CN105038683A - Preparation method for nano-modified polyurethane adhesive - Google Patents
Preparation method for nano-modified polyurethane adhesive Download PDFInfo
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- CN105038683A CN105038683A CN201510456491.5A CN201510456491A CN105038683A CN 105038683 A CN105038683 A CN 105038683A CN 201510456491 A CN201510456491 A CN 201510456491A CN 105038683 A CN105038683 A CN 105038683A
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- modified polyurethane
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- tackiness agent
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Abstract
The invention discloses a preparation method for a nano-modified polyurethane adhesive. The preparation method comprises the following steps: a, heating polyester polyol for 1-2.5 h at the vacuum environment so as to obtain polyether polyol; b, adding obtained polyether polyol into diphenyl-methane-diisocyanate at room temperature for reaction; c, adding poly-1,4-butylene adipate glycol so as to obtain a prepolymer; d, adding nano-silica into the obtained prepolymer and simultaneously stirring the prepolymer by adopting ultrasonic waves and a stirrer so as to obtain a nano-modified polyurethane; e, enabling the obtained nano-modified polyurethane to react with polyphenol glycidol epoxy resin for 1-2 h, so as to obtain the nano-modified polyurethane adhesive. The preparation method provided by the invention is reasonable and simple, the obtained nano-modified polyurethane adhesive has excellent adhesivity, meanwhile, is good in flexibility, high in mechanical property, stamping-resistant, and good in high temperature resistance and low temperature resistance, does not volatilize hazardous substances which are harmful to human bodies and environment and can be widely applied to the industrial field.
Description
Technical field
The present invention relates to adhesive area, be specifically related to a kind of preparation method of nano modified polyurethane tackiness agent.
Background technology
Urethane is the abbreviation of carbamate, has group-NHCOOR.Polyurethane adhesive is an important component part at present just in the urethane resin of fast development, and have excellent performance, being obtained in many aspects and applying widely, is one of important kind in eight large synthetic adhesives.It is applicable to various structural bonding field, and possesses excellent flexible nature.
Adhesive for polyurethane has the performance of many uniquenesses, and its snappiness is good, low temperature resistant, shock resistance.But thermotolerance is still not ideal enough.Organic silicon modified polyurethane, can improve the thermotolerance of adhesive for polyurethane.If carry out modified organic silicon urethane with resin again, not only can improve the water tolerance of urethane, but also the rigidity of urethane can be improved, make polyurethane products not only have higher cohesive strength cohesive strength but also have higher thermotolerance, and do not lose its snappiness.
Meanwhile, nano material and nano composite material are a kind of novel high-performance materials developed rapidly in recent years.Due to its tempting feature in structure, photoelectricity and chemical property etc., cause the great interest of material science and technology man.Along with development and the maturation of nano material preparation technology, people can prepare various types of nano materials of different-grain diameter, different components, different structure easily, and solid basis has been established in the development and application for nano material.
Summary of the invention
The object of this invention is to provide the preparation method of the nano modified polyurethane tackiness agent that a kind of adhesive property is excellent, snappiness is strong.
The present invention is achieved through the following technical solutions:
A preparation method for nano modified polyurethane tackiness agent, comprises the following steps:
A, polyester polyol is heated 1 ~ 2.5h under vacuum conditions, obtain polyether glycol, described vacuum degree control is at-0.05 ~-0.15MPa, and temperature controls at 95 ~ 130 DEG C;
B, gained polyether glycol is added diphenylmethanediisocyanate at normal temperatures, then temperature rises to 60 ~ 100 DEG C, reaction 1.5 ~ 3h;
C, then add poly-oxalic acid-BDO esterdiol, temperature controls at 40 ~ 80 DEG C, reaction 2 ~ 5h, obtained performed polymer;
D, add nano silicon by the performed polymer of gained, adopt ultrasonic wave and agitator to stir performed polymer, make nano silicon be evenly distributed on performed polymer, churning time is 30 ~ 60min, obtains nano modified polyurethane simultaneously;
E, gained nano modified polyurethane and polyphenol type glycidyl epoxide resin are reacted 1 ~ 2h, temperature controls, at 60 ~ 80 DEG C, can obtain nano modified polyurethane tackiness agent.
Further, in described step a, polyester polyol is polyester diol.
Further, in described step b, the mass ratio of polyether glycol and diphenylmethanediisocyanate is 2.5 ~ 3:1.
Further, in described step c, mass percent shared by poly-oxalic acid-BDO esterdiol is 10% ~ 18% of the rear gained solution of reaction in step b.
Further, in described steps d, mass percent shared by nano silicon is 1% ~ 3% of performed polymer.
Further, in described step e, mass percent shared by polyphenol type glycidyl epoxide resin of receiving is 2% ~ 5% of nano modified polyurethane.
Further, in described step e, thickening material, linking agent, oxidation inhibitor and stablizer can be added.
The invention has the beneficial effects as follows: this preparation method is reasonable, simply, gained nano modified polyurethane tackiness agent has excellent glueability, snappiness is good simultaneously, and mechanical property is strong, anti-impact pressure, high-and low-temperature resistance is good by force, and can not volatilize nuisance quality human body and environment work the mischief, and can be widely used in industrial circle.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
A preparation method for nano modified polyurethane tackiness agent, comprises the following steps:
A, polyester diol is heated 1h under vacuum conditions, obtain polyether Glycols, described vacuum degree control is at-0.05MPa, and temperature controls at 95 DEG C;
B, gained polyether Glycols is added diphenylmethanediisocyanate at normal temperatures, then temperature rises to 60 DEG C, reaction 1.5h;
C, then add poly-oxalic acid-BDO esterdiol, temperature controls at 40 DEG C, reaction 2h, obtained performed polymer;
D, add nano silicon by the performed polymer of gained, adopt ultrasonic wave and agitator to stir performed polymer, make nano silicon be evenly distributed on performed polymer, churning time is 30min, obtains nano modified polyurethane simultaneously;
E, gained nano modified polyurethane and polyphenol type glycidyl epoxide resin are reacted 1h, temperature controls, at 60 DEG C, can obtain nano modified polyurethane tackiness agent.
Embodiment 2
A preparation method for nano modified polyurethane tackiness agent, comprises the following steps:
A, polyester diol is heated 1.5h under vacuum conditions, obtain polyether Glycols, described vacuum degree control is at-0.1MPa, and temperature controls at 100 DEG C;
B, gained polyether Glycols is added diphenylmethanediisocyanate at normal temperatures, then temperature rises to 80 DEG C, reaction 2h;
C, then add poly-oxalic acid-BDO esterdiol, temperature controls at 60 DEG C, reaction 3h, obtained performed polymer;
D, add nano silicon by the performed polymer of gained, adopt ultrasonic wave and agitator to stir performed polymer, make nano silicon be evenly distributed on performed polymer, churning time is 40min, obtains nano modified polyurethane simultaneously;
E, gained nano modified polyurethane and polyphenol type glycidyl epoxide resin are reacted 1.5h, temperature controls, at 70 DEG C, can obtain nano modified polyurethane tackiness agent.
Embodiment 3
A preparation method for nano modified polyurethane tackiness agent, comprises the following steps:
A, polyester diol is heated 2.5h under vacuum conditions, obtain polyether Glycols, described vacuum degree control is at-0.15MPa, and temperature controls at 130 DEG C;
B, gained polyether Glycols is added diphenylmethanediisocyanate at normal temperatures, then temperature rises to 100 DEG C, reaction 3h;
C, then add poly-oxalic acid-BDO esterdiol, temperature controls at 80 DEG C, reaction 5h, obtained performed polymer;
D, add nano silicon by the performed polymer of gained, adopt ultrasonic wave and agitator to stir performed polymer, make nano silicon be evenly distributed on performed polymer, churning time is 60min, obtains nano modified polyurethane simultaneously;
E, gained nano modified polyurethane and polyphenol type glycidyl epoxide resin are reacted 2h, temperature controls, at 80 DEG C, can obtain nano modified polyurethane tackiness agent.
This preparation method is reasonable, and simply, gained nano modified polyurethane tackiness agent has excellent glueability, and snappiness is good simultaneously, mechanical property is strong, anti-impact pressure, and high-and low-temperature resistance is good by force, and can not volatilize nuisance quality human body and environment work the mischief, and can be widely used in industrial circle.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (7)
1. a preparation method for nano modified polyurethane tackiness agent, is characterized in that: comprise the following steps:
A, polyester polyol is heated 1 ~ 2.5h under vacuum conditions, obtain polyether glycol, described vacuum degree control is at-0.05 ~-0.15MPa, and temperature controls at 95 ~ 130 DEG C;
B, gained polyether glycol is added diphenylmethanediisocyanate at normal temperatures, then temperature rises to 60 ~ 100 DEG C, reaction 1.5 ~ 3h;
C, then add poly-oxalic acid-BDO esterdiol, temperature controls at 40 ~ 80 DEG C, reaction 2 ~ 5h, obtained performed polymer;
D, add nano silicon by the performed polymer of gained, adopt ultrasonic wave and agitator to stir performed polymer, make nano silicon be evenly distributed on performed polymer, churning time is 30 ~ 60min, obtains nano modified polyurethane simultaneously;
E, gained nano modified polyurethane and polyphenol type glycidyl epoxide resin are reacted 1 ~ 2h, temperature controls, at 60 ~ 80 DEG C, can obtain nano modified polyurethane tackiness agent.
2. the preparation method of a kind of nano modified polyurethane tackiness agent according to claim 1, it is characterized in that: in described step a, polyester polyol is polyester diol.
3. the preparation method of a kind of nano modified polyurethane tackiness agent according to claim 1, it is characterized in that: in described step b, the mass ratio of polyether glycol and diphenylmethanediisocyanate is 2.5 ~ 3:1.
4. the preparation method of a kind of nano modified polyurethane tackiness agent according to claim 1, is characterized in that: in described step c, mass percent shared by poly-oxalic acid-BDO esterdiol be in step b after reaction gained solution 10% ~ 18%.
5. the preparation method of a kind of nano modified polyurethane tackiness agent according to claim 1, it is characterized in that: in described steps d, mass percent shared by nano silicon is 1% ~ 3% of performed polymer.
6. the preparation method of a kind of nano modified polyurethane tackiness agent according to claim 1, it is characterized in that: in described step e, mass percent shared by polyphenol type glycidyl epoxide resin of receiving is 2% ~ 5% of nano modified polyurethane.
7. the preparation method of a kind of nano modified polyurethane tackiness agent according to claim 1, is characterized in that: in described step e, can add thickening material, linking agent, oxidation inhibitor and stablizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510456491.5A CN105038683A (en) | 2015-07-30 | 2015-07-30 | Preparation method for nano-modified polyurethane adhesive |
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| CN201510456491.5A CN105038683A (en) | 2015-07-30 | 2015-07-30 | Preparation method for nano-modified polyurethane adhesive |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105153990A (en) * | 2015-09-02 | 2015-12-16 | 太仓顺如成建筑材料有限公司 | Preparation method of nano-modified polyurethane adhesive |
| CN106566456A (en) * | 2016-10-28 | 2017-04-19 | 无锡市永兴金属软管有限公司 | Metal corrugated pipe adhesive based on modification of nano-silicon dioxide, and preparation method thereof |
| CN112009052A (en) * | 2020-08-26 | 2020-12-01 | 江苏鼎胜新能源材料股份有限公司 | Preparation method of PET-based heat reflection film |
-
2015
- 2015-07-30 CN CN201510456491.5A patent/CN105038683A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105153990A (en) * | 2015-09-02 | 2015-12-16 | 太仓顺如成建筑材料有限公司 | Preparation method of nano-modified polyurethane adhesive |
| CN106566456A (en) * | 2016-10-28 | 2017-04-19 | 无锡市永兴金属软管有限公司 | Metal corrugated pipe adhesive based on modification of nano-silicon dioxide, and preparation method thereof |
| CN112009052A (en) * | 2020-08-26 | 2020-12-01 | 江苏鼎胜新能源材料股份有限公司 | Preparation method of PET-based heat reflection film |
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Application publication date: 20151111 |