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Photo/thermal initiation fast curing adhesive

A rapid curing and adhesive technology, applied in the direction of adhesives, adhesive additives, epoxy resin glue, etc., can solve the problems of mismatching working conditions of adhesive joints, and achieve the effect of good adaptability and excellent matting ability

Active Publication Date: 2015-09-23
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical requirements for the connection of resin-based composite material components in the automotive industry, the present invention provides a light / thermal double-initiated fast-curing adhesive and its preparation method to meet the needs of automobile composite materials. Material automation, high quality, and fast adhesive connection requirements, solve technical problems such as the mismatch between the conditions caused by the curing of traditional adhesives and the adhesive connection conditions of automotive composite parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 50 grams of E51 epoxy resin, 30 grams of latent thermal initiation liquid imidazolium salt, 1.2 grams of triaryl selenium salt, 1.5 grams of α-hydroxy ketones, 18 grams of carboxyl-terminated liquid nitrile rubber, 25 grams of furnace carbon black, Add each component to the mixer in sequence at room temperature, and after uniform mixing, a light / heat dual-initiated fast-curing adhesive is obtained.

[0027] According to the above formula, the basic properties of the adhesive are as follows:

[0028] Test items standard test Test Conditions typical value color - - black odor - - Odorless after curing Density, g / cm 3 GB / T12007.5-1989 20℃ 1.20 Storage time at room temperature, months - - 3 Setting curing time, min - 150℃ 1 Final curing time, min - 150℃ 2 Shear strength, Mpa GB / T 7124-2008 Room temperature, 10mm / s 35 T peel strength N / mm GB / T 2791-1995 Room temperature, 100mm / s 11 Im...

Embodiment 2

[0030] 70 grams of E55 epoxy resin, 35 grams of latent heat-triggered liquid imidazolium salt, 1.3 grams of diaryliodonium salt, 1.2 grams of thiazolone, 11 grams of liquid silicone rubber, and 10 grams of light calcium carbonate. Add it to the mixer in sequence, and mix evenly to obtain a light / heat double-initiated fast-curing adhesive.

[0031] According to the above formula, the basic properties of the adhesive are as follows:

[0032] Test items standard test Test Conditions typical value color - - White odor - - Odorless after curing Density, g / cm 3 GB / T12007.5-1989 20℃ 1.20 Storage time at room temperature, months - - 3 Setting curing time, min - 150℃ 1 Final curing time, min - 150℃ 2.5 Shear strength, Mpa GB / T 7124-2008 Room temperature, 10mm / s 32 T peel strength N / mm GB / T 2791-1995 Room temperature, 100mm / s 9 Impact peel strength N / mm ISO 11343 Room temperature, 2mm / s 75 ...

Embodiment 3

[0034] 60 grams of F76 epoxy resin, 25 grams of latent thermal initiation liquid imidazolium salt, 0.5 grams of dialkyl hydroxyphenyl sulfonium salt, 0.1 grams of benzoin dimethyl ether, 35 grams of carboxyl liquid nitrile rubber, 40 grams of silicon dioxide , each component is sequentially added to the mixer at room temperature, and after uniform mixing, a light / heat double-initiated fast-curing adhesive is obtained.

[0035] According to the above formula, the basic properties of the adhesive are as follows:

[0036] Test items standard test Test Conditions typical value color - - black odor - - Odorless after curing Density, g / cm 3 GB / T12007.5-1989 20℃ 1.23 Storage time at room temperature, months - - 3 Setting curing time, min - 150℃ 1.5 Final curing time, min - 150℃ 3 Shear strength, Mpa GB / T 7124-2008 Room temperature, 10mm / s 29 T peel strength N / mm GB / T 2791-1995 Room temperature, 100m...

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Abstract

The invention provides a photo / thermal initiation fast curing adhesive which comprises the following components by mass: 40-70 parts of one or more epoxy resin matrixes, 20-40 parts of a latent thermal initiation curing agent, 0.5-5 parts of one or more photo initiation curing agents, 0.1-2.5 parts of one or more photosensitizers, 15-35 parts of one or more flexibilizers, and 20-40 parts of one or more fillers. A preparation method of the photo / thermal initiation fast curing adhesive comprises the following steps: at first, under the action of ultraviolet light, the photo initiation curing agents are used for initiating part of epoxy resin to perform a curing reaction, under the action of heat released during the curing reaction and an external heat source, the temperature of the cured part reaches the latent imidazole initiation reaction temperature of 70-90 DEG C, a latent imidazole complex is activated, epoxy resin is initiated to be quickly cured within 3 min, the automatic, high-quality and fast-cementing connection requirements of a car composite material are met, and the technical problems such as mismatch between the traditional adhesive curing initiation condition and the connection working condition of the car composite material are solved.

Description

technical field [0001] The invention belongs to the technical field of connection, and in particular relates to a light / heat double-initiated fast-curing adhesive. Background technique [0002] Adhesive connection technology completely gets rid of the connection manufacturing processes such as nails, riveting, bolts, flanging or welding in the traditional automobile manufacturing process. It has the advantages of light structure, high connection efficiency, and fatigue resistance. It is promoting a new era in the global automobile manufacturing industry revolution. This new connection mode has become the key point for the mass application of lightweight composite materials in automobiles, and has also become the development direction of lightweight manufacturing in the global automotive industry. [0003] The adhesive connection structure of composite materials for vehicles plays a very important role in the safety and reliability of the vehicle. Due to the anisotropy of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/06
Inventor 任明伟范广宏王翔何琪
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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