Polyurethane moisture-curing hot melt coating glue, as well as preparation method and application thereof

A moisture-curing, polyurethane technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., to achieve the effect of simple operation, excellent initial strength, and fast curing

Inactive Publication Date: 2012-09-12
舒跃辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are very few products on t

Method used

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  • Polyurethane moisture-curing hot melt coating glue, as well as preparation method and application thereof
  • Polyurethane moisture-curing hot melt coating glue, as well as preparation method and application thereof
  • Polyurethane moisture-curing hot melt coating glue, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Weighing and compounding polyester polyol mixture, its composition and weight ratio are:

[0037] Grade PHL-1600 20 copies

[0038] Grade PH-2000 16 copies

[0039] Grade CMA-1044 40 copies

[0040] Grade CMA-44 12 copies;

[0041] (2) Calculated in parts by weight, weigh 1120 parts of the above-mentioned polyester polyol mixture, 282 parts of polyamide resin, 17 parts of terpene resin, 19 parts of YH-55 coupling agent, and 7 parts of fumed silica into the reaction kettle , under the pressure of -0.08~-0.1 MPa, heat up to 100°C to melt, dehydrate until the liquid material has no bubbles to escape, cool down to 80°C, and then weigh 158 parts of diphenylmethyl diisocyanate (MDI) and 50 parts of toluene Add diisocyanate (TDI) into the reactor for polymerization reaction for 3 hours until the molar percentage of residual isocyanate reaches 0.5%, then add 0.9 parts of bismorpholino diethyl ether, continue to stir and disperse for 25 minutes, and cool down to 60°C, fi...

Embodiment 2

[0044] (1) Weighing and compounding polyester polyol mixture, its composition and weight ratio are:

[0045] Grade PHL-1600 30 copies

[0046] Grade PH-2000 12 copies

[0047] Grade CMA-1044 16 copies

[0048] Grade CMA-44 15 copies;

[0049] (2) Calculated in parts by weight, weigh the polyester polyol mixture, plasticizer and chain extender (see the data in Table 1), heat up to 110°C under a pressure of -0.08 to -0.1 MPa, melt and dehydrate to The liquid material has no bubbles escaping, and the temperature is lowered to 90°C, then weighed the diisocyanate (see Table 1), and put it into the reactor for polymerization reaction for about 4 hours, until the molar percentage of the residual isocyanate reaches 1%, then add 1.0 Mix two parts of bismorpholino diethyl ether, continue to stir and disperse for 30 min, cool down to 65°C, filter while hot, discharge the material, immediately seal and pack to obtain polyurethane moisture-curing hot-melt coating adhesive.

[0050]The...

Embodiment 3

[0052] (1) Weighing and compounding polyester polyol mixture, its composition and weight ratio are:

[0053] Grade PHL-1600 45 copies

[0054] Grade PH-2000 18 copies

[0055] Grade CMA-1044 45 copies

[0056] Grade CMA-44 20 copies;

[0057] (2) Calculated in parts by weight, weigh the polyester polyol mixture, plasticizer and chain extender (see Table 1), heat up to 120°C under a pressure of -0.08 to -0.1 MPa to melt and dehydrate to a liquid material No bubbles escape, cool down to 80°C, then weigh the diisocyanate (see Table 1), add it to the reactor for polymerization for about 4.5 hours, until the molar percentage of residual isocyanate reaches 1.2%, continue to stir and disperse for 25 minutes , cooled to 60°C, filtered while hot, discharged, immediately sealed and packaged to obtain polyurethane moisture-curing hot-melt coating adhesive.

[0058] The open time of the polyurethane moisture-curing hot-melt coating adhesive obtained in this example is 19 seconds, the ...

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Abstract

The invention belongs to the technical field of a chemical adhesive, and relates to a polyurethane moisture-curing hot melt coating glue used for covering a special-shaped surface of furniture and a decoration component, and a preparation method of the polyurethane moisture-curing hot melt coating glue. The polyurethane moisture-curing hot melt coating glue comprises the raw materials based in parts by weight: polyester polyol mixture, diisocyanate, plasticizer, chain extender and tackifying resin, wherein the relative molecular mass of the polyester polyol mixture is 2000-8000, and consists of trade names including PHL-1600, PH-2000, CMA-1044 and CMA-44; and the diisocyanate is selected from one or more of benzhydryl diisocyanate, toluene diisocynate and hexamethylene diisocyanate. The polyurethane moisture-curing hot melt coating glue does not contain any organic solvent, has the solid content of 100%, is rapid in moisture curing and simple in operation, is higher in final bonding strength by crosslinking curing, is compact in binding, and can show the artistic aesthetic feeling of the original work delicately.

Description

technical field [0001] The invention belongs to the technical field of chemical adhesives, and relates to a polyurethane moisture-curing hot-melt coating adhesive and a production method thereof, as well as its application in coating special-shaped surfaces of furniture and decorative components. Background technique [0002] In the 1940s, polyurethane adhesives began to become one of many adhesives. After the 1980s, it developed rapidly. By adjusting its raw materials and formulas, polyurethane adhesives with different properties can be designed. So far, it has become a variety of adhesives. , A widely used type of adhesive. In 1984, reactive PU-HMA (polyurethane hot melt adhesive) appeared on the US market, which solved many shortcomings in the use of PU adhesives in the past. [0003] Moisture-curing PU-HMA has the advantages of both HMA adhesives and reactive adhesives. Due to the high instantaneous bonding strength of PUR, excellent initial strength, and cross-linking ...

Claims

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Application Information

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IPC IPC(8): C09J175/06C09J177/00C09J145/00C08G18/66C08G18/42
Inventor 舒跃辉田俊玲
Owner 舒跃辉
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