CN101613587B - Polyurethane sealing glue - Google Patents
Polyurethane sealing glue Download PDFInfo
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- CN101613587B CN101613587B CN200810043539XA CN200810043539A CN101613587B CN 101613587 B CN101613587 B CN 101613587B CN 200810043539X A CN200810043539X A CN 200810043539XA CN 200810043539 A CN200810043539 A CN 200810043539A CN 101613587 B CN101613587 B CN 101613587B
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Abstract
The invention belongs to the technical field of building materials, and particularly relates to polyurethane sealing glue. The polyurethane sealing glue is characterized in that the polyurethane sealing glue consists of component A and component B, and the ratio of the component A to the component B in portion by weight is 1:1-10, wherein the component A is polyurethane prepolymer; and the component B comprises the following compositions in portion by weight: 16 to 30 portions of polyether polyol, 2 to 15 portions of plasticizer, 40 to 70 portions of filler, 0.1 to 2 portions of catalyst, and0.1 to 2 portions of thixotropic agent. The polyurethane sealing glue has the advantages of good abrasion resistance, low-temperature flexibility, wide performance adjustable range, large mechanical strength, good adhesive property, good elasticity, good rebound resilience, good weather resisting property, good oil resistivity and biological ageing resistance, is suitable for dynamic joint, and does not contain volatile solvent and other small molecular substances; the service life of the polyurethane sealing glue can reach 15 to 20 years; and the solid content of the polyurethane sealing glue is 100 percent.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of polyurethane sealant.
Background technology
Sealer is the material that is used for filling space (hole, joint, seam etc.).Amorphous sealer is the main body of sealing material; Kind has organosilicon (comprising modified organic silicon) class, polyurethanes, thiorubber class, esters of acrylic acid, SBR rubber-like, butyl type rubber, pitch, oiliness caulk compound class etc., and the sealer that uses the earliest has pitch class, oiliness caulk compound etc.And be used to fill must stand to shake or rising-heat contracting-cold etc. due to have retractility the gap, then must adopt elastic sealant.Over more than 30 year, the application of elastic sealant in many industry, civil areas such as building, building, automobile, boats and ships, electrical more and more widely, wherein fluid sealant for construction has the call.Elastic sealant is with bonding and two kinds of products that function rolls into one of sealing.Wherein three of better performances types of high-grade elastic sealants are respectively organosilicon sealant, polysulfide sealant and polyurethane sealant.Wherein the over-all properties of polyurethane sealant is better, moderate cost, and this is its widely-used favourable condition that provides under construction.
Polyurethane sealant (polyurethanesealant) is to be the sealer of staple with urethanes and base polyurethane prepolymer for use as.This type of sealer has high tensile strength, excellent elasticity, wear resistance, oil-proofness and winter hardiness.Can be divided into three kinds of baking type, room temperature vulcanized and hot-melting types.Wherein room temperature vulcanized has the branch of single component and two-pack again.Polyurethane sealant is widely used in buildings, square, highway as inlay sealing material, and the sealing of automobile making, glass installation, electronics can, submarine and rocket etc.
Chinese patent 93118939.X discloses a kind of polyurethane sealant compositions, and it comprises that (1) isocyanate functionality is at least 2.0, and molecular weight is at least about 2000 urethane prepolymer; (2) secondary amino group-organoalkoxysilane and per molecule on average contain 1 silane group and at least one isocyanate groups at least, and molecular weight is lower than the reaction product of about 2,000 polymeric polyisocyanate.Before using sealer, when not having other paint base compositions of primary coat on the glass basis surface, sealer of the present invention is particularly useful for adhesive glass and metallic matrix.
Chinese patent 200310112706.9 discloses a kind of preparation method who is mainly used in the silane that contains isocyanate groups of high-grade polyurethane sealant and modified polyurethane resin; Mainly comprise like step: it is raw material that aminosilane and carbonic ether are adopted in (1), and reaction generates the mixture that contains silica-based organic amino carbamate under the basic catalyst effect; (2) use in the neutralization reagent then and above-mentioned reaction mixture; (3) with after the said mixture filtration, obtain containing the clear liquid of silica-based organic amino carbamate; (4) at last above-mentioned clear liquid is carried out the rectification under vacuum cracking, make the silane that contains isocyanate groups.Advantage of the present invention is: operational path is simple, and raw material is cheap and easy to get, and toxicity is low; The small amount of solid salt formation does not have any pollution to environment basically simultaneously.Product contains the purity of silane of isocyanate groups greater than 98%, and yield is more than 90%, and reaction preference is high, reaches more than 97%.
Chinese patent 200510041086.3 discloses a kind of mono component wet solidifying siloxane modified polyurethane sealing gum and preparation method thereof and has belonged to the sealer technical field.Its feed composition and weight percent thereof are: softening agent 15-30, ditan two isocyanide 3-10, polyethers 20-30, quicklime 1-4, water-retaining agent 0.2-0.5, carbon black 10-20, lime carbonate 10-20, silica 1-5, silane resin acceptor kh-550 0.1-0.4, isophorone diisocyanate 0.1-2, silane coupling agent KH-560 0.2-0.6, dibutyl tin laurate 0.01-0.04, α, ω-two (4-hydroxyl butyl) YSR 3286 5-12, two woods Anaesthetie Ether 0.1-0.4.This invention provides a kind of have good snappiness, cohesiveness, wear resistance, thermotolerance, winter hardiness, water tolerance and electrical apparatus insulation property, can satisfy mono component wet solidifying siloxane modified polyurethane sealing gum that multiple base material is carried out good bonding and preparation method thereof.
One Chinese patent application 200710028760.3 discloses a kind of nano organic montmorillonite modified end-silicane-group organosilicon modified polyurethane type seal gum and preparation method thereof.Nano organic montmorillonite modified end-silicane-group organosilicon modified polyurethane type seal gum of the present invention comprises the component of following weight part: 100 parts of modified end-silicane-group organosilicon polyether(poly)urethanes; 5～20 parts of nano organic montmorillonites; 5～150 parts of mineral fillers; 0.2～1.5 part of catalyzer; The present invention is incorporated into the nano organic montmorillonite intercalation technique in the preparation of end-silicane-group polyurethane sealant; Because the strong interfacial interaction between nano organic montmorillonite and the polymeric matrix realizes that simultaneously the end-silicane-group polyurethane sealant strengthens and toughness reinforcing effect; In addition, its tensile strength and elongation at break do not add all improving a lot of polynite.
Existing polyurethane sealant also has some shortcomings.As: single component glue package stability is packed and ectocine is big, it is slower to solidify usually; Contain volatile solvent, solid content is not enough; Many occasions need silane coupling agent.
Summary of the invention
Technical problem to be solved by this invention is the existing normal residual volatile solvent of polyurethane sealant, the problem that solid content is not enough
In order to address the above problem, the invention discloses a kind of polyurethane sealant, it is characterized in that this polyurethane sealant is made up of A component and B component, A component and B ingredients weight parts ratio are 1: 1-10;
Wherein, the A component is a base polyurethane prepolymer for use as;
The B component comprises the following composition of weight part:
Polyether glycol 16-30 part;
Softening agent 2-15 part;
Filler 40-70 part;
Catalyzer 0.1-2 part;
Thixotropic agent 0.1-2 part.
In an embodiment, said base polyurethane prepolymer for use as is end-NCO base polyurethane prepolymer for use as or modified polyurethane prepolymer.
In an embodiment, said end-NCO base polyurethane prepolymer for use as one of can be selected from MDI performed polymer, TDI performed polymer or the HDI performed polymer or their any combination.
In order to obtain good comprehensive performances, in prescription, usually several kinds of performed polymers are mixed and use, as with MDI performed polymer and the mixing of TDI (or HDI) performed polymer etc.; Like 60%MDI performed polymer (MDI and Diethylene Glycol react, and-NCO is 28%, and viscosity is 80MPas) and 40%HDI performed polymer (HDI and 1; 3-butyleneglycol reaction ,-NCO is 19.2%, viscosity is 2800MPas) (NCO is 25% for the POLYMETHYLENE POLYPHENYLISOCYANATE formed; Viscosity 1050MPas), 25 ℃ solidify down, and hardness is 59D; Hardness in the time of 120 ℃ is 40D, has good thermotolerance.
In an embodiment, said modified polyurethane prepolymer is end alkoxysilane group base polyurethane prepolymer for use as or propenoate performed polymer.
In an embodiment, said polyether glycol is selected from polyoxytrimethylene polyvalent alcohol, polymer polyatomic alcohol, THF homopolymer, polyoxyethylene.
In an embodiment, said softening agent is selected from phthalic acid fat, aliphatic diacid fat, phosphoric acid fat, phenylformic acid two alcohol esters.
In an embodiment, said filler is selected from CaCO
3, TiO
2, clay, talcum powder, carbon black, SiO
2, or PVC stick with paste.
In an embodiment, said catalyzer is selected from dibutyl tin laurate, lead octoate 36, stannous octoate, tertiary amines, wherein preferred dibutyl tin laurate or stannous octoate.
In an embodiment, said thixotropic agent is selected from gas-phase silica, THIXCIN, polymeric amide or wilkinite.
The preparation method who the invention discloses above-mentioned polyurethane sealant is following:
The base polyurethane prepolymer for use as of A component is the commercially available prod.
The blending process of B group is generally:
Polyether glycol, filler, softening agent, catalyzer etc. → dispersion → deaeration → packing.
On the one hand, the invention discloses of the application of said polyurethane sealant, can be widely used in buildings, square, highway as inlay sealing material as sealing agent, and the sealing of automobile making, glass installation, electronics can, submarine and rocket etc.
The disclosed polyurethane sealant of the present invention has a bit following:
1) good wear resistance; 2) low-temperature pliability; 3) the performance adjustable extent is wide; 4) physical strength is big; 5) cementability is good; 6) good springiness has good rebound resilience, can be suitable for dynamic seam; 7) good weatherability was 15～20 years work-ing life; 8) oil-proofness is good; 9) anti-biodeterioration; 10) do not contain volatile solvent and other small-molecule substance thereof, solid content 100%.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.The experimental technique of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.Ratio and per-cent are based on weight, unless stated otherwise.
1. 1 kinds of polyurethane sealants of embodiment
The A component is (Kg) as follows: MDI performed polymer 10
The B component formula is (Kg) as follows:
Polyether glycol 23;
Phthalic acid fat 15;
CaCO
3 60；
Dibutyl tin laurate 1;
THIXCIN 1.
With above-mentioned raw materials dispersion, deaeration, get final product.
2. 1 kinds of polyurethane sealants of embodiment
The A component is (Kg) as follows: end alkoxysilane group base polyurethane prepolymer for use as 20;
The B component formula is (Kg) as follows:
THF homopolymer 18
Phenylformic acid two alcohol esters 10
Talcum powder 54
Stannous octoate 0.15
Polymeric amide 0.9
With above-mentioned raw materials dispersion, deaeration, get final product.
3. 1 kinds of polyurethane sealants of embodiment
The A component is (Kg) as follows: the POLYMETHYLENE POLYPHENYLISOCYANATE 60 that 60%MDI performed polymer and 40%HDI performed polymer are formed;
The B component formula is (Kg) as follows:
THF homopolymer 30
Phenylformic acid two alcohol esters 10
Talcum powder 54
Stannous octoate 2
Polymeric amide 0.1
With above-mentioned raw materials dispersion, deaeration, get final product.
Scope of the present invention does not receive the restriction of said specific embodiments, and said embodiment is only desired also to comprise the method and the component of functional equivalent in the scope of the invention as the single example of illustrating all respects of the present invention.In fact, except content as herein described, those skilled in the art can easily grasp multiple improvement of the present invention with reference to the description and the accompanying drawing of preceding text.Said improvement also falls within the scope of appended claims.
Claims (1)
1. a polyurethane sealant is characterized in that, this polyurethane sealant is made up of A component and B component,
Wherein, the A component is following: the POLYMETHYLENE POLYPHENYLISOCYANATE 60kg that 60%MDI performed polymer and 40%HDI performed polymer are formed;
The B component formula is following:
THF homopolymer 30kg;
Glycol benzoate 10kg;
Talcum powder 54kg;
Stannous octoate 2kg;
Polymeric amide 0.1kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810043539XA CN101613587B (en) | 2008-06-24 | 2008-06-24 | Polyurethane sealing glue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810043539XA CN101613587B (en) | 2008-06-24 | 2008-06-24 | Polyurethane sealing glue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101613587A CN101613587A (en) | 2009-12-30 |
| CN101613587B true CN101613587B (en) | 2012-04-18 |
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Family Applications (1)
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|---|---|---|---|
| CN200810043539XA Active CN101613587B (en) | 2008-06-24 | 2008-06-24 | Polyurethane sealing glue |
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Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102295906B (en) * | 2010-06-24 | 2013-09-25 | 上海海鹰粘接科技有限公司 | High-strength yellowing-resistant elastic polyurethane adhesive and preparation method as well as application thereof |
| CN102140317B (en) * | 2010-12-28 | 2012-11-07 | 东莞市普赛达密封粘胶有限公司 | Hydrogenated castor oil intercalated montmorillonite thixotropic agent and preparation method thereof |
| CN102127387B (en) * | 2010-12-28 | 2012-11-07 | 东莞市普赛达密封粘胶有限公司 | Hydrogenated castor oil intercalated montmorillonite modified single-component polyurethane sealant and preparation method thereof |
| CN104893645A (en) * | 2014-03-03 | 2015-09-09 | 广东多正化工科技有限公司 | Polyurethane plastic runway adhesive and preparation method thereof |
| CN104004488B (en) * | 2014-04-14 | 2017-01-04 | 江苏矽时代材料科技有限公司 | A kind of environment-friendly type end-silicane-group polymerization of acrylic modified polyurethane electronic seal glue |
| CN104449534B (en) * | 2014-11-21 | 2016-08-24 | 济南汉斯曼时代技术有限公司 | One exempts from primary coat polyurethane glass glue and preparation method thereof |
| CN104845578B (en) * | 2015-05-11 | 2018-12-21 | 饶玉明 | A kind of vehicle glass glass cement |
| CN104845579B (en) * | 2015-05-11 | 2018-12-21 | 饶玉明 | A kind of preparation method of vehicle glass glass cement |
| CN105199653B (en) * | 2015-10-26 | 2018-07-06 | 江苏钟山化工有限公司 | A kind of high intensity low viscosity silicane-modified polyurethane resin |
| AU2016376643B2 (en) * | 2015-12-21 | 2021-07-01 | Sika Technology Ag | Sealant for floor joints with a high resistance to fuels |
| CN105949813A (en) * | 2016-07-14 | 2016-09-21 | 安庆师范大学 | Caulking waterproof sealing material for building |
| CN107573674A (en) * | 2017-09-06 | 2018-01-12 | 苏州纽东精密制造科技有限公司 | A kind of preparation method of encapsulant |
| CN108485587B (en) * | 2018-03-28 | 2021-01-15 | 江苏锦厚新材料科技有限公司 | Polyurethane type oil-resistant sealant and preparation method and application thereof |
| CN109575871A (en) * | 2018-12-04 | 2019-04-05 | 万华化学集团股份有限公司 | A kind of ultraviolet radioactive and the adhesive composition of moisture dual cure and application thereof |
| CN111892902B (en) * | 2019-05-05 | 2022-10-25 | 郑州大学 | Novel double-component modified polyurethane sealant for hollow glass and preparation method thereof |
| CN110746925B (en) * | 2019-06-24 | 2021-12-14 | 南京威邦新材料有限公司 | Double-component fast-curing polyurethane adhesive for air filter and preparation method thereof |
| CN112210336A (en) * | 2020-09-04 | 2021-01-12 | 上海吒吒新材料科技有限公司 | Low-temperature-resistant polyurethane adhesive and preparation method thereof |
| CN114380968B (en) * | 2022-01-04 | 2023-05-26 | 南通纳科达聚氨酯科技有限公司 | TPU (thermoplastic polyurethane) car cover film special material and preparation and application thereof |
| CN115322724B (en) * | 2022-08-01 | 2023-06-30 | 山东北方现代化学工业有限公司 | Environment-friendly high-low temperature impact resistant weather resistant bi-component polyurethane potting sealant and preparation method thereof |
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| CN101613587A (en) | 2009-12-30 |
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Address after: Shuangdian town of Rudong County in Jiangsu province 226400 Nantong double South neighborhood Patentee after: Nantong rock art wall Mstar Technology Ltd Address before: Shuangdian town of Rudong County in Jiangsu province 226400 Nantong double South neighborhood Patentee before: Nantong YanYi Coating Technology Co., Ltd. |
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