CN105153990A - Preparation method of nano-modified polyurethane adhesive - Google Patents
Preparation method of nano-modified polyurethane adhesive Download PDFInfo
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- CN105153990A CN105153990A CN201510552283.5A CN201510552283A CN105153990A CN 105153990 A CN105153990 A CN 105153990A CN 201510552283 A CN201510552283 A CN 201510552283A CN 105153990 A CN105153990 A CN 105153990A
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- modified polyurethane
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- tackiness agent
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Abstract
The invention discloses a preparation method of nano-modified polyurethane adhesive. The preparation method comprises the steps of a, heating polyester polyol for 1 to 2.5h under a vacuum environment to obtain polyether polyol; b, adding the obtained polyether polyol into diphenyl-methane-diisocyanate at the room temperature for reacting; c, adding poly oxalic acid-1,4-butylene adipate glycol for reacting to prepare a prepolymer; d, adding the obtained prepolymer into nanosilicon dioxide, and stirring the prepolymer simultaneously by adopting ultrasonic waves and a stirrer, so as to obtain nano-modified polyurethane; e, enabling the obtained nano-modified polyurethane to react with polyphenol type glycidol epoxy resin for 1 to 2h, so as to obtain the nano-modified polyurethane adhesive. The preparation method is reasonable and simple, and the obtained nano-modified polyurethane adhesive has excellent adhesive property, good flexibility, high mechanical property, and good impact resistance, high-temperature resistance and low-temperature resistance, cannot volatilize noxious substances to harm human bodies and environment, and can be widely applied to the field of industry.
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.
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| CN201510552283.5A CN105153990A (en) | 2015-09-02 | 2015-09-02 | Preparation method of nano-modified polyurethane adhesive |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105602513A (en) * | 2015-12-30 | 2016-05-25 | 扬州市金鑫电缆有限公司 | Special cable for longitudinally water-stop anti-corrosion ship |
| CN110819289A (en) * | 2019-11-13 | 2020-02-21 | 江苏理工学院 | Polyurethane adhesive and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038683A (en) * | 2015-07-30 | 2015-11-11 | 南通惠然生物科技有限公司 | Preparation method for nano-modified polyurethane adhesive |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038683A (en) * | 2015-07-30 | 2015-11-11 | 南通惠然生物科技有限公司 | Preparation method for nano-modified polyurethane adhesive |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105602513A (en) * | 2015-12-30 | 2016-05-25 | 扬州市金鑫电缆有限公司 | Special cable for longitudinally water-stop anti-corrosion ship |
| CN110819289A (en) * | 2019-11-13 | 2020-02-21 | 江苏理工学院 | Polyurethane adhesive and preparation method thereof |
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Application publication date: 20151216 |