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Fast-curing temperature indicating adhesive as well as use method and preparation method thereof

A fast-curing, light-curing technology, used in adhesives, adhesive types, polyether adhesives, etc., can solve the problems of non-curing at the bottom of the glue, easy overflow, unable to achieve bonding effect, etc., to solve the depth of curing insufficient effect

Active Publication Date: 2021-08-06
XIAMEN WELDTONE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Document CN108219736A discloses a black UV glue, which uses light to generate free radicals for curing. However, in the process of making it black, because it is easy to absorb light, the darker the color, the worse the curing speed and effect , so that the curing depth of the later photocuring is not enough
Its OD value (optical density value) reaches about 2.8, but after reproducing the patented technology, it is found that under the condition of 365nm, the curing depth of the patent is actually less than 0.2mm; The bottom of the glue is not solidified and easy to overflow during the scene, and the bonding effect cannot be achieved

Method used

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  • Fast-curing temperature indicating adhesive as well as use method and preparation method thereof
  • Fast-curing temperature indicating adhesive as well as use method and preparation method thereof
  • Fast-curing temperature indicating adhesive as well as use method and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Accurately take each raw material by weight percentage, 80% ethylene glycol dimethacrylate, 0.1% benzophenone, 10% thermal acid generator (TR-TAG of Changzhou Qiangli Electronic New Material Co., Ltd. -50101, the specific temperature T is 120°C, and acid is produced at 120°C); mix the above components, control the temperature at 25°C, evacuate to a vacuum degree of -0.07MPa, and stir at a speed of 50 rpm for 1 hours, until there are no particles; then add 10% polyether acrylate, the temperature is controlled at 25°C, vacuumize to -0.07MPa, stir at 50 rpm for 1 hour, and stir evenly; then add 1% acid Chromogenic powder (colorless to dark green), 1% fumed silica, temperature controlled at 25°C, vacuumed to -0.07MPa, stirred at 50 rpm for 1 hour, stirred evenly, sealed in the dark Just pack it.

Embodiment 2

[0027] Accurately weigh each raw material by weight percentage, 60% isooctyl acrylate, 0.5% benzophenone, 10% thermal acid generator (TR-TAG-50102 of Changzhou Qiangli Electronic New Material Co., Ltd., specific The temperature T is 100°C, and acid is produced at 100°C); the above components are mixed, controlled at a temperature of 25°C, vacuumed to a vacuum degree of -0.07MPa, and stirred at a speed of 50 rpm for 1 hour until no Particles; then add 30% polyether acrylate, the temperature is controlled at 25°C, vacuumize to -0.07MPa, stir at 50 rpm for 1 hour, and stir evenly; then add 5% acid-induced color powder ( Colorless to black), 1% fumed silica, temperature controlled at 25°C, vacuumed to -0.07MPa, stirred at 50 rpm for 1 hour, stirred evenly, sealed and packaged away from light.

Embodiment 3

[0029] Accurately take each raw material by weight percentage, 45% isobornyl acrylate, 1% benzophenone, 5% thermal acid generator (TR-TAG-50108 of Changzhou Qiangli Electronic New Material Co., Ltd., specific The temperature T is 80°C, and acid is produced at 80°C); the above components are mixed, controlled at a temperature of 25°C, vacuumed to a vacuum degree of -0.07MPa, and stirred at a speed of 50 rpm for 1 hour until no Granules; then add 45% polyurethane acrylate, the temperature is controlled at 25°C, vacuumize to a vacuum degree of -0.07MPa, stir at 50 rpm for 1 hour, and stir evenly; then add 5% acid-induced color powder (without color change to black), 8% fumed silica, temperature controlled at 25°C, vacuumed to -0.07MPa, stirred at 50 rpm for 1 hour, stirred evenly, sealed and packaged away from light.

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Abstract

The invention relates to a fast curing temperature indicating adhesive and a use method and a preparation method thereof, the fast curing temperature indicating adhesive adopts matching of a thermally induced acid generator and acid-induced discoloration powder, and due to the acid-base chemical reaction, the reversible reaction cannot occur due to the temperature change, so that the reversible reaction cannot occur even at the temperature of-20 DEG C or below. On the other hand, through a two-step reaction method, transparency is kept during light curing, and under the condition that the rapid curing temperature indicating adhesive is changed into black after color change, the 0D value (0.1 mm) of the product can reach 3 or above, meanwhile, the curing depth is larger than 10 mm, and the problem that the curing depth of black UV adhesive is insufficient is solved.

Description

technical field [0001] The invention relates to the field of viscose, in particular to a fast-curing irreversible discoloration temperature indicating glue and a preparation method thereof. Background technique [0002] At present, most of the existing temperature-changing irreversible adhesives on the market use irreversible temperature-changing powder, which can realize discoloration at high temperature and maintain the color at high temperature when it returns to normal temperature. It can be used to indicate whether the sample has been baked at high temperature. Especially for the environment where thermometers and thermocouples cannot be directly used for temperature measurement. [0003] However, this temperature-changing irreversible adhesive made of irreversible temperature-changing powder also has disadvantages. Because it is a physical reaction, when the ambient temperature drops to about -20 degrees Celsius, it will return to the original color, which is not comp...

Claims

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Application Information

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IPC IPC(8): C09J171/00C09J175/14C09J163/10C09J11/06
CPCC09J171/00C09J175/14C09J163/10C09J11/06C08K5/47
Inventor 曹阳宋亮许逊福魏丹丹赵凤艳
Owner XIAMEN WELDTONE TECH CO LTD