Bio-based photosensitive polyurethane resin, and self-repairing coating made of resin

A polyurethane resin, bio-based dimeramine technology, used in polyurea/polyurethane coatings, coatings, etc., to achieve high curing efficiency, improve repair efficiency, and fast curing speed

Inactive Publication Date: 2016-08-17
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Bio-based photosensitive polyurethane resin, and self-repairing coating made of resin
  • Bio-based photosensitive polyurethane resin, and self-repairing coating made of resin

Examples

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Embodiment 1

[0029] (1) Synthesis of bio-based photosensitive polyurethane resin: First, add 50.000g PEG-1000, 0.401g dilauric acid di Butyltin and 60g of anhydrous chloroform were stirred to form a clear solution; at the same time, a mixture of 16.820g of hexamethylene diisocyanate and 30g of anhydrous chloroform was slowly added dropwise to the flask, and reacted at 50°C for 7h. Continue to drop 31.980 g of Priamine 1074 and 40 g of anhydrous chloroform mixture, and react at 25° C. for 6 h to obtain a bio-based polyurethane solution with an amino terminal. Secondly, a mixture of 4.786g UPy-NCO and 100g anhydrous chloroform was slowly added dropwise, and the reaction was kept at 25°C for 6h to obtain a self-healing bio-based polyurethane solution. Finally, slowly drop a mixture of 4.655g isocyanoethyl methacrylate, 0.093g hydroquinone, and 30g anhydrous chloroform, keep the reaction at 30°C for 6 hours, and rotate to evaporate the excess chloroform solution , to obtain a bio-based photos...

Embodiment 2

[0032](1) Synthesis of bio-based photosensitive polyurethane resin: First, add 50.000g PEG-1000, 0.401g dilauric acid di Butyltin and 60g of anhydrous chloroform were stirred to form a clear solution; at the same time, a mixture of 16.820g of hexamethylene diisocyanate and 30g of anhydrous chloroform was slowly added dropwise to the flask, and reacted at 50°C for 7h. Continue to drop 31.980 g of Priamine 1074 and 40 g of anhydrous chloroform mixture, and react at 25° C. for 6 h to obtain a bio-based polyurethane solution with an amino terminal. Secondly, a mixture of 5.983g UPy-NCO and 120g anhydrous chloroform was slowly added dropwise, and kept for 6 hours at 25°C to obtain a self-healing bio-based polyurethane solution. Finally, slowly drop a mixture of 3.879g of isocyanoethyl methacrylate, 0.093g of hydroquinone, and 25g of anhydrous chloroform, keep the reaction at 30°C for 6 hours, and rotate to evaporate the excess chloroform , to obtain a bio-based photosensitive poly...

Embodiment 3

[0036] (1) Synthesis of bio-based photosensitive polyurethane resin: First, add 50.000g PEG-1000, 0.401g dilauric acid di Butyltin and 60g of anhydrous chloroform were stirred to form a clear solution; at the same time, a mixture of 16.820g of hexamethylene diisocyanate and 30g of anhydrous chloroform was slowly added dropwise to the flask, and reacted at 50°C for 7h. Continue to drop 31.980 g of Priamine 1074 and 40 g of anhydrous chloroform mixture, and react at 25° C. for 6 h to obtain a bio-based polyurethane solution with an amino terminal. Secondly, a mixture of 7.179g of UPy-NCO and 140g of anhydrous chloroform was slowly added dropwise, and kept for 6 hours at 25°C to obtain a self-healing bio-based polyurethane solution. Finally, slowly drop a mixture of 3.103g isocyanoethyl methacrylate, 0.093g hydroquinone, and 20g anhydrous chloroform, keep the reaction at 30°C for 6 hours, and rotate to evaporate the excess chloroform solution , to obtain a bio-based photosensiti...

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Abstract

The invention discloses a bio-based photocuring polyurethane self-repair coating. Firstly, the chain extender polyol, diisocyanate and bio-based dipolyamine are used as monomers for polycondensation reaction to obtain amino-terminated prepolymers; secondly, isocyanates containing carbon-carbon double bonds and self-healing units are grafted on the prepolymers , a bio-based photosensitive polyurethane resin was synthesized; finally a bio-based photocurable polyurethane self-healing coating was prepared with bio-based photosensitive polyurethane resin, photoinitiator, reactive diluent and solvent. In the present invention, the bio-based dimeramine with low price and renewable resources can be used to improve the hydrophobicity and flexibility of the coating; the carbon-carbon double bond and the isocyanate of the self-repairing unit can be used for photocuring and self-repairing of the coating performance.

Description

technical field [0001] The invention relates to the field of ultraviolet light-curable polymer materials, in particular to a bio-based photosensitive polyurethane resin prepared from bio-based dimeramine and a self-repairing monomer as main raw materials and a self-repairing coating prepared therefrom. Background technique [0002] Self-healing coating refers to a functional coating that has self-healing ability after the coating is damaged, or has self-healing ability under certain external environment. As a novel intelligent structural functional material, self-healing polymer materials can avoid further damage to materials by realizing self-healing of microcracks. Self-healing principles mainly include two categories: extrinsic type (microcapsule repair type, hollow fiber type) and intrinsic type (reversible covalent bond type, reversible non-covalent bond type). Both microcapsule and hollow fiber repair technologies encapsulate the repair agent or cross-linking agent in...

Claims

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Application Information

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IPC IPC(8): C08G18/73C08G18/81C08G18/71C08G18/66C08G18/48C08G18/32C09D175/14
CPCC08G18/73C08G18/3234C08G18/4833C08G18/6685C08G18/714C08G18/8116C09D175/14
Inventor 刘敬成王宽林立成高菲刘仁刘晓亚
Owner JIANGNAN UNIV
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