Silane modified epoxidized soybean oil-polylactic acid polyurethane composition and preparation method thereof

A technology of epoxidized soybean oil and silane modification, applied in the direction of polyurea/polyurethane adhesives, adhesive types, adhesives, etc., can solve the problems of poor biodegradability, poor storage stability, unfriendly environment, etc. Environmentally friendly, low-cost, wide-ranging effects

Inactive Publication Date: 2020-04-21
荆晓东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, one-component polyurethane adhesive products only use conventional polyether polyols to react with isocyanate and other components, and the resulting products have many

Method used

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  • Silane modified epoxidized soybean oil-polylactic acid polyurethane composition and preparation method thereof
  • Silane modified epoxidized soybean oil-polylactic acid polyurethane composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 50 parts of polyether polyol DX-1 (functionality 2, molecular weight 1000), 50 parts of polyester polyol DX-2 (functionality 3, molecular weight 2000) and pour them into a three-necked flask, and raise the temperature to 110°C under nitrogen protection , dehydrated until the water content is less than 0.02%, drop in 5 parts of epoxy soybean oil, react at 110°C for 3 hours, drop in 38 parts of TDI, 25 parts of 1,4-butanediol, and add 20 mesh polylactic acid under the protection of nitrogen at 80°C 20 parts were stirred and reacted for 2 hours, heated up to 120°C, 10 parts of vinyltriethoxysilane was added dropwise, and reacted for 3 hours to obtain an adhesive product.

Embodiment 2

[0026] Take 150 parts of polyether polyol DX-1 (functionality 2, molecular weight 6000), 50 parts of polyester polyol DX-2 (functionality 3, molecular weight 8000), pour them into a three-necked flask, and raise the temperature to 150 under nitrogen protection. Dehydrate at ℃ until the water content is less than 0.02%, add 25 parts of epoxidized soybean oil dropwise, react at 120℃ for 4 hours, cool down to 90℃, add dropwise 30 parts of TDI, 55 parts of trimethylolpropane, and 50 parts of 80 mesh polylactic acid Stir the reaction for 3 hours, raise the temperature to 120° C., drop in 15 parts of vinyltrimethoxysilane and react for 5 hours to obtain an adhesive product.

Embodiment 3

[0030] Take 200 parts of polyether polyol DX-1 (functionality 4, molecular weight 10000), 100 parts of polyester polyol DX-2 (functionality 3, molecular weight 5000) and pour them into a three-necked flask, and raise the temperature to 130°C under nitrogen protection Dehydrate until the water content is less than 0.02%, add 10 parts of epoxidized soybean oil dropwise, react at 130°C for 5 hours, cool down to 100°C, drop in 42 parts of TDI, 25 parts of triethanolamine, add 100 parts of 100-mesh polylactic acid, and stir for reaction After 3 hours, the temperature was raised to 130° C., and 35 parts of vinyl tris(β-methoxyethoxy)silane was added dropwise to react for 8 hours to obtain an adhesive product.

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Abstract

The invention relates to a silane modified epoxidized soybean oil-polylactic acid polyurethane composition and a preparation method thereof, belonging to the technical field of polyurethane modification. The silane modified epoxidized soybean oil-polylactic acid polyurethane composition comprises the following raw materials in parts by mass: 0 to 200 parts of polyether polyol, 0 to 200 parts of polyester polyol, 5 to 100 parts of epoxidized soybean oil, 10 to 100 parts of toluene diisocynate, 20 to 200 parts of polylactic acid, 20 to 100 parts of a chain extender and 5 to 100 parts of a silanecoupling agent. A polyurethane product prepared from the silane modified epoxidized soybean oil-polylactic acid polyurethane composition disclosed by the invention is good in storage stability, biocompatibility and degradability, excellent in physical and chemical properties, wide in raw material source, low in cost, saving in energy and friendly to the environment. The invention also provides asimple and feasible preparation method for polyurethane at the same time.

Description

technical field [0001] The invention relates to a silane-modified epoxy soybean oil-polylactic acid polyurethane composition and a preparation method thereof, belonging to the technical field of polyurethane modification. Background technique [0002] Polylactic acid (PLA) is a non-toxic, green and naturally biodegradable material. It not only has good chemical inertness and easy processing, but also has good biocompatibility, and has a wide range of uses in the field of polymers. Widely used in the field of biomedical materials. [0003] Epoxidized soybean oil is a chemical product obtained after oxidation treatment of soybean oil. It is a light yellow viscous oily liquid at room temperature. It is a non-toxic plasticizer and stabilizer for polyvinyl chloride widely used. It is compatible with PVC The resin has good compatibility, low volatility and low migration. Epoxidized soybean oil has excellent thermal stability and light stability, good water resistance and oil re...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/42C08G18/36C08G18/32C08G18/83C09J175/04C09J175/06C09J175/08
CPCC08G18/36C08G18/4018C08G18/4202C08G18/428C08G18/4825C08G18/4829C08G18/6607C08G18/6611C08G18/6622C08G18/6629C08G18/7614C08G18/837C09J175/04C09J175/06C09J175/08
Inventor 荣若贵孙言丛
Owner 荆晓东
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