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Polyurethane adhesive with high humidity and heat resistance, protective film and preparation method thereof

A technology of polyurethane glue and polyurethane glue, applied in the direction of polyurea/polyurethane adhesive, adhesive, film/flake adhesive, etc. Effect of heat resistance, good mechanical properties, good hydrolysis resistance

Active Publication Date: 2021-11-12
CYBRID TECHNOLOGIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding too much F-containing hydroxyl resin will affect the haze of the product, and when the amount is small, the barrier layer will have a lower limit

Method used

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  • Polyurethane adhesive with high humidity and heat resistance, protective film and preparation method thereof
  • Polyurethane adhesive with high humidity and heat resistance, protective film and preparation method thereof
  • Polyurethane adhesive with high humidity and heat resistance, protective film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] The high heat-and-moisture-resistant polyurethane adhesive of this embodiment is, from top to bottom, a substrate layer, a polyurethane adhesive layer with high heat-and-moisture resistance, and a release film layer, wherein the substrate layer is specifically a 50 μm PET original film; the polyurethane adhesive layer with high heat-and-moisture resistance, The components are as follows: 100 parts of polyurethane glue (polyurethane glue is composed of polycarbonate polyol (UH-300 number average molecular weight 3000 hydroxyl value 34-40 from Ube Industries, Ltd.), polyether polyol (National Chemical Industry DP2000E number average molecular weight 2000 hydroxyl value) value 53-58), polyester polyol (PCL220AL number average molecular weight 2000, hydroxyl value 53-59) of Dalu Chemical Co., Ltd. polymerized, the mass ratio is: 60:20:20); 7.5 parts of hexamethylene diisocyanate Trimer curing agent; 2 parts of antistatic agent (lithium bistrifluoromethanesulfonimide); 1 part...

Embodiment 2

[0053] The high heat-and-moisture-resistant polyurethane adhesive of this embodiment is, from top to bottom, a substrate layer, a polyurethane adhesive layer with high heat-and-moisture resistance, and a release film layer, wherein the substrate layer is specifically a 50 μm PET original film; the polyurethane adhesive layer with high heat-and-moisture resistance, The components are as follows: 100 parts of polyurethane glue (polyurethane glue is made of polycarbonate polyol (Ube Industries Co., Ltd. UH-300), polyether polyol (National Chemical Industry DP2000E), polyester polyol (Dailu Chemical Co., Ltd. PCL220AL) Polymerized, the mass ratio is: 80:10:10); 9 parts of trimer curing agent of hexamethylene diisocyanate; 1 part of antistatic agent (lithium bistrifluoromethanesulfonimide); 0.5 part of imine; 1 part of surfactant (organic silicon leveling agent BYK3700, Germany); 0.12 part of dibutyltin dilaurate; add ethyl acetate as a dilution solvent to a solid content of 40%; an...

Embodiment 3

[0058] The high heat-and-moisture-resistant polyurethane adhesive of this embodiment is, from top to bottom, a substrate layer, a polyurethane adhesive layer with high heat-and-moisture resistance, and a release film layer, wherein the substrate layer is specifically a 50 μm PET original film; the polyurethane adhesive layer with high heat-and-moisture resistance, The components are as follows: 100 parts of polyurethane glue (polyurethane glue is made of polycarbonate polyol (Ube Industries Co., Ltd. UH-300), polyether polyol (National Chemical Industry DP2000E), polyester polyol (Dailu Chemical Co., Ltd. PCL220AL) Polymerized, the mass ratio is: 70:10:20); 9.2 parts of trimer curing agent of hexamethylene diisocyanate; 1 part of antistatic agent (lithium trifluoromethanesulfonimide); 1 part of imine; 1.2 parts of surfactant (organic silicon leveling agent BYK3700 Germany); 0.12 parts of dibutyltin dilaurate; add ethyl acetate as a dilution solvent to 40% solid content; antista...

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Abstract

The invention discloses a polyurethane adhesive with high humidity and heat resistance, a protective film and a preparation method thereof. The polyurethane adhesive with high humidity and heat resistance comprises the following components in parts by weight: 100 parts of polyurethane resin, 5-20 parts of a curing agent, 0.1-2 parts of an antistatic agent, 0.1-2 parts of an antioxidant, 0.1-2 parts of a catalyst and 0.1-3 parts of a surfactant, wherein the polyurethane glue is prepared from polycarbonate polyol, polyether polyol and other polyester polyol according to the mass ratio of (60-90): (10-40): (1-20). The polyurethane adhesive with high humidity and heat resistance has better heat resistance, hydrolysis resistance, oxidation resistance and wear resistance, and the phenomena of rime fog, circle marks and the like can be avoided after long-time high-temperature and high-humidity environment testing.

Description

technical field [0001] The invention relates to the technical field of polyurethane protective films, relates to a polyurethane glue, a protective film and a preparation method thereof, in particular to a high heat and humidity resistant polyurethane glue, a protective film and a preparation method thereof. Background technique [0002] In recent years, as the usage of car screen protective films has increased significantly, there are higher requirements for the weather resistance of the protective films. Commonly used protective films include silicone-based protective films, acrylic-based protective films, and polyurethane (PU)-based protective films. However, silicone-based protective films are prone to silicon transfer and affect product appearance, and acrylic-based protective films are prone to powder drop when die-cutting. It is not conducive to customer use. The PU protective film currently on the market can generally achieve no pollution for the AF coating screen 60℃...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J175/06C09J175/08C09J11/06C09J7/30C08G18/44C08G18/42C08G18/48
CPCC09J175/04C09J175/06C09J175/08C09J11/06C09J7/30C08G18/4018C08G18/44C08G18/42C08G18/48C08L2201/08C09J2467/006C09J2475/00C08K5/29
Inventor 陈炼李阜阳茅琦陈洪野吴小平
Owner CYBRID TECHNOLOGIES INC