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Antistatic protective film with stable tack

An antistatic, protective film technology, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of unstable viscosity, difficult to use, PET film does not have antistatic and electromagnetic shielding properties, etc. , to reduce the self-shrinkage stress, prevent transfer or dissolution, and have obvious antistatic effect.

Active Publication Date: 2021-03-30
东莞市卓华高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) Since the existing PET film does not have antistatic and electromagnetic shielding properties, it is difficult to use it in the packaging of electronic components
[0005] 2) Due to environmental protection and cost requirements, acrylate pressure-sensitive adhesives for PET protective films are gradually becoming water-based, but acrylate emulsion pressure-sensitive adhesives generally have the disadvantage of unstable viscosity

Method used

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  • Antistatic protective film with stable tack
  • Antistatic protective film with stable tack
  • Antistatic protective film with stable tack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An antistatic protective film with stable viscosity, comprising a PET substrate layer, an antistatic layer arranged on the upper surface and a lower surface of the PET substrate layer, and an adhesive layer arranged on the outer surface of the antistatic layer;

[0029] Wherein, the antistatic layer comprises the composition of the following parts by weight:

[0030]

[0031] Wherein, the adhesive layer comprises the composition of the following parts by weight:

[0032]

[0033] Wherein, the number average molecular weight of the polyacrylamide is 12000-13000 g / mol. The number average molecular weight of the propylene-acrylamide copolymer is 9000-10000 g / mol. The number average molecular weight of the polyurethane resin is 16000-17000 g / mol. The number average molecular weight of polybutyl methacrylate is 17000-18000 g / mol.

Embodiment 2

[0035] Different from Example 1, the antistatic layer comprises the following compositions by weight:

[0036]

[0037] Wherein, the adhesive layer comprises the composition of the following parts by weight:

[0038]

[0039] Others are the same as in Embodiment 1, and will not be repeated here.

Embodiment 3

[0041] Different from Example 1, the antistatic layer comprises the following compositions by weight:

[0042]

[0043] Wherein, the adhesive layer comprises the composition of the following parts by weight:

[0044]

[0045] Others are the same as in Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses an antistatic protective film with stable viscosity. The antistatic protective film comprises a PET base material layer, antistatic layers arranged on the upper surface and thelower surface of the PET base material layer, and adhesive layers arranged on the outer surfaces of the antistatic layers; each antistatic layer is prepared from the following components in parts byweight: 100 parts of lithium bisimide, 5-10 parts of dimethyl fumarate, 5-8 parts of glass powder and 3-5 parts of a dispersant; and each adhesive layer is prepared from the following components in parts by weight: 100 parts of polyurethane resin, 5-10 parts of poly-n-butyl methacrylate, 15-20 parts of polyacrylamide and 5-10 parts of a propylene-acrylamide copolymer. Compared with the prior art,the protective film provided by the invention has the stable viscosity and good antistatic performance simultaneously, and can be used for packaging of electronic components.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to an antistatic protective film with stable viscosity. Background technique [0002] Polyethylene terephthalate is referred to as PET, which is a high polymer derived from the dehydration condensation reaction of ethylene terephthalate; ethylene terephthalate is composed of terephthalic acid and ethylene glycol It is obtained by esterification of alcohol; PET is a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface; it has excellent physical and mechanical properties in a wide temperature range, and the long-term use temperature can reach 120 ° C. Excellent, even at high temperature and high frequency, its electrical properties are still good, but its corona resistance is poor, creep resistance, fatigue resistance, friction resistance, and dimensional stability are all good; because of its above excellent Characteristics, in the prior a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/29C09J7/25C09J7/24C09J7/30C09J175/04C09J133/10C09J133/26C09J123/14
CPCC08K5/053C08K5/17C08L2201/08C08L2205/035C09J175/04C09J2423/046C09J2467/006C09J7/29C09J7/30C09J2301/41C08L33/10C08L33/26C08L23/147
Inventor 李武
Owner 东莞市卓华高分子材料有限公司
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