CN104479612A - A polyurethane adhesive - Google Patents
A polyurethane adhesive Download PDFInfo
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- CN104479612A CN104479612A CN201410553888.1A CN201410553888A CN104479612A CN 104479612 A CN104479612 A CN 104479612A CN 201410553888 A CN201410553888 A CN 201410553888A CN 104479612 A CN104479612 A CN 104479612A
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- polyurethane adhesive
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- polyurethane
- catalyzer
- coupling agent
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Abstract
A polyurethane adhesive is provided. The polyurethane adhesive comprises following components by weight: 10-50 parts of polyurethane prepolymer, 10-25 parts of a plasticizer, 1-5 parts of a coupling agent, 0-20 parts of a filling material and 1-5 parts of a catalyst, wherein the polyurethane prepolymer is obtained by reacting aliphatic polyester diol and diisocyanate. The polyurethane adhesive is reasonable in matching, and the polyurethane prepolymer is obtained by reacting the specific aliphatic polyester diol and the diisocyanate, and therefore the polyurethane adhesive meets national standard regulations in GB/T27630-2011 Guideline for Air Quality Assessment of Passenger Car, namely the total VOC content in air in a car is lower than 10000 [mu]g/m<3>.
Description
Technical field
The present invention relates to field of adhesive technology, particularly relate to a kind of polyurethane adhesive.
Background technology
Automobile adhesives refers to the various caking agent and seal gum used in automobile production repair procedures, comprise motor vehicle repair, body construction, power system, the large class glue kind of operational system four, automobile adhesives not only has unique effect in sealing, protection against corrosion, antiseep, damping damping, sound-insulating and heat-insulating, outward appearance improvement etc., and developed into structural bond replacement welding at body portion, body mechanism quality is alleviated with local bonding and reinforcing material, eliminate stress concentrated, contribute to reducing costs, reduce energy consumption and extend automotive service life.
But, polyurethane adhesive of the prior art is by prepolymer: 60 parts, softening agent: 11 parts, xylene solvent: 4 parts, carbon black: 20 parts, alkylsulphonic acid isocyanide ester: 0.5 part, coupling agent: 1.0 parts, two dibutyl tins: 0.3 part, DBU:0.2 part, other auxiliary agent: 0.3 part, stir and mix.But obnoxious flavour volatile organic compounds (Volatile Organic Compounds, the VOC) content that this polyurethane adhesive produces is 105257 μ g/m
3, considerably beyond 10000 μ g/m of state-set standard
3, the chronic potential hazard that long term brings in human body can not be ignored.
Summary of the invention
The invention provides a kind of polyurethane adhesive, thus reduce the obnoxious flavoures such as VOC, being conducive to car hollow makings amount meets national standard, and namely VOC content is less than 10000 μ g/m
3.
First aspect, the invention provides a kind of polyurethane adhesive, with parts by weight, comprise following composition: polyurethane prepolymer: 10 ~ 50 parts, softening agent: 10 ~ 25 parts, coupling agent: 1 ~ 5 part, filler: 0 ~ 20 part, catalyzer: 1 ~ 5 part, described polyurethane prepolymer is obtained by aliphatic polyester dibasic alcohol and di-isocyanate reaction.
In conjunction with first aspect, in the first possibility embodiment of first aspect, the weight-average molecular weight of described aliphatic polyester dibasic alcohol is 2000 ~ 6000.
In conjunction with the first possibility embodiment of first aspect, in the second possibility embodiment of first aspect, the mol ratio of described aliphatic polyester dibasic alcohol and vulcabond is 0.6 ~ 0.85.
In conjunction with first aspect or first aspect the first may the second of embodiment or first aspect may embodiment, may in embodiment at the third of first aspect, described catalyzer is amine or tin class catalyzer.
In conjunction with first aspect or first aspect the first may the second of embodiment or first aspect may embodiment, may in embodiment at the 4th kind of first aspect, described softening agent is dioctyl phthalate (DOP) DOP.
In conjunction with first aspect or first aspect the first may the second of embodiment or first aspect may embodiment, may in embodiment at the 5th kind of first aspect, described coupling agent is amino silicane coupling agent.
Second aspect, embodiments provides a kind of method of polyurethane adhesive, comprising: carry out drying treatment to polyurethane prepolymer, softening agent, coupling agent, filler and catalyzer; The described polyurethane prepolymer of Homogeneous phase mixing after drying treatment, described softening agent, described coupling agent, described filler and described catalyzer, and be added to forcing machine and extrude; The mixture extruded cooled, batches, be packaged to be described polyurethane adhesive.
In conjunction with second aspect, may in embodiment in the first of second aspect, describedly to the withering drying temperature of polyurethane prepolymer, softening agent, coupling agent, filler and catalyzer be: 80 ~ 100 DEG C.
The invention provides a kind of polyurethane adhesive, comprising: polyurethane prepolymer: 10 ~ 50 parts, softening agent: 10 ~ 25 parts, coupling agent: 1 ~ 5 part, filler: 0 ~ 20 part, catalyzer: 1 ~ 5 part.Wherein, described polyurethane prepolymer by weight-average molecular weight be 2000 ~ 6000 aliphatic polyester dibasic alcohol and di-isocyanate reaction obtain, their mol ratio is 0.6 ~ 0.85, due to polyurethane adhesive reasonable ratio, polyurethane prepolymer is by specific aliphatic polyester dibasic alcohol and di-isocyanate reaction gained simultaneously, thus make the polyurethane adhesive obtained meet national standard, namely in automobile inner air, total VOC content is less than 10000 μ g/m
3.
Embodiment
A kind of polyurethane adhesive, with parts by weight, comprises following composition: polyurethane prepolymer: 10 ~ 50 parts, softening agent: 10 ~ 25 parts, coupling agent: 1 ~ 5 part, filler: 0 ~ 20 part, catalyzer: 1 ~ 5 part.
Described polyurethane prepolymer is obtained by aliphatic polyester dibasic alcohol and di-isocyanate reaction.Alternatively, described polyurethane prepolymer by weight-average molecular weight be 2000 ~ 6000 aliphatic polyester dibasic alcohol and di-isocyanate reaction obtain; Wherein, the mol ratio of described aliphatic polyester dibasic alcohol and vulcabond is 0.6 ~ 0.85.
Alternatively, described catalyzer is amine or tin class catalyzer.
Alternatively, described softening agent is dioctyl phthalate (DOP) (Dioctyl Phthalate, DOP).
Alternatively, described coupling agent is amino silicane coupling agent.
Further, the filler in the present invention can be more than one in carbon black, White Carbon black, organobentonite, polymeric amide, Calcium of intensifiens, talcum powder and kaolin.
The present invention is to polyurethane prepolymer: 10 ~ 50 parts, softening agent: 10 ~ 25 parts, coupling agent: 1 ~ 5 part, filler: 0 ~ 20 part, catalyzer: 1 ~ 5 part adopts preparation method below, specifically comprises:
1, drying treatment is carried out to polyurethane prepolymer, softening agent, coupling agent, filler and catalyzer.
Alternatively, describedly to the withering drying temperature of polyurethane prepolymer, softening agent, coupling agent, filler and catalyzer be: 80 ~ 100 DEG C, usual preferable temperature is: 90 DEG C.
2, the described polyurethane prepolymer of Homogeneous phase mixing after drying treatment, described softening agent, described coupling agent, described filler and described catalyzer, and be added to forcing machine and extrude.
Wherein, described polyurethane prepolymer by weight-average molecular weight be 2000 ~ 6000 aliphatic polyester dibasic alcohol and di-isocyanate reaction obtain; Wherein, the mol ratio of described aliphatic polyester dibasic alcohol and vulcabond is 0.6 ~ 0.85.Described catalyzer is amine or tin class catalyzer.Described softening agent is dioctyl phthalate (DOP) DOP.Described coupling agent is amino silicane coupling agent.Further, the barrel temperature of forcing machine is according to the segmentation situation of forcing machine, the temperature of every section is followed successively by: 120 DEG C, 127 DEG C, 155 DEG C, 155 DEG C, 147 DEG C and 140 DEG C, and the temperature of the head of forcing machine is followed successively by 134 DEG C, 131 DEG C, 131 DEG C, 132 DEG C, 131 DEG C, 131 DEG C and 132 DEG C.
3, the mixture extruded cooled, batch, be packaged to be described polyurethane adhesive.
By polyurethane adhesive proportioning provided by the invention and preparation method, the polyurethane adhesive obtained meets the national standard in GB/T27630-2011 " in passenger car Air Quality Evaluation guide ".Namely in automobile inner air, total VOC content is less than 10000 μ g/m
3.
Polyurethane adhesive of the prior art is by prepolymer: 60 parts, softening agent: 11 parts, xylene solvent: 4 parts, carbon black: 20 parts, alkylsulphonic acid isocyanide ester: 0.5 part, coupling agent: 1.0 parts, two dibutyl tins: 0.3 part, DBU:0.2 part, other auxiliary agent: 0.3 part, stir and mix.Wherein, here prepolymer comprises: molecular weight is the ethyleneoxide propylenenoxide copolymerization trivalent alcohol of 4500 ~ 5000: 350 parts, alkylsulphonic acid fat: 40 parts, 4,4-ditan diisocyanate: 54 parts, but the obnoxious flavour VOC content that this polyurethane adhesive produces is 105257 μ g/m
3, considerably beyond 10000 μ g/m of state-set standard
3.
Present embodiments provide a kind of polyurethane adhesive, comprising: polyurethane prepolymer: 10 ~ 50 parts, softening agent: 10 ~ 25 parts, coupling agent: 1 ~ 5 part, filler: 0 ~ 20 part, catalyzer: 1 ~ 5 part.Wherein, described polyurethane prepolymer by weight-average molecular weight be 2000 ~ 6000 aliphatic polyester dibasic alcohol and di-isocyanate reaction obtain, their mol ratio is 0.6 ~ 0.85, by carrying out drying to above-mentioned all the components, extrude, cooling, batch, packaging, finally obtain polyurethane adhesive, due to polyurethane adhesive reasonable ratio in this process, polyurethane prepolymer is by specific aliphatic polyester dibasic alcohol and di-isocyanate reaction gained simultaneously, thus make the polyurethane adhesive obtained meet national standard, namely in automobile inner air, total VOC content is less than 10000 μ g/m
3.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a polyurethane adhesive, is characterized in that, with parts by weight, comprises following composition: polyurethane prepolymer: 10 ~ 50 parts, softening agent: 10 ~ 25 parts, coupling agent: 1 ~ 5 part, filler: 0 ~ 20 part, catalyzer: 1 ~ 5 part;
Described polyurethane prepolymer is obtained by aliphatic polyester dibasic alcohol and di-isocyanate reaction.
2. polyurethane adhesive according to claim 1, is characterized in that, the weight-average molecular weight of described aliphatic polyester dibasic alcohol is 2000 ~ 6000.
3. polyurethane adhesive according to claim 2, is characterized in that, the mol ratio of described aliphatic polyester dibasic alcohol and vulcabond is 0.6 ~ 0.85.
4. the polyurethane adhesive according to any one of claim 1-3, is characterized in that, described catalyzer is amine or tin class catalyzer.
5. the polyurethane adhesive according to any one of claim 1-3, is characterized in that, described softening agent is dioctyl phthalate (DOP) DOP.
6. the polyurethane adhesive according to any one of claim 1-3, is characterized in that, described coupling agent is amino silicane coupling agent.
7. prepare a method for the polyurethane adhesive described in any one of claim 1-6, it is characterized in that, comprising:
Drying treatment is carried out to polyurethane prepolymer, softening agent, coupling agent, filler and catalyzer;
The described polyurethane prepolymer of Homogeneous phase mixing after drying treatment, described softening agent, described coupling agent, described filler and described catalyzer, and be added to forcing machine and extrude;
The mixture extruded cooled, batches, be packaged to be described polyurethane adhesive.
8. method according to claim 7, is characterized in that, describedly to the withering drying temperature of polyurethane prepolymer, softening agent, coupling agent, filler and catalyzer is: 80 ~ 100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410553888.1A CN104479612A (en) | 2014-10-17 | 2014-10-17 | A polyurethane adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410553888.1A CN104479612A (en) | 2014-10-17 | 2014-10-17 | A polyurethane adhesive |
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|---|---|
| CN104479612A true CN104479612A (en) | 2015-04-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5455293A (en) * | 1994-06-06 | 1995-10-03 | Wood; Benny R. | Water dispersible polyurethane adhesive |
| CN102585753A (en) * | 2012-01-16 | 2012-07-18 | 无锡市万力粘合材料有限公司 | Polyurethane hot-melt adhesive for bonding and preparation method thereof |
| CN103102859A (en) * | 2013-03-05 | 2013-05-15 | 河南省科学院化学研究所有限公司 | Low-volatility catalyst containing polyurethane sealant |
| CN103897651A (en) * | 2014-04-16 | 2014-07-02 | 山东北方现代化学工业有限公司 | Single-component polyurethane sealant of ultralow volatile organic compound (VOC) and preparation method thereof |
-
2014
- 2014-10-17 CN CN201410553888.1A patent/CN104479612A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5455293A (en) * | 1994-06-06 | 1995-10-03 | Wood; Benny R. | Water dispersible polyurethane adhesive |
| CN102585753A (en) * | 2012-01-16 | 2012-07-18 | 无锡市万力粘合材料有限公司 | Polyurethane hot-melt adhesive for bonding and preparation method thereof |
| CN103102859A (en) * | 2013-03-05 | 2013-05-15 | 河南省科学院化学研究所有限公司 | Low-volatility catalyst containing polyurethane sealant |
| CN103897651A (en) * | 2014-04-16 | 2014-07-02 | 山东北方现代化学工业有限公司 | Single-component polyurethane sealant of ultralow volatile organic compound (VOC) and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李绍雄: "《聚氨酯树脂及其应用》", 31 May 2002, 化学工业出版社 * |
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