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Preparation method of UV-moisture dual curing acid and alkali resistant conformal paint

A dual-curing, acid and alkali-resistant technology, applied in the field of coatings, can solve the problem that the shadow area cannot be cured, and achieve the effect of not affecting the ease of operation, improving stability and reducing viscosity

Active Publication Date: 2021-08-27
宿迁市同创化工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method for UV-moisture dual-curing acid and alkali resistant conformal paint, so as to solve the technical problem that the UV-cured conformal material can easily lead to the problem that the shadow area cannot be cured on the PCB with plug-ins

Method used

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  • Preparation method of UV-moisture dual curing acid and alkali resistant conformal paint
  • Preparation method of UV-moisture dual curing acid and alkali resistant conformal paint
  • Preparation method of UV-moisture dual curing acid and alkali resistant conformal paint

Examples

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Embodiment 1

[0023] Add 900kg of hydroxyl polybutadiene resin into the reaction kettle, stir and heat up to 90-100°C, vacuumize for 1 hour, pass in nitrogen to break the vacuum, cool down to 30-40°C, add 160kg of hexamethylene diisocyanate, stir Evenly, heat up to 80°C, react for 2 hours, add 1 kg of dibutyltin dilaurate, and continue to react for 3 hours to obtain an intermediate product;

[0024] The intermediate product is added to 40kg photoinitiator (configured by photoinitiator 184 and photoinitiator TPO in a mass ratio of 1:1), 120kg reactive diluent (by mass ratio of 1-nonene and 1,7-octadiene in a mass ratio of 3: 7 configuration), 1kg leveling agent BYK333 and 1kg catalyst N,N-dimethylcyclohexylamine, stir evenly to get the finished product, the reaction process and reaction principle are as follows Figure 1-2 shown.

Embodiment 2

[0026] Add 900kg of hydroxyl polybutadiene resin into the reaction kettle, stir and heat up to 90-100°C, vacuumize for 1 hour, pass in nitrogen to break the vacuum, cool down to 30-40°C, add 170kg2,4-toluene diisocyanate, stir Evenly, heat up to 80°C, react for 2 hours, add 1 kg of dibutyltin dilaurate, and continue to react for 3 hours to obtain an intermediate product;

[0027] The intermediate product is added to 40kg photoinitiator (configured by photoinitiator 184 and photoinitiator TPO in a mass ratio of 1:1), 120kg reactive diluent (by mass ratio of 1-nonene and 1,7-octadiene in a mass ratio of 3: 7 configuration), 1kg leveling agent BYK333 and 1kg catalyst N,N-dimethylcyclohexylamine, stir evenly to get the finished product, the reaction process and reaction principle are as follows Figure 1-2 shown.

Embodiment 3

[0029] Add 900kg of hydroxyl polybutadiene resin to the reaction kettle, stir and heat up to 90-100°C, vacuumize for 1 hour, blow in nitrogen to break the vacuum, cool down to 30-40°C, add 240kg of diphenylmethane diisocyanate, and stir evenly , heated up to 80°C, reacted for 2 hours, added 1 kg of dibutyltin dilaurate, and continued to react for 3 hours to obtain an intermediate product;

[0030] The intermediate product is added to 40kg photoinitiator (configured by photoinitiator 184 and photoinitiator TPO in a mass ratio of 1:1), 120kg reactive diluent (by mass ratio of 1-nonene and 1,7-octadiene in a mass ratio of 3: 7 configuration), 1kg leveling agent BYK333 and 1kg catalyst N,N-dimethylcyclohexylamine, stir evenly to get the finished product, the reaction process and reaction principle are as follows Figure 1-2 shown.

[0031] The finished product obtained as described in Implementation 1-3 is tested by the following methods:

[0032] testing method:

[0033] The f...

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Abstract

The present invention provides a preparation method of UV-moisture dual-curing acid and alkali resistant conformal paint, which relates to the field of coatings and includes the following steps: S1. Add hydroxyl-terminated polybutadiene resin into a reaction kettle, stir and heat up to 90-100°C, Vacuumize for 1 hour, pass nitrogen to break the vacuum, cool down to 30-40°C, add end-capping agent, stir evenly, heat up to 80°C, react for 2 hours, add catalyst, continue to react for 3 hours to obtain an intermediate product. The UV-moisture double-curing acid and alkali resistant conformal paint prepared by the present invention not only avoids the problem that the shadow area cannot be completely cured by using a simple UV curing conformal paint, but also improves the acid and alkali resistance of the conformal paint, making the protective performance more effective. Reliable, especially suitable for new energy vehicles, chemical printing and dyeing, sewage treatment and other fields.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a method for preparing an ultraviolet-moisture dual-curing acid and alkali resistant conformal paint. Background technique [0002] Conformal paint is a specially formulated coating used to protect circuit boards and related equipment from environmental erosion. Conformal paint has good high and low temperature resistance; after curing, it forms a transparent protective film with superior insulation , moisture-proof, leakage-proof, shock-proof, dust-proof, anti-corrosion, anti-aging, corona resistance and other properties, PCB is the abbreviation of printed circuit board, also known as printed circuit board, UV three anti-paint is a kind of ultraviolet dual curing E-coating coatings can be cured by moisture in areas that cannot be cured by light. [0003] UV curing can greatly improve the production efficiency of coating curing, but the pure UV curing three-proof material on the PCB with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D5/08
CPCC09D5/08C09D175/14
Inventor 陆俊南易先春史亮亮邱浩吴晶包建刚陆向东王辉
Owner 宿迁市同创化工科技股份有限公司