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Preparation method of high-temperature-resistant high-persistent-adhesivity cover film or protective adhesive tape

A technology for protecting tapes and covering films, which is applied in the direction of polymer adhesive additives, film/sheet without carrier, film/sheet-shaped adhesive, etc. It can solve the problem of stickiness that cannot be maintained, excessive VOC overflow, and easy aging To achieve the effect of ensuring cohesion and high stickiness, removing residual VOC, and improving output efficiency

Inactive Publication Date: 2020-11-06
四川铂利明德科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-temperature-resistant high-viscosity cover film or protective tape for the above-mentioned cover film / protective tape that is prone to aging, stickiness cannot be maintained, and VOC overflows during a long-term high-temperature process. The preparation method, the cover film / protective tape prepared by this method has good high temperature resistance, low volatility and high stickiness

Method used

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  • Preparation method of high-temperature-resistant high-persistent-adhesivity cover film or protective adhesive tape
  • Preparation method of high-temperature-resistant high-persistent-adhesivity cover film or protective adhesive tape
  • Preparation method of high-temperature-resistant high-persistent-adhesivity cover film or protective adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Components and content (wy%) in the glue: 40% of acrylic glue, 4% of performance-enhancing components, and the balance of solvent ethyl acetate, the sum of the total mass percentage is 100%.

[0038] The performance enhancing component includes hydroxyethyl acrylate and azobisisobutyronitrile, in parts by weight, 40 parts of hydroxyethyl acrylate and 20 parts of azobisisobutyronitrile.

[0039] The performance enhancing component additionally contains Antioxidant 1010, UV Absorber UV-531 and Toughener ETBN. The addition amount of antioxidant 1010 is 5‰ of the total mass of the glue, the addition amount of ultraviolet light absorber UV-531 is 1%, and the addition amount of toughening agent ETBN is 1%.

[0040]Add the acrylic glue and the performance enhancing components to the ethyl acetate solvent in proportion, mix well and prepare the glue for covering film. The particle size of each substance in the glue is less than 0.5um. Then the prepared glue was coated on a 0.0...

Embodiment 2

[0042] Components and content (wy%) in the glue: 50% of acrylic glue, 5% of performance-enhancing components, and the balance of solvent ether, the sum of the total mass percentage is 100%.

[0043] The performance enhancing component includes hydroxyethyl acrylate and azobisisobutyronitrile, in parts by weight, the hydroxyethyl acrylate is 50 parts, and the azobisisobutyronitrile is 26 parts.

[0044] The performance enhancing component additionally contains antioxidant 1010 and toughening agent ETBN; the added amount of antioxidant 1010 is 3‰ of the total mass of the glue, and the added amount of toughening agent ETBN is 3%.

[0045] Add the acrylic glue and the performance enhancing component into the ether solvent, mix well and prepare the glue for protective tape. The particle size of each material in the glue is less than 0.5um. Then the prepared glue is coated on a layer of 0.100mm thick LCP base film with a coating thickness of 0.003mm, and then enters a tunnel oven at...

Embodiment 3

[0047] Components and content (wy%) in the glue: 40% of organic silica gel, 4% of performance-enhancing components, and the balance of solvent toluene, the sum of the total mass percentage is 100%.

[0048] The performance enhancing component includes hydroxyethyl acrylate and azobisisobutyronitrile, in parts by weight, the hydroxyethyl acrylate is 30 parts, and the azobisisobutyronitrile is 25 parts.

[0049] The performance enhancing component additionally includes a toughening agent ETBN and a plasticizer triphenyl phosphate; the addition amount of the toughening agent ETBN is 2% of the total mass of the glue, and the addition amount of the plasticizer triphenyl phosphate is 3‰.

[0050] Add acrylic glue and performance-enhancing components to the solvent toluene in proportion, and mix well to prepare a covering film glue. The particle size of each substance in the glue is less than 0.5um. Then the prepared glue is coated on a layer of 0.500mm thick PET base film with a coa...

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Abstract

The invention belongs to the field of electronic materials and new materials, and particularly relates to a preparation method of a high-temperature-resistant high-persistent-adhesivity cover film orprotective adhesive tape. The method comprises the following steps: step 1, adding gum and a performance enhancing component into a solvent to prepare glue; step 2, subjecting a layer of a polymer base film to coating or sputtering with the glue, conducting drying and pre-curing by using a tunnel drying oven, and pasting a release film / paper on the glue layer to obtain a pre-cured cover film / protective adhesive tape; step 3, putting the pre-cured cover film / protective adhesive tape into a programmable oven for post-curing to obtain a cured cover film / protective adhesive tape; and step 4, putting the cured cover film / protective adhesive tape into a medium-and-low-temperature oven for tempering treatment to obtain a product. According to the invention, the proper gum, the proper reinforcingcomponent and a proper solvent are adopted, so the low VOC content and high persistent viscosity of a cured glue layer are ensured; process steps are reasonable, the adhesive layer can be gradually and completely cured to form a high-quality three-dimensional cross-linked network, and cohesion, high persistent adhesivity, high temperature resistance and stability of the comprehensive performance of the adhesive layer are guaranteed.

Description

technical field [0001] The invention belongs to the field of electronic materials and new materials, in particular to a preparation method of a high-temperature-resistant high-viscosity covering film or protective tape. Background technique [0002] Cover film / protective tape is a functional material widely used in electronic and electrical, microelectronics, integrated packaging, electrical equipment manufacturing or protection during use. Since it needs to stay on the product to perform a continuous function without aging or falling off, the cover film / protective glue must not only have good protection ability, but also have the characteristics of continuous adhesion ability. [0003] However, the current electronic and electrical equipment is developing towards "thinning" and "miniaturization", and the products are subject to environmental protection regulations such as RoHS and REACH. More and more special materials and matching materials are used in the production proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09J7/24C09J7/22C09J7/30C09J7/10C09J4/02C09J4/06C09J11/06C09J11/08
CPCC09J7/25C09J7/255C09J7/245C09J7/22C09J7/30C09J7/10C09J4/06C09J11/06C09J11/08C09J2479/086C09J2467/006C09J2400/226C09J2433/00
Inventor 钱令习张维熙陈伟郑全智宛如晴
Owner 四川铂利明德科技有限公司
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