Preparation method of novel dual-cured UV curing binder

A dual-curing, ultraviolet light technology, applied in the direction of bonding method, adhesive type, polyurea/polyurethane adhesive, etc., can solve problems such as easy generation of internal stress, decrease in bond strength, decrease in bond strength, etc.

Inactive Publication Date: 2015-03-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional UV-curable adhesive still has some defects in the specific application process. During the process, internal stress is likely to be generated, resulting in a significant drop in bond strength; in addition, there may be shadows in the bonded parts in some places, and ultraviolet light cannot pass through or can only partially pass through, resulting in these parts not being completely cured, corresponding to these The bonding strength of the parts is reduced and the corrosion resistance and aging resistance are reduced

Method used

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  • Preparation method of novel dual-cured UV curing binder
  • Preparation method of novel dual-cured UV curing binder
  • Preparation method of novel dual-cured UV curing binder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 2-4g of 2,2-dimethoxy-2-phenylacetophenone, 2-3g of benzoyl peroxide, dissolve in 15-20g of hydroxyethyl acrylate, then add 2-4g of silicon dioxide, Stir evenly, then add 5-10g of hexanediol dimethacrylate, 2g of acrylic acid, 3-5g of γ-(methacryloyloxy)propyltrimethoxysilane, 10-20g of liquid polybutadiene, polybutadiene Ester type urethane acrylate 40-60g, stir in a high-speed disperser for 5 minutes, and finally use zirconia beads as the sanding medium, disperse in the sand mill for 2-3 hours, pay attention to cooling with cold water in the jacket of the sand mill to ensure that all The dispersed material temperature should not exceed 45°C.

[0021] The prepared light-curing adhesive is used for bonding experiments. The method is to first wipe two 1cm*1cm glass sheets (or 1 glass sheet and 1 other material) with absolute ethanol to remove grease, and then follow the figure 1 Apply glue as shown, the glue layer is as uniform as possible, and then cure twice. F...

Embodiment 2

[0025] Weigh 2-4g of benzophenone, 2-3g of cumene hydroperoxide, 1-2g of saccharin, 0.5-1g of p-tert-butylcatechol, dissolve in 15-20g of isobornyl methacrylate, and then add 2-4g of bentonite, 5-10g of nano-calcium carbonate, stir evenly, then add 5-10g of hexanediol dimethacrylate, 2g of methacrylic acid, γ-(methacryloyloxy)propyltrimethoxysilane 3-5g, liquid polybutadiene 10-20g, epoxy acrylate 40-60g, stir in a high-speed disperser for 5 minutes, and finally use zirconia beads as the sanding medium, disperse in the sand mill for 2-3 hours, pay attention to the sand Cool water through the jacket of the mill to ensure that the temperature of the dispersed material does not exceed 40°C.

[0026] The configured light-curing adhesive was subjected to a bonding experiment, and the bonding method was the same as in Example 1, and then cured twice. For the first curing, place the bonded sample under a 500w UV lamp, expose for 20s, and reserve the sample for bond strength measurem...

Embodiment 3

[0030] Weigh 1-1.5g of benzophenone, 1-1.5g of 2-hydroxy-methylphenylpropan-1-one, 2-3g of azobisisobutyronitrile, 0.5-1g of hydroquinone, dissolve in 15 -20g of isobornyl acrylate, then add 2-4g of bentonite, 5-10g of nano-calcium carbonate, stir evenly, then add 5-10g of isooctyl acrylate, 5- 10g, 3-5g of γ-aminopropyltriethoxysilane, 10-20g of liquid polybutadiene, 40-60g of polyether polyurethane acrylate, stirring in a high-speed disperser for 5min, and finally using zirconia beads as For sanding medium, disperse in the sand mill for 2-3 hours, and pay attention to cooling with cold water in the jacket of the sand mill to ensure that the temperature of the dispersed material cannot exceed 40°C.

[0031] The configured light-curing adhesive was subjected to a bonding experiment, and the bonding method was the same as in Example 1, and then cured twice. For the first curing, place the bonded sample under a 500w UV lamp, expose it for 20s, and reserve the sample for bond st...

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Abstract

The invention relates to a preparation method of a novel dual-cured UV curing binder, and belongs to the technical field of binder industry. The novel dual-cured UV curable binder is prepared by using radical polymerizable resins such as common urethane acrylate, epoxy acrylate and unsaturated polyester as main binding materials, using a double bond-containing reactive diluent as a solvent, and using a UV initiator and a thermal initiator as a compound initiator, supplemented by other binding agents. During curing, a certain initial binding power is firstly obtained by UV curing, and higher binding power is obtained by secondary curing through heating or oxygen isolation. The preparation method provided by the invention not only has the advantages of high curing speed of the traditional light curing binders, but also has the advantages of effectively avoiding the generation of internal stress in the curing process of the traditional light curing binder, and improving the binding strength of the binder; the binder has excellent solvent resistance, high binding strength, and low cost. The binder is widely used for binding glass and glass, glass and metal materials and other transparent materials.

Description

technical field [0001] The invention discloses a preparation method of a novel dual-curing ultraviolet light-curing adhesive, which belongs to the technical field of the adhesive industry. Background technique [0002] UV-curable adhesive is an adhesive that can be cured rapidly under the irradiation of ultraviolet light. Therefore, light-curable adhesives are used in many automated production lines, especially in industries that require rapid assembly, such as cameras, liquid crystal panels, and CD production. It has been widely used, in addition to the extensive use of light-curing adhesives in glass furniture, glass handicrafts, toys, jewelry and other industries. However, the traditional UV-curable adhesive still has some defects in the specific application process. During the process, internal stress is likely to be generated, resulting in a significant drop in bond strength; in addition, there may be shadows in the bonded parts in some places, and ultraviolet light ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J163/10C09J167/06C09J11/04C09J11/06C09J11/08C09J5/00
Inventor 熊万兵陈明清倪忠斌
Owner JIANGNAN UNIV
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