Addition type photocurable silicone rubber composition

A silicone rubber and light curing technology, applied in the field of polymer chemical materials, to achieve the effect of easy use and fast curing speed

Active Publication Date: 2020-01-31
CHENGDU GUIBAO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the traditional organosilicon-based polymer is Si-CH=CH 2 and Si-H are photosensitive groups, and the photocurable silicone material of platinum catalyst as initiator has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 70 parts by mass of methyl vinyl polysiloxane with a viscosity of 50,000 mPa·s, 10 parts by mass of MQ silicone resin with a molecular weight of 8600, 20 parts by mass of methyl-terminated hydrogen-containing silicone oil with a viscosity of 350 mPa·s, and a viscosity of 20 mPa·s 5 parts by mass of methyl polyhydrogen silicone oil, 0.8 parts by mass of (trimethyl) cyclopentadiene platinum, and 0.03 parts by mass of ethynyl cyclohexanol, mix uniformly and apply it to a thickness of 0.1mm, and place it under ultraviolet light with a wavelength of 250nm The next 10s solidify.

Embodiment 2

[0054] Viscosity is 30 mass parts of methylphenyl vinyl polysiloxanes of 20000mPa·s, molecular weight is 10 mass parts of vinyl phenyl MQ resins of 7500, and molecular weight is 10 mass parts of vinyl phenyl MDT silicone resins of 3200, and molecular weight is 40 mass parts of vinylphenyl DT silicone resin of 2500, viscosity is 4 mass parts of methylphenyl hydrogen-containing silicone oil of 50mPa s, 6 mass parts of methylphenyl hydrogen-containing silicone resin, (trimethyl) (naphthylmethyl) Cyclopentadienyl) Platinum 0.5 parts by mass, dimethyl-[(trimethylsilyl) methyl]-naphthylcyclopentadienyl platinum 0.5 parts by mass, 2-methyl-3-butyne 0.05 parts by mass of -2-alcohol, mixed evenly, coated to a thickness of 0.1mm, placed under ultraviolet light with a wavelength of 400nm for curing for 45s.

Embodiment 3

[0056] 50 parts by mass of methyl vinyl polysiloxane with a viscosity of 300 mPa·s, 10 parts by mass of vinyl MQ silicone resin with a molecular weight of 7600, 10 parts by mass of vinyl MDT silicone resin with a molecular weight of 6400, and vinyl polysiloxane with a molecular weight of 1500 30 parts by mass of DT silicone resin, 10 parts by mass of methyl-terminal hydrogen-containing silicone oil with a viscosity of 240mPa·s, 10 parts by mass of methyl-hydrogen-containing silicone resin, (trimethyl)(1-methyl-1,5-cyclooctyl 0.5 parts by mass of diene) platinum, 0.2 parts by mass of (trimethyl) (naphthylmethylcyclopentadienyl) platinum, 0.02 parts by mass of ethynyl cyclohexanol, after mixing evenly, potting and sealing in a 0.1mm container , placed under ultraviolet light with a wavelength of 300nm to cure for 80s.

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PUM

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Abstract

The invention discloses an addition type photocuring organic silicon rubber composition. The addition type photocuring organic silicon rubber composition is prepared from, by mass, 30-100 parts of vinyl containing polysiloxane, 0-70 parts of filler, 5-30 parts of cross-linking agent, 0.1-1 part of catalyst with optical activity and 0.01-0.1 part of inhibitor. Photocuring organic silicon rubber is compared with other photocuring organic silicon materials, organosilicon polymer includes methyl vinyl polysiloxane, methyl vinyl organic silicone resin and hydrogen containing silicone oil, the photosensitive perssad of photoresponse is Si-CH=CH2 and Si-H, the prepared organic silicon rubber can be widely used for the fields of electronic component coating, embedment protection and the like, and curing time is short.

Description

technical field [0001] The invention belongs to the technical field of macromolecular chemical materials, and in particular relates to an addition type photocurable silicone rubber composition. Background technique [0002] UV curing technology has been developed and applied rapidly in recent years, but the acrylate reactive diluents commonly used in traditional oil-based curing systems have a strong stimulating effect on human skin and eyes, affecting the health of operators; in addition, many Reactive diluents are difficult to completely react during ultraviolet irradiation, and residual monomers directly affect the long-term performance of cured films and limit their application in the food hygiene industry. [0003] The particularity of the silicone polymer structure endows it with many excellent properties: breathability, flexibility, weather resistance, water resistance and good physiological inertia. Light curing technology has the advantages of fast curing, low energ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/05C08K3/36
Inventor 熊婷雷震李步春王有治
Owner CHENGDU GUIBAO SCI & TECH
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