CN103509515A - Polyurethane adhesive and preparation method thereof - Google Patents
Polyurethane adhesive and preparation method thereof Download PDFInfo
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- CN103509515A CN103509515A CN201210216881.1A CN201210216881A CN103509515A CN 103509515 A CN103509515 A CN 103509515A CN 201210216881 A CN201210216881 A CN 201210216881A CN 103509515 A CN103509515 A CN 103509515A
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- polyurethane adhesive
- diphenylmethanediisocyanate
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Abstract
The invention relates to the technical field of materials and particularly relates to a trial period controllable solvent-free type double-component polyurethane adhesive and a preparation method thereof. The polyurethane adhesive provided by the invention comprises an A component and a B component, wherein the A component comprises a component providing active hydrogen and a filler, the B component comprises 4, 4'-diphenylmethane diisocyanate, and the molar ratio of isocyanate radicals in the B component to the active hydrogen in the A component is (1.8-2.8): 1. Compared with the prior art, the trial period of the polyurethane adhesive provided by the invention is controllable. According to a preparation method of the polyurethane adhesive, the requirements of the trial periods with different durations can be met by selecting different raw materials and designing different formulas and the working efficiency can be further improved.
Description
Technical field
The present invention relates to material technology field, particularly controlled no-solvent type dual-component polyurethane adhesive of a kind of driving cycle and preparation method thereof.
Background technology
Dual-component polyurethane adhesive comprises A component and B component, A component mainly comprises polyvalent alcohol, filler and catalyzer, sometimes also may have chainextender component, B component mainly comprises polyisocyanates, during use, A, B component are mixed according to certain proportioning, be then coated in adherend surface and just can carry out bonding operation, apply afterwards certain pressure and just can form the joint that bonding strength is higher, meet bonding requirements.Therefore, dual-component polyurethane adhesive is a kind of conventional tackiness agent, possesses that low price, performance are controlled, easy transportation and storage and simple operation and other advantages, thereby is widely used in the industries such as building, building materials, packing, shoemaking.Yet, along with the variation in season, when using the summer of high temperature, the driving cycle of polyurethane adhesive shortens greatly, reduced deployed tackiness agent shelf-time and coating time, make needs repeatedly to allocate polyurethane adhesive when scale operation in batches, thereby has affected working efficiency; And use when lower winter of temperature, the driving cycle of polyurethane adhesive extends greatly, has increased the set time of tackiness agent, has equally also affected working efficiency.
Summary of the invention
The object of the invention is to provide a kind of polyurethane adhesive, uncontrollable to solve driving cycle of dual-component polyurethane adhesive of the prior art, thereby causes ineffective technical matters.
Another object of the present invention is to provide a kind of preparation method of polyurethane adhesive.
The object of the invention is achieved through the following technical solutions:
A kind of polyurethane adhesive, comprise A component and B component, described A component comprises provides the component of active hydrogen and filler, and described B component is 4,4'-diphenylmethanediisocyanate, the ratio of the molar weight of the active hydrogen in the isocyano in described B component and described A component is 1.8 ~ 2.8:1.
Preferably, described in, provide the component of active hydrogen to be selected from one or both in polyvalent alcohol or Viscotrol C.
Preferably, described polyvalent alcohol is selected from polypropylene glycol, and the molecular weight of described polypropylene glycol is selected from one or more in 1000,2000 or 4000.
Preferably, described Viscotrol C is selected from the technical grade Viscotrol C of hydroxyl value between 150 ~ 160.
Preferably, described filler is selected from order number at 500 ~ 3000 object heavy or ground calcium carbonates, and the quality of described filler is for providing 1.2 ~ 2.0 times of quality of the component of active hydrogen.
Preferably, described A component also comprises catalyzer, described catalyzer is selected from amines catalyst or organotin catalysts, described amines catalyst is triethylenediamine, described organotin catalysts is selected from one or both in stannous octoate or dibutyl tin laurate, and the quality of described catalyzer is 0.01% ~ 0.02% of described A component quality.
Preferably, described 4,4'-diphenylmethanediisocyanate is liquefaction 4,4'-diphenylmethanediisocyanate, be selected from thick 4, one or more in 4'-diphenylmethanediisocyanate, low molecular weight polycaprolactone ester or modified by polyether glycol liquefaction 4,4'-diphenylmethanediisocyanate or Carbodiimide-Modified liquefied mdi.
Preferably, its driving cycle can be controlled at following scope: under the condition of 35 ~ 40 ℃, the driving cycle is 15 minutes to 20 hours; Under 0 ~ 5 ℃ of condition, the driving cycle is 30 minutes to 48 hours.
A preparation method for polyurethane adhesive, the method comprises the following steps:
1), by providing component and the filler of active hydrogen to join in container, stir it fully mixed, obtain A component;
2), by B component 4,4'-diphenylmethanediisocyanate join in A component, stir it fully mixed, obtain polyurethane adhesive;
Wherein, the ratio of the molar weight of the active hydrogen in the isocyano in described B component and described A component is 1.8 ~ 2.8:1.
Preferably, described in, provide the component of active hydrogen to be selected from one or both in polyvalent alcohol or Viscotrol C.
Preferably, described polyvalent alcohol is selected from polypropylene glycol, and the molecular weight of described polypropylene glycol is selected from one or more in 1000,2000 or 4000.
Preferably, described Viscotrol C is selected from the technical grade Viscotrol C of hydroxyl value between 150 ~ 160.
Preferably, described filler is selected from order number at 500 ~ 3000 object heavy or ground calcium carbonates, and the quality of described filler is for providing 1.2 ~ 2.0 times of quality of the component of active hydrogen.
Preferably, described step 1) also comprises catalyzer is joined in container, described catalyzer and component and the described A component of the common composition of filler that active hydrogen is provided, described catalyzer is selected from amines catalyst or organotin catalysts, described amines catalyst is triethylenediamine, described organotin catalysts is selected from one or both in stannous octoate or dibutyl tin laurate, and the quality of described catalyzer is 0.01% ~ 0.02% of A component quality.
Preferably, described 4,4'-diphenylmethanediisocyanate is liquefaction 4,4'-diphenylmethanediisocyanate, be selected from thick 4, one or more in 4'-diphenylmethanediisocyanate, low molecular weight polycaprolactone ester or modified by polyether glycol liquefaction 4,4'-diphenylmethanediisocyanate or Carbodiimide-Modified liquefied mdi.
Preferably, the driving cycle of the polyurethane adhesive of making can be controlled at following scope: under the condition of 35 ~ 40 ℃, the driving cycle is 15 minutes to 20 hours; Under 0 ~ 5 ℃ of condition, the driving cycle is 30 minutes to 48 hours.
Compared with prior art, the driving cycle of polyurethane adhesive of the present invention is controlled, the preparation method of polyurethane adhesive of the present invention can be by selecting different raw materials, designing different formulas, thereby meet the requirement of different lengths driving cycle, and then increase work efficiency.
Embodiment
Below in conjunction with specific embodiment, Method and process involved in the present invention is described, the following example only, for operating process of the present invention and formula are described, does not limit protection scope of the present invention.
Brief description is the controlled principle of driving cycle of polyurethane adhesive of the present invention once: after dual-component polyurethane adhesive A component and B component are mixed in proportion, stepwise polymerization reaction can occur the isocyano of the active hydrogen in A component and B component.Along with the carrying out of reaction, the viscosity of tackiness agent constantly increases, and when viscosity increases to a certain degree, stirs and becomes very difficult.This can regard the driving cycle of polyurethane adhesive as during this period of time to stirring difficulty after mixing.The present invention controls the activity of active hydrogen and the reactive behavior that concentration affects polyaddition reaction by the mode of allotment A component material composition and ratio and interpolation catalyzer, thereby the speed that control viscosity increases is controlled the driving cycle of polyurethane adhesive.
Embodiment 1
By 100 grams of PPG1000, be that 500 object water-ground limestones mix with 200 grams of order numbers, after fully stirring, obtain the A component with certain viscosity without obvious granular sensation, then add 45 grams of thick MDI, after fully stirring, make light yellow adhesive for polyurethane, this tackiness agent driving cycle length approximately 4 hours under the condition of 35 ~ 40 ℃, approximately 12 hours lower driving cycles of condition of 0 ~ 5 ℃.
Embodiment 2
By 200 grams of PPG2000, be that 800 object light calcium carbonates mix with 300 grams of order numbers, after fully stirring, obtain the A component with certain viscosity without obvious granular sensation, then add 47.5 grams of Carbodiimide-Modified liquefied mdis, after fully stirring, make rice white adhesive for polyurethane, this tackiness agent driving cycle length approximately 8 hours under the condition of 35 ~ 40 ℃, the length of lower driving cycle of condition of 0 ~ 5 ℃ approximately 24 hours.
Embodiment 3
By 200 grams of PPG4000, be that 1250 object light calcium carbonates mix with 300 grams of order numbers, after fully stirring, obtain the A component with certain viscosity without obvious granular sensation, then add 26.5 grams of Carbodiimide-Modified liquefied mdis, after fully stirring, make rice white adhesive for polyurethane, this tackiness agent driving cycle length approximately 20 hours under the condition of 35 ~ 40 ℃, the length of lower driving cycle of condition of 0 ~ 5 ℃ approximately 48 hours.
Embodiment 4
Technical grade Viscotrol C by 200 grams of PPG2000,50 grams of hydroxyl values between 150 ~ 160 and 400 grams of order numbers are that 1250 object light calcium carbonates mix, after fully stirring, obtain the A component with certain viscosity without obvious granular sensation, then add 137.5 grams of thick MDI, after fully stirring, make light yellow adhesive for polyurethane, this tackiness agent driving cycle length approximately 2 hours under the condition of 35 ~ 40 ℃, the length of lower driving cycle of condition of 0 ~ 5 ℃ approximately 6 hours.
Embodiment 5
By 200 grams of PPG2000,100 grams of technical grade Viscotrol C and 500 grams of order numbers, be that 3000 object light calcium carbonates mix, after fully stirring, obtain the A component with certain viscosity without obvious granular sensation, then add 200 grams of thick MDI, after fully stirring, make rice white adhesive for polyurethane, this tackiness agent driving cycle length approximately 1.5 hours under the condition of 35 ~ 40 ℃, the length of lower driving cycle of condition of 0 ~ 5 ℃ approximately 4 hours.
Embodiment 6
Technical grade Viscotrol C by 100 grams of hydroxyl values between 150 ~ 160 and 200 grams of order numbers are that 1250 object light calcium carbonates mix, after fully stirring, obtain the A component with certain viscosity without obvious granular sensation, then add 145 grams of polyether-modified liquefied mdis, after fully stirring, make light yellow adhesive for polyurethane, this tackiness agent driving cycle length approximately 45 minutes under the condition of 35 ~ 40 ℃, the length of lower driving cycle of condition of 0 ~ 5 ℃ approximately 2 hours.
Embodiment 7
Technical grade Viscotrol C by 100 grams of hydroxyl values between 150 ~ 160,0.06 gram of dibutyl tin laurate and 120 grams of order numbers are that 1250 object light calcium carbonates mix, after fully stirring, obtain the A component with certain viscosity without obvious granular sensation, then add 181.25 grams of polyether-modified liquefied mdis, after fully stirring, make light yellow adhesive for polyurethane, this tackiness agent driving cycle length approximately 15 minutes under the condition of 35 ~ 40 ℃, the length of lower driving cycle of condition of 0 ~ 5 ℃ approximately 1 hour.
Embodiment 8
Technical grade Viscotrol C by 100 grams of hydroxyl values between 150 ~ 160,0.03 gram of stannous octoate and 200 grams of order numbers are that 1250 object light calcium carbonates mix, after fully stirring, obtain the A component with certain viscosity without obvious granular sensation, then add 203 grams of polyether-modified liquefied mdis, after fully stirring, make light yellow adhesive for polyurethane, this tackiness agent driving cycle length approximately 15 minutes under the condition of 35 ~ 40 ℃, the length of lower driving cycle of condition of 0 ~ 5 ℃ approximately 30 minutes.
The driving cycle of polyurethane adhesive of the present invention is controlled, and the preparation method of described polyurethane adhesive can be by selecting different raw materials, designing different formulas, thereby meet the requirement of different lengths driving cycle, and then increase work efficiency.
Disclosed is above only several specific embodiments of the application, but the application is not limited thereto, and the changes that any person skilled in the art can think of, all should drop in the application's protection domain.
Claims (16)
1. a polyurethane adhesive, it is characterized in that, comprise A component and B component, described A component comprises provides the component of active hydrogen and filler, described B component is 4,4'-diphenylmethanediisocyanate, the ratio of the molar weight of the active hydrogen in the isocyano in described B component and described A component is 1.8 ~ 2.8:1.
2. a kind of polyurethane adhesive as claimed in claim 1, is characterized in that, described in provide the component of active hydrogen to be selected from one or both in polyvalent alcohol or Viscotrol C.
3. a kind of polyurethane adhesive as claimed in claim 2, is characterized in that, described polyvalent alcohol is selected from polypropylene glycol, and the molecular weight of described polypropylene glycol is selected from one or more in 1000,2000 or 4000.
4. a kind of polyurethane adhesive as claimed in claim 2, is characterized in that, described Viscotrol C is selected from the technical grade Viscotrol C of hydroxyl value between 150 ~ 160.
5. a kind of polyurethane adhesive as claimed in claim 1, is characterized in that, described filler is selected from order number at 500 ~ 3000 object heavy or ground calcium carbonates, and the quality of described filler is for providing 1.2 ~ 2.0 times of quality of the component of active hydrogen.
6. a kind of polyurethane adhesive as claimed in claim 1, it is characterized in that, described A component also comprises catalyzer, described catalyzer is selected from amines catalyst or organotin catalysts, described amines catalyst is triethylenediamine, described organotin catalysts is selected from one or both in stannous octoate or dibutyl tin laurate, and the quality of described catalyzer is 0.01% ~ 0.02% of described A component quality.
7. a kind of polyurethane adhesive as claimed in claim 1, it is characterized in that, described 4,4'-diphenylmethanediisocyanate is liquefaction 4,4'-diphenylmethanediisocyanate, be selected from thick 4, one or more in 4'-diphenylmethanediisocyanate, low molecular weight polycaprolactone ester or modified by polyether glycol liquefaction 4,4'-diphenylmethanediisocyanate or Carbodiimide-Modified liquefied mdi.
8. a kind of polyurethane adhesive as claimed in claim 1, is characterized in that, its driving cycle can be controlled at following scope: under the condition of 35 ~ 40 ℃, the driving cycle is 15 minutes to 20 hours; Under 0 ~ 5 ℃ of condition, the driving cycle is 30 minutes to 48 hours.
9. a preparation method for polyurethane adhesive, is characterized in that, the method comprises the following steps:
1), by providing component and the filler of active hydrogen to join in container, stir it fully mixed, obtain A component;
2), by B component 4,4'-diphenylmethanediisocyanate join in A component, stir it fully mixed, obtain polyurethane adhesive;
Wherein, the ratio of the molar weight of the active hydrogen in the isocyano in described B component and described A component is 1.8 ~ 2.8:1.
10. the preparation method of a kind of polyurethane adhesive as claimed in claim 9, is characterized in that, described in provide the component of active hydrogen to be selected from one or both in polyvalent alcohol or Viscotrol C.
The preparation method of 11. a kind of polyurethane adhesives as claimed in claim 10, is characterized in that, described polyvalent alcohol is selected from polypropylene glycol, and the molecular weight of described polypropylene glycol is selected from one or more in 1000,2000 or 4000.
The preparation method of 12. a kind of polyurethane adhesives as claimed in claim 10, is characterized in that, described Viscotrol C is selected from the technical grade Viscotrol C of hydroxyl value between 150 ~ 160.
The preparation method of 13. a kind of polyurethane adhesives as claimed in claim 9, is characterized in that, described filler is selected from order number at 500 ~ 3000 object heavy or ground calcium carbonates, and the quality of described filler is for providing 1.2 ~ 2.0 times of quality of the component of active hydrogen.
The preparation method of 14. a kind of polyurethane adhesives as claimed in claim 9, it is characterized in that, described step 1) also comprises catalyzer is joined in container, described catalyzer and component and the described A component of the common composition of filler that active hydrogen is provided, described catalyzer is selected from amines catalyst or organotin catalysts, described amines catalyst is triethylenediamine, described organotin catalysts is selected from one or both in stannous octoate or dibutyl tin laurate, and the quality of described catalyzer is 0.01% ~ 0.02% of A component quality.
The preparation method of 15. a kind of polyurethane adhesives as claimed in claim 9, it is characterized in that, described 4,4'-diphenylmethanediisocyanate is liquefaction 4,4'-diphenylmethanediisocyanate, be selected from thick 4, one or more in 4'-diphenylmethanediisocyanate, low molecular weight polycaprolactone ester or modified by polyether glycol liquefaction 4,4'-diphenylmethanediisocyanate or Carbodiimide-Modified liquefied mdi.
The preparation method of 16. a kind of polyurethane adhesives as claimed in claim 9, is characterized in that, the driving cycle of the polyurethane adhesive of making can be controlled at following scope: under the condition of 35 ~ 40 ℃, the driving cycle is 15 minutes to 20 hours; Under 0 ~ 5 ℃ of condition, the driving cycle is 30 minutes to 48 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210216881.1A CN103509515A (en) | 2012-06-27 | 2012-06-27 | Polyurethane adhesive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210216881.1A CN103509515A (en) | 2012-06-27 | 2012-06-27 | Polyurethane adhesive and preparation method thereof |
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| CN103509515A true CN103509515A (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210216881.1A Pending CN103509515A (en) | 2012-06-27 | 2012-06-27 | Polyurethane adhesive and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108659777A (en) * | 2018-05-23 | 2018-10-16 | 安徽省高雅家居有限公司 | A kind of sawdust adhesive |
| CN109181620A (en) * | 2018-08-22 | 2019-01-11 | 黎明化工研究设计院有限责任公司 | One kind can be bonded time long room temperature curing weatherable polyurethane adhesive |
| CN115044341A (en) * | 2022-08-15 | 2022-09-13 | 山东科力美实业有限公司 | Bi-component polyurethane adhesive for forming popcorn particles and preparation method thereof |
-
2012
- 2012-06-27 CN CN201210216881.1A patent/CN103509515A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108659777A (en) * | 2018-05-23 | 2018-10-16 | 安徽省高雅家居有限公司 | A kind of sawdust adhesive |
| CN109181620A (en) * | 2018-08-22 | 2019-01-11 | 黎明化工研究设计院有限责任公司 | One kind can be bonded time long room temperature curing weatherable polyurethane adhesive |
| CN109181620B (en) * | 2018-08-22 | 2021-07-02 | 黎明化工研究设计院有限责任公司 | Room-temperature curing weather-resistant polyurethane adhesive with long bonding time |
| CN115044341A (en) * | 2022-08-15 | 2022-09-13 | 山东科力美实业有限公司 | Bi-component polyurethane adhesive for forming popcorn particles and preparation method thereof |
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Application publication date: 20140115 |