CN115895274A - High-reflection organic silicon composite material composition and preparation method thereof - Google Patents
High-reflection organic silicon composite material composition and preparation method thereof Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 79
- 239000000203 mixture Substances 0.000 title claims abstract description 62
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 33
- 239000010703 silicon Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 84
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 84
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229920002545 silicone oil Polymers 0.000 claims abstract description 57
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 39
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229920002050 silicone resin Polymers 0.000 claims abstract description 35
- 239000003054 catalyst Substances 0.000 claims abstract description 32
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 31
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 21
- 239000001257 hydrogen Substances 0.000 claims abstract description 21
- 239000003112 inhibitor Substances 0.000 claims abstract description 20
- 238000002310 reflectometry Methods 0.000 claims abstract description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 41
- 238000002156 mixing Methods 0.000 claims description 12
- 238000004513 sizing Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical group [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 10
- -1 silanized alkynol Chemical compound 0.000 claims description 9
- 239000002318 adhesion promoter Substances 0.000 claims description 6
- 239000000084 colloidal system Substances 0.000 claims description 6
- 238000004132 cross linking Methods 0.000 claims description 6
- 125000003700 epoxy group Chemical group 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 6
- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical compound C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 claims description 3
- JQZGUQIEPRIDMR-UHFFFAOYSA-N 3-methylbut-1-yn-1-ol Chemical compound CC(C)C#CO JQZGUQIEPRIDMR-UHFFFAOYSA-N 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- IEPRKVQEAMIZSS-UHFFFAOYSA-N Di-Et ester-Fumaric acid Natural products CCOC(=O)C=CC(=O)OCC IEPRKVQEAMIZSS-UHFFFAOYSA-N 0.000 claims description 2
- IEPRKVQEAMIZSS-WAYWQWQTSA-N Diethyl maleate Chemical compound CCOC(=O)\C=C/C(=O)OCC IEPRKVQEAMIZSS-WAYWQWQTSA-N 0.000 claims description 2
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- XNMQEEKYCVKGBD-UHFFFAOYSA-N dimethylacetylene Natural products CC#CC XNMQEEKYCVKGBD-UHFFFAOYSA-N 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 4
- CFOAUMXQOCBWNJ-UHFFFAOYSA-N [B].[Si] Chemical group [B].[Si] CFOAUMXQOCBWNJ-UHFFFAOYSA-N 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 238000012216 screening Methods 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910018626 Al(OH) Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JUWSSMXCCAMYGX-UHFFFAOYSA-N gold platinum Chemical compound [Pt].[Au] JUWSSMXCCAMYGX-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- IBXNCJKFFQIKKY-UHFFFAOYSA-N n-propylacetylene Natural products CCCC#C IBXNCJKFFQIKKY-UHFFFAOYSA-N 0.000 description 1
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- 229910002027 silica gel Inorganic materials 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
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Abstract
The invention discloses a high-reflection organic silicon composite material composition and a preparation method thereof, belonging to the technical field of organic silicon chemical synthesis composite materials, and comprising a component A and a component B, wherein the component A comprises vinyl silicone resin, vinyl silicone oil, modified nano titanium dioxide powder and a platinum catalyst, the component B comprises vinyl silicone resin, hydrogen-containing silicone oil, vinyl silicone oil, a tackifier and an inhibitor, the reflectivity of the prepared high-reflection organic silicon composite material composition reaches 92-99%, and the material can eliminate stray light around and does not influence brightness or improve brightness.
Description
Technical Field
The invention relates to the technical field of organic silicon chemical synthesis composite materials, in particular to a high-reflection organic silicon composite material composition and a preparation method thereof.
Background
With the continuous development of LED technology, the application of LED light source has penetrated into the wider applications of car light, backlight, display, identification, etc., and thus, higher requirements are put forward on the LED light source technology. The LED light source has the advantages of accurate light emitting angle, consistent light quality, long-term weather resistance stability and higher light emitting efficiency, and is a plurality of indexes for continuous innovation of LED technology. For the traditional LED package, the chip is usually encapsulated with organic silica gel to make the LED light source, but due to the limitation of the structural characteristics of the LED chip, the light coming out finally appears with stray light around or with obvious light rings. Therefore, it is necessary to develop a material capable of eliminating ambient stray light without affecting brightness or improving brightness.
Disclosure of Invention
The invention discloses a high-reflection organic silicon composite material composition and a preparation method thereof, the high-reflection organic silicon composite material has the characteristic of high covering power, can effectively block the interference of photometry, and can effectively integrate the surrounding stray light and the reflected light due to the characteristic of high reflectivity so as to achieve consistent light quality and higher light-emitting efficiency, and the content of the invention is as follows:
the invention aims to provide a high-reflection organic silicon composite material composition, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: (1-2);
the component A comprises 30-40 parts by weight of vinyl silicone resin, 0-30 parts by weight of vinyl silicone oil, 40-600 parts by weight of modified nano titanium dioxide powder and 0.5-1.0 part by weight of platinum catalyst;
the component B comprises, by mass, 20-40 parts of vinyl silicone resin, 10-20 parts of hydrogen-containing silicone oil, 50-60 parts of vinyl silicone oil, 0.1-2.0 parts of tackifier and 0.2-0.5 part of inhibitor.
In some embodiments of the present invention, the refractive index of the vinyl silicone resin in the component a and the refractive index of the vinyl silicone resin in the component B of the highly reflective silicone composite composition are both 1.40 to 1.42, the vinyl content is both 1.31 to 1.95wt%, and the viscosity is both 6000 to 80000cp.
In some embodiments of the present invention, the refractive index of the vinyl silicone oil in the component a and the refractive index of the vinyl silicone oil in the component B of the highly reflective silicone composite composition are both 1.40 to 1.42, the vinyl content is both 0.1 to 0.4wt%, and the viscosity is both 100 to 500cp.
In some embodiments of the present invention, the hydrogen-containing silicone oil in the component B of the above-mentioned highly reflective silicone composite composition has a refractive index of 1.40 to 1.42, a hydrogen-based content of 0.10 to 1.10wt%, and a viscosity of 10 to 100cp.
In some embodiments of the present invention, the modified nano titanium dioxide powder in the component A of the highly reflective organosilicon composite composition has an average particle diameter of 0.1-0.6 μm, and the surface of the modified nano titanium dioxide powder is formed by SiO 2 ，Al(OH) 3 The treatment improves the UV resistance and durability of the modified nano titanium dioxide powder, and the modified nano titanium dioxide powder also adopts organic alkane to reduce the surface tension and improve the wettability of the modified nano titanium dioxide powder.
In some embodiments of the present invention, the platinum-gold catalyst in the component a of the above-mentioned one highly reflective silicone composite composition is at least one of a tetrahydrofuran-coordinated platinum catalyst, a methyl vinyl siloxane-coordinated platinum catalyst, a diethyl phthalate-coordinated platinum catalyst, and an aminohydroxypolysiloxane-coordinated platinum catalyst.
In some embodiments of the present invention, the inhibitor in the component B of the highly reflective silicone composite composition is at least one of ethynylcyclohexanol, silanized alkynol, methylbutynol, propylethynylol, dimethylacetylene alcohol, and diethyl maleate.
In some embodiments of the present invention, the adhesion promoter in the component B of the above-mentioned one highly reflective silicone composite composition is a siloxane oligomer containing an epoxy group or a hydroxyl-reactive group.
The second purpose of the invention is to provide a preparation method of a high-reflection organic silicon composite material, which is technically characterized by comprising the following steps:
step one, dehumidifying modified nano titanium dioxide powder: dehumidifying the modified nano titanium dioxide powder by adopting heating equipment to ensure that the surface of the powder absorbs moisture to influence the viscosity-thixotropy index of the colloid;
step two, preparation of the component A: sequentially putting vinyl silicone resin, vinyl silicone oil, a platinum catalyst and the dehumidified modified nano titanium dioxide powder into a stirrer to form a mixed sizing material A, controlling the temperature of the mixed sizing material A to 50-70 ℃, shearing at a high rotating speed of 30-60min, and sieving with a sieve with an aperture smaller than 100 meshes to obtain a component A;
step three, preparing the component B: sequentially adding vinyl silicone resin, hydrogen-containing silicone oil, vinyl silicone oil, a tackifier and an inhibitor into a stirring kettle to form a mixed rubber material B, and mixing the mixed rubber material B at a low speed to obtain a component B with the viscosity of less than 2000 cp;
step four, preparing the high-reflection organic silicon composite material: and (3) fully stirring the component A obtained in the step (I) and the component B obtained in the step (III), putting the components into a 70-90kPa vacuum mixer, fully mixing at the highest speed of 800rpm to obtain a mixed rubber material C, and then adding the mixed rubber material C at the temperature of 150-200 ℃ for 2-3h for curing and crosslinking to obtain the high-reflection organic silicon composite material.
Compared with the prior art, the high-reflection organic silicon composite material composition and the preparation method thereof have the following beneficial effects:
the high-reflection organic silicon composite material composition comprises a component A and a component B, wherein the component A comprises vinyl silicone resin, vinyl silicone oil, modified nano titanium dioxide powder and a platinum catalyst, the component B comprises vinyl silicone resin, hydrogen-containing silicone oil, vinyl silicone oil, a tackifier and an inhibitor, the reflectivity of the prepared high-reflection organic silicon composite material composition reaches 92-99%, and the material can eliminate stray light around and does not influence brightness or improve brightness.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The highly reflective silicone composite composition of this example according to the formulation of table 1 includes:
91kg of component A: comprises 30kg of vinyl silicone resin, 20kg of vinyl silicone oil, 60kg of modified nano titanium dioxide powder and 1.0kg of platinum catalyst;
101.5kg of component B: comprises 40kg of vinyl silicone resin, 10kg of hydrogen-containing silicone oil, 50kg of vinyl silicone oil, 1.0kg of tackifier and 0.5kg of inhibitor.
Preferably, the refractive index of the vinyl silicone resin in the component A and the component B of the high-reflection silicone composite composition of the embodiment is 1.41, the vinyl content is 1.63wt%, and the viscosity is 43000cp.
Preferably, the refractive index of the vinyl silicone oil in the component A and the refractive index of the vinyl silicone oil in the component B of the highly reflective silicone composite composition in the embodiment are both 1.41, the vinyl content is both 0.25wt%, and the viscosity is both 300cp.
Preferably, the hydrogen-containing silicone oil in the component B of the highly reflective silicone composite composition of this embodiment has a refractive index of 1.41, a hydrogen radical content of 0.60wt%, and a viscosity of 55cp.
Preferably, the modified nano titanium dioxide powder in the component A of the high-reflection organosilicon composite composition of the embodiment has an average particle size of 0.35 μm.
Preferably, the platinum catalyst in the component a of the highly reflective silicone composite composition of the present embodiment is a platinum catalyst coordinated with tetrahydrofuran.
Preferably, the inhibitor in the component B of the highly reflective silicone composite composition of the present embodiment is ethynylcyclohexanol.
Preferably, the adhesion promoter in the component B of the highly reflective silicone composite composition of the present embodiment is a siloxane oligomer containing an epoxy group or a hydroxyl-reactive group, a siloxane of a silicon boron structure.
According to the formula, the preparation method of the high-reflection organic silicon composite material comprises the following steps:
step one, dehumidifying modified nano titanium dioxide powder: dehumidifying the modified nano titanium dioxide powder by adopting heating equipment to ensure that the surface of the powder absorbs moisture to influence the viscosity-thixotropy index of the colloid;
step two, preparing the component A: sequentially putting vinyl silicone resin, vinyl silicone oil, a platinum catalyst and the dehumidified modified nano titanium dioxide powder into a stirrer to form a mixed sizing material A, controlling the temperature of the mixed sizing material A to 60 ℃, shearing at a high rotating speed for 45min, and screening through a filter screen with a pore diameter of less than 100 meshes to obtain a component A;
step three, preparing the component B: sequentially adding vinyl silicone resin, hydrogen-containing silicone oil, vinyl silicone oil, a tackifier and an inhibitor into a stirring kettle to form a mixed rubber material B, and mixing the mixed rubber material B at a low speed to obtain a component B with the viscosity of less than 2000 cp;
step four, preparing the high-reflection organic silicon composite material: and (3) fully stirring the component A obtained in the step (III) and the component B obtained in the step (III), putting the mixture into a 80kPa vacuum mixer, fully mixing at the highest speed of 800rpm to obtain a mixed rubber material C, and then adding the mixed rubber material C at 175 ℃ for 2.5h for curing and crosslinking to obtain the high-reflection organic silicon composite material.
Example 2
The highly reflective silicone composite composition of this example according to the formulation of table 1 includes:
101kg of component A: comprises 35kg of vinyl silicone resin, 15kg of vinyl silicone oil, 50kg of modified nano titanium dioxide powder and 1.0kg of platinum catalyst;
102kg of component B: comprises 30kg of vinyl silicone resin, 15kg of hydrogen-containing silicone oil, 55kg of vinyl silicone oil, 1.5kg of tackifier and 0.5kg of inhibitor.
Preferably, the refractive index of the vinyl silicone resin in the component A and the component B of the high-reflection organosilicon composite composition of the embodiment is 1.40, the vinyl content is 1.31wt%, and the viscosity is 6000cp.
Preferably, the refractive index of the vinyl silicone oil in the component A and the component B of the highly reflective silicone composite composition of the embodiment is 1.40, the vinyl content is 0.1wt%, and the viscosity is 100cp.
Preferably, the hydrogen-containing silicone oil in the component B of the highly reflective silicone composite composition of this embodiment has a refractive index of 1.40, a hydrogen radical content of 0.10wt%, and a viscosity of 10cp.
Preferably, the modified nano titanium dioxide powder in the component A of the high-reflection organosilicon composite composition of the embodiment has an average particle size of 0.1 μm.
Preferably, the platinum catalyst in the component a of the highly reflective silicone composite composition of the present embodiment is a methyl vinyl siloxane coordinated platinum catalyst.
Preferably, the inhibitor in the component B of the highly reflective silicone composite composition of the present embodiment is silanized alkynol.
Preferably, the adhesion promoter in the component B of the highly reflective silicone composite composition of the present embodiment is a siloxane oligomer containing an epoxy group or a hydroxyl-reactive group, a siloxane of a silicon boron structure.
According to the formula, the preparation method of the high-reflection organic silicon composite material comprises the following steps:
step one, dehumidifying modified nano titanium dioxide powder: dehumidifying the modified nano titanium dioxide powder by adopting heating equipment to ensure that the surface of the powder absorbs moisture to influence the viscosity-thixotropy index of the colloid;
step two, preparation of the component A: sequentially putting vinyl silicone resin, vinyl silicone oil, a platinum catalyst and the dehumidified modified nano titanium dioxide powder into a stirrer to form a mixed sizing material A, controlling the temperature of the mixed sizing material A to 50 ℃, shearing at a high rotating speed for 60min, and then screening through a filter screen with an aperture less than 100 meshes to obtain a component A;
step three, preparing the component B: sequentially adding vinyl silicone resin, hydrogen-containing silicone oil, vinyl silicone oil, a tackifier and an inhibitor into a stirring kettle to form a mixed rubber material B, and mixing the mixed rubber material B at a low speed to obtain a component B with the viscosity of less than 2000 cp;
step four, preparing the high-reflection organic silicon composite material: and (2) fully stirring the component A obtained in the step (III) and the component B obtained in the step (III), then putting the components into a 70kPa vacuum mixer, fully mixing the components at the highest speed of 800rpm to obtain a mixed rubber material C, and then adding the mixed rubber material C at the temperature of 150 ℃ for 3 hours to carry out curing and crosslinking, thus obtaining the high-reflection organic silicon composite material.
Example 3
The highly reflective silicone composite composition of this example according to the formulation of table 1 includes:
101kg of component A: comprises 40kg of vinyl silicone resin, 60kg of modified nano titanium dioxide powder and 1.0kg of platinum catalyst;
102.5kg of component B: comprises 20kg of vinyl silicone resin, 20kg of hydrogen-containing silicone oil, 60kg of vinyl silicone oil, 2.0kg of tackifier and 0.5kg of inhibitor.
Preferably, the vinyl silicone resin in the component A and the component B of the high-reflection silicone composite composition of the embodiment has a refractive index of 1.42, a vinyl content of 1.95wt% and a viscosity of 80000cp.
Preferably, the refractive index of the vinyl silicone oil in the component A and the refractive index of the vinyl silicone oil in the component B of the highly reflective silicone composite composition in the embodiment are both 1.42, the vinyl content is both 0.4wt%, and the viscosity is both 500cp.
Preferably, the hydrogen-containing silicone oil in the component B of the highly reflective silicone composite composition of this embodiment has a refractive index of 1.42, a hydrogen radical content of 1.10wt%, and a viscosity of 100cp.
Preferably, the modified nano titanium dioxide powder in the component A of the high-reflection organosilicon composite composition of the embodiment has an average particle size of 0.6 μm.
Preferably, the platinum catalyst in the component a of the highly reflective silicone composite composition of the present embodiment is a platinum catalyst coordinated with diethyl phthalate.
Preferably, the inhibitor in the component B of the highly reflective silicone composite composition of the present embodiment is methylbutynol.
Preferably, the adhesion promoter in the component B of the highly reflective silicone composite composition of the present embodiment is a siloxane oligomer containing an epoxy group or a hydroxyl-reactive group, a siloxane of a silicon boron structure.
According to the formula, the preparation method of the high-reflection organic silicon composite material comprises the following steps:
step one, dehumidifying modified nano titanium dioxide powder: dehumidifying the modified nano titanium dioxide powder by adopting heating equipment to ensure that the surface of the powder absorbs moisture to influence the viscosity-thixotropy index of the colloid;
step two, preparation of the component A: sequentially putting vinyl silicone resin, vinyl silicone oil, a platinum catalyst and the dehumidified modified nano titanium dioxide powder into a stirrer to form a mixed sizing material A, controlling the temperature of the mixed sizing material A to 50-70 ℃, shearing at a high rotating speed of 30-60min, and sieving with a sieve with an aperture smaller than 100 meshes to obtain a component A;
step three, preparing the component B: sequentially adding vinyl silicone resin, hydrogen-containing silicone oil, vinyl silicone oil, a tackifier and an inhibitor into a stirring kettle to form a mixed rubber material B, and mixing the mixed rubber material B at a low speed to obtain a component B with the viscosity of less than 2000 cp;
step four, preparing the high-reflection organic silicon composite material: and (3) fully stirring the component A obtained in the step (I) and the component B obtained in the step (III), putting the components into a 70-90kPa vacuum mixer, fully mixing at the highest speed of 800rpm to obtain a mixed rubber material C, and then adding the mixed rubber material C at the temperature of 150-200 ℃ for 2-3h for curing and crosslinking to obtain the high-reflection organic silicon composite material.
Example 4
The highly reflective silicone composite composition of this example according to the formulation of table 1 comprises:
101.85kg of component A: comprises 40kg of vinyl silicone resin, 5kg of vinyl silicone oil, 56kg of modified nano titanium dioxide powder and 0.85kg of platinum catalyst;
101.8kg of component B: comprises 22kg of vinyl silicone resin, 18kg of hydrogen-containing silicone oil, 60kg of vinyl silicone oil, 1.5kg of tackifier and 0.3kg of inhibitor.
Preferably, the vinyl silicone resin in the component A and the component B of the highly reflective silicone composite composition of the embodiment has a refractive index of 1.41, a vinyl content of 1.41wt%, and a viscosity of 50000cp.
Preferably, the refractive index of the vinyl silicone oil in the component A and the refractive index of the vinyl silicone oil in the component B of the highly reflective silicone composite composition in the embodiment are both 1.41, the vinyl content is both 0.2wt%, and the viscosity is both 200cp.
Preferably, the hydrogen-containing silicone oil in the component B of the highly reflective silicone composite composition of this embodiment has a refractive index of 1.41, a hydrogen radical content of 0.5wt%, and a viscosity of 80cp.
Preferably, the modified nano titanium dioxide powder in the component A of the highly reflective silicone composite composition of the present embodiment has an average particle size of 0.2. Mu.m.
Preferably, the platinum catalyst in the component a of the highly reflective silicone composite composition of the present embodiment is a platinum catalyst coordinated with aminohydroxypolysiloxane.
Preferably, the inhibitor in the component B of the highly reflective silicone composite composition of the present embodiment is propyl acetylene alcohol.
Preferably, the adhesion promoter in the component B of the highly reflective silicone composite composition of the present embodiment is a siloxane oligomer containing an epoxy group or a hydroxyl-reactive group, a siloxane of a silicon boron structure.
According to the formula, the preparation method of the high-reflection organic silicon composite material comprises the following steps:
step one, dehumidifying modified nano titanium dioxide powder: dehumidifying the modified nano titanium dioxide powder by adopting heating equipment to ensure that the surface of the powder absorbs moisture to influence the viscosity-thixotropy index of the colloid;
step two, preparation of the component A: sequentially putting vinyl silicone resin, vinyl silicone oil, a platinum catalyst and the dehumidified modified nano titanium dioxide powder into a stirrer to form a mixed sizing material A, controlling the temperature of the mixed sizing material A to 60 ℃, shearing at a high rotating speed for 40min, and screening through a filter screen with a pore diameter of less than 100 meshes to obtain a component A;
step three, preparing the component B: sequentially adding vinyl silicone resin, hydrogen-containing silicone oil, vinyl silicone oil, a tackifier and an inhibitor into a stirring kettle to form a mixed rubber material B, and mixing the mixed rubber material B at a low speed to obtain a component B with the viscosity of less than 2000 cp;
step four, preparing the high-reflection organic silicon composite material: and (2) fully stirring the component A obtained in the step (III) and the component B obtained in the step (III), putting the components into a 70-90kPa vacuum mixer, fully mixing at the highest speed of 800rpm to obtain a mixed rubber material C, and adding the mixed rubber material C at 160 ℃ for 3 hours for curing and crosslinking to obtain the high-reflection organic silicon composite material.
TABLE 1
Test examples
The high-reflection organic silicon composite materials prepared in the examples 1 to 4 are subjected to performance tests, and the test results are shown in a table 2:
TABLE 2
| Performance of | Example 1 | Example 2 | Example 3 | Example 4 |
| Viscosity/cp | 2000 | 4500 | 3500 | 2500 |
| Thixotropic property | 1.32 | 1.58 | 1.70 | 1.41 |
| Hardness of | D30 | D35 | D45 | D35 |
| Reflectivity of light | 92％ | 96％ | 99％ | 98％ |
| Elongation at Break | 10％ | 30％ | 25％ | 30％ |
| Flexural Strength/MPa | 1.0 | 1.4 | 1.3 | 1.35 |
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (9)
1. The high-reflection organic silicon composite material composition is characterized by comprising a component A and a component B, wherein the mass ratio of the component A to the component B is 1: (1-2);
the component A comprises 30-40 parts by weight of vinyl silicone resin, 0-30 parts by weight of vinyl silicone oil, 40-600 parts by weight of modified nano titanium dioxide powder and 0.5-1.0 part by weight of platinum catalyst;
the component B comprises, by mass, 20-40 parts of vinyl silicone resin, 10-20 parts of hydrogen-containing silicone oil, 50-60 parts of vinyl silicone oil, 0.1-2.0 parts of tackifier and 0.2-0.5 part of inhibitor.
2. The silicone composite composition according to claim 1, wherein the refractive index of the vinyl silicone resin in each of the component A and the component B is 1.40-1.42, the vinyl content is 1.31-1.95wt%, and the viscosity is 6000-80000cp.
3. The silicone composite composition according to claim 1, wherein the refractive index of the vinyl silicone oil in each of the component A and the component B is 1.40 to 1.42, the vinyl content is 0.1 to 0.4wt%, and the viscosity is 100 to 500cp.
4. The highly reflective silicone composite composition according to claim 1, wherein the hydrogen-containing silicone oil in the component B has a refractive index of 1.40 to 1.42, a hydrogen group content of 0.10 to 1.10wt%, and a viscosity of 10 to 100cp.
5. The highly reflective silicone composite composition according to claim 1, wherein the modified nano titanium dioxide powder in component a has an average particle size of 0.1-0.6 μm.
6. The high-reflectivity silicone composite composition according to claim 1, wherein the platinum catalyst in the component A is at least one of a tetrahydrofuran-coordinated platinum catalyst, a methylvinylsiloxane-coordinated platinum catalyst, a diethyl phthalate-coordinated platinum catalyst and an aminohydroxypolysiloxane-coordinated platinum catalyst.
7. The silicone composite composition according to claim 1, wherein the inhibitor in component B is at least one of ethynylcyclohexanol, silanized alkynol, methylbutynol, propylethynyl alcohol, dimethylacetylene alcohol, and diethyl maleate.
8. The highly reflective silicone composite composition according to claim 1, wherein the adhesion promoter in component B is a siloxane oligomer containing an epoxy group or a hydroxyl-reactive group.
9. The preparation method of the high-reflection organic silicon composite material is characterized by comprising the following steps of:
step one, dehumidifying modified nano titanium dioxide powder: dehumidifying the modified nano titanium dioxide powder by adopting heating equipment to ensure that the surface of the powder absorbs moisture to influence the viscosity-thixotropy index of the colloid;
step two, preparation of the component A: sequentially putting vinyl silicone resin, vinyl silicone oil, a platinum catalyst and the dehumidified modified nano titanium dioxide powder into a stirrer to form a mixed sizing material A, controlling the temperature of the mixed sizing material A to 50-70 ℃, shearing at a high rotating speed of 30-60min, and sieving with a sieve with an aperture smaller than 100 meshes to obtain a component A;
step three, preparing the component B: sequentially adding vinyl silicone resin, hydrogen-containing silicone oil, vinyl silicone oil, a tackifier and an inhibitor into a stirring kettle to form a mixed rubber material B, and mixing the mixed rubber material B at a low speed to obtain a component B with the viscosity of less than 2000 cp;
step four, preparing the high-reflection organic silicon composite material: and (2) fully stirring the component A obtained in the step (III) and the component B obtained in the step (III), putting the components into a 70-90kPa vacuum mixer, fully mixing the components at the highest speed of 800rpm to obtain a mixed rubber material C, and adding the mixed rubber material C at the temperature of 150-200 ℃ for 2-3 hours for curing and crosslinking to obtain the high-reflection organic silicon composite material.
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