CN103788916A - Organic silicon sealant with fast-curing property and high heat and humidity resistance and preparation method thereof - Google Patents
Organic silicon sealant with fast-curing property and high heat and humidity resistance and preparation method thereof Download PDFInfo
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- CN103788916A CN103788916A CN201410048058.3A CN201410048058A CN103788916A CN 103788916 A CN103788916 A CN 103788916A CN 201410048058 A CN201410048058 A CN 201410048058A CN 103788916 A CN103788916 A CN 103788916A
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Abstract
The invention discloses an organic silicon sealant with fast-curing property and high heat and humidity resistance and a preparation method thereof. The organic silicon sealant comprises a main agent component and a curing agent component. The main agent component and the curing agent component are uniformly mixed according to a weight ratio being 100: 10 to 100:20 and then are cured at a room temperature to form an organic silicon elastomer. After the component A and the component B of the double-component organic silicon sealant disclosed by the invention are mixed, the surface dry time of the double-component organic silicon sealant at a room temperature is 8-20 minutes; after the double-component organic silicon sealant is cured for 2-3 hours, the hardness and the tensile strength of the sealant can reach above 60% of the hardness and the tensile strength after the sealant is completely cured, and therefore, the construction and working efficiency can be substantially improved; the completely cured elastomer has high strength, moderate hardness, good toughness and excellent adhesion on multiple materials. Meanwhile, compared with a common double-component organic silicon sealant, the organic silicon sealant disclosed by the invention has more excellent high heat and humidity resistance and weather fastness.
Description
Technical field
The present invention relates to a kind of organosilicon sealant, be specifically related to a kind of bi-component organosilicone sealant with fast setting and high humidity resistance and preparation method thereof.
Background technology
Self cure condensed type organic silicon seal gum is mainly divided into single-component condensed type organic silicon seal gum and two large class of component condensed type organic silicon seal gum two, single-component condensed type organic silicon seal gum operation is simple, mechanical property and cementability are all very excellent, but because it is mainly by reacting curing cross-linked with airborne moisture, therefore while solidifying, be subject to airborne humidity effect larger, deep is solidified very slow, therefore construction and operating efficiency are slower, and two component condensed type organic silicon seal gums in the time of crosslinking curing, be not substantially subject to air in the impact of humidity, deep is solidified very fast, not heat release while simultaneously solidifying, shrinking percentage is little, internal stress is low and have a good mechanical property, heat-resisting and cold tolerance, therefore be applied in more and more building just gradually at present, electronics, automobile, in the industries such as photovoltaic.
Current various electronics and industrial trade are for requiring more and more longer the work-ing life of product, as the architectural design life-span requires 30-50 conventionally, photovoltaic module requires 25 years, automobile can bear more than 10 years, meanwhile at present increasing electron device needs under environment, to use out of doors, therefore for the bi-component organosilicone sealant being applied in these industries, except requiring seal gum must possess good machinery and adhesiveproperties, weathering resistance for seal gum is also had higher requirement, especially humidity resistance aspect.Although many bi-component organosilicone sealants have quick solidifying on the market at present, the advantage that operating efficiency is high, but the humidity resistance of glue is not ideal, such as by glue under two 85 (temperature of 85 ℃ and 85% humidity) condition after aging 1000h the mechanical property of glue can decline to a great extent, even completely lose intensity, therefore develop a kind of can fast setting simultaneously extremely important with the bi-component organosilicone sealant of excellent humidity resistance again.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and the bi-component organosilicone sealant of fast setting, humidity resistance excellence is provided.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of bi-component organosilicone sealant with fast setting and high humidity resistance, be made up of host component and solidifying agent component, described host component at room temperature solidify to form silicone elastomer after mixing according to weight ratio 100:10 to 100:20 with solidifying agent component; Described host component comprises: 100 parts of hydroxyl-terminated injecting two methyl siloxanes, 5 to 30 parts, softening agent, 60 to 120 parts of fillers; Described solidifying agent component comprises: 20 to 80 parts, softening agent, 5 to 40 parts of fillers, 10 to 50 parts of linking agents, 10 to 30 parts of silane coupling agents, 0.5 to 5 part of catalyzer.
Further technical scheme is the hydroxyl-terminated injecting two methyl siloxane that the viscosity of hydroxyl-terminated injecting two methyl siloxane at 25 ℃ is 1000mPa.s to 80000mPa.s.
Further technical scheme is that softening agent is the dimethyl silicone oil that at 25 ℃, viscosity is 50mPa.s to 5000mPa.s.
Further technical scheme is that filler comprises one or more in silicon powder, diatomite, water-ground limestone, nano-calcium carbonate, talcum powder, precipitated silica, thermal silica, carbon black.
Further technical scheme is that linking agent comprises one or more in methyl silicate, tetraethoxy, ethyl polysilicate, positive silicic acid propyl ester, methyltrimethoxy silane, vinyltrimethoxy silane, Union carbide A-162, dimethyldimethoxysil,ne.
Further technical scheme is that silane coupling agent comprises γ-aminopropyl triethoxysilane, γ-aminopropyltrimethoxysilane, N-β-aminoethyl-γ-aminopropyl methyltrimethoxy silane, 2-ethyl trimethoxy silane, 3-ethyl trimethoxy silane, 4-ethyl trimethoxy silane, 2-epoxy cyclohexane base silane, 3-epoxy cyclohexane base silane, 4-epoxy cyclohexane base silane, γ-glycidyl ether oxygen base propyl group trimethoxy silane, γ propyltrimethoxy silane, γ-methacryloyl oxosilane, γ-propyl-triethoxysilicane, γ methacryloyl oxosilane, γ-propyl group dimethoxy silane, the mixing of one or more coupling agents in γ-methacryloyl oxosilane.
Further technical scheme is that catalyzer comprises one or more in dibutyl tin laurate, two lauric acid two stannous octoates, two lauric acid two tin acetates, two neodecanoic acid tin methides, stannous octoate.
Further technical scheme is to provide the preparation method of the bi-component organosilicone sealant with fast setting and high humidity resistance, and described preparation method comprises the following steps:
60 to 120 parts of 100 parts of the hydroxyl-terminated injecting two methyl siloxanes that is 1000mPa.s to 80000mPa.s by viscosity, 5 to 30 parts, softening agent, filler join in kneader, 120 to 130 ℃ of temperature, under vacuum tightness 0.08 to 0.09Mpa condition, mediate 1.5 to 2 hours, mediate complete, sizing material is crossed to three rollers after sizing material is cooling and milled, the sizing material after milling is transferred in planet stirring vacuum defoamation and stirs discharging after 20 minutes and obtain host component;
By 20 to 80 parts, softening agent, 5 to 40 parts of fillers, 10 to 50 parts of linking agents, 10 to 30 parts of silane coupling agents, 0.5 to 5 part of catalyzer joins vacuum high-speed stirring in planet stirring and packs and obtain solidifying agent component after 1 to 2 hour.
When applying glue, according to mass ratio 100:10 to 100:20, host component, solidifying agent component are mixed also and under room temperature, solidify to form elastomerics after vacuum removal bubble.
Compared with prior art, the invention has the beneficial effects as follows: bi-component organosilicone sealant host component of the present invention, after solidifying agent component mixes, surface drying time is at room temperature 8 to 20 minutes, solidify the hardness of glue and tensile strength after 2 to 3 hours can reach after solidifying completely more than 60%, can increase substantially construction and operating efficiency, elastomerics intensity after solidifying is completely high, hardness is moderate, good toughness, excellent in adhesion to multiple material, meanwhile, there is more excellent humidity resistance and weathering resistance than common bi-component organosilicone sealant.
Embodiment
The present invention is further elaborated below.
After revising claims, contriver filled into by proxy.
Embodiment 1
Below represent host component with A component, represent solidifying agent component with B component.A component: the hydroxyl-terminated injecting two methyl siloxane that is 5000mPa.s by 70 parts of viscosity by weight, 30 parts of hydroxyl-terminated injecting two methyl siloxanes that viscosity is 20000mPa.s, dimethyl silicone oil and 100 parts of nm-class active calcium carbonates that 10 parts of viscosity is 1000mPa.s join in kneader, 120 to 130 ℃ of temperature, under vacuum tightness-0.085Mpa condition, mediate 1.5 hours, after kneading, sizing material is crossed three-roll grinder and is milled one time, crosses and is transferred in planet stirring vacuum defoamation after roller 30 minutes.
B component: the dimethyl silicone oil that is 1000mPa.s by 72 parts of viscosity by weight, 11 parts of thermal silicas, 10 parts of vinyltrimethoxy silanes, 10 parts of methyltrimethoxy silanes, 25 parts of positive silicic acid propyl ester, reactant and 2 parts of dibutyl tin laurates of 20 parts of γ-aminopropyl triethoxysilanes and γ-glycidyl ether oxygen base propyl trimethoxy silicane join in planet stirring, and discharging after vacuum tightness is to stir 1 hour under 0.085 to 0.095Mpa condition, packs.
According to mass ratio 100:15, A component, B component are mixed also and under room temperature, solidify to form elastomerics after vacuum removal bubble.
Embodiment 2
A component: the hydroxyl-terminated injecting two methyl siloxane that is 5000mPa.s by 40 parts of viscosity by weight, 60 parts of hydroxyl-terminated injecting two methyl siloxanes that viscosity is 20000mPa.s, dimethyl silicone oil, 70 parts of nm-class active calcium carbonates and 45 parts of water-ground limestones that 15 parts of viscosity is 100mPa.s join in kneader, 120 to 130 ℃ of temperature, under vacuum tightness-0.085Mpa condition, mediate 1.5 hours, after kneading, sizing material is crossed three-roll grinder and is milled one time, crosses and is transferred in planet stirring vacuum defoamation after roller 30 minutes.
B component: the dimethyl silicone oil that is 1000mPa.s by 45 parts of viscosity by weight, 12 parts of dimethyl silicone oils that viscosity is 5000mPa.s, 12 parts of pigment carbon blacks, 10 parts of methyl silicates, 5 parts of vinyltriethoxysilanes, reactant and 1 part of dibutyl tin laurate of 15 parts of γ propyltrimethoxy silanes or γ-methacryloyl oxosilane and γ-aminopropyl triethoxysilane join in planet stirring, discharging after vacuum tightness is to stir 1.5 hours under 0.085 to 0.095Mpa condition, packs.
According to mass ratio 100:10, A component, B component are mixed also and under room temperature, solidify to form elastomerics after vacuum removal bubble.
Embodiment 3
A component: the hydroxyl-terminated injecting two methyl siloxane that is 10000mPa.s by 100 parts of viscosity by weight, dimethyl silicone oil, 80 parts of nm-class active calcium carbonates and 30 parts of silicon powders that 13 parts of viscosity is 500mPa.s join in kneader, 120 to 130 ℃ of temperature, under vacuum tightness-0.085Mpa condition, mediate 1.5 hours, after kneading, sizing material is crossed three-roll grinder and is milled one time, crosses and is transferred in planet stirring vacuum defoamation after roller 30 minutes.
B component: the dimethyl silicone oil that is 3000mPa.s by 30 parts of viscosity by weight, 20 parts of vinyl silicone oils that viscosity is 1000mPa.s, 10 parts of pigment carbon blacks, 15 parts of methyl silicates, 9 parts of positive silicic acid propyl ester, the reactant of 15 parts of γ propyltrimethoxy silanes or γ-methacryloyl oxosilane and N-β-aminoethyl-γ-aminopropyl methyltrimethoxy silane and 2-ethyl trimethoxy silane or 3-ethyl trimethoxy silane or 4-ethyl trimethoxy silane or 2-epoxy cyclohexane base silane or 3-epoxy cyclohexane base silane or 4-epoxy cyclohexane base silane, 1 part of stannous octoate joins in planet stirring, discharging after vacuum tightness is to stir 1.5 hours under 0.085 to 0.095Mpa condition, pack.
According to mass ratio 100:10, A component, B component are mixed also and under room temperature, solidify to form elastomerics after vacuum removal bubble.
Embodiment 4
A component: the hydroxyl-terminated injecting two methyl siloxane that is 20000mPa.s by 100 parts of viscosity by weight, vinyl silicone oil and 100 parts of nm-class active calcium carbonates that 20 parts of viscosity is 300mPa.s join in kneader, 120 to 130 ℃ of temperature, under vacuum tightness-0.085Mpa condition, mediate 1.5 hours, after kneading, sizing material is crossed three-roll grinder and is milled one time, crosses and is transferred in planet stirring vacuum defoamation after roller 30 minutes.
B component: the dimethyl silicone oil that is 1000mPa.s by 65 parts of viscosity by weight, 5 parts of vinyl silicone oils that viscosity is 3000mPa.s, 15 parts of thermal silicas, 20 parts of methyltrimethoxy silanes, 10 parts of dimethyldiethoxysilanes, 13 parts of positive silicic acid propyl ester, reactant and 2 parts of dibutyl tin laurates of 20 parts of N-β-aminoethyl-γ-aminopropyl methyltrimethoxy silanes and γ-glycidyl ether oxygen base propyl trimethoxy silicane join in planet stirring, discharging after vacuum tightness is to stir 1 hour under 0.085 to 0.095Mpa condition, packs.
According to mass ratio 100:15, A component, B component are mixed also and under room temperature, solidify to form elastomerics after vacuum removal bubble.
Comparative example 1
A component: with embodiment 1
B component: the dimethyl silicone oil that is 1000mPa.s by 77 parts of viscosity by weight, 11 parts of thermal silicas, 10 parts of vinyltrimethoxy silanes, 10 parts of methyltrimethoxy silanes, 25 parts of positive silicic acid propyl ester, 10 parts of γ-aminopropyl triethoxysilanes, 5 parts of γ-glycidyl ether oxygen base propyl trimethoxy silicanes and 2 parts of dibutyl tin laurates join in planet stirring, and discharging after vacuum tightness is to stir 1 hour under 0.085 to 0.095Mpa condition, packs.
According to mass ratio 100:15, A, B component are mixed also and under room temperature, solidify to form elastomerics after vacuum removal bubble.
Comparative example 2
A component: with embodiment 3
B component: the dimethyl silicone oil that is 3000mPa.s by 30 parts of viscosity by weight, 13 parts of vinyl silicone oils that viscosity is 1000mPa.s, 10 parts of pigment carbon blacks, 15 parts of methyl silicates, 9 parts of positive silicic acid propyl ester, 13 parts of N-β-aminoethyl-γ-aminopropyl methyltrimethoxy silanes, 5 parts of 2-(3,4-epoxy cyclohexane base) ethyl trimethoxy silane, 4 parts of γ-(methacryloxypropyl) propyl trimethoxy silicanes, 1 part of stannous octoate joins in planet stirring, and discharging after vacuum tightness is to stir 1.5 hours under 0.085 to 0.095Mpa condition, packs.
According to mass ratio 100:10, A, B component are mixed also and under room temperature, solidify to form elastomerics after vacuum removal bubble.
Above-described embodiment and comparative example proportionally A component, B component are mixed and vacuum removal bubble after under room temperature, solidify and test mechanics and adhesiveproperties after 7 days, acquired results is in table 1:
Table 1
As can be seen from the table, bi-component organosilicone sealant of the present invention also has excellent wet and heat ageing resistant performance except having faster surface drying time simultaneously
" embodiment 1 ", " embodiment 2 " that spoken of in this manual, " embodiment 3 ", " embodiment " etc., refer to specific features, structure or the feature described in conjunction with this embodiment and be included at least one embodiment that the application's generality describes.In specification sheets, multiple local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while describing a specific features, structure or feature in conjunction with any embodiment, what advocate is to realize this feature, structure or feature in conjunction with other embodiment also to fall within the scope of the invention.
Although with reference to the multiple explanatory embodiment inventing, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of the open claim of the application, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (8)
1. one kind has the bi-component organosilicone sealant of fast setting and high humidity resistance, be made up of host component and solidifying agent component, described host component at room temperature solidify to form silicone elastomer after mixing according to weight ratio 100:10 to 100:20 with solidifying agent component; It is characterized in that: described host component comprises: 100 parts of hydroxyl-terminated injecting two methyl siloxanes, 5 to 30 parts, softening agent, 60 to 120 parts of fillers; Described solidifying agent component comprises: 20 to 80 parts, softening agent, 5 to 40 parts of fillers, 10 to 50 parts of linking agents, 10 to 30 parts of silane coupling agents, 0.5 to 5 part of catalyzer.
2. the bi-component organosilicone sealant with fast setting and high humidity resistance according to claim 1, is characterized in that described hydroxyl-terminated injecting two methyl siloxane is the hydroxyl-terminated injecting two methyl siloxane that the viscosity at 25 ℃ is 1000mPa.s to 80000mPa.s.
3. the bi-component organosilicone sealant with fast setting and high humidity resistance according to claim 1, is characterized in that described softening agent is the dimethyl silicone oil that at 25 ℃, viscosity is 50mPa.s to 5000mPa.s.
4. the bi-component organosilicone sealant with fast setting and high humidity resistance according to claim 1, is characterized in that described filler comprises one or more in silicon powder, diatomite, water-ground limestone, nano-calcium carbonate, talcum powder, precipitated silica, thermal silica, carbon black.
5. the bi-component organosilicone sealant with fast setting and high humidity resistance according to claim 1, is characterized in that described linking agent comprises one or more in methyl silicate, tetraethoxy, ethyl polysilicate, positive silicic acid propyl ester, methyltrimethoxy silane, vinyltrimethoxy silane, Union carbide A-162, dimethyldimethoxysil,ne.
6. the bi-component organosilicone sealant with fast setting and high humidity resistance according to claim 1, it is characterized in that described silane coupling agent comprises γ-aminopropyl triethoxysilane, γ-aminopropyltrimethoxysilane, N-β-aminoethyl-γ-aminopropyl methyltrimethoxy silane, 2-ethyl trimethoxy silane, 3-ethyl trimethoxy silane, 4-ethyl trimethoxy silane, 2-epoxy cyclohexane base silane, 3-epoxy cyclohexane base silane, 4-epoxy cyclohexane base silane, γ-glycidyl ether oxygen base propyl group trimethoxy silane, γ propyltrimethoxy silane, γ-methacryloyl oxosilane, γ-propyl-triethoxysilicane, γ methacryloyl oxosilane, γ-propyl group dimethoxy silane, the mixing of one or more coupling agents in γ-methacryloyl oxosilane.
7. the bi-component organosilicone sealant with fast setting and high humidity resistance according to claim 1, is characterized in that described catalyzer comprises one or more in dibutyl tin laurate, two lauric acid two stannous octoates, two lauric acid two tin acetates, two neodecanoic acid tin methides, stannous octoate.
8. according to the preparation method of the bi-component organosilicone sealant with fast setting and high humidity resistance described in the arbitrary claim of claim 1 to 7, it is characterized in that: described preparation method comprises the following steps:
60 to 120 parts of 100 parts of the hydroxyl-terminated injecting two methyl siloxanes that is 1000mPa.s to 80000mPa.s by viscosity, 5 to 30 parts, softening agent, filler join in kneader, 120 to 130 ℃ of temperature, under vacuum tightness 0.08 to 0.09Mpa condition, mediate 1.5 to 2 hours, mediate complete, sizing material is crossed to three rollers after sizing material is cooling and milled, the sizing material after milling is transferred in planet stirring vacuum defoamation and stirs discharging after 20 minutes and obtain host component;
By 20 to 80 parts, softening agent, 5 to 40 parts of fillers, 10 to 50 parts of linking agents, 10 to 30 parts of silane coupling agents, 0.5 to 5 part of catalyzer joins vacuum high-speed stirring in planet stirring and packs and obtain solidifying agent component after 1 to 2 hour.
When applying glue, according to mass ratio 100:10 to 100:20, host component, solidifying agent component are mixed also and under room temperature, solidify to form elastomerics after vacuum removal bubble.
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| CN107880797A (en) * | 2017-11-07 | 2018-04-06 | 浙江福斯特新材料研究院有限公司 | The special wet-heat resisting high intensity structural silicone adhesive of photovoltaic module |
| CN108285768A (en) * | 2018-01-22 | 2018-07-17 | 深圳市兴永为硅胶有限公司 | Tuner（LNB）It is bonded special room curing silicon rubber |
| CN108587557A (en) * | 2018-05-11 | 2018-09-28 | 广州市联中电子科技有限公司 | A kind of high rigidity rapid curing organic silicon potting adhesive and its manufacturing method |
| CN110776743A (en) * | 2018-07-24 | 2020-02-11 | 朴在文 | Through-hole sealing composition and through-hole sealing method using same |
| CN110922935A (en) * | 2019-12-07 | 2020-03-27 | 杭州之江新材料有限公司 | Two-component organosilicon sealant and application thereof in inflatable hollow glass |
| CN110951443A (en) * | 2019-10-30 | 2020-04-03 | 烟台德邦科技有限公司 | Single-component organic silica gel for bonding multiple materials and preparation method thereof |
| CN111019591A (en) * | 2019-12-07 | 2020-04-17 | 杭州之江新材料有限公司 | Two-component organosilicon sealant and application thereof in LOW-E hollow glass |
| WO2020199728A1 (en) * | 2019-03-29 | 2020-10-08 | 青岛海尔电冰箱有限公司 | Sealing method for refrigeration system pipeline |
| WO2020199729A1 (en) * | 2019-03-29 | 2020-10-08 | 青岛海尔电冰箱有限公司 | Seal method for pipeline of refrigeration system |
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| CN111019591A (en) * | 2019-12-07 | 2020-04-17 | 杭州之江新材料有限公司 | Two-component organosilicon sealant and application thereof in LOW-E hollow glass |
| CN110922935A (en) * | 2019-12-07 | 2020-03-27 | 杭州之江新材料有限公司 | Two-component organosilicon sealant and application thereof in inflatable hollow glass |
| CN111019591B (en) * | 2019-12-07 | 2022-05-24 | 杭州之江新材料有限公司 | Two-component organosilicon sealant and application thereof in LOW-E hollow glass |
| CN110922935B (en) * | 2019-12-07 | 2022-05-24 | 杭州之江新材料有限公司 | Two-component organosilicon sealant and application thereof in inflatable hollow glass |
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Application publication date: 20140514 |