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A kind of one-component addition type organosilicon and preparation method thereof

A silicone and addition-type technology, applied in the field of one-component addition-type silicone and its preparation, can solve the problems of toxicity, short storage time, wasteful equipment cleaning, etc., and achieve the effect of improving stability

Active Publication Date: 2018-06-29
HANGZHOU BAOMING NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two-component process will bring inconvenience to the construction: accurate measurement by the operator is required; mixing equipment and degassing equipment are required (especially more challenging for high-viscosity systems); if the mixed materials cannot be used in time, they will solidify and cause Waste and equipment cleaning is not easy
[0003] The disadvantages of the one-component addition type silicone in the prior art are: a large amount of stabilizer (such as acetylenic alcohol) needs to be added; the acetylenic alcohol will volatilize during the curing process, which will increase the volume shrinkage of the product and affect the smoothness of the surface of the product; Generally speaking, acetylenic alcohol compounds have certain toxicity, which limits their application in some fields; low temperature storage is required, the demand for energy is large, and it is inconvenient for transportation and storage; the storage time is short

Method used

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  • A kind of one-component addition type organosilicon and preparation method thereof
  • A kind of one-component addition type organosilicon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1.1 Synthesis of one-component addition type silicone resin

[0030] At room temperature, successively add methylhydrogensiloxane-octylmethylsiloxane copolymer DMS-H25 100.0g, triallyl isocyanurate TAIC 2.5g into the three-necked flask; after stirring evenly, add Platinum-methylvinylcyclosiloxane complex SIP6832.223.4 mg, and continue to stir, heated to 80 ° C for 2 hours, infrared detection, detection of silicon-hydrogen bond disappear, lower the temperature to room temperature to stop the reaction.

[0031] Wherein the content of platinum is 5ppm, [H] / [TAIC]=1. Here, [H] / [TAIC]=1 means that the molar ratio of silicon-hydrogen bonds to TAIC in the hydrogen-terminated polydimethylsiloxane is 1.

[0032] 1.2 Performance testing

[0033] Mix 102.5g of the one-component addition-type silicone synthesized in 1.1 and methylhydrogensiloxane-dimethylsiloxane copolymer HMS3012.9g evenly, and wait for the viscosity test and curing speed test.

[0034] Wherein the content of p...

Embodiment 2

[0036] 2.1 Synthesis of one-component addition type silicone resin

[0037] At room temperature, sequentially add methylhydrogensiloxane-octylmethylsiloxane copolymer HAM-301100.0g, triallyl isocyanurate TAIC 57.5g into the three-necked flask; after stirring evenly, add platinum - Methylvinylcyclosiloxane complex SIP683 2.235.0mg, and continue to stir, heated to 80 ° C for 2 hours, infrared detection, detection of silicon-hydrogen bond disappear, lower the temperature to room temperature to stop the reaction.

[0038] Wherein the content of platinum is 5ppm, [H] / [TAIC]=1. Here, [H] / [TAIC]=1 means that the molar ratio of silicon-hydrogen bond to TAIC in the methylhydrogensiloxane-octylmethylsiloxane copolymer HAM-301 is 1.

[0039] 2.2 Performance testing

[0040] 157.5g of one-component addition silicone synthesized in 2.1, 28.4g of phenyl-tris(dimethylsiloxy)silane XL-245PT and 2.26.3mg of platinum-methylvinylcyclosiloxane complex SIP683 Mix well and wait for viscosity tes...

Embodiment 3

[0043] 3.1 Synthesis of one-component addition type silicone resin

[0044] At room temperature, sequentially add methylhydrogensiloxane-phenylmethylsiloxane copolymer HPM-502 100.0g, triallyl isocyanurate TAIC 157.5g into the three-necked flask; after stirring evenly, add platinum - Methylvinyl cyclosiloxane complex SIP683 2.257.2mg, and continue to stir, heated to 80 ° C for 2 hours, infrared detection, detection of silicon-hydrogen bond disappear, lower the temperature to room temperature to stop the reaction.

[0045] Wherein the content of platinum is 5ppm, [H] / [TAIC]=1. Here, [H] / [TAIC]=1 means that the molar ratio of silicon-hydrogen bond to TAIC in the methylhydrogensiloxane-phenylmethylsiloxane copolymer HPM-502 is 1.

[0046] 3.2 Performance testing

[0047] 157.5g of one-component addition silicone synthesized in 3.1, 77.8g of phenyl-tris(dimethylsiloxy)silane XL-245PT and platinum-methylvinylcyclosiloxane complex SIP6832.217.3mg Mix well and wait for viscosity t...

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Abstract

The invention discloses a single-component addition type organosilicon and a preparation method thereof. The single-component addition type organosilicon is obtained through an addition reaction on silicon-hydrogen bond-containing organosilicon and triallyl triisocyanate under the action of a catalyst. The structural formula of the single-component addition type organosilicon is shown in the specification; and in the formula, R is (R1)n(R2O)3-nSi, wherein R1 and R2 are same or different organic groups, for example, R1 and R2 can respectively be C1-20-containing linear / branched alkyl groups or alkenyl groups, or halides thereof. The single-component addition type organosilicon, provided by the invention, can be stably stored without adding a stabilizer like alkynol, and can be fast solidified under heating.

Description

technical field [0001] The invention relates to the technical field of organic silicon processing, in particular to a one-component addition type organic silicon and a preparation method thereof. Background technique [0002] Addition-type silicone is a cross-linking reaction through the addition of silicon-hydrogen bonds and carbon-carbon unsaturated bonds (usually vinyl) under the catalysis of noble metal catalysts (usually platinum complexes). The advantages of addition-type silicone are: low shrinkage rate is very low; no by-products are released during the crosslinking process; deep curing is possible, etc. Addition-type silicone is difficult to prepare one-component (silicon hydrogen and vinyl will react even at room temperature). However, the two-component process will bring inconvenience to the construction: accurate measurement by the operator is required; mixing equipment and degassing equipment are required (especially more challenging for high-viscosity systems)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/388
CPCC08G77/388
Inventor 李志明林江滨
Owner HANGZHOU BAOMING NEW MATERIAL TECH CO LTD