A kind of polyurethane adhesive and preparation method thereof
A technology of polyurethane adhesive and coupling agent, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problems of low bonding strength, unstable quality, endangering the health of consumers, etc. Achieve good peel strength, overcome quality instability, and reduce processing and coating costs
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Embodiment 1
[0047] The polyurethane adhesive provided in this embodiment includes component A and component B, wherein component A is a polyurethane prepolymer terminated by isocyanate groups, component B is a polyol compound terminated by hydroxyl groups, and in component A, the isocyanate group and the group The molar ratio of hydroxyl groups in Part B is 1.7:1, where:
[0048] Component A is mainly made of the following raw materials in parts by mass:
[0049] Oligomer resin a: 60
[0050] Polyisocyanate: 105
[0051] oligomer polyol: 20;
[0052] Component B is mainly made of the following raw materials in parts by mass:
[0053] Oligomer resin b: 150
[0054] Polyisocyanate: 5.5
[0055] Hyperbranched polymer: 5.0
[0056] Nanomaterials: 0.5
[0057] Coupling agent: 1.0
[0058] Defoamer: 0.2
[0059] Leveling agent: 0.05;
[0060] Wherein the oligomer resin a and oligomer resin b are prepared by reacting small molecular polybasic acid and small molecular polyol through pol...
Embodiment 2
[0078] The polyurethane adhesive provided in this embodiment includes component A and component B, wherein component A is a polyurethane prepolymer terminated by isocyanate groups, component B is a polyol compound terminated by hydroxyl groups, and in component A, the isocyanate group and the group The molar ratio of hydroxyl groups in Part B is 1.9:1, where:
[0079] Component A is mainly made of the following raw materials in parts by mass:
[0080] Oligomer resin a: 70
[0081] Polyisocyanate: 85
[0082] oligomer polyol: 25;
[0083] Component B is mainly made of the following raw materials in parts by mass:
[0084] Oligomer resin b: 130
[0085] Polyisocyanate: 10
[0086] Hyperbranched polymer: 4.0
[0087] Nanomaterials: 0.7
[0088] Coupling agent: 0.8
[0089] Defoamer: 0.4
[0090] Leveling agent: 0.1;
[0091] Wherein the oligomer resin a and oligomer resin b are prepared by reacting small molecular polybasic acid and small molecular polyol through polyes...
Embodiment 3
[0107] The polyurethane adhesive provided in this embodiment includes component A and component B, wherein component A is a polyurethane prepolymer terminated by isocyanate groups, component B is a polyol compound terminated by hydroxyl groups, and in component A, the isocyanate group and the group The molar ratio of hydroxyl groups in Part B is 2.0:1, where:
[0108] Component A is mainly made of the following raw materials in parts by mass:
[0109] Oligomer resin a: 80
[0110] Polyisocyanate: 135
[0111] oligomer polyol: 25;
[0112] Component B is mainly made of the following raw materials in parts by mass:
[0113] Oligomer resin b: 140
[0114] Polyisocyanate: 7
[0115] Hyperbranched polymer: 3.0
[0116] Nanomaterials: 0.8
[0117] Coupling agent: 0.7
[0118] Defoamer: 00.5
[0119] Leveling agent: 0.2;
[0120] Wherein the oligomer resin a and oligomer resin b are prepared by reacting small molecular polybasic acid and small molecular polyol through polye...
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