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Preparation method and application of porous organic silicon microsphere

A technology of organosilicon and microspheres, applied in applications, other household utensils, ceramic products, etc., can solve the problems of explosives, low light transmittance, flammable odor, etc., and achieve high light transmittance and haze, preparation method Simple, non-toxic preparation process

Pending Publication Date: 2021-02-19
JIANGSU YONGXIN MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the technological development of the LED lighting industry, higher light transmittance under the premise of meeting the haze (diffusion) has become a new pursuit, and the current problem with the micron-sized solid spheres of organic silicon is: the small particle size of 1.0-2.0 microns The product can meet the haze requirement at a low addition amount, but the light transmittance is low; the product with a large particle size of 5.0-15 microns can obtain high light transmittance, but it needs a high addition amount to meet the haze requirement. Resulting in higher costs; making it increasingly difficult to meet user needs
[0005] The patent "a microporous silicone microsphere and its preparation method and application" ZL201610877229.2 obtains microporous silicone microspheres by adding a foaming agent, but in the foaming agent used, no matter it is Nitro compounds, organic azo blowing agents, sulfonyl hydrazide blowing agents, azide blowing agents or alkane blowing agents all have serious defects such as toxicity, odor and / or flammability and explosion, bring danger to the production process
And the residue of these substances has greatly limited the scope of application of this type of microporous silicone microspheres.

Method used

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  • Preparation method and application of porous organic silicon microsphere
  • Preparation method and application of porous organic silicon microsphere
  • Preparation method and application of porous organic silicon microsphere

Examples

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Embodiment approach

[0026] According to a preferred embodiment of the present invention, the polysiloxane in the liquid silicone composition has a viscosity of 10 to 100,000 mm at 25°C 2 / s, preferably, the viscosity of the liquid silicone composition is 100-10000mm 2 / s, more preferably, the viscosity of the liquid silicone composition is 200-5000mm 2 / s.

[0027] The curing retarder is selected from one or more of alcohol derivatives with carbon-carbon triple bonds, enyne compounds, alkenyl-containing polysiloxanes, amide compounds and maleate compounds.

[0028] Preferably, the curing retardant is selected from 3-methyl-1-butyn-3-ol, 3,5-dimethyl-1-hexyn-3-ol, 3-phenyl-1-butyne -3-alcohol, 1-ethyne-1-cyclohexanol, 3-methyl-3-pentene-1-yne, 3,5-dimethyl-3-hexene-1-yne, polyvinyl poly Siloxane, N,N-diallyl formamide, N,N-diallyl benzamide, monoethyl maleate, monoallyl maleate, mono-2-ethyl maleate One or more of hexyl ester and diallyl maleate;

[0029] More preferably, the curing retarder ...

Embodiment 1

[0123] The viscosity at 25°C of 98 parts by weight is 1500mm 2 Vinyl content per s 0.6wt% vinyl silicone oil (V-1500 type), 2 parts by weight at 25°C, the viscosity is 350 mm 2 The hydrogen content of / s is 1.2wt% hydrogen-containing silicone oil (H-350 type), 2.0 parts by weight structure is (CH 2 =CH) 3 -SiO-(Si-(CH 3 )(CH=CH 2 )O) 8 -Si(CH=CH 2 ) 3 The curing retarder and 0.25 parts by weight of Platinum content 3000ppm Carl's catalyst are mixed homogeneously, then add 4.00 parts by weight of sorbitan monostearate (Span-60) of HLB value 4.7 and mix homogeneously, then add 30 parts by weight Parts of water and emulsified into water-in-oil emulsion with emulsification equipment.

[0124] 5.00 parts by weight of polyoxyethylene (20) sorbitan monostearate (Tween-60) with an HLB value of 14.9 are mixed with 100 parts by weight of water, the water-in-oil emulsion is added to the above mixed solution and mixed, and Emulsified into water-in-oil-in-water emulsion by emulsifi...

Embodiment 2

[0130] The viscosity of 90 parts by weight at 25°C is 2500mm 2 / s Vinyl silicone oil (type V-1500) with a vinyl content of 0.9wt%, 10 parts by weight at 25°C with a viscosity of 300mm 2 / s Hydrogen-containing silicone oil (H-350 type) with a hydrogen content of 0.3wt%, the structure is CH 2 =CH-Si(CH 3 ) 2 -O-(Si(CH 3 )(CH=CH 2 )O) 8 -Si(CH 3 ) 2 -CH=CH 2 4.2 parts by weight of the curing retarder and 0.19 parts by weight of the Karl's catalyst with a platinum content of 3000ppm are mixed uniformly, then 3.00 parts by weight of sorbitan monooleate (Span-80) with an HLB value of 4.3 are added and mixed uniformly, and then added 60 parts by weight of water and emulsified into water-in-oil emulsion with emulsification equipment.

[0131] Mix 6.00 parts by weight of polyoxyethylene lauryl ether (Brij35) with an HLB value of 16.9 and 80 parts by weight of water, add the water-in-oil emulsion to the mixture, and emulsify it into a water-in-oil-in-water emulsion through emul...

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Abstract

The invention provides a porous organic silicon microsphere and a preparation method and application thereof. The porous organic silicon microsphere is prepared from a liquid organic silicon composition, a curing retarder, a catalyst, an emulsifier and water, and the emulsifier comprises a hydrophilic emulsifier and an oleophylic emulsifier; the porous organic silicon microsphere has the advantages of no toxicity, no odor, high porosity, large aperture and the like, has high light transmittance and haze, and can be applied to various fields. Meanwhile, the preparation method of the porous organic silicon microsphere is simple, the preparation process is non-toxic, safe and environment-friendly, and large-scale industrial production can be carried out.

Description

technical field [0001] The invention relates to the field of organosilicon micron materials, in particular to a preparation method and application of porous organosilicon microspheres. Background technique [0002] When the light passes through the interface of transparent substances with different refractive indices, it will be deflected, resulting in refraction, scattering and other phenomena, so that the light can be diffused, and the point light source becomes a surface light source. The greater the difference in refractive index, the greater the light deflection angle and the higher the diffusion efficiency. The more times the light passes through the interface of materials with different refractive indices, the more times the light will be deflected, and the higher the diffusion efficiency will be. [0003] It is widely known by professionals in the industry that positive spherical transparent micron-sized particles can be used as light-diffusing particles. [0004] ...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05C08K5/5425C08J9/28C04B38/06
CPCC08J9/28C08J9/0061C08J9/0042C04B38/067C08J2383/07C08J2483/05C08J2201/0504
Inventor 姜文
Owner JIANGSU YONGXIN MATERIAL TECH CO LTD
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