Starch modified UV adhesive and preparation method thereof
A starch modification and adhesive technology, applied in adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve problems such as leaving scratches, easily damaged substrates, failure to disassemble, etc., and achieve good Cohesiveness, avoiding oxygen inhibition, and improving cohesive strength
Pending Publication Date: 2021-08-13
苏州凡络新材料科技有限公司
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Problems solved by technology
However, there is an obvious defect in the use of UV glue bonding, that is, the curing of UV glue is irreversible.
After the shell of electronic equipment is irradiated with UV glue, although it can obtain good bonding strength, it is very difficult to disassemble and rework. The cured UV glue is not easy to remove or the removal conditions are cumbersome, and there is residual glue and easy damage. Defects such as base material and peeled colloid are not easy to clean
When the screen or lens is broken, it is often necessary to use external force to remove the broken glass bit by bit, which takes a lot of man-hours, and the forced peeling off by external force is easy to leave scratches, and in severe cases, the display parts will be damaged. Permanent damage, easy to cause disassembly failure
Method used
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preparation example Construction
[0028] Also provided here is the preparation method of the UV adhesive of above-mentioned starch modification, comprises the following steps:
[0029] 1) Under the yellow light, add acrylic polyester A, acrylic polyester B and photoinitiator into the reaction kettle and heat up to 50°C, and stir until the photoinitiator is completely dissolved;
[0030] 2) Under the yellow light, after cooling down to room temperature, add mercaptan, coupling agent, fumed silica, and finally starch, and stir at room temperature until completely mixed;
[0031] 3) Under the yellow light, grind the fully mixed material through a three-roll mill until the particle size is less than 15um;
[0032] 4) Under the yellow light, after discharging, it should be sealed and protected from light after filling and vacuum defoaming.
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The invention discloses a starch modified UV (ultraviolet) adhesive and a preparation method thereof, and the starch modified UV adhesive is prepared from the following raw materials in parts by mass: 2-4 parts of acrylic polyester A with a structure as shown in a formula 1, 2-3 parts of acrylic polyester B with a structure as shown in a formula 2, 3-5 parts of mercaptan, 0.5-0.7 part of a photoinitiator, 0.05-0.1 part of a silane coupling agent, 0.2-0.5 part of fumed silica and 1-4 parts of starch. The UV adhesive is high in curing speed and can be fully stripped without residual adhesive after high-temperature water bath ultrasonic treatment, the stripping process is simple to operate, and the UV adhesive is environment-friendly.
Description
technical field [0001] The invention relates to the technical field of UV adhesives, in particular to a starch-modified UV adhesive and a preparation method thereof. Background technique [0002] In the prior art, the screens, lenses, and housings of electronic devices such as mobile phones and tablet computers are usually bonded with UV glue, which has high bonding strength and can be cured only by irradiation with ultraviolet lamps. However, there is an obvious defect in the bonding of UV glue, that is, the curing of UV glue is irreversible. After the shell of electronic equipment is irradiated with UV glue, although it can obtain good bonding strength, it is very difficult to disassemble and rework. The cured UV glue is not easy to remove or the removal conditions are cumbersome, and there is residual glue and easy damage. Defects such as base material and peeled colloid are not easy to clean. When the screen or lens is broken, it is often necessary to use external forc...
Claims
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IPC IPC(8): C09J4/02C09J4/06C09J11/06
CPCC09J4/06C09J11/06
Inventor 吴增勋王新闻顾诚范秋雨孔晴
Owner 苏州凡络新材料科技有限公司
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