CN101676356A - Monocomponent polyurethane foaming type adhesive - Google Patents
Monocomponent polyurethane foaming type adhesive Download PDFInfo
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- CN101676356A CN101676356A CN200810200075A CN200810200075A CN101676356A CN 101676356 A CN101676356 A CN 101676356A CN 200810200075 A CN200810200075 A CN 200810200075A CN 200810200075 A CN200810200075 A CN 200810200075A CN 101676356 A CN101676356 A CN 101676356A
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- polyurethane foaming
- type adhesive
- foaming type
- monocomponent polyurethane
- mdi
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- Adhesives Or Adhesive Processes (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention provides a monocomponent polyurethane foaming type adhesive, which is prepared by adding, according to the finished product containing 5 to 20% of isocyanate group, polymerized MDI, MDI0129M, polyether polyalcohol, plasticizer, color paste and dimorpholinyl diethylether into a reaction kettle, heating and reacting at the temperature of 60 to 90 DEG C for 60 to 150 minutes. The adhesive has no organic solvent, after being solidified, the adhesive is formed into a micro foam layer with good mechanical strength.
Description
Technical field
The present invention relates to a kind of monocomponent polyurethane foaming type adhesive.
Technical background
The requirement that production efficiency is improved along with society, and people are to the light-weighted pursuit of material, the method for bond materials such as nail that tradition wastes time and energy or anchoring is replaced by the bonding method of tackiness agent more and more.Polyurethane tackifier owing to have active isocyanate groups on the molecular chain, has good bonding force to conventional materials such as timber, cement and metals, has obtained to use widely and significant progress at building material industry.Polyurethane adhesive generally is divided into two-pack and monocomponent adhesive, and monocomponent polyurethane adhesive comparison bi-component polyurethane adhesive has significantly advantage easy to use.Monocomponent polyurethane adhesive traditionally generally uses TDI (tolylene diisocyanate), and higher vapour pressure and the toxicity of TDI has limited its application.The tradition monocomponent polyurethane adhesive generally all needs to add organic solvent, and well-known, these solvents are pollutents of environment.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, propose a kind of not solvent-laden monocomponent polyurethane foaming type adhesive.The technical scheme that the present invention takes is: the isocyanic ester in the adhesive components all uses MDI (diphenylmethanediisocyanate), wherein MDI at least 50% is an isomer 2,4MDI content is about 50% MDI, as the Desmodur 0129M of German Bayer company.
Technological process of the present invention is such: add polyvalent alcohol, auxiliary agent and MDI isocyanic ester in reactor, chemical reaction is carried out in intensification, temperature of reaction is between 60 ℃～90 ℃, and the reaction times obtained monocomponent polyurethane foaming type adhesive between 60 minutes～150 minutes.The curing of monocomponent polyurethane foaming type adhesive is undertaken by the chemical reaction of isocyanic ester and water, and water can be airborne moisture, also can be the water that material surface adsorbs.The chemical reaction of isocyanic ester and water produces carbonic acid gas, and carbonic acid gas forms micropore in tackiness agent, thereby forms the bonding interface of little foaming.
In the present invention, Desmodur 0129M or other isomer 2,4MDI content are about 50% MDI, and its consumption is at least 50% of the total consumption of MDI.Other spendable MDI comprises: polymeric MDI, and liquefaction modification MDI, mixed and modified MDI, the consumption of this type of MDI is less than 50% of the total consumption of MDI.
In the present invention, the polyvalent alcohol of use comprises: molecular weight is between 100～6000 polyether Glycols or trivalent alcohol, and molecular weight is between 500～3000 polyester diol or trivalent alcohol, natural polyvalent alcohol such as castor-oil plant wet goods.Polyvalent alcohol can use separately, also can be the mixture of different polyvalent alcohols.
In the present invention, the isocyanate group mass contg of the finished product is between 5%～20%.
In the present invention, used auxiliary agent comprises: softening agent, and as DOP, clorafin etc.; Tinting material is as phthalocyanine blue etc.; Catalyzer is as N,N-Dibenzylamine etc.; Anti-aging agent such as BHT etc.Total consumption of this analog assistant is less than 50% of tackiness agent total amount.
In the present invention, the density after monocomponent polyurethane foaming type adhesive solidifies is between 100～800kg/m
3
Embodiment
Embodiment 1
In a glass reaction flask of having equipped stirring, thermopair, add Desmodur0129M (German Bayer company) 500 grams, polyether glycol GMN-3050 (Shanghai Gaoqiao petrochemical industry) 100 grams, polyether glycol GE-204 (Shanghai Gaoqiao petrochemical industry) 80 grams, N,N-Dibenzylamine 5.0 grams, phthalocyanine blue mill base 6.0 grams.Chemical reaction is carried out in intensification, and 60 ℃ of temperature of reaction in 150 minutes reaction times, obtain monocomponent polyurethane foaming type adhesive.After testing, isocyanate group mass contg 20.0%, viscosity is 600mPa.s/25 ℃.Tackiness agent surface drying time 30 minutes, the density after the curing are 100kg/m
3Steel plate galvanized-cementitious intensity is greater than 5Mpa.
Embodiment 2
In a glass reaction flask of having equipped stirring, thermopair, add Desmodur0129M (German Bayer company) 250 grams, polymeric MDI 44V20 (German Bayer company) 250 grams, polyether glycol GE-220 (Shanghai Gaoqiao petrochemical industry) 900 grams, polyether glycol GE-204 (Shanghai Gaoqiao petrochemical industry) 50 grams, N,N-Dibenzylamine 0.2 gram, clorafin 52#600 gram, antideteriorant BHT 10 grams.Chemical reaction is carried out in intensification, and 90 ℃ of temperature of reaction in 60 minutes reaction times, obtain monocomponent polyurethane foaming type adhesive.After testing, isocyanate group mass contg 5%, viscosity is 8000mPa.s/25 ℃.Tackiness agent surface drying time 20 minutes, the density behind the adhesive solidification are 800kg/m
3The plank bonding strength is greater than 6Mpa.
Claims (4)
1. a monocomponent polyurethane foaming type adhesive is characterized in that: all use the MDI kind isocyanate, do not contain organic solvent.
2. according to the described monocomponent polyurethane foaming type adhesive of claim 1, it is characterized in that: isomer 2,4MDI content are MDI content at least 50% in the MDI kind isocyanate of about 50%.
3. according to the described monocomponent polyurethane foaming type adhesive of claim 1, it is characterized in that: the isocyanate group mass contg of adhesive products is between 5%～20%.
4. according to the described monocomponent polyurethane foaming type adhesive of claim 1, it is characterized in that: between 5%～20%, throw in raw material to reactor: polymeric MDI according to the isocyanate group mass contg of the finished product, MDI 0129M, polyether glycol, softening agent, mill base, N,N-Dibenzylamine.Chemical reaction is carried out in intensification, and temperature of reaction is controlled between 60 ℃～90 ℃, and the reaction times is controlled between 60 minutes～150 minutes, obtains monocomponent polyurethane foaming type adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810200075A CN101676356A (en) | 2008-09-18 | 2008-09-18 | Monocomponent polyurethane foaming type adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810200075A CN101676356A (en) | 2008-09-18 | 2008-09-18 | Monocomponent polyurethane foaming type adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101676356A true CN101676356A (en) | 2010-03-24 |
Family
ID=42029072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810200075A Pending CN101676356A (en) | 2008-09-18 | 2008-09-18 | Monocomponent polyurethane foaming type adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101676356A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382276A (en) * | 2011-08-16 | 2012-03-21 | 江阴市文明体育塑胶有限公司 | Plastic floor mat surface spray glue |
| CN104530379A (en) * | 2014-12-19 | 2015-04-22 | 淄博正大节能新材料有限公司 | Single-component polyurethane material for preparing waterproof glue and preparation method thereof |
| CN110183606A (en) * | 2019-05-31 | 2019-08-30 | 李学友 | A kind of mono-component polyurethane micro-foaming material and method with strong adhesive property |
| CN114045147A (en) * | 2021-11-30 | 2022-02-15 | 广东省科学院生物与医学工程研究所 | Single-component polyurethane foaming adhesive and preparation method and application thereof |
-
2008
- 2008-09-18 CN CN200810200075A patent/CN101676356A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382276A (en) * | 2011-08-16 | 2012-03-21 | 江阴市文明体育塑胶有限公司 | Plastic floor mat surface spray glue |
| CN104530379A (en) * | 2014-12-19 | 2015-04-22 | 淄博正大节能新材料有限公司 | Single-component polyurethane material for preparing waterproof glue and preparation method thereof |
| CN104530379B (en) * | 2014-12-19 | 2017-09-29 | 淄博正大聚氨酯有限公司 | Make marine glue mono-component polyurethane material and preparation method thereof |
| CN110183606A (en) * | 2019-05-31 | 2019-08-30 | 李学友 | A kind of mono-component polyurethane micro-foaming material and method with strong adhesive property |
| CN114045147A (en) * | 2021-11-30 | 2022-02-15 | 广东省科学院生物与医学工程研究所 | Single-component polyurethane foaming adhesive and preparation method and application thereof |
| CN114045147B (en) * | 2021-11-30 | 2023-12-01 | 广东省科学院生物与医学工程研究所 | Single-component polyurethane foaming adhesive and preparation method and application thereof |
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Application publication date: 20100324 |