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Thermal-activated adhesive film and method of producing the same

A heat-activated, adhesive film technology, used in adhesives, epoxy resin adhesives, natural rubber adhesives, etc., can solve the problems of polluted environment curing time, poor storage stability, high cost, and achieve a simple and environmentally friendly preparation process and easy operation. , the effect of low cost

Inactive Publication Date: 2009-04-08
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention mainly solves the problems of the existing glue film that the environment is polluted by solvent volatilization, the curing time is long, the storage stability is poor, the glue overflow phenomenon exists in curing, and the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1, accurately take by weighing nitrile-40 rubber 1000g, activated calcium carbonate powder 1000g, zinc oxide 70g, F-44 100g, E-20 350g, phenoxy resin 250g, benzoxazine 100g, bis-nitrile amine 30g, Film encapsulation method propylene-based thiourea 30g, first roll the rubber on the open mill, then add filler, vulcanized rubber composition, resin and mix evenly on the open mill, finally add crosslinking agent and accelerator to disperse evenly, Then calender to form a film with a thickness of 0.15mm.

[0019] Put the above film between 45# steel sheets, hot press at 180°C and 3MPa pressure for 10s to obtain a sample, the shear strength of which is measured to be 13Mpa; the storage period at 40°C exceeds 20 days, and the storage period at room temperature is 10 months.

Embodiment 2

[0023] Example 2, accurately weigh 3500g of natural rubber, 2000g of mica powder, 1000g of alumina powder, 180g of stearic acid, 10g of N-cyclohexylbenzothiazole sulfenic acid amine, 10g of anti-aging D, 1500g of FB resin, bisphenol A linear 1500g of phenolic resin, 100g of hexamethoxymethyl melamine, 200g of methylol melamine, and 100g of ethylene thiourea. First, the rubber is rolled on an open mill, and then filler, vulcanized rubber composition, and resin are added in the open mill. Mix evenly on the machine, finally add crosslinking agent and accelerator to disperse evenly, and then calender to form a film with a thickness of 0.15mm.

Embodiment 3

[0024] Embodiment 3, accurately weigh 1500g of butadiene rubber, 1500g of carboxylated nitrile rubber, 2500g of bentonite, 80g of magnesium oxide, 10g of N,N-diethyl-dithiocarbamate benzothiazolyl, antioxidant MBZ10g, F- 44 Novolak epoxy resin 2500g, boron trifluoride piperidine complex 100g, first roll the rubber on the open mill, then add filler, vulcanized rubber composition, resin and mix evenly on the open mill, and finally add The cross-linking agent and accelerator are uniformly dispersed, and then calendered to form a film with a thickness of 0.10 mm.

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PUM

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Abstract

The invention discloses a thermal activating glue film. The thermal activating glue film is characterized by consisting of resin, rubbers, fillings, a cross linker, a perduren compound and a promoter which are melted and mixed by a mixing mill and then calendered into a film. The thermal activation glue film is a thermal activating glue film which has the advantages of fast solidifying speed, excellent storage stability and high solidifying intensity, temperature resistance, environment protection and low cost.

Description

Technical field: [0001] The invention relates to the technical field of adhesive films, in particular to a thermally activated adhesive film and a preparation method thereof, in particular to a thermally activated adhesive film with fast curing speed, temperature resistance and stable storage under hot pressing. Background technique: [0002] The adhesive film is usually non-tacky at room temperature, but it melts or cross-links and solidifies under heat and pressure to bond the adherend. There are many types of existing adhesive films according to different raw materials and uses, some have a long curing time, some have poor storage stability, some have glue overflow after curing, some have high cost, and as we all know, there are many adhesive films at present. It is a solvent method process, that is, all substances are first dissolved in a solvent, mixed evenly and then coated, and the required film is formed after the solvent volatilizes. This process is relatively compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J163/00C09J171/10C09J161/06C09J179/02C09J107/00C09J109/00C09J133/04C09J123/22C09J109/06C09J109/02
Inventor 庄恒冬王建斌解海华
Owner YANTAI DARBOND TECH
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