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Damping low-smoke halogen-free flame-retardant CR foam double-faced adhesive tape, and preparation and application thereof

A double-sided adhesive and double-sided technology, applied in adhesives, film/sheet adhesives, adhesive additives, etc., can solve the problem that double-sided adhesives cannot meet the requirements of flame retardancy, shock absorption, light weight, and shock absorption and buffering capabilities Limited and other problems, to achieve good foaming uniformity and mechanical strength, improve flame retardancy, and good shock absorption performance

Active Publication Date: 2022-02-01
东莞市墨田科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the existing double-sided adhesive can not meet the technical defects such as flame retardancy, shock absorption, light weight, etc.
However, the middle substrate layer is made of high-temperature-resistant acrylic, silicone or polyurethane pressure-sensitive adhesive with strong viscosity, and the shock absorption and buffering capacity of the upper and lower release layer structures is limited.

Method used

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  • Damping low-smoke halogen-free flame-retardant CR foam double-faced adhesive tape, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A shock-absorbing, low-smoke, halogen-free, flame-retardant CR foam double-sided adhesive of this embodiment has a schematic diagram of its laminated structure as shown in figure 1 shown. Including the halogen-free flame-retardant CR foam carrier layer 1, the halogen-free flame-retardant CR foam carrier layer 1 is covered with a thermally conductive halogen-free flame-retardant acrylate adhesive layer 2, and one side is covered with a thermally conductive halogen-free flame-retardant acrylate adhesive layer 2 A release film 3 is also attached, and the release film adopts double-plastic double-silicon release paper. The thickness of the halogen flame-retardant CR foam carrier layer in this embodiment can be adjusted in the range of 0.5mm-1mm; the thickness of the heat-conducting halogen-free flame-retardant acrylate adhesive layer can be adjusted in the range of 0.05mm-0.1mm.

[0040] A shock-absorbing, low-smoke, halogen-free, flame-retardant CR foam double-sided adhes...

Embodiment 2

[0053] A shock-absorbing, low-smoke, halogen-free, flame-retardant CR foam double-sided adhesive of this embodiment is prepared by the following method:

[0054] (1) Preparation of halogen-free flame-retardant CR foam:

[0055] 1) Add IFR powder (consisting of acid source ammonium polyphosphate, gas source melamine polyphosphate and carbon source triazine macromolecular char forming agent) into silica sol and mix evenly. The amount of silica sol added is based on solid content It is 5% of the mass of the IFR powder, and then 0.2% of the mass of the IFR powder is added with vinyltrimethoxysilane for surface modification, vacuum-dried and pulverized to obtain a surface-modified IFR flame retardant.

[0056] 2) In parts by weight, 40 parts of chloroprene rubber, 1 part of stearic acid and 6 parts of naphthenic oil are added into a mixer and mixed evenly, and the mixing temperature is controlled at 85-95°C.

[0057] 3) Put the mixed material of step 2) into the banbury mixer for ...

Embodiment 3

[0066] A shock-absorbing, low-smoke, halogen-free, flame-retardant CR foam double-sided adhesive of this embodiment is prepared by the following method:

[0067] (1) Preparation of halogen-free flame-retardant CR foam:

[0068] 1) Add IFR powder (composed of acid source aluminum diethyl hypophosphite, gas source melamine polyphosphate and carbon source pentaerythritol) into the silica sol and mix evenly. The amount of silica sol added is IFR powder in terms of solid content. 30% of the mass of the material, and then add vinyltrimethoxysilane of 2% of the mass of the IFR powder to modify the surface, dry in vacuum, and pulverize to obtain a surface-modified IFR flame retardant.

[0069] 2) In parts by weight, 55 parts of chloroprene rubber, 2 parts of stearic acid and 3 parts of naphthenic oil are added into the mixer and mixed evenly, and the mixing temperature is controlled at 85-95°C.

[0070] 3) Put the mixed material of step 2) into the internal mixer and banbury for 3 mi...

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Abstract

The invention belongs to the technical field of special bonding materials, and discloses a damping low-smoke halogen-free flame-retardant CR foam double-faced adhesive tape as well as preparation and application thereof. The double-faced adhesive tape comprises a halogen-free flame-retardant CR foam carrier layer, wherein heat-conducting halogen-free flame-retardant acrylate adhesive layers cover the two faces of the carrier layer. The preparation method comprises the following steps: banburying chloroprene rubber, a plasticizer, softening oil, a vulcanizing agent, a filler, a surface-modified solid flame retardant, a liquid flame retardant, a foaming agent and other functional additives, and carrying out vulcanizing and foaming to obtain halogen-free flame-retardant CR foam; uniformly stirring and mixing a glue solution prepared from an acrylate adhesive, a diluting solvent and a cross-linking agent with IFR, a smoke suppressant and a heat-conducting filler to obtain a heat-conducting halogen-free flame-retardant acrylate adhesive; and attaching the heat-conducting halogen-free flame-retardant acrylate adhesive to the two faces of the halogen-free flame-retardant CR foam so as to obtain the damping low-smoke halogen-free flame-retardant CR foam double-faced adhesive tape. The double-faced adhesive tape disclosed by the invention has good flame retardant property and shock absorption property, and can be used for lithium ion battery protection.

Description

technical field [0001] The invention belongs to the technical field of special bonding materials, and in particular relates to a shock-absorbing low-smoke, halogen-free, flame-retardant CR foam double-sided adhesive and its preparation and application. Background technique [0002] In recent years, lithium-ion batteries have been widely used in portable products, backup power supplies, and electric vehicles due to their advantages such as high energy density and long cycle life. However, during long-term use and storage, lithium-ion batteries will inevitably be squeezed and punctured, which will cause lithium-ion batteries to burn or even explode. It has a broad market prospect to develop a bonding and fixing material that can protect the inter-battery and connection parts from extrusion and collision, and has good thermal conductivity and flame retardancy. [0003] Patent CN207121561 U discloses a low-density heat-conducting, flame-retardant, and shock-absorbing double-sid...

Claims

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Application Information

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IPC IPC(8): C09J7/26C09J7/30C09J7/40C09J133/00C09J11/04C09J11/06C08J9/10C08L11/00C08K9/06C08K5/5313C08K5/3492C08K5/053H01M50/20
CPCC09J7/26C09J7/30C09J7/40C09J133/00C09J11/04C09J11/06C08J9/103C08J9/009H01M50/20C09J2301/124C09J2301/408C09J2203/33C09J2411/006C09J2301/41C08J2203/04C08J2311/00C08K2003/323C08K9/06C08K3/36C08K3/32C08K5/34922C08K5/3492C08K13/06C08K5/34928C08K5/5313C08K5/053Y02E60/10
Inventor 刘新宝
Owner 东莞市墨田科技实业有限公司
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