CN1087763C - Double-component polyurethane paste for sealing in building and its production process - Google Patents
Double-component polyurethane paste for sealing in building and its production process Download PDFInfo
- Publication number
- CN1087763C CN1087763C CN 98113700 CN98113700A CN1087763C CN 1087763 C CN1087763 C CN 1087763C CN 98113700 CN98113700 CN 98113700 CN 98113700 A CN98113700 A CN 98113700A CN 1087763 C CN1087763 C CN 1087763C
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- dibutyl phthalate
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Abstract
The present invention provides a double-component polyurethane sealant for buildings, which is made from an A component and a B component which are mixed, wherein the A component comprises 189 to 191 parts of polyether 5613, 36 to 38 parts of dibutyl phthalate and 6 to 8 parts of isocyanate; the B component comprises 18.5 to 20 parts of refined castor oil, 15 to 17 pats of dicarboxylic acid dibutyl ester, 0.5 to 1.5 parts of silicon oil, 0.5 to 1.5 parts of coupling agents, 20 to 30 parts of wash oil, 35 to 45 parts of limestone powder, 35 to 45 parts of talcum powder, 35 to 45 parts of light calcium carbonate, 16 to 20 parts of titanium white powder and 0.5 to 1.5 parts of stannous octoate. The process is mainly characterized in that the processes such as middle baking, etc. are canceled, and the filling material, the crosslinking agent and the auxiliary agent are dewatered together. The sealant has the advantages of good bonding performance and long service life which can reach more than 30 years.
Description
The present invention relates to a kind of construction sealant and production technique, belong to the chemical building material class.
At present, the used sealing material of buildings mostly is low-grade oily materials such as PVC plastic ointment, and this material property is poor, uses and promptly can cause buildings leakage soon.It is big that the existing B of production component analogous products need to add behind the dryer coupling agent, auxiliary agent, facility investment, the energy consumption height, and the production cycle is long, so the cost height.
The objective of the invention is to select rational formula, adopt simple process to produce the bonding force height, ageing-resistant, flexible, the construction sealant of long service life.
Technical scheme of the present invention is to realize like this.Divide A, B two kinds of combination formulas, adopt different technology to mix when processing and packing uses respectively, two composition branches and proportioning are as follows: A component: Soxylat A 25-7-5613:189～191
Dibutyl phthalate: 36～38
Isocyanic ester: 6～8 B components: refining sesame oil: 18.5～20
Dibutyl phthalate: 15～17
Methyl-silicone oil: 0.5～1.5
Aminopropyl triethoxysilane: 0.5～1.5 trade(brand)name: silane coupling agent (WD-50)
Washing oil: 20～30
Water-ground limestone: 35～45 trade(brand)names: dry powder
Talcum powder: 35～45
Light calcium carbonate: 35～45
Titanium dioxide: 16～20
Stannous octoate: 0.5～1.5
The production technique of above-mentioned construction sealant, the A component is: add each component by said ratio and stir in reactor, being warming up to 90 ° ± 2 ℃ synthesizes, 1.5～2 hours reaction times, cooling can packed below 50 ℃ in discharging, sampling analysis isocyano (NCO) content 3.5～4.5% before the packing, the B component is: go into earlier refining sesame oil in (by said ratio) in reactor, heat up and stir, progressively adding dry powder is water-ground limestone, talcum powder, light calcium carbonate, titanium dioxide and dibutyl phthalate are warmed up to 95 ° ± 5 ℃ and open the vacuum pump dehydration, keep vacuum more than the 500mm mercury slug, stir dehydration more than 1.5 hours, be cooled to 80 ℃, add silicone oil more successively, washing oil, stannous octoate, silane coupling agent, continue to stir 1 hour as aminopropyl triethoxysilane, naturally cool to 50 ℃ of discharging packings.
Advantage of the present invention is that prescription is reasonable, performance index can reach: surface drying≤4 hour, do solid work≤12, hour rate of extrusion＜30 second, elongation 〉=300%, bonding force＞1.5KN/M, hardness (Shao Shi) 25～30, resistance to fatigue ± 12.5%, life-span can reach more than 30 years, and construction is easily simple.Generally production technique, particularly B are organized, and will dry after the dehydration, and facility investment is big like this, and the energy consumption height needs cooling again, easily cause the filler moisture absorption in cooling and the branch process of assembling.This technology is taked filler and linking agent, auxiliary agent mixing dehydration together, once product, saved technological process such as intermediate baking and not only guaranteed quality but also shortened the production cycle greatly, reduced energy consumption and cost.
Embodiments of the invention such as above-mentioned technical scheme provide.During use with two kinds of components of A, B by A: B=1: 2 mix and can construct.Can be widely used in Highrise buildings, motorway, bridge, all concrete such as airport, brick construction occasion.
Claims (2)
1, a kind of double-component polyurethane paste for sealing in building is used by the product mixing of A, two kinds of components of B, and the composition and the proportioning of each component are as follows: A component: Soxylat A 25-7-5613:189～191
Dibutyl phthalate: 36～38
Isocyanic ester: 6～8B component: refining sesame oil: 18.5～20
Dibutyl phthalate: 15～17
Methyl-silicone oil: 0.5～1.5
Aminopropyl triethoxysilane: 0.5～1.5
Washing oil: 20～30
Water-ground limestone: 35～45
Talcum powder: 35～45
Light calcium carbonate: 35～45
Titanium dioxide: 16～20
Stannous octoate: 0.5～1.5A component is A: B=1 with the amount ratio of B component: 2.
2, a kind of production technique of pressing the construction sealant of claim 1, the A component is: add each component by described proportioning and stir in reactor, being warming up to 90 ° ± 2 ° synthesizes, 1.5～2 hours reaction times, cooling can packed below 50 ° in discharging, the content 3.5～4.5% of sampling analysis isocyano before the packing, the B component is: also add refining sesame oil earlier by the proportioning that provides in reactor, heat up and stir, progressively add water-ground limestone, talcum powder, light calcium carbonate, titanium dioxide and dibutyl phthalate are warmed up to 95 ° ± 5 ° and open the vacuum pump dehydration, keep vacuum more than the 500mm mercury slug, stir dehydration more than 1.5 hours, be cooled to 80 ℃, add silicone oil successively, washing oil, stannous octoate, the silane coupling agent aminopropyl triethoxysilane continues to stir 1 hour, naturally cool to 50 ℃ of discharging packings, A component during use: B component=1: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113700 CN1087763C (en) | 1998-09-11 | 1998-09-11 | Double-component polyurethane paste for sealing in building and its production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113700 CN1087763C (en) | 1998-09-11 | 1998-09-11 | Double-component polyurethane paste for sealing in building and its production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1247882A CN1247882A (en) | 2000-03-22 |
| CN1087763C true CN1087763C (en) | 2002-07-17 |
Family
ID=5223407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98113700 Expired - Fee Related CN1087763C (en) | 1998-09-11 | 1998-09-11 | Double-component polyurethane paste for sealing in building and its production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1087763C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10257696A1 (en) * | 2002-12-11 | 2004-06-24 | Solvay Soda Deutschland Gmbh | Ultradry calcium carbonate useful as rheology-controlling additive in sealants and adhesives |
| CN100381535C (en) * | 2006-02-28 | 2008-04-16 | 成都硅宝科技实业有限责任公司 | Anti-fouling single-component room temperature sealing silicone sulfide glue and its production process |
| CN101613587B (en) * | 2008-06-24 | 2012-04-18 | 上海天补建筑科技有限公司 | Polyurethane sealing glue |
| CN101613193B (en) * | 2008-06-24 | 2012-07-04 | 上海天补建筑科技有限公司 | Material for repairing building cracks and splicing prefabricated wallboard |
| CN101805588B (en) * | 2010-03-05 | 2013-09-11 | 中科院广州化灌工程有限公司 | Polyurethane road caulking sealant with good durability and production process |
| CN105294044A (en) * | 2015-10-30 | 2016-02-03 | 桂林市和鑫防水装饰材料有限公司 | High-strength polyurethane construction sealant |
-
1998
- 1998-09-11 CN CN 98113700 patent/CN1087763C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1247882A (en) | 2000-03-22 |
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