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Organosilicon polymer and preparation method thereof, and adhesive and application thereof

A silicone and polymer technology, applied in the field of silicone polymers and their preparation, can solve the problems of slow initial curing speed, poor storage stability, and application limitations of single-component dealcoholized adhesives, and achieve shortened packaging waiting time, Ease of storage and the effect of improving the initial bonding strength

Active Publication Date: 2020-09-04
TONSAN ADHESIVES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Organosilicon polymer and preparation method thereof, and adhesive and application thereof
  • Organosilicon polymer and preparation method thereof, and adhesive and application thereof
  • Organosilicon polymer and preparation method thereof, and adhesive and application thereof

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, which is 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 addition reaction; Or step S1 ', polysiloxane a and Si(R 7 ) 4-x (OR 8 ) x Carry out condensation reaction under alkaline condition, obtain the organosilicon polymer of general structural formula I; The structural general formula of above-mentioned polysiloxane a is as follows: Among them, 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 For H, R 4 is vinyl; R 12 For vinyl, R 4 is H; in step S1', R 4 For hydroxyl.

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

Embodiment 1

[0057] When adding 100 parts into a mixing container equipped with stirring blades at 25°C, the viscosity is 3500mPa·s, and 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 vinyl silicon with a mass fraction of 0.7% The oxane complex was stirred at 40°C for 3h to obtain the organosilicon polymer 1.

[0058] Put 100 parts of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 20000mpa·s at 25°C, 10 parts of simethicone oil with a viscosity of 500mpa·s, and 100 parts of light calcium carbonate into the planetary mixer In the process, start stirring and dispersing, dehydrate at 120~140°C, -0.09~-0.1MPa vacuum condition for 2~4 hours, then cool down to below 50°C. Add 3.5 parts of methyltrimethoxysilane, add 3 parts of the above silicone polymer 1, 3 parts of diisopropyl di(acetoacetate)...

Embodiment 2

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

[0061] 100 parts of trimethoxysilane-terminated polydimethylsiloxane with a viscosity of 50000mpa·s at 25°C, 20 parts of simethicone oil with a viscosity of 100mpa·s, 80 parts of light calcium carbonate, 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, then cool down to below 50℃. Add 3.5 parts of methyltrimethoxysilane, 1.5 parts of the above silicone polymer 2, 3 parts of isopropyl titanate modified with ethyl acetoacetate, and...

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Abstract

The invention provides an organosilicon polymer and a preparation method thereof, and an adhesive and application thereof. The organosilicon polymer has a general structural formula I as shown in thespecification, wherein R1, R2, R3, R5, R6 and R7 in the formula I are respectively and independently selected from any one of substituted or unsubstituted C1-C6 alkyl groups; R4 is selected from any one of H, a vinyl group and a hydroxyl group; R8 is selected from any one of substituted or non-substituted C1-C6 alkyl groups and -Si(R10)(R11)-(CH2)z-Si-(OR12)3, and R10, R11 and R12 are independently selected from substituted or non-substituted C1-C6 alkyl; R9 is -O- or-CH2-CH2-; and m, n, p, x, y and z are integers, m is no less than 10 and no more than 20, n is no less than 1 and no more than10, y is no less than 1 and no more than 3, z is no less than 0 and no more than 4, and p is no less than 0 and no more than n. The organosilicon polymer can improve the initial curing speed of the single-component dealcoholized adhesive.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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