Silicone sealant for daylighting board and preparation method thereof

A silicone sealant and lighting board technology, applied in chemical instruments and methods, adhesives, adhesive additives, etc., can solve the problems of easy pollution, poor performance of silicone sealants, etc., achieve good compatibility and improve bonding Performance, the effect of large elongation

Inactive Publication Date: 2015-02-18
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a non-polluting, non-corrosive neutral sealant to solve the technical problems of the above-mentioned acidic sealant corroding the base material and the poor performance and easy pollution of the silicone sealant for lighting panels prepared by inactive plasticizers. Silicone sealant for daylighting panels with high elongation, low modulus, simple preparation, and large-scale production and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A silicone sealant for daylighting panels is prepared by a method comprising the following steps:

[0033] (1) Calculated by weight ratio, the ratio of 107 silicone rubber: reactive reinforcing agent: active filler is 100:3:3, and 107 silicone rubber, reactive reinforcing agent, and active filler are added to the vacuum kneader in sequence , kneading at room temperature for 10 minutes, then stirring and heating to 150°C, heat preservation and dehydration for 2 hours, cooling to room temperature, and discharging to obtain the base material;

[0034] The 107 silicone rubber is α,ω-dihydroxypolydimethylsiloxane with a viscosity of 50000mPa.s provided by Shanghai Huasi Chemical New Material Co., Ltd.;

[0035] The reactive reinforcing agent is DTHMQ-11 type MQ resin provided by Guangzhou Delta Organic Silicon Technology Development Co., Ltd.;

[0036] The active filler is ultrafine active calcium carbonate, a product of Hunan Jinxin Chemical Co., Ltd., the surface is treat...

Embodiment 2

[0047]A silicone sealant for daylighting panels is prepared by a method comprising the following steps:

[0048] (1) Calculated by weight ratio, the ratio of 107 silicone rubber: reactive reinforcing agent: active filler is 120:10:10, and 107 silicone rubber, reactive reinforcing agent, and active filler are added to the vacuum kneader in sequence , kneading at room temperature for 30 minutes, then stirring and heating to 150°C, heat preservation and dehydration for 4 hours, cooling to room temperature, and discharging to obtain the base material;

[0049] The 107 silicone rubber is α,ω-dihydroxypolydimethylsiloxane with a viscosity of 100000mPa.s provided by Shanghai Huasi Chemical New Material Co., Ltd.;

[0050] The reactive reinforcing agent is DTHMQ-11 type MQ resin provided by Guangzhou Delta Organic Silicon Technology Development Co., Ltd.;

[0051] The active filler is ultrafine active calcium carbonate, a product of Hunan Jinxin Chemical Co., Ltd., the surface is tre...

Embodiment 3

[0062] A silicone sealant for daylighting panels is prepared by a method comprising the following steps:

[0063] (1) Calculated by weight ratio, the ratio of 107 silicone rubber: reactive reinforcing agent: active filler is 110:5:7, and 107 silicone rubber, reactive reinforcing agent, and active filler are added to the vacuum kneader in sequence , kneading at room temperature for 20 minutes, then stirring and heating to 150°C, heat preservation and dehydration for 3 hours, cooling to room temperature, and discharging to obtain the base material;

[0064] The 107 silicone rubber is α,ω-dihydroxypolydimethylsiloxane with a viscosity of 100000mPa.s provided by Shanghai Huasi Chemical New Material Co., Ltd.;

[0065] The reactive reinforcing agent is DTHMQ-11 type MQ resin provided by Guangzhou Delta Organic Silicon Technology Development Co., Ltd.;

[0066] The active filler is ultrafine active calcium carbonate, a product of Hunan Jinxin Chemical Co., Ltd., the surface is trea...

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Abstract

The invention discloses a silicone sealant for a daylighting board and a preparation method thereof. The preparation method comprises the following steps: adding the silicone rubber 107, the reactive reinforcing agent and the active filler into a vacuum kneading machine in sequence according to the fact that the weight ratio of silicone rubber 107 to a reactive reinforcing agent to an active filler is (100-120): (3-10): (3-10), kneading for 10-30 minutes at a room temperature, then stirring and heating to 150 DEG C, carrying out heat preservation and dehydrating for 2-4 hours, cooling to a room temperature and then discharging to obtain a base material; adding the base material into a planetary stirrer, stirring and vacuumizing for 1 hour, then adding a cross-linking agent, a tackifier, a plasticizer, a flame retardant and a catalyst in sequence according to the fact that the weight ratio of the base material to the cross-linking agent to the tackifier to the plasticizer to the flame retardant to the catalyst is 100: (3-15): (1-10): (5-25): (30-50): (0.1-1), uniformly stirring under vacuum and discharging to obtain the silicone sealant with high elongation rate, low modulus and high light transmittance for the daylighting board.

Description

technical field [0001] The invention relates to a silicone sealant for daylighting panels and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] In the construction industry, daylighting panels are more and more widely used due to their characteristics of good lighting, beautiful appearance and energy saving. The daylighting panel needs to be sealed with silicone sealant during use. The sealants used in daylighting panels are required to have low modulus and high displacement capacity to cope with large displacements during use. Chinese patent CN201010557084.0 discloses a high-performance acidic transparent silicone structural sealant that can be used for daylighting panels. The sealant contains acid components and is corrosive to steel, cement, stone, etc., so its application is limited. However, the weather-resistant adhesive sealants for daylighting panels commonly seen in the market are manufactured with a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J11/06C09J11/04C09J11/08C09K3/10
Inventor 张英强林茂吴如梦张超张轩凝吴蓁
Owner SHANGHAI INST OF TECH
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