CN103289636B - Silicone weather-proof sealant and preparation method thereof - Google Patents
Silicone weather-proof sealant and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of adhesives, and in particular relates to a silicone weather-proof sealant and a preparation method thereof. The silicone weather-proof sealant disclosed by the invention is prepared from the following raw materials: room-temperature vulcanized methyl silicone rubber, 201 methyl silicone oil, nanometre activated calcium carbonate, calcium carbonate, silica, methyltrissilane, di-n-butyltin dilaurate, aminopropyltriethoxysilane, trimethoxypropylsilane and a pigment. The silicone weather-proof sealant disclosed by the invention is good in adhesion and tensile strength, excellent in weather ageing resistance, and great in weather resistance, vibration resistance, moisture resistance, odour resistance, cold-heat change adaptability, and the like.
Description
Technical field
The invention belongs to field of adhesive technology, be specifically related to a kind of silicone weatherproof sealant and preparation method thereof.
Background technology
At present, energy-conservation, the waterproof that the modernization of urban architecture requires to build more, heat insulation and comfortable, the sealing of seam, also more and more by construction industry is paid attention to, facilitates the development of building joint seal gum greatly.The continuous of building demand expands the continuous growth promoting silicone structure sealant demand, and technical progress promotes the development of silicone structure sealant.
Silicone weather resistant glue is mainly used in the weather-proof joint seal of various glass curtain wall, aluminium veneer curtain wall, is used for waterproof sealing.Acid silicone adhesive can corrode or can not bonded copper, brass (and other copper-bearing alloy), zinc, magnesium, plated metal, masonry material forming articles and cementite matrix can not use Aci-Jel simultaneously, the material that methylmethacrylate, poly-carbonic acid, polypropylene, polyethylene are made uses sour glue cannot obtain good adhesive effect and good consistency.The mobile connection being greater than joint gap 25% is also not suitable for Aci-Jel, has the place of denuding and can produce essence drawback also should not use sour glue.The silicone adhesive of some poor quality, because producer reduces costs, adds excessive filler.Make seal gum elasticity and elongation not reach requirement, in engineering, there will be cracking, wrinkling, foaming phenomena.
Summary of the invention
For the problems referred to above, the invention provides a kind of silicone weatherproof sealant, described seal gum has good cementability, tensile strength, excellent weather-resistant performance, and has weathering resistance, vibration resistance, and moistureproof, anti-foul smell and adapt to the excellent performance such as cold and hot change is large.
The present invention is achieved through the following technical solutions:
A kind of silicone weatherproof sealant, comprise the raw material of following weight part: viscosity is the methyl silicone rubber at room temperature cure 50 ~ 60 parts of 15000 ~ 25000 mPas, viscosity is the methyl silicone rubber at room temperature cure 130 ~ 160 parts of 70000 ~ 90000 mPas, viscosity is 201 methyl-silicone oil 8 ~ 15 parts of 400 ~ 500 mPas, viscosity is 201 methyl-silicone oil 22 ~ 45 parts of 100 ~ 200 mPas, nm-class active calcium carbonate 180 ~ 210 parts, 70 ~ 90 parts, calcium carbonate, silicon-dioxide 20 ~ 30 parts, methyl tributanoximo silane 20 ~ 40 parts, di-n-butyltin dilaurate 5 ~ 10 parts, aminopropyl triethoxysilane 1 ~ 2 part, propyl trimethoxy silicane 1 ~ 3 part, pigment 10 ~ 20 parts.
According to above-mentioned silicone weatherproof sealant, preferably include the raw material of following weight part: viscosity is the methyl silicone rubber at room temperature cure 55 parts of 20000 mPas, viscosity is the methyl silicone rubber at room temperature cure 145 parts of 80000 mPas, viscosity is 201 methyl-silicone oil 10 parts of 500 mPas, viscosity is 201 methyl-silicone oil 37.5 parts of 100 mPas, nm-class active calcium carbonate 200 parts, 75 parts, calcium carbonate, silicon-dioxide 25 parts, methyl tributanoximo silane 30 parts, di-n-butyltin dilaurate 7 parts, aminopropyl triethoxysilane 1 part, propyl trimethoxy silicane 1.5 parts, pigment 15 parts.
According to above-mentioned silicone weatherproof sealant, described pigment is carbon black or titanium dioxide.
A preparation method for above-mentioned silicone weatherproof sealant, comprises the following steps:
(1) be 201 methyl-silicone oils of 400 ~ 500mPas by the methyl silicone rubber at room temperature cure of each viscosity, viscosity, nm-class active calcium carbonate, calcium carbonate, silicon-dioxide adds vacuum kneader, heat up and stir, from 80 ~ 100 DEG C, vacuumize dehydration, then temperature 100 ~ 200 DEG C, vacuum tightness be-0.07 ~-0.1MPa, rotating speed stirs under being 500 ~ 600rpm condition and makes base-material in 3 ~ 4 hours;
(2) be that 201 methyl-silicone oils of 100 ~ 200mPas mix by pigment, viscosity, make base pigment;
(3) on gained base-material, shredder carries out being ground to fineness≤50 μm, then methyl tributanoximo silane, di-n-butyltin dilaurate, aminopropyl triethoxysilane, propyl trimethoxy silicane, base pigment is added, under temperature 100 ~ 120 DEG C, vacuum tightness-0.08 ~-0.12MPa, 50 ~ 60rpm condition, stir in high speed dispersor and make finished product in 1 ~ 1.5 hour, get final product discharging.
According to above-mentioned silicone weatherproof sealant preparation method, described shredder is three-roll grinder.
positive beneficial effect of the present invention:
Present silicone weather proofing sealant has good cementability, tensile strength, excellent weather-resistant performance, and has weathering resistance, vibration resistance, and moistureproof, anti-foul smell and adapt to the excellent performance such as cold and hot change is large.
(1) present silicone weather proofing sealant displacement capacity reaches 25 grades, for curtain wall flexible and shearing strain normally, this product can retention constant, play effective sealing function, there will not be cracking, wrinkling.
(2) present silicone weather proofing sealant solidification after-30 degree low temperature under still can not become fragile, harden or ftracture, under 90 degree of high temperature can not deliquescing, degraded, remain the silicone weatherproof sealant of favorable elasticity.
(3) present silicone weather proofing sealant has suitability more widely, for the weather-proof sealing of various glass curtain wall, the weather-proof sealing of metal (aluminium sheet) enamel curtain wall, the joint seal of concrete, metal etc., roof building joint seal etc., the feature overcoming Aci-Jel corroding metal material and react with basic material is good with the substrate compatibility on market, can realize the bonding between most of building material product, therefore using value improves greatly.
(4) present silicone weather-resistant glue environment-friendly tasteless, harmless.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in more detail, but the invention is not restricted to these embodiments.
embodiment 1
The present embodiment silicone weatherproof sealant is made up of the raw material of following weight part: viscosity is the methyl silicone rubber at room temperature cure 55 parts of 20000 mPas, viscosity is the methyl silicone rubber at room temperature cure 145 parts of 80000 mPas, viscosity is 201 methyl-silicone oil 10 parts of 500 mPas, viscosity is 201 methyl-silicone oil 37.5 parts of 100mPas, nm-class active calcium carbonate 200 parts, 75 parts, calcium carbonate, silicon-dioxide 25 parts, methyl tributanoximo silane 30 parts, di-n-butyltin dilaurate 7 parts, aminopropyl triethoxysilane 1 part, propyl trimethoxy silicane 1.5 parts, carbon black 15 parts,
Prepared by following steps:
(1) be 201 methyl-silicone oils of 500mPas by the methyl silicone rubber at room temperature cure viscosity of each viscosity, viscosity, nm-class active calcium carbonate, calcium carbonate, silicon-dioxide adds vacuum kneader, heat up and stir, start to vacuumize dehydration at 100 DEG C, then temperature 150 DEG C, vacuum tightness be-0.08MPa, rotating speed stirs under being 500rpm condition and makes base-material in 3 hours;
(2) be that 201 methyl-silicone oils of 100mPas mix by carbon black, viscosity, make base-material carbon black;
(3) on gained base-material, shredder carries out being ground to fineness≤50 μm, then methyl tributanoximo silane, di-n-butyltin dilaurate, aminopropyl triethoxysilane, propyl trimethoxy silicane, base-material carbon black is added, in high speed dispersor under temperature 100 DEG C, vacuum tightness-0.08MPa, 50rpm condition, stir and make finished product in 1 hour, get final product discharging.
embodiment 2
The present embodiment silicone weatherproof sealant comprises the raw material of following weight part: viscosity is the methyl silicone rubber at room temperature cure 50 parts of 25000 mPas, viscosity is the methyl silicone rubber at room temperature cure 130 parts of 90000mPas, viscosity is 201 methyl-silicone oil 8 parts of 500mPas, viscosity is 201 methyl-silicone oil 22 parts of 200 mPas, nm-class active calcium carbonate 180 parts, 70 parts, calcium carbonate, silicon-dioxide 20 parts, methyl tributanoximo silane 20 parts, di-n-butyltin dilaurate 5 parts, aminopropyl triethoxysilane 1 part, propyl trimethoxy silicane 1 part, carbon black 10 parts.
Prepared by following steps:
(1) be 201 methyl-silicone oils of 500mPas by the methyl silicone rubber at room temperature cure viscosity of each viscosity, viscosity, nm-class active calcium carbonate, calcium carbonate, silicon-dioxide adds vacuum kneader, heat up and stir, start to vacuumize dehydration at 100 DEG C, then temperature 120 DEG C, vacuum tightness be-0.07MPa, rotating speed stirs under being 500rpm condition and makes base-material in 3 hours;
(2) be that 201 methyl-silicone oils of 200mPas mix by carbon black, viscosity, make base-material carbon black;
(3) on gained base-material, shredder carries out being ground to fineness≤50 μm, then methyl tributanoximo silane, di-n-butyltin dilaurate, aminopropyl triethoxysilane, propyl trimethoxy silicane, base-material carbon black is added, in high speed dispersor, temperature 100 DEG C, vacuum tightness are under-0.08MPa, 50rpm condition, stir and make finished product in 1 hour, get final product discharging.
embodiment 3
The present embodiment silicone weatherproof sealant comprises the raw material of following weight part: viscosity is the methyl silicone rubber at room temperature cure 60 parts of 15000mPas, viscosity is the methyl silicone rubber at room temperature cure 160 parts of 70000mPas, viscosity is 201 methyl-silicone oil 15 parts of 400mPas, viscosity is 201 methyl-silicone oil 45 parts of 100mPas, nm-class active calcium carbonate 210 parts, 90 parts, calcium carbonate, silicon-dioxide 30 parts, methyl tributanoximo silane 40 parts, di-n-butyltin dilaurate 10 parts, aminopropyl triethoxysilane 2 parts, propyl trimethoxy silicane 3 parts, carbon black 20 parts.
Prepared by following steps:
(1) be 201 methyl-silicone oils of 400mPas by the methyl silicone rubber at room temperature cure viscosity of each viscosity, viscosity, nm-class active calcium carbonate, calcium carbonate, silicon-dioxide adds vacuum kneader, heat up and stir, start to vacuumize dehydration at 100 DEG C, then temperature 200 DEG C, vacuum tightness be-0.1MPa, rotating speed stirs under being 600rpm condition and makes base-material in 4 hours;
(2) be that 201 methyl-silicone oils of 100mPas mix by carbon black, viscosity, make base-material carbon black;
(3) on gained base-material, shredder carries out being ground to fineness≤50 μm, then methyl tributanoximo silane, di-n-butyltin dilaurate, aminopropyl triethoxysilane, propyl trimethoxy silicane, base-material carbon black is added, in high speed dispersor, temperature 120 DEG C, vacuum tightness are under-0.12MPa, 60rpm condition, stir and make finished product in 1.5 hours, get final product discharging.
embodiment 4
The present embodiment silicone weatherproof sealant comprises the raw material of following weight part: viscosity is the methyl silicone rubber at room temperature cure 50 parts of 20000mPas, viscosity is the methyl silicone rubber at room temperature cure 160 parts of 80000mPas, viscosity is 201 methyl-silicone oil 8 parts of 500mPas, viscosity is 201 methyl-silicone oil 45 parts of 100mPas, nm-class active calcium carbonate 180 parts, 90 parts, calcium carbonate, silicon-dioxide 20 parts, methyl tributanoximo silane 40 parts, di-n-butyltin dilaurate 7 parts, aminopropyl triethoxysilane 2 parts, propyl trimethoxy silicane 1 part, titanium dioxide 20 parts.
Prepared by following steps:
(1) be the methyl silicone rubber at room temperature cure viscosity of 20000mPas by viscosity, the viscosity methyl silicone rubber at room temperature cure that is 80000mPas, viscosity 201 methyl-silicone oils that are 500mPas, nm-class active calcium carbonate, calcium carbonate, silicon-dioxide adds vacuum kneader, heat up and stir, start to vacuumize dehydration at 100 DEG C, then temperature 160 DEG C, vacuum tightness be-0.08MPa, rotating speed stirs under being 550rpm condition and makes base-material in 3.5 hours;
(2) be that 201 methyl-silicone oils of 100mPas mix by titanium dioxide carbon black, viscosity, make base-material titanium dioxide;
(3) on gained base-material, shredder carries out being ground to fineness≤50 μm, then methyl tributanoximo silane, di-n-butyltin dilaurate, aminopropyl triethoxysilane, propyl trimethoxy silicane, base-material titanium dioxide is added, in high speed dispersor, temperature 110 DEG C, vacuum tightness are under-0.1MPa, 55rpm condition, stir and make finished product in 1 hour, get final product discharging.
embodiment 5
The present embodiment silicone weatherproof sealant comprises the raw material of following weight part: viscosity is the methyl silicone rubber at room temperature cure 60 parts of 20000mPas, viscosity is the methyl silicone rubber at room temperature cure 130 parts of 80000mPas, viscosity is 201 methyl-silicone oil 15 parts of 500mPas, viscosity is 201 methyl-silicone oil 22 parts of 100mPas, nm-class active calcium carbonate 210 parts, 70 parts, calcium carbonate, silicon-dioxide 30 parts, methyl tributanoximo silane 20 parts, di-n-butyltin dilaurate 10 parts, aminopropyl triethoxysilane 1 part, propyl trimethoxy silicane 3 parts, titanium dioxide 10 parts.
Prepared by following steps:
(1) be the methyl silicone rubber at room temperature cure viscosity of 20000mPas by viscosity, the viscosity methyl silicone rubber at room temperature cure that is 80000mPas, viscosity 201 methyl-silicone oils that are 500mPas, nm-class active calcium carbonate, calcium carbonate, silicon-dioxide adds vacuum kneader, heat up and stir, start to vacuumize dehydration at 100 DEG C, then temperature 180 DEG C, vacuum tightness be-0.09MPa, rotating speed stirs under being 580rpm condition and makes base-material in 3.5 hours;
(2) be that 201 methyl-silicone oils of 100mPas mix by titanium dioxide carbon black, viscosity, make base-material titanium dioxide;
(3) on gained base-material, shredder carries out being ground to fineness≤50 μm, then methyl tributanoximo silane, di-n-butyltin dilaurate, aminopropyl triethoxysilane, propyl trimethoxy silicane, base-material titanium dioxide is added, in high speed dispersor, temperature 120 DEG C, vacuum tightness are under-0.11MPa, 58rpm condition, stir and make finished product in 1 hour, get final product discharging.
the examination and test of products
Test to embodiment 1 ~ 5 products obtained therefrom below, assay is as follows:
Operative norm: JC/T882-2001; Laboratory standard condition: temperature 23 DEG C ± 2 DEG C humidity: 50% ± 5%; Test substrate is glass, anodic oxidation aluminium sheet; The principle of solidification is the moisture by absorbing in air;
Table 1 embodiment 1 ~ 5 products obtained therefrom performance test results
。
The present invention is not limited to above-mentioned embodiment, and those skilled in the art also can make multiple change accordingly, but to be anyly equal to the present invention or similar change all should be encompassed in the scope of the claims in the present invention.
Claims (5)
1. a silicone weatherproof sealant, it is characterized in that, comprise the raw material of following weight part: viscosity is the methyl silicone rubber at room temperature cure 50 ~ 60 parts of 15000 ~ 25000 mPas, viscosity is the methyl silicone rubber at room temperature cure 130 ~ 160 parts of 70000 ~ 90000 mPas, viscosity is 201 methyl-silicone oil 8 ~ 15 parts of 400 ~ 500 mPas, viscosity is 201 methyl-silicone oil 22 ~ 45 parts of 100 ~ 200 mPas, nm-class active calcium carbonate 180 ~ 210 parts, 70 ~ 90 parts, calcium carbonate, silicon-dioxide 20 ~ 30 parts, methyl tributanoximo silane 20 ~ 40 parts, di-n-butyltin dilaurate 5 ~ 10 parts, aminopropyl triethoxysilane 1 ~ 2 part, propyl trimethoxy silicane 1 ~ 3 part, pigment 10 ~ 20 parts.
2. silicone weatherproof sealant according to claim 1, it is characterized in that, comprise the raw material of following weight part: viscosity is the methyl silicone rubber at room temperature cure 55 parts of 20000 mPas, viscosity is the methyl silicone rubber at room temperature cure 145 parts of 80000 mPas, viscosity is 201 methyl-silicone oil 10 parts of 500 mPas, viscosity is 201 methyl-silicone oil 37.5 parts of 100 mPas, nm-class active calcium carbonate 200 parts, 75 parts, calcium carbonate, silicon-dioxide 25 parts, methyl tributanoximo silane 30 parts, di-n-butyltin dilaurate 7 parts, aminopropyl triethoxysilane 1 part, propyl trimethoxy silicane 1.5 parts, pigment 15 parts.
3. silicone weatherproof sealant according to claim 2, is characterized in that, described pigment is carbon black or titanium dioxide.
4. a preparation method for silicone weatherproof sealant described in any one of claim 1 ~ 3, is characterized in that, comprise the following steps:
Be 201 methyl-silicone oils of 400 ~ 500 mPas by the methyl silicone rubber at room temperature cure of each viscosity, viscosity, nm-class active calcium carbonate, calcium carbonate, silicon-dioxide adds vacuum kneader, heat up and stir, from 80 ~ 100 DEG C, vacuumize dehydration, then temperature 100 ~ 200 DEG C, vacuum tightness be-0.07 ~-0.1MPa, rotating speed stirs under being 500 ~ 600rpm condition and makes base-material in 3 ~ 4 hours;
Be that 201 methyl-silicone oils of 100 ~ 200 mPas mix by pigment, viscosity, make base pigment;
On gained base-material, shredder carries out being ground to fineness≤50 μm, then methyl tributanoximo silane, di-n-butyltin dilaurate, aminopropyl triethoxysilane, propyl trimethoxy silicane, base pigment is added, under temperature 100 ~ 120 DEG C, vacuum tightness-0.08 ~-0.12MPa, 50 ~ 60rpm condition, stir in high speed dispersor and make finished product in 1 ~ 1.5 hour, get final product discharging.
5. the preparation method of silicone weatherproof sealant according to claim 4, is characterized in that: described shredder is three-roll grinder.
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| CN105199660A (en) * | 2014-06-15 | 2015-12-30 | 朱志华 | Preparation method of high-performance neutral adhesive glue |
| CN105419721A (en) * | 2015-12-15 | 2016-03-23 | 河南硅宝能源科技有限公司 | Special flow type silicone sealant for road |
| CN105462538A (en) * | 2015-12-15 | 2016-04-06 | 河南硅宝能源科技有限公司 | Silicone sealant special for non-flowing type road |
| CN106479430A (en) * | 2016-11-02 | 2017-03-08 | 嘉善天胶装饰材料有限公司 | A kind of high-temp glue and preparation method thereof |
| CN106634798A (en) * | 2016-11-02 | 2017-05-10 | 嘉善天胶装饰材料有限公司 | Fireproof glue and manufacturing method thereof |
| CN108148545A (en) * | 2016-12-06 | 2018-06-12 | 威海成景科技有限公司 | The production method of Halogen high-performance refractory silicone sealant |
| CN110117478A (en) * | 2019-03-13 | 2019-08-13 | 重庆天旗实业有限公司 | A kind of neutral silicone weather proofing sealant and preparation method thereof |
| CN115584238A (en) * | 2022-11-28 | 2023-01-10 | 唐山三孚纳米材料有限公司 | Pure white sealant prepared from single-component room temperature vulcanized silicone rubber and preparation method thereof |
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| JPH05140458A (en) * | 1991-11-20 | 1993-06-08 | Toray Dow Corning Silicone Co Ltd | Moisture-curing silicone-base pressure-sensitive adhesive composition |
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| CN101812281A (en) * | 2009-10-23 | 2010-08-25 | 郑州中原应用技术研究开发有限公司 | Sealant with neutral and transparent silicone structure |
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