Organosilane coupling agent modified ultraviolet curing material

A silane coupling agent and curing material technology, applied in the field of materials, to achieve the effects of thermal stability and water contact angle performance improvement, strong adhesion, and simple preparation methods

Active Publication Date: 2019-12-31
临沂中科芯华新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, organosilane coupling agents are used to modify polyether-based hyperbranched polyurethanes and prepare acid resistance, curing time, gel content, adhesion, water contact angle, water adsorption rate, emulsion particle size distribution, latex particle morphology and There are no relevant reports on UV-curable materials with excellent thermal stability and other properties

Method used

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  • Organosilane coupling agent modified ultraviolet curing material
  • Organosilane coupling agent modified ultraviolet curing material
  • Organosilane coupling agent modified ultraviolet curing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of ultraviolet curing material, it adopts following method to prepare:

[0037] (1) Water-borne hyperbranched polyester Boltorn H20

[0038] Aqueous modification of hyperbranched polyester grafted carboxyl groups was carried out by transesterification reaction. In there-necked flask, add 20g (11.4mmol) hyperbranched polyester Boltorn H20 and 6.86g (68.4mol) succinic anhydride, then add 100ml 1,4-dioxane for dissolving, then add suitable transesterification catalyst tin chloride, The temperature of the reaction system was raised to 100° C., and the reaction was carried out at constant temperature for 24 hours. After the reaction is completed, the solvent and a small amount of water are removed by distillation under reduced pressure to obtain the carboxyl-modified hyperbranched polyester BoltornH20.

[0039] (2) Synthesis of methacrylate-based modified polyether-based polyurethane prepolymer

[0040] Anhydrous 1,4-dioxane was added into the three-necked flask, n...

Embodiment 2

[0044] A UV-curable material modified by an organosilane coupling agent, which is prepared by the following method:

[0045] (1) Water-borne hyperbranched polyester Boltorn H20

[0046] Aqueous modification of hyperbranched polyester grafted carboxyl groups was carried out by transesterification reaction. In there-necked flask, add 20g (11.4mmol) hyperbranched polyester Boltorn H20 and 6.86g (68.4mol) succinic anhydride, then add 100ml 1,4-dioxane for dissolving, then add suitable transesterification catalyst tin chloride, The temperature of the reaction system was raised to 100° C., and the reaction was carried out at constant temperature for 24 hours. After the reaction is completed, the solvent and a small amount of water are removed by distillation under reduced pressure to obtain the carboxyl-modified hyperbranched polyester BoltornH20.

[0047] (2) Synthesis of methacrylate-based modified polyether-based polyurethane prepolymer

[0048] Anhydrous 1,4-dioxane was added...

Embodiment 3

[0052] A UV-curable material modified by an organosilane coupling agent, which is prepared by the following method:

[0053] (1) Water-borne hyperbranched polyester Boltorn H20

[0054] Aqueous modification of hyperbranched polyester grafted carboxyl groups was carried out by transesterification reaction. In there-necked flask, add 20g (11.4mmol) hyperbranched polyester Boltorn H20 and 6.86g (68.4mol) succinic anhydride, then add 100ml 1,4-dioxane for dissolving, then add suitable transesterification catalyst tin chloride, The temperature of the reaction system was raised to 100° C., and the reaction was carried out at constant temperature for 24 hours. After the reaction is completed, the solvent and a small amount of water are removed by distillation under reduced pressure to obtain the carboxyl-modified hyperbranched polyester BoltornH20.

[0055] (2) Synthesis of methacrylate-based modified polyether-based polyurethane prepolymer

[0056] Anhydrous 1,4-dioxane was added...

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Abstract

Belonging to the technical field of materials, the invention discloses an organosilane coupling agent modified ultraviolet curing material. The preparation method includes: reacting hyperbranched polyester Boltorn H20 with succinic anhydride to prepare a hydrophilic hyperbranched polyester, and then carrying out reaction with a methacrylate group modified polyether based polyurethane prepolymer and 3-isocyanatopropyltriethoxysilane (IPTS) sequentially to synthesize organosilane coupling agent modified ultraviolet-cured polyether hyperbranched waterborne polyurethane (WHPU). A film formed by curing of the prepared organosilane coupling agent modified ultraviolet curing material has a gel content up to 92%, and the adhesive force on a surface of glass reaches grade 0; and compared with WHPUwithout an organosilane coupling agent, the WHPU has remarkably improved thermal stability and water contact angle performance, significantly reduced water absorption rate, and provides certain theoretical basis for modification and research of WHPU.

Description

technical field [0001] The invention discloses an ultraviolet light curing material modified by an organic silane coupling agent, which belongs to the technical field of materials. Background technique [0002] UV-curable hyperbranched waterborne polyurethane (WHPU) is a hyperbranched polyurethane grafted with double bonds at the end of the hydrophilic polyurethane segment. widespread attention. WHPU has the characteristics of fast curing rate, excellent coating performance and low environmental pollution, and has been widely used in the fields of coatings, adhesives and inks. At present, the preparation of WHPU is usually to synthesize hyperbranched polyurethane first, and then carry out graft modification with hydroxyl acrylate monomers containing double bonds. Due to the existence of branch points, the number of carbamate bonds is small, and the excellent properties of polyurethane The performance cannot be reflected; at the same time, due to its structural characterist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/71C08G18/75C08G18/67C08G18/42C08G18/48C08G18/12C08G63/91
CPCC08G18/12C08G18/4018C08G18/42C08G18/4825C08G18/672C08G18/718C08G18/755C08G63/91C08G18/40
Inventor 李兴建修阳瑞博
Owner 临沂中科芯华新材料科技有限公司
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