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Preparation method and application of organic silicon pouring sealant

A silicone potting compound and monosilanol technology, applied in adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of high cost, environmental pollution, easy poisoning of platinum catalysts, etc., and achieve curing speed. Fast, easy to operate, and easy to poison and pollute the environment

Active Publication Date: 2014-10-29
DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] On the premise of ensuring higher performance, in order to overcome the disadvantages of using easily poisoned platinum catalysts, polluting the environment and high cost in the existing hydrosilylation potting system, and at the same time improve the adhesion and dielectric properties, the primary method of the present invention is The purpose is to provide a method for preparing silicone photovoltaic module encapsulant that does not use platinum catalyst, can be quickly cured by ultraviolet light, has low cost, excellent adhesiveness, electrical insulation and dielectric properties

Method used

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  • Preparation method and application of organic silicon pouring sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Mix 30g of 3[(2,3)-glycidyloxy]propyldimethoxysilane, 100g of dimethyldimethoxysilane, 1g of trimethylsilanol, and 116.4g of diethylsilanediol, and add 0.2g of sodium hydroxide, heated to 80°C for condensation reaction for 4 hours, filtered after cooling, and removed low boilers for 2 hours under the conditions of temperature rise / depressurization (60°C / 15mbar) to obtain epoxy siloxane polymer. Take 100g of epoxy siloxane polymer, mix with 0.032g of diphenyliodonium hexafluorophosphate and 30g of white carbon black evenly, and store in the dark to obtain a one-component silicone potting glue;

[0029]Inject the silicone potting compound obtained above into the component to be encapsulated, and irradiate it with a 5.6KW ultraviolet lamp for 60 seconds to complete the curing process.

[0030] Test: According to the American Society for Testing and Materials ASTM D2240, determine the hardness of the silicone potting compound after curing; according to ASTM D6343, measure t...

Embodiment 2

[0033] Mix 25g 3[(2,3)-glycidoxy]propyldimethoxysilane, 140g dimethyldiethoxysilane, 2g trimethylsilanol, 157g dipropylsilanediol, add 1.5 g barium hydroxide, heated up to 60°C for condensation reaction for 5 hours, filtered after cooling, and removed low boilers in 2 hours under the condition of rising temperature / depressurization (60°C / 15mbar) to obtain epoxy siloxane polymer;

[0034] Take 100g of epoxy siloxane polymer, 0.050g of 4,4'-xylyliodonium hexafluorophosphate, and 20g of white carbon black, mix them evenly, and store them in the dark to obtain a one-component silicone potting glue;

[0035] Inject the silicone potting compound obtained above into the component to be encapsulated, and irradiate it with a 5.6KW ultraviolet lamp for 30s to complete the curing process.

[0036] According to the test method described in Example 1, the obtained silicone potting compound was tested, and the results are shown in Table 1.

Embodiment 3

[0038] Mix 10g of 3[(2,3)-glycidyloxy]propyldimethoxysilane, 200g of diphenyldimethoxysilane, 3g of trimethylsilanol, and 186.9g of diphenylsilanediol, and add 0.3g potassium hydroxide, heat up to 70°C for condensation reaction for 4 hours, cool to room temperature and filter through filter cloth, remove low boilers under temperature rise / depressurization (60°C / 15mbar) conditions for 2 hours to obtain epoxy siloxane Alkane polymer;

[0039] Take 100g of epoxy siloxane polymer, 0.025g of 4-(phenylthio)phenyldiphenylsulfonium hexafluorophosphate, and 40g of white carbon black, mix them evenly, and store them in the dark to obtain a one-component silicone potting Plastic closures;

[0040] Inject the silicone potting compound obtained above into the component to be encapsulated, and irradiate it with a 5.6KW ultraviolet lamp for 45 seconds to complete the curing process.

[0041] According to the test method described in Example 1, the obtained silicone potting compound was tes...

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Abstract

The invention belongs to the field of electronic polymer materials, and discloses a preparation method and an application of an organic silicon pouring sealant. The method comprises the following steps: mixing epoxy dialkoxy siloxane, dialkoxy siloxane, monohydric silanol and silicone glycol compounds, adding a catalyst, reacting for 2-6 hours at 50-100 DEG C and filtering out low-boiling-point substances so as to obtain an epoxy siloxane polymer; evenly mixing the epoxy siloxane polymer, a cationic light initiator and reinforced white carbon black so as to obtain the organic silicon pouring sealant. The pouring sealant can be cured under an ultraviolet lamp. According to the method, the materials are molded and cured by utilizing an efficient and environment-friendly ultraviolet crosslinking technology via a cationic polymerization reaction of epoxy groups led into organic silicon substrates, so that the problems of poisoning and environment pollution which are easily caused by a platinum catalyst and the like are solved; meanwhile, the cohesiveness and the dielectric property of the organic silicon pouring sealant are improved.

Description

technical field [0001] The invention belongs to the field of electronic polymer materials, and relates to a method for preparing silicone potting glue and its application and application. Background technique [0002] Silicone rubber has excellent temperature resistance, weather resistance, ultraviolet radiation resistance, dielectric properties, physiological inertness, low surface tension and low surface energy, and is very suitable for sealing and protecting packaging materials. Its main application areas are the bonding and sealing parts of the solar photovoltaic module frame and the backplane junction box, as well as the potting of the junction box, providing effective protection and thermal control for the application of photovoltaic products in outdoor environments. At present, the United States, Japan, and Germany have made a lot of progress in many processes such as the preparation technology of silicone rubber raw materials, catalyst selection, and product performa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J11/04C09J11/06C08G77/18C08G77/08
Inventor 李义涛刘新烁李伟黄明富安媛媛张兵兵游孟梦许才盛
Owner DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD