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Anti-static shielding material and preparation method thereof

A shielding material and anti-static technology, which is applied in the field of anti-static shielding materials and its preparation, can solve the problems of high surface resistance, poor anti-static performance, and high risk of anti-static shielding bags, and achieve reduced surface resistivity and ESD risks, The effect of blocking physical loss and blocking pollution

Pending Publication Date: 2021-07-30
SHENZHEN CHANGYUAN TEFA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface resistance of the antistatic shielding bag is high and unstable, especially in an environment with relatively low humidity, the risk of ESD (Electro-Static discharge, electrostatic discharge) is relatively high, and the antistatic performance is poor

Method used

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  • Anti-static shielding material and preparation method thereof
  • Anti-static shielding material and preparation method thereof
  • Anti-static shielding material and preparation method thereof

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preparation example Construction

[0038] The present invention also proposes a method for preparing an antistatic shielding material, which is used to prepare an antistatic shielding material, comprising the following steps:

[0039] Masterbatch processing: the antistatic layer, shielding layer and heat-sealing layer are mixed and granulated according to the required preparation materials to obtain the antistatic layer masterbatch, shielding layer masterbatch and heat-sealing layer masterbatch respectively;

[0040] Extrusion: The obtained antistatic layer masterbatch, shielding layer masterbatch and heat-sealing layer masterbatch are co-extruded and blown to form an antistatic shielding material; the processing temperature of the antistatic layer masterbatch is 170°C to 220°C, The processing temperature of shielding layer masterbatch is 180°C to 230°C, the processing temperature of heat sealing layer masterbatch is 170°C to 210°C, and the extrusion ratio of antistatic layer, shielding layer and heat sealing la...

Embodiment 1

[0048] An antistatic shielding material, which sequentially includes an antistatic layer, a shielding layer and a heat-sealing layer, wherein, in parts by weight, the antistatic layer includes the following components: 47.4 parts of high-density polyethylene, 20 parts of low-density polyethylene, linear 20 parts of low density polyethylene, 8.8 parts of superconducting carbon black, 2 parts of oxidized polyethylene wax, 1 part of antioxidant, 0.5 part of PPA powder, 0.3 part of titanate coupling agent;

[0049] The shielding layer includes the following components: 10 parts of high-density polyethylene, 20 parts of low-density polyethylene, 36 parts of linear low-density polyethylene, 25 parts of superconducting carbon black, 4 parts of oxidized polyethylene wax, 1.5 parts of antioxidant, PPA 0.8 part of powder, 1 part of maleic anhydride grafted oxidized polyethylene wax, 0.5 part of titanate coupling agent, 2 parts of coupling dispersant for conductive material; in this embod...

Embodiment 2

[0055] An antistatic shielding material, which sequentially includes an antistatic layer, a shielding layer and a heat-sealing layer, wherein, in parts by weight, the antistatic layer includes the following components: 47.4 parts of high-density polyethylene, 22.3 parts of low-density polyethylene, linear 20 parts of low-density polyethylene, 8 parts of carbon nanotubes, 1 part of maleic anhydride grafted oxidized polyethylene wax, 1 part of silicone powder, 1 part of antioxidant, 0.5 part of PPA powder, and 0.3 part of silane coupling agent;

[0056] The shielding layer includes the following components: 10 parts of high-density polyethylene, 25 parts of low-density polyethylene, 40 parts of linear low-density polyethylene, 20 parts of carbon nanotubes, 2 parts of silicone powder, 1.5 parts of antioxidant, 0.8 parts of PPA powder 3 parts, 3 parts of maleic anhydride grafted oxidized polyethylene wax, 0.5 part of silane coupling agent, 2 parts of coupling dispersant for conduct...

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Abstract

According to the anti-static shielding material and the preparation method thereof, polyolefin resin is used as a base material, a conductive agent with the compatibility similar to that of the base material is added, the anti-static shielding material (blowing film or casting film) with the anti-static layer and the heat sealing layer is formed in a co-extrusion one-time forming mode, an anti-static agent does not need to be sprayed externally, the processing temperature is high, the surface resistivity and the ESD risk of the anti-static shielding material are reduced, and the anti-static shielding material has good anti-static performance and stable anti-static effect even in a low-humidity environment. The anti-static layer has lasting and stable anti-static performance and can block pollution and resist physical loss, so that a protection effect is achieved; and the anti-static shielding material has no glue component, uses the same or compatible material, can be recycled, and is green and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of antistatic shielding materials, in particular to an antistatic shielding material and a preparation method thereof. Background technique [0002] With the continuous development of the electronics industry, electronic products are widely used in every corner of people's production and life. The integration and precision of components are constantly improving, and they are also more and more sensitive to static electricity. Electrostatic sensitive components need to be Packed in anti-static shielding bags to prevent devices from being damaged by electrostatic discharge. [0003] The anti-static shielding bag mainly used in the traditional market is made of PET aluminized film glue compounded with PE film, and then the surface is anti-static coated. The anti-static PE layer also has an internal anti-static agent. However, the surface resistance of the antistatic shielding bag is high and unstable, especial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K3/04B32B27/32B32B27/18B32B27/08B32B27/06B32B33/00
CPCC08L23/06C08L23/0815B32B27/32B32B27/18B32B27/08B32B27/327B32B33/00B32B2250/242B32B2307/21B32B2307/31B32B2307/212C08L2205/035C08L2207/062C08L2207/066C08L2201/04C08L2205/025C08L2203/20C08K2201/001C08K3/04
Inventor 蔡红军何立乾
Owner SHENZHEN CHANGYUAN TEFA TECH CO LTD
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