Phyllosilicate modified organic silicon grafted polyether polyurethane elastomer and preparation method and application thereof

A polyurethane elastomer and layered silicate technology, which is applied in the field of polymer materials and can solve the problems of silicone-modified polyurethane tensile strength and toughness reduction

Inactive Publication Date: 2014-12-24
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, compared with pure polyurethane materials, the tensile st

Method used

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  • Phyllosilicate modified organic silicon grafted polyether polyurethane elastomer and preparation method and application thereof
  • Phyllosilicate modified organic silicon grafted polyether polyurethane elastomer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] (1) Preparation of polyether polyurethane prepolymer: Add 17.4g toluene diisocyanate (TDI) and 100g polyoxypropylene ether glycol N220 into a 500mL three-necked flask equipped with a mechanical electric stirrer, thermometer and nitrogen conduit , Stirring and reacting at 75°C for 5 hours to prepare polyether polyurethane prepolymer.

[0064] (2) Preparation of silicone grafted polyether polyurethane prepolymer: In a 500mL three-necked flask equipped with a mechanical electric stirrer, thermometer and nitrogen conduit, add 100g polyoxypropylene ether triol N330 and 17.4g toluene diol. Isocyanate (TDI), after stirring and reacting at 80°C for 4 hours, add 6g of single-ended hydroxyl polydimethylsiloxane (silicone hydroxyl terminated, average molecular weight 15000), 0.1g of organometallic catalyst dibutyltin dilaurate , The temperature is raised to 90 DEG C, and the graft modification reaction is carried out for 4 hours to prepare the silicone grafted polyether polyurethane ...

Embodiment 2

[0068] (1) Preparation of polyether polyurethane prepolymer: In a 500 mL three-necked flask equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 17 g of hexamethylene diisocyanate (HDI) and 100 g of polyoxypropylene ether binary Alcohol N220, stirred and reacted at 85°C for 6 hours to prepare a polyether polyurethane prepolymer.

[0069] (2) Preparation of silicone grafted polyether polyurethane prepolymer: In a 500mL three-necked flask equipped with a mechanical electric stirrer, a thermometer and a nitrogen conduit, add 100g polyoxypropylene ether triol N330, 16.8g HDI, After stirring and reacting at 85°C for 4 hours, add 30g of single-ended hydroxyl polydimethylsiloxane (silanic hydroxyl terminated, average molecular weight is 50000), 0.1g of dibutyltin dilaurate, and heat to 95°C for incorporation The graft modification reaction was conducted for 5 hours to prepare the silicone grafted polyether polyurethane prepolymer.

[0070] (3) Preparati...

Embodiment 3

[0073] (1) Preparation of polyether polyurethane prepolymer: In a 500 mL three-necked flask equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 150 g of isophorone diisocyanate (IPDI) and 100 g of polypropylene glycol PPG300. The reaction was stirred at ℃ for 10 hours to prepare polyether polyurethane prepolymer.

[0074] (2) Preparation of silicone grafted polyether polyurethane prepolymer: In a 500 mL three-necked flask equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 100 g of polyoxypropylene ether tetraol (average molecular weight 5000), 18g IPDI, after stirring and reacting at 75℃ for 7 hours, add 15g single-end hydroxy polydimethylsiloxane (silicone hydroxyl terminated, average molecular weight is 30,000), 0.4g dibutyltin dilaurate, and heat to 95℃ , The graft modification reaction is carried out for 4 hours to obtain the silicone grafted polyether polyurethane prepolymer.

[0075] (3) Preparation of ...

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Abstract

The invention discloses a phyllosilicate modified organic silicon grafted polyether polyurethane elastomer and a preparation method and application thereof. The phyllosilicate modified organic silicon grafted polyether polyurethane elastomer comprises the following components in parts by mass: 100 parts of polyether polyurethane prepolymers, 5-100 parts of organic silicon grafted polyether polyurethane prepolymers, 1-40 parts of polyether polyol, 0.5-15 parts of organic modified phyllosilicate, 0-5 parts of chain extenders, 0.1-2 parts of defoaming agents and 2-15 parts of curing agents. The phyllosilicate modified organic silicon grafted polyether polyurethane elastomer disclosed by the invention has multiple properties, namely excellent surface property, heat resistance, mechanical property, abrasion resistance, oil resistance, solvent resistance, radiation resistance, electrical insulation and the like, through the integrated complementation of excellent properties of the phyllosilicate, organic silicon and polyurethane. The preparation method of the phyllosilicate modified organic silicon grafted polyether polyurethane elastomer, which is disclosed by the invention, has the advantages of simpleness, easiness for reaction condition control, low-cost raw materials, low energy consumption, no environment pollution and suitability for industrialized production.

Description

Technical field [0001] The invention belongs to the field of polymer materials, and relates to a preparation method of a polyurethane elastomer, in particular to a layered silicate modified organosilicon grafted polyether polyurethane elastomer, and a preparation method and application. Background technique [0002] Polyurethane elastomer contains repeated urethane groups (-NHCOO-) in the main chain, which has good wear resistance, high strength, elasticity, oil resistance, solvent resistance, radiation resistance, electrical insulation, and a wide range of Used in mining, metallurgy, transportation, mold lining, machinery parts, etc. However, because the material is not resistant to high temperature, large internal heat generation, flammability, poor water resistance and poor dielectric properties, its application is greatly restricted. [0003] The organosilicon structure contains Si-O bonds, the bond energy of which is as high as 422.2kJ / mol. The molecular volume of siloxane is...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/61C08G18/48C08G18/10C08G18/12C08K9/04C08K3/34
CPCC08G18/3206C08G18/3212C08G18/324C08G18/3243C08G18/4009C08G18/4812C08G18/4825C08G18/4829C08G18/4854C08G18/61C08K3/34C08K3/346C08K9/04
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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