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A UV-curable compound

A mixture and ultraviolet light technology, applied in the direction of coating, can solve the problems of large curing exotherm, easy yellowing, slow reaction speed, etc., achieve good heat resistance and stability, low volume shrinkage, and solve large shrinkage. Effect

Active Publication Date: 2022-08-09
上海电动工具研究所(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of the cationic polymerization reaction system are deep curing and small shrinkage, but the reaction speed is slow, and it is difficult to meet the requirements of industrial continuous production; the free radical polymerization reaction system shrinks greatly after radiation curing, and is easy to crack and yellow. hot big
The cation-radical hybrid system is currently immature, and there are defects in various properties, and there are also defects such as large shrinkage and easy yellowing after radiation curing

Method used

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  • A UV-curable compound
  • A UV-curable compound
  • A UV-curable compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A preparation method of a UV-curable mixture, comprising the following steps:

[0058] 1. Add 170 g of methyltetrahydrophthalic anhydride into the reaction kettle 1, control the temperature of the cold and heat cycle machine below 5 °C, and stir at a constant speed of 50 r / min for use.

[0059] 2. Add 110 g of allylamine to the reaction kettle 2, cool to 5°C, then dropwise add half of the allylamine to the reaction kettle 1 at a rate of addition of 1 mL / min, and react for 10 min after the addition is completed. The obtained product is sent back to the reaction kettle 2 by the infusion pump, and after mixing uniformly, it is slowly added dropwise into the reaction kettle 1 at a speed of 1.5mL / min, and the reaction is completed dropwise for 30min. 20°C.

[0060] 3. The temperature is raised to 60° C. and reacted for 6 h to remove unreacted amines to obtain component 1. The purity of component 1 is greater than 95%.

[0061]4. Add 560g component 2 (allyl diethylene glyco...

Embodiment 2

[0064] A method for preparing a UV-curable mixture, comprising the following steps:

[0065] 1. Add 170g of methyltetrahydrophthalic anhydride into the reaction kettle, control the temperature of the cold and heat cycle machine below 5°C, and stir at a constant speed of 50r / min for use.

[0066] 2. 110g of allylamine was added to the reaction kettle 2, cooled to 5°C, and then half of the allylamine was added dropwise to the reaction kettle 1 at a rate of addition of 1 mL / min. The obtained product is sent back to the reaction kettle 2 by the infusion pump. After mixing uniformly, it is slowly added dropwise into the reaction kettle 1 at a speed of 1.5mL / min. After the dropwise addition, the reaction is completed for 30min. 20°C.

[0067] 3. The temperature is raised to 80° C. and reacted for 6 hours to remove unreacted amines to obtain component 1. The purity of component 1 is greater than 95%.

[0068] 4. Add 400g component 2 (allyl diethylene glycol dicarbonate), 280g compo...

Embodiment 3

[0071] A method for preparing a UV-curable mixture, comprising the following steps:

[0072] 1. Add 170g of methyltetrahydrophthalic anhydride into the reaction kettle, control the temperature of the cold and heat cycle machine below 5°C, and stir at a constant speed of 50r / min for use.

[0073] 2. 110g of allylamine was added to the reaction kettle 2, cooled to 5°C, and then half of the allylamine was added dropwise to the reaction kettle 1 at a rate of addition of 1 mL / min. The obtained product is sent back to the reaction kettle 2 by the infusion pump. After mixing uniformly, it is slowly added dropwise into the reaction kettle 1 at a speed of 1.5mL / min. After the dropwise addition, the reaction is completed for 30min. 20°C.

[0074] 3. The temperature is raised to 80° C. and reacted for 6 hours to remove unreacted amines to obtain component 1. The purity of component 1 is greater than 95%.

[0075] 4. Add 280g component 2-allyl diethylene glycol dicarbonate and 280g comp...

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Abstract

The invention discloses a UV-curable mixture. The UV-curable mixture of the present invention comprises an amide group-containing UV active monomer, an allyl resin, a cationic polymerizable resin, an initiator and an auxiliary agent; the amide group-containing UV active monomer is composed of di Synthesis of functional anhydrides and allylamines. Wherein, the allyl resin includes allyl diethylene glycol dicarbonate, the cationic polymerized resin is selected from allyl diethylene glycol dicarbonate in the cycloaliphatic epoxy resin, and the initiator includes a free radical polymerization initiator, a cationic Polymerization initiator, cationic polymerization sensitizer and peroxide accelerator. The UV-curable mixture of the present invention is transparent and non-yellowing after curing under UV, the surface layer is non-sticky, has low volume shrinkage, and has good heat resistance and stability, and solves the problem of large shrinkage of resin materials after UV-curing , the pain point of easy yellowing, and the heat resistance is improved.

Description

technical field [0001] The invention relates to a UV-curable mixture, in particular to a UV-curable mixture with low shrinkage, no yellowing and high heat resistance, and belongs to the technical field of resin materials. Background technique [0002] In the electrical insulation treatment and the bonding of electronic components, the commonly used treatment process is thermal curing. The polymer material undergoes a cross-linking reaction and curing after being heated. However, since the thermal curing temperature is generally higher than 130 °C, the high temperature environment will cause some special electrical appliances. component loss. In addition, because thermal curing takes a period of time to heat up, and the curing speed is slow, in addition to low efficiency, problems such as glue overflow and slip dislocation are prone to occur during the process. [0003] At present, motor production and assembly enterprises have put forward higher requirements for processing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/06C09D4/02
CPCC09D4/06
Inventor 刘农强
Owner 上海电动工具研究所(集团)有限公司