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Organosilicon/phyllosilicate composite modified polyether polyurethane elastomer, preparation method and application

A polyether-type polyurethane and layered silicate technology, applied in the field of polymer materials, can solve the problems of poor heat resistance of polyurethane elastomers, limited application scope, poor surface properties, etc., and achieves easy control of process conditions and improvement. The effect of surface properties, preparation method is simple

Active Publication Date: 2016-08-24
国科广化(南雄)新材料研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyurethane elastomers prepared with traditional raw materials and methods have poor heat resistance, poor surface properties, and are flammable, thus limiting their application range.

Method used

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  • Organosilicon/phyllosilicate composite modified polyether polyurethane elastomer, preparation method and application
  • Organosilicon/phyllosilicate composite modified polyether polyurethane elastomer, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Preparation of polyether polyurethane prepolymer: In a 500mL three-neck flask equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 17.4g of toluene diisocyanate (TDI) and 100g of polyoxypropylene ether glycol N220 , stirred and reacted at 75°C for 5 hours to obtain a polyether polyurethane prepolymer.

[0053] (2) Preparation of isocyanate-terminated polydimethylsiloxane: In a 1000mL three-neck flask equipped with a mechanical electric stirrer, a thermometer, and a nitrogen gas conduit, add 12g of toluene diisocyanate (TDI), 500g of double-terminated hydroxyl poly(dimethicone) Methylsiloxane (silanol-terminated, average molecular weight 15,000) and 0.5 g of dibutyltin dilaurate were stirred and reacted for 6 hours at 90°C under nitrogen protection to prepare isocyanate-terminated polydimethylsiloxane alkyl.

[0054] (3) Preparation of organic montmorillonite: In a 500mL three-neck flask equipped with a mechanical electric stirrer ...

Embodiment 2

[0057] (1) Preparation of polyether polyurethane prepolymer: In a 500mL three-necked bottle equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 17g of hexamethylene diisocyanate (HDI) and 100g of polyoxypropylene ether binary Alcohol N220, stirred and reacted at 85°C for 6 hours to obtain a polyether polyurethane prepolymer.

[0058] (2) Preparation of isocyanate-terminated polydimethylsiloxane: In a 1000mL three-neck flask equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 5g of hexamethylene diisocyanate (HDI), 750g of double-ended Hydroxypolydimethylsiloxane (silanol-terminated, average molecular weight 50,000) and 0.7 g of dibutyltin dilaurate were stirred and reacted at 95°C for 5 hours under nitrogen protection to prepare isocyanate-terminated polydimethylsiloxane base siloxane.

[0059] (3) Preparation of organic rectorite: In a 500mL three-necked bottle equipped with a mechanical electric stirrer...

Embodiment 3

[0062] (1) Preparation of polyether polyurethane prepolymer: In a 500mL three-necked bottle equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 150g isophorone diisocyanate (IPDI) and 100g polypropylene glycol PPG300, at 75 Stirring and reacting at ℃ for 10 hours to obtain a polyether type polyurethane prepolymer.

[0063] (2) Preparation of isocyanate-terminated polydimethylsiloxane: In a 500-mL three-neck flask equipped with a mechanical electric stirrer, a thermometer, and a nitrogen gas conduit, add 9 g of isophorone diisocyanate (IPDI), 200 g of double-ended Hydroxypolydimethylsiloxane (silanol-terminated, average molecular weight 10,000) and 0.8 g of dibutyltin dilaurate were stirred and reacted for 7 hours at 85°C under nitrogen protection to prepare isocyanate-terminated polydimethylsiloxane base siloxane.

[0064] (3) Preparation of organic kaolin: In a 500mL three-neck flask equipped with a mechanical electric stirrer and a thermo...

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Abstract

The invention discloses an organosilicone / laminated silicate compound modified polyether polyurethane elastomer as well as a preparation method and an application thereof. The elastomer is prepared from the following components in parts by mass: 100 parts of a polyether polyurethane prepolymer, 0.5-100 parts of isocyanate group-terminated polydimethylsiloxane, 1-40 parts of polyether polyol, 0.5-15 parts of organically modified laminated silicate, 0.1-1.5 parts of a defoamer, 0-5 parts of a chain extender and 2-15 parts of a curing agent. By adopting the organosilicone / laminated silicate compound modified polyether polyurethane elastomer, excellent performances of organosilicone and laminated silicate can be integrated to supplement the defects on the performance of polyurethane, so that various performances such as surface properties, mechanical properties and heat resistance of the polyurethane elastomer are improved. The polyurethane elastomer disclosed by the invention is simple in preparation method, wide in source of raw materials, low in energy consumption, free from environmental pollution and suitable for industrial production, and the process conditions are easy to control.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a preparation method of a composite material, in particular to an organosilicon / phyllosilicate composite modified polyether polyurethane elastomer, a preparation method and an application thereof. Background technique [0002] Silicone is a high molecular polymer containing silicon. The main chain is a stable skeleton (Si-O-Si) composed of silicon atoms and oxygen atoms alternately. The side chains are connected with organic groups and have good heat resistance. , weather resistance, corrosion resistance, hydrophobicity, gas permeability, low surface energy and biocompatibility, it has a wide range of applications in electronics, printing, cables, medicine and other fields. [0003] Layered silicate (PLS) is a polymer of layered silicate minerals, which has a natural nanosheet structure and can form layered silicate / polymer nanocomposites with polymers. The composite material reali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/77C08G18/76C08G18/73C08G18/75C08G18/66C08G18/48C08G18/61C08G18/32C08G18/10C08K9/04C08K3/34
CPCC08G18/10C08G18/3206C08G18/3814C08G18/4009C08G18/4812C08G18/4825C08G18/4829C08G18/61C08G18/667C08G18/6674C08K3/346C08K9/04C08G18/32
Inventor 刘伟区夏侯国论
Owner 国科广化(南雄)新材料研究院有限公司
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