CN101544831A - Double component room temperature vulcanization silicon rubber sealant material and preparation method thereof - Google Patents
Double component room temperature vulcanization silicon rubber sealant material and preparation method thereof Download PDFInfo
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- CN101544831A CN101544831A CN200910061739A CN200910061739A CN101544831A CN 101544831 A CN101544831 A CN 101544831A CN 200910061739 A CN200910061739 A CN 200910061739A CN 200910061739 A CN200910061739 A CN 200910061739A CN 101544831 A CN101544831 A CN 101544831A
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Abstract
The invention relates to a double component room temperature vulcanization silicon rubber sealant material. The material comprises the following components by weight portion: 100 portions of 107 base, 1 to 10 portions of crosslinking agent, 0.1 to 1 portion of chain extender, 15 to 50 portions of reinforcement filler, 0.1 to 0.5 portion of catalyst, 20 to 80 portions of plasticizer and 1 to 5 portions of tackifier. A preparation method for the material comprises the following steps: adding the 107 base and the reinforcement filler into a planet agitator after weighing; turning on the agitator, agitating the mixture and raising the temperature to 100 DEG C, milling the mixture at 100 DEG C for 0.8 to 1.2 hours, and then carrying out vacuum pumping; reducing the temperature to 60 DEG C, adding the additives of the plasticizer and the tackifier proportionately, and continuing to carry out the vacuum pumping and milling for 25 to 30 minutes; discharging the material to obtain a component A; mixing evenly the crosslinking agent, the chain extender and the catalyst proportionately to obtain a component B; and mixing the component A and the component B according to the ratio of 1:0.01-0.03. The material has self-levelling property, high strength of bonding with basic material and simple construction, and can be applied to the fields of traffic and building.
Description
Technical field
The present invention relates to the sealing material field, be specifically related to a kind of low modulus, high elongation rate gravity flow flat pattern double component room temperature vulcanization silicon rubber sealant material and preparation method thereof.
Background technology
Former for adaptive temperature variation and uneven settlement of foundation etc. thereby cause distortion is provided with the expansion joint usually in buildings.Seam is the weak link in the fabric structure, and its weather resistance and load transfer ability directly influence its use properties.In order to prevent that infiltration and foreign matter from gathering in the slit, hinder the normal flexible of seam, must seal by butt seam.The main effect of joint filling seal gum is that anti-sealing and foreign material enter in the expansion joint, to guarantee plate free movement when expanding with heat and contract with cold, avoids constructure body structure to suffer damage, and guarantees its functional quality and life-span.Traditional expansion joint sealing material exists as sealing materials such as: pitch class, chloroprene rubber, poly-sulphur and polyurethaness that ageing resistance is poor, work-ing life is poor, problems such as, resist displacement deformability deficiency low to the base material cohesive strength, the complexity of constructing.
About low modulus high elongation rate organosilicon sealing material, report was once arranged both at home and abroad, as: it is that basic glue, acetoxysilane are that linking agent, zinc or zirconium compounds are catalyzer with the end capped polysiloxane of silanol that the patent documentation of U.S. U.S.P.4410677 discloses a kind of, in system, add non-reactive silicone oil simultaneously and make the low modulus organosilicon sealing material, and regulate the method for modulus by regulating silicon oil dosage.It is basic glue with organopolysiloxane that the patent documentation of China CN200510061665.4 discloses a kind of, realize low modulus with ketoximinosilanes as chainextender, high elongation rate improves mechanical property as tackifier and to the method for the cohesive strength of base material with the silane coupling agent of cyano-containing and secondary amino group.It is basic glue with dialkyl polydimethylsiloxane that China CN200410040799.3 patent documentation discloses a kind of, and tolylene diisocyanate makes the method for low modulus, high elongation rate silicone sealant as tackifier by chainextender; Its problem is that to adopt tolylene diisocyanate to make tackifier toxic to environment.
Above-described each patent relates generally to aspects such as organosilicon sealing material low modulus, high elongation rate, but does not relate to the self-leveling of material.
Summary of the invention
Technical problem to be solved by this invention is: a kind of low modulus, high elongation rate gravity flow flat pattern double component room temperature vulcanization silicon rubber sealing material are provided, and this material use properties excellence can be widely used in traffic and building field, and preparation technology is simple simultaneously.
The present invention solves its technical problem and adopts following technical scheme:
Double component room temperature vulcanization silicon rubber sealant material provided by the invention, its raw material by following weight part is made: 100 parts in 107 basic glue, 1～10 part of linking agent, 0.1～1 part of chainextender, 15～50 parts of reinforced fillings, 0.1～0.5 part of catalyzer, 20～80 parts in softening agent, 1～5 part of tackifier.
Above-mentioned double component room temperature vulcanization silicon rubber sealant material provided by the invention, its preparation method is: earlier 107 basic glue and reinforced filling metering back are dropped in the planetary mixer, start to stir and be warming up to 100 ℃, and vacuumize after mixing 0.8～1.2 hour in 100 ℃; Be cooled to 60 ℃, add softening agent, tackifier auxiliary agent in proportion, continued pumping vacuum and mixing 25～30 minutes; Discharging obtains component A; Linking agent, chainextender and catalyst by proportion are mixed, obtain B component; A, B component are obtained described material according to 1:0.01～0.03 mixed, and preferable blending ratio is 1:0.01 or 1:0.03.
The present invention compared with prior art has following main advantage:
1. have excellent weather, ageing-resistant and high and low temperature resistance: in-50 ℃ of-200 ℃ of temperature ranges, can keep good elasticity.
2. has good adhesive property: have good cohesiveness with various seams, even adhesive surface also difficult drop-off under immersion, chemical corrosion, freeze-thaw cycle condition.
3. have low modulus, high elongation characteristics: this performance can make this sealant material can bear level or the great displacement of vertical direction between the base material plate well, has good flexible restorability.
4. but application property excellence: when having the low modulus high elongation characteristics, the sealing glue material has good self-leveling, but the application property excellence.
5. be convenient to store: be two component sealing gum materials, stability in storage excellence, the result who has avoided the single-component sealing material to lose efficacy for a long time because of storage period.
6. in preparation process, owing to adopted and had non-reacted silicone oil of synergistic softening agent and amide group chainextender, and with silane coupling agent as tackifier, therefore make the sealant material of preparation have above-mentioned performance, the preparation method is simple simultaneously, is easy to promote.
In a word, silicone rubber seal material provided by the invention has excellent weather-proof, ageing resistance, good resist displacement deformability, and with base material cohesive strength height and have self-leveling, construction technology is simple, can be widely used in traffic and building field.
Embodiment
Below in conjunction with embodiment seat of the present invention is further specified, but do not limit the present invention.
Embodiment 1: low modulus high elongation rate gravity flow flat pattern double component room temperature vulcanization silicon rubber sealing material
In 107 basic glue: linking agent: chainextender: tackifier: softening agent: reinforced filling: catalyzer is that the ratio of 100:5:0.2:1:20:15:0.3 is formed with the weight part.
Embodiment 2: low modulus high elongation rate gravity flow flat pattern double component room temperature vulcanization silicon rubber sealing material
In 107 basic glue: linking agent: chainextender: tackifier: softening agent: reinforced filling: catalyzer is that the ratio of 100:1:0.2:1:20:30:0.3 is formed with the weight part.
Embodiment 3: low modulus high elongation rate gravity flow flat pattern double component room temperature vulcanization silicon rubber sealing material
In 107 basic glue: linking agent: chainextender: tackifier: softening agent: reinforced filling: catalyzer is that the ratio of 100:5:0.3:3:50:20:0.3 is formed with the weight part.
Embodiment 4: low modulus high elongation rate gravity flow flat pattern double component room temperature vulcanization silicon rubber sealing material
In 107 basic glue: linking agent: chainextender: tackifier: softening agent: reinforced filling: catalyzer is that the ratio of 100:1:1:4:50:15:0.4 is formed with the weight part.
Embodiment 5: low modulus high elongation rate gravity flow flat pattern double component room temperature vulcanization silicon rubber sealing material
In 107 basic glue: linking agent: chainextender: tackifier: softening agent: reinforced filling: catalyzer is that the ratio of 100:5:0.8:5:80:30:0.5 is formed with the weight part.
Embodiment 6: low modulus high elongation rate gravity flow flat pattern double component room temperature vulcanization silicon rubber sealing material
In 107 basic glue: linking agent: chainextender: tackifier: softening agent: reinforced filling: catalyzer is that the ratio of 100:10:0.1:3:60:50:0.1 is formed with the weight part.
The described preparation methods of the foregoing description is: earlier will 107 basic glue and reinforced filling metering back drop in the planetary mixer, start to stir and be warming up to 100 ℃, and vacuumize after mixing 0.8～1.2 hour in 100 ℃; Be cooled to 60 ℃, add softening agent, tackifier auxiliary agent in proportion, continued pumping vacuum and mixing 25～30 minutes; Discharging obtains component A; Linking agent, chainextender and catalyst by proportion are mixed, obtain B component; A, B component are got final product after according to 1:0.01～0.03 mixed.
Described linking agent is a kind of in methyl tributanoximo silane, the vinyl tributanoximo silane, or two kinds.
Described chainextender is a methyl ethylene amide group silane, perhaps a kind of in the dimethyl hydroxylamine base silane, or two kinds.
Described reinforced filling is the precipitator method or the vapor phase process SiO2 that handled by organic agent, and organic agent is a hexamethyldisilazane.
Described catalyzer is a kind of in toxilic acid tin octylate, the dibutyl tin laurate, or two kinds.
Described softening agent is non-reacted dimethyl silicone oil, and perhaps MDT type silicone oil is a kind of, or two kinds.
Described tackifier are a kind of among KH550, KH560, the KH570, or multiple.
The present invention adopts " " construction sealing materials testing method " 13477-2002 " of country's promulgation to come the described material of the foregoing description is tested, and its test result is asked for an interview table 1.
Subordinate list
Table 1 test result
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Surface drying time (min) | 35 | 30 | 32 | 28 | 22 | 46 |
| Tensile modulus (MPa) | 0.41 | 0.28 | 0.27 | 0.29 | 0.35 | 0.38 |
| Elongation at break (%) | 801.2 | 786.5 | 795.3 | 872.0 | 845.2 | 810.3 |
| Cohesive strength (MPa) | 0.25 | 0.28 | 0.32 | 0.35 | 0.42 | 0.36 |
| Self-leveling | Very | Very | Very | Excellent | Excellent | Excellent |
Claims (9)
1. a double component room temperature vulcanization silicon rubber sealant material is characterized in that being made by the raw material of following weight part: 100 parts in 107 basic glue, 1～10 part of linking agent, 0.1～1 part of chainextender, 15～50 parts of reinforced fillings, 0.1～0.5 part of catalyzer, 20～80 parts in softening agent, 1～5 part of tackifier.
2. material as claimed in claim 1 is characterized in that described linking agent is one or both in methyl tributanoximo silane or the vinyl tributanoximo silane.
3. material as claimed in claim 1 is characterized in that described chainextender is a methyl ethylene amide group silane.
4. material as claimed in claim 1 is characterized in that the SiO of described reinforced filling for handling by organic agent
2, organic agent is a hexamethyldisilazane.
5. material as claimed in claim 1 is characterized in that described catalyzer is a kind of in toxilic acid tin octylate or the dibutyl tin laurate, or two kinds.
6. material as claimed in claim 1 is characterized in that described softening agent is non-reacted dimethyl silicone oil.
7. material as claimed in claim 1 is characterized in that described tackifier are a kind of among KH550, KH560, KH570, the WD-20, or multiple.
8. one kind as preparation methods as described in arbitrary claim in the claim 1 to 7, it is characterized in that: earlier 107 basic glue and reinforced filling metering back are dropped in the planetary mixer, start to stir and be warming up to 100 ℃, and vacuumize after mixing 0.8～1.2 hour in 100 ℃; Be cooled to 60 ℃, add softening agent, tackifier auxiliary agent in proportion, continued pumping vacuum and mixing 25～30 minutes; Discharging obtains component A; Linking agent, chainextender and catalyst by proportion are mixed, obtain B component; A, B component are obtained described material after according to 1:0.01～0.03 mixed.
9. material as claimed in claim 1 is characterized in that: with A, B component according to the 1:0.03 mixed.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928462A (en) * | 2010-09-10 | 2010-12-29 | 烟台德邦科技有限公司 | Acetone-removing silicon rubber and preparation method thereof |
| CN101993590A (en) * | 2010-11-01 | 2011-03-30 | 深圳市森日有机硅材料有限公司 | Silicone rubber putty and preparation method thereof |
| CN102304345A (en) * | 2011-08-25 | 2012-01-04 | 文仁光 | Composition of double-component organosilicon photovoltaic component sealant, and preparation method thereof |
| CN102516931A (en) * | 2011-12-07 | 2012-06-27 | 北京天山新材料技术股份有限公司 | Ketoxime-alcohol removal type room-temperature vulcanized silicon rubber sealant and preparation method thereof |
| CN103665880A (en) * | 2013-11-29 | 2014-03-26 | 无锡江南电缆有限公司 | Double-component room-temperature vulcanization type ceramic fire-resistant silicon rubber coating material as well as preparation method and application thereof |
| CN105086926A (en) * | 2015-09-09 | 2015-11-25 | 蓝星（成都）新材料有限公司 | Flexible organosilicone sealant for LED package and preparation method thereof |
| CN105112003A (en) * | 2015-09-09 | 2015-12-02 | 蓝星（成都）新材料有限公司 | Double-component low-modulus organosilicon sealant for LED (light-emitting diode) packaging and preparation method thereof |
| CN105131606A (en) * | 2015-10-19 | 2015-12-09 | 无锡清杨机械制造有限公司 | Method for improving heat resistance of silica gel |
| CN105400199A (en) * | 2015-11-04 | 2016-03-16 | 武汉轻工大学 | Modified rice hull ash-silicone rubber composite material and preparation method thereof |
| CN108084955A (en) * | 2017-12-20 | 2018-05-29 | 浙江中天氟硅材料有限公司 | Concrete joint one-component Self-leveling silicone seal glue composition and fluid sealant and preparation method thereof |
| CN110093035A (en) * | 2019-03-16 | 2019-08-06 | 兴化市戴窑镇永生橡胶制品厂 | A kind of strong mechanical performance room temperature vulcanized silicone rubber and preparation method thereof |
| CN111334044A (en) * | 2020-04-22 | 2020-06-26 | 中国工程物理研究院电子工程研究所 | Organic silicone gel for precise electronic component encapsulation and use method thereof |
-
2009
- 2009-04-22 CN CN200910061739A patent/CN101544831A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928462A (en) * | 2010-09-10 | 2010-12-29 | 烟台德邦科技有限公司 | Acetone-removing silicon rubber and preparation method thereof |
| CN101928462B (en) * | 2010-09-10 | 2012-05-02 | 烟台德邦科技有限公司 | Acetone-removing silicon rubber and preparation method thereof |
| CN101993590A (en) * | 2010-11-01 | 2011-03-30 | 深圳市森日有机硅材料有限公司 | Silicone rubber putty and preparation method thereof |
| CN101993590B (en) * | 2010-11-01 | 2012-03-28 | 深圳市森日有机硅材料有限公司 | Silicone rubber putty and preparation method thereof |
| WO2012058953A1 (en) * | 2010-11-01 | 2012-05-10 | 深圳市森日有机硅材料有限公司 | Silicone rubber putty and preparation method therefor |
| CN102304345A (en) * | 2011-08-25 | 2012-01-04 | 文仁光 | Composition of double-component organosilicon photovoltaic component sealant, and preparation method thereof |
| CN102304345B (en) * | 2011-08-25 | 2013-08-14 | 文仁光 | Composition of double-component organosilicon photovoltaic component sealant, and preparation method thereof |
| CN102516931A (en) * | 2011-12-07 | 2012-06-27 | 北京天山新材料技术股份有限公司 | Ketoxime-alcohol removal type room-temperature vulcanized silicon rubber sealant and preparation method thereof |
| CN103665880A (en) * | 2013-11-29 | 2014-03-26 | 无锡江南电缆有限公司 | Double-component room-temperature vulcanization type ceramic fire-resistant silicon rubber coating material as well as preparation method and application thereof |
| CN103665880B (en) * | 2013-11-29 | 2016-08-17 | 无锡江南电缆有限公司 | Double-component room-temperature vulcanization type fire-resisting ceramic silicone rubber coating material, preparation method and applications |
| CN105086926A (en) * | 2015-09-09 | 2015-11-25 | 蓝星（成都）新材料有限公司 | Flexible organosilicone sealant for LED package and preparation method thereof |
| CN105112003A (en) * | 2015-09-09 | 2015-12-02 | 蓝星（成都）新材料有限公司 | Double-component low-modulus organosilicon sealant for LED (light-emitting diode) packaging and preparation method thereof |
| CN105131606A (en) * | 2015-10-19 | 2015-12-09 | 无锡清杨机械制造有限公司 | Method for improving heat resistance of silica gel |
| CN105400199A (en) * | 2015-11-04 | 2016-03-16 | 武汉轻工大学 | Modified rice hull ash-silicone rubber composite material and preparation method thereof |
| CN108084955A (en) * | 2017-12-20 | 2018-05-29 | 浙江中天氟硅材料有限公司 | Concrete joint one-component Self-leveling silicone seal glue composition and fluid sealant and preparation method thereof |
| CN110093035A (en) * | 2019-03-16 | 2019-08-06 | 兴化市戴窑镇永生橡胶制品厂 | A kind of strong mechanical performance room temperature vulcanized silicone rubber and preparation method thereof |
| CN111334044A (en) * | 2020-04-22 | 2020-06-26 | 中国工程物理研究院电子工程研究所 | Organic silicone gel for precise electronic component encapsulation and use method thereof |
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Open date: 20090930 |