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A kind of UV-curable adhesive doped with nano-titanium dioxide and its preparation method

A technology of nano-titanium dioxide and ultraviolet light, which is applied in the direction of adhesives, adhesive additives, adhesive types, etc., to achieve the effects of reducing costs, high tensile strength, and reducing the chance of compounding

Active Publication Date: 2020-05-26
YANTAI SEAYU NEW MATERIALS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a UV-curable adhesive doped with nano-titanium dioxide and a preparation method thereof. , easy to peel off in the later stage, and the glue has no residue on the metal shell and no peeling off

Method used

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  • A kind of UV-curable adhesive doped with nano-titanium dioxide and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0049] It consists of the following raw materials in parts by weight: 40 parts of self-made bifunctional urethane acrylate prepolymer, 10 parts of multifunctional urethane acrylate prepolymer, 8 parts of polyester acrylate prepolymer, and 12 parts of reactive amine complexing agent , 20 parts of acrylate reactive diluent, 2 parts of leveling wetting agent, 2 parts of photoinitiator, 1 part of titanium dioxide nanopowder, 5 parts of fumed silica;

[0050] The self-made bifunctional polyurethane acrylate prepolymer is carried out according to the following steps:

[0051] Dehydrate the polyether diol at a temperature of 110°C and a pressure of -0.098MPa for 1.5 hours; add diisocyanate at a temperature of 60°C and a pressure of -0.098, stir for 0.6h, add a catalyst, and React at 75°C and pressure -0.098MPa for 2h; Add polymerization inhibitor and hydroxyl-containing acrylate in sequence and stir for 2h at temperature 70°C and pressure -0.098MPa, take samples every 30min with infr...

Embodiment 2

[0062] It consists of the following raw materials in parts by weight: 40 parts of self-made bifunctional urethane acrylate prepolymer, 10 parts of multifunctional urethane acrylate prepolymer, 8 parts of polyester acrylate prepolymer, and 12 parts of reactive amine complexing agent , 20 parts of acrylate reactive diluent, 2 parts of leveling wetting agent, 2 parts of photoinitiator, 1.5 parts of titanium dioxide nanopowder, 4.5 parts of fumed silica;

[0063] The self-made bifunctional polyurethane acrylate prepolymer is carried out according to the following steps:

[0064] Dehydrate the polyether diol at a temperature of 110°C and a pressure of -0.098MPa for 1.5 hours; add diisocyanate at a temperature of 60°C and a pressure of -0.098, stir for 0.6h, add a catalyst, and React at 75°C and pressure -0.098MPa for 2h; Add polymerization inhibitor and hydroxyl-containing acrylate in sequence and stir for 2h at temperature 70°C and pressure -0.098MPa, take samples every 30min with...

Embodiment 3

[0075] It consists of the following raw materials in parts by weight: 40 parts of self-made bifunctional urethane acrylate prepolymer, 10 parts of multifunctional urethane acrylate prepolymer, 8 parts of polyester acrylate prepolymer, and 12 parts of reactive amine complexing agent , 20 parts of acrylate reactive diluent, 2 parts of leveling wetting agent, 2 parts of photoinitiator, 2 parts of titanium dioxide nanopowder, 4 parts of fumed silica;

[0076] The self-made bifunctional polyurethane acrylate prepolymer is carried out according to the following steps:

[0077] Dehydrate the polyether diol at a temperature of 110°C and a pressure of -0.098MPa for 1.5 hours; add diisocyanate at a temperature of 60°C and a pressure of -0.098, stir for 0.6h, add a catalyst, and React at 75°C and pressure -0.098MPa for 2h; Add polymerization inhibitor and hydroxyl-containing acrylate in sequence and stir for 2h at temperature 70°C and pressure -0.098MPa, take samples every 30min with inf...

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Abstract

The invention relates to an ultraviolet light curing adhesive doped with nano titanium dioxide and a preparation method of same. The ultraviolet light curing adhesive is composed of, by weight, 20-60 parts of a self-made bifunctional polyurethane-acrylate prepolymer, 5-15 parts of a multifunctional polyurethane-acrylate prepolymer, 5-15 parts of a polyester-acrylate prepolymer, 5-20 parts of a reactive amine compounding agent, 10-30 parts of an acrylate-type activity diluent, 0.5-5% of a flatting and wetting agent, 1-5% of a photoinitiator, 0.5-3 parts of titanium dioxide nano-powder, and 0.1-10 parts of fumed silica. The ultraviolet light curing adhesive is suitable for temporary protection for metal shells, has protective effect during a later-period treatment process of CNC and can be easily stripped-off after the CNC machining. The adhesive has no residue and stripping off on the metal shells.

Description

technical field [0001] The invention relates to an ultraviolet curing adhesive doped with nanometer titanium dioxide and a preparation method thereof. Background technique [0002] With the continuous expansion of the application field of ultraviolet light technology, ultraviolet light curing adhesives play an important role in electronic products such as mobile phones, televisions, and computers. In this era when user experience is highly valued, more and more manufacturers of mobile phones, notebooks, and wearable devices have begun to focus on shell materials. From the perspective of the mobile phone field, the shell material is gradually transitioning from engineering plastics to metal. When it comes to all metal, CNC must be mentioned. At present, the all-metal casings of 3C products are basically processed by CNC machine tools (Computer numerical control machine tools, CNC). Because of its advantages of high efficiency, high precision and stable processing quality, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J167/06C09J11/04C08G18/67C08G18/48
CPCC08G18/4833C08G18/672C08K2003/2241C08K2201/011C08L2205/03C08L2205/035C09J11/04C09J175/14C08L75/14C08L67/06C08K3/22C08K3/36C08G18/48
Inventor 李不悔李峰贺国新张利文
Owner YANTAI SEAYU NEW MATERIALS CORP LTD
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