Preparation method of carborane polyurethane resin

A technology of polyurethane resin and carborane, which is applied in the field of preparation of carborane polyurethane resin, can solve the problems of low softening temperature and thermal decomposition temperature, limited application range, and low retention rate of mechanical properties, and achieve good mechanical properties and thermal stability. Stability, low cost, and easy curing

Inactive Publication Date: 2014-10-08
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the softening temperature and thermal decomposition temperature of traditional polyurethane elastomers are relatively low, especially in the environment where the t

Method used

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  • Preparation method of carborane polyurethane resin
  • Preparation method of carborane polyurethane resin
  • Preparation method of carborane polyurethane resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 60.00g polyester polyol (polybutylene adipate, between 57% of hydroxyl value, number-average molecular weight is 2000, the following examples are all this material without explanation) join in the 500ml there-necked bottle, in- 0.1MPa, under the condition of 105 ℃, carry out dehydration treatment for 1.5 hours, add 4,4-diphenylmethane diisocyanate (6.00g), carborane polyarylate (0.66g), dibutyltin dilaurate ( 0.20 g) and ethyl acetate (15 ml), stirred and reacted at 65° C. for 1 hour. After adding 135ml of acetone to reduce the viscosity and react for 2 hours, a light yellow low-viscosity hydroxyl-terminated carborane polyurethane prepolymer was obtained. Dissolve 9.28g of 4,4-diphenylmethane diisocyanate in 10ml of ethyl acetate, add it to a 250ml four-necked flask, and dissolve 1.62g of p-phenol-1,2-carborane at 65°C Add the mixed solution of 1.34g trimethylolpropane and ethyl acetate dropwise into the flask, wherein the amount of ethyl acetate is 5 times the mass of...

Embodiment 2

[0025]60.00g polyester polyol (polybutylene adipate, should the hydroxyl value be between 57% and 2000, the number average molecular weight is 2000, and the following examples are all this material if there is no description) into 500ml three ports In the bottle, dehydration treatment was carried out at -0.1MPa and 105°C for 1 hour, and 4,4-diphenylmethane diisocyanate (6.00g), carborane polyarylate (0.66g), di A mixed solution of dibutyltin laurate (0.20 g) and ethyl acetate (15 ml) was stirred and reacted at 65° C. for 1 hour. After adding 135ml of acetone to reduce the viscosity and react for 2 hours, a light yellow low-viscosity hydroxyl-terminated carborane polyurethane prepolymer was obtained. Dissolve 9.28g of 4,4-diphenylmethane diisocyanate in 10ml of ethyl acetate, add it to a 250ml four-necked flask, and dissolve 1.62g of p-phenol-1,7-carborane at 55°C Add the mixed solution of 1.34g trimethylolpropane and ethyl acetate dropwise into the flask, wherein the amount o...

Embodiment 3

[0027] 60.00g polyester polyol (polybutylene adipate, should the hydroxyl value be between 57% and 2000, the number average molecular weight is 2000, and the following examples are all this material if there is no description) into 500ml three ports In the bottle, dehydration treatment was carried out at -0.1MPa and 105°C for 2 hours, and 4,4-diphenylmethane diisocyanate (6.00g), carborane polyarylate (0.66g), di A mixed solution of dibutyltin laurate (0.20g) and ethyl acetate (15ml) was stirred and reacted at 85°C for 1 hour. After adding 135ml of acetone to reduce the viscosity and react for 2 hours, a light yellow low-viscosity hydroxyl-terminated carborane polyurethane prepolymer was obtained. Dissolve 9.28g of 4,4-diphenylmethane diisocyanate in 10ml of ethyl acetate, add it to a 250ml four-necked flask, and dissolve 1.62g of p-phenol-1,12-carborane at 65°C Add the mixed solution of 1.34g trimethylolpropane and ethyl acetate dropwise into the flask, wherein the amount of...

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Abstract

The invention provides a preparation method of carborane polyurethane resin. According to the method, carborane polyarylester, polyester polyol, isocyanate, carborane bisphenol and small-molecular polyols are used as raw materials, organotin is used as a catalyst, and the carborane polyurethane resin can be prepared by adopting a double-prepolymer method. The preparation method has the advantages of low reaction system viscosity, uniform mixing, easy temperature control, good and stable product quality and high yield. The polyurethane resin has excellent high temperature resistance property and mechanical performance, and can be used for researching a high-temperature-resistant adhesive and a composite material.

Description

technical field [0001] The present invention relates to a kind of preparation method of carborane polyurethane resin Background technique [0002] Polyurethane is a general term for macromolecular compounds containing repeated carbamate groups on the main chain. It is formed by addition polymerization of organic diisocyanate or polyisocyanate and dihydroxy or polyhydroxy compound. Polyurethane has excellent characteristics such as impact resistance, good flexibility, high peel strength, very good ultra-low temperature resistance, oil resistance and abrasion resistance. However, the softening temperature and thermal decomposition temperature of traditional polyurethane elastomers are relatively low, especially in the environment where the temperature is relatively high, the retention rate of mechanical properties is low, which greatly limits the application range and cannot satisfy all Application requirements [0003] Carborane is a polyhedral compound composed of three ...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/44C08G18/46C08G18/32C08G18/12
CPCC08G18/12C08G18/3206C08G18/3897C08G18/4202C08G18/46C08G18/664C08G18/6644
Inventor 齐士成骆雨萌吕亚非张孝阿李宁
Owner BEIJING UNIV OF CHEM TECH
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