed at 10r / min, and control the pressure at 1.0MPa. After granulation, carry out mold molding to obtain Electromagnetic shielding plastic.

Embodiment 2

[0018] An electromagnetic shielding plastic, the main raw materials in parts by weight are: 8 parts of bamboo fiber, 33 parts of phenolic resin, 14 parts of silicone rubber, 5 parts of melamine, 10 parts of nylon, 2 parts of sodium tripolyphosphate, 10 parts of clay, wood 9 parts of fiber, 7 parts of calcium carbonate.

[0019] A preparation method of electromagnetic shielding plastic, the specific steps are:

[0020] First, mix bamboo fiber, phenolic resin, silicone rubber, melamine, nylon, sodium tripolyphosphate, clay, wood fiber, and calcium carbonate, place them in a reaction kettle, and filter them after heat treatment to obtain polymer nanospheres; then, put Add the polymer nanospheres into the twin-screw extruder, set the head temperature at 185°C, the material temperature at 196°C, control the feeding speed at 12r / min, and control the pressure at 1.5MPa. After granulation, carry out mold molding to obtain Electromagnetic shielding plastic.

Embodiment 3

[0022] An electromagnetic shielding plastic, the main raw materials in parts by weight are: 10 parts of bamboo fiber, 35 parts of phenolic resin, 17 parts of silicone rubber, 7 parts of melamine, 12 parts of nylon, 4 parts of sodium tripolyphosphate, 13 parts of clay, wood 10 parts of fiber, 8 parts of calcium carbonate.

[0023] A preparation method of electromagnetic shielding plastic, the specific steps are:

[0024] First, mix bamboo fiber, phenolic resin, silicone rubber, melamine, nylon, sodium tripolyphosphate, clay, wood fiber, and calcium carbonate, place them in a reaction kettle, and filter them after heat treatment to obtain polymer nanospheres; then, put Add the polymer nanospheres into the twin-screw extruder, set the head temperature at 190°C, the material temperature at 198°C, control the feeding speed at 15r / min, and control the pressure at 2.0MPa. After granulation, carry out mold molding to obtain Electromagnetic shielding plastic.

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Abstract

The invention discloses an electromagnetic shielding plastic and a preparation method thereof. The electromagnetic shielding plastic comprises the following main raw materials in parts by weight: 5-15 parts of bamboo fiber, 30-40 parts of phenolic resin, 10-18 parts of organic silicon rubber, 5-8 parts of melamine, 8-15 parts of nylon, 2-6 parts of sodium tripolyphosphate, 10-15 parts of clay, 7-14 parts of wood fiber and 5-10 parts of calcium carbonate. The electromagnetic shielding composite plastic produced by low-cost bamboo fiber, organic silicon rubber, melamine and clay has excellent electromagnetic wave absorption property of the bamboo fiber and also has excellent physical and mechanical properties of the rubber material, is high in electromagnetic shielding performance, simple in preparation method and low in production cost.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to an electromagnetic shielding plastic and a preparation method thereof. Background technique [0002] With the development of modern science and technology and the wide application of modern electronics and communication technologies, in order to prevent information leakage and interference, the number of objects requiring electromagnetic shielding is increasing, and the degree of shielding is increasing. The time and space requirements for shielding increasing day by day. For example, the shells of many precision instruments require electromagnetic shielding. The existing shielding generally uses metal shells as electromagnetic shielding shells. Although metal shells have electromagnetic shielding functions, the processing is more complicated, the cost is high, and the weight is heavy. In addition, its shape is not easy to shape. , not suitable for precision instruments. The ...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L97/02C08L83/04C08L77/00C08K13/02C08K5/3492C08K3/32C08K3/34C08K3/26
CPCC08L61/06C08L2205/025C08L2205/035C08L2205/16
Inventor 不公告发明人
Owner ZHENGZHOU ZHANGMENG NETWORK TECH CO LTD