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Silicone polymer and its preparation method, adhesive and its application

An organosilicon compound and adhesive technology, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problem of poor storage stability, application limitations, slow initial curing speed of single-component dealcoholization, etc. problems, to achieve the effects of easy storage, improved initial bonding strength, and shortened packaging waiting time

Active Publication Date: 2022-06-24
TONSAN ADHESIVES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a kind of organosilicon polymer and its preparation method, adhesive and its application, to solve the slow initial curing speed, poor storage stability and application limitations of the single-component dealcoholized adhesive in the prior art sexual problems

Method used

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  • Silicone polymer and its preparation method, adhesive and its application
  • Silicone polymer and its preparation method, adhesive and its application
  • Silicone polymer and its preparation method, adhesive and its application

Examples

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preparation example Construction

[0041] In another typical embodiment of the present application, a preparation method of the aforementioned organosilicon polymer is provided, characterized in that, the preparation method includes: step S1 , combining polysiloxane a with R 13 Si(R 7 ) 3-y (OR 8 ) y Carry out an addition reaction; or step S1', combine polysiloxane a with Si(R 7 ) 4-x (OR 8 ) x Condensation reaction is carried out under alkaline conditions to obtain the organosilicon polymer whose general structural formula is I; the general structural formula of above-mentioned polysiloxane a is as follows: where R 13 is H or vinyl, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , m, n, p, y, z are the same as R in the general formula I 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , m, n, p, y, z, in step S1, R 12 When H, R 4 is vinyl; R 12 When vinyl, R 4 is H; in step S1', R 4 is hydroxyl.

[0042]In order to facilitate those skilled in the art to synthesize the above-mentioned or...

Embodiment 1

[0057] Add 100 parts to a mixing vessel equipped with a stirring blade and the viscosity at 25°C is 3500mPa·s, the structural formula is (CH 2 =CH)[(CH 3 ) 2 SiO] 12 [(CH 2 =CH)(CH 3 )SiO] 2 Si(CH 3 ) 2 (CH=CH 2 ) of polydimethylsiloxane (vinyl content is 0.8wt%), 9 parts of trimethoxysilylethylenetetramethyldisiloxane, 0.01 part of platinum mass fraction of 0.7% platinum vinylsiloxane The oxane complex was stirred at 40 °C for 3 h to obtain the organosilicon polymer 1.

[0058] Put 100 parts of α,ω-dihydroxy polydimethylsiloxane with a viscosity of 20000mpa·s at 25°C, 10 parts of dimethicone with a viscosity of 500mpa·s, and 100 parts of light calcium carbonate into the planetary agitator In the process, start stirring and dispersing, dehydrate at 120-140°C and -0.09--0.1MPa vacuum condition for 2-4 hours, and then cool down to below 50°C. Add 3.5 parts of methyltrimethoxysilane, add 3 parts of the above-mentioned silicone polymer 1, 3 parts of bis(ethyl acetoacetat...

Embodiment 2

[0060] Add 100 parts to a mixing vessel equipped with a stirring blade, the viscosity at 25°C is 300mPa·s, and the structural formula is (H)[(CH 3 ) 2 SiO] 10 [(CH 3 )(H)SiO] 4 Si(CH 3 ) 2 (H) polydimethylsiloxane (hydrogen content of 0.1 wt%), 16 parts of vinyltrimethoxysilane, 0.01 part of platinum-vinylsiloxane complex with a platinum mass fraction of 0.7%, in Stirring at 30-40°C for 2-3 h to obtain silicone polymer 2.

[0061] 100 parts of trimethoxysilane-terminated polydimethylsiloxane with a viscosity of 50,000 mpa·s at 25°C, 20 parts of dimethicone with a viscosity of 100 mpa·s, 80 parts of light calcium carbonate, and 80 parts of heavy calcium carbonate Put 40 parts into the planetary mixer, start stirring and dispersing, dehydrate at 120~140℃, -0.09~-0.1MPa vacuum condition for 2~4 hours, and then cool down to below 50℃. Add 3.5 parts of methyltrimethoxysilane, 1.5 parts of the above-mentioned organosilicon polymer 2, 3 parts of isopropyl titanate modified wit...

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Abstract

The invention provides an organosilicon polymer, a preparation method thereof, an adhesive and an application thereof. The organosilicon polymer has the following structural formula I: R 1 , R 2 , R 3 , R 5 , R 6 , R 7 each independently selected from substituted or unsubstituted C 1 ~C 6 Any one of the alkyl groups, R 4 Any one selected from H, vinyl, hydroxyl, R 8 selected from substituted or unsubstituted C 1 ~C 6 Alkyl group, ‑Si(R 10 )(R 11 )‑(CH 2 ) z ‑Si‑(OR 12 ) 3 Any one of them, where R 10 , R 11 , R 12 each independently selected from substituted or unsubstituted C 1 ~C 6 the alkyl group, R 9 is ‑O‑ or ‑CH 2 -CH 2 ‑; m, n, p, x, y, z are integers, and 10≤m≤20, 1≤n≤10, 1≤y≤3, 0≤z≤4, 0≤p≤n. This silicone polymer increases the initial cure speed of one-component dealcoholized adhesives.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular, to an organic silicon polymer and a preparation method thereof, an adhesive and an application thereof. Background technique [0002] After the liquid silicone rubber is cured, it can be maintained for more than 25 years without cracking, brittleness and high strength in harsh environments such as sun exposure, rain and snow, and seasonal changes. Therefore, liquid silicone rubber is used for solar photovoltaics. The best material for sealing and bonding battery components. According to the packaging form of liquid silicone rubber products, it can be divided into two categories: one-component and two-component. The polysiloxane, crosslinking agent, filler, catalyst and other additives are uniformly mixed under the condition of isolating moisture and then packaged to obtain a one-component liquid silicone rubber. Rubber sealants cure by cross-linking by exposure to moistur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/20C08G77/16C08G77/12C09J183/04C09J11/04C09J11/06C09J11/08
CPCC08G77/20C08G77/16C08G77/12C09J183/04C09J11/04C09J11/06C09J11/08C08L2205/025C08L2205/03C08K2003/265C08L83/04C08K13/02C08K3/26C08K5/5419C08K5/5435C08K5/5425C08K5/544
Inventor 王瑶陈永全孙应发
Owner TONSAN ADHESIVES INC
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