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Montmorillonite-modified organic silicon graft polyester type polyurethane elastomer, and preparation method and application thereof

A technology of polyurethane elastomer and grafted polyester is applied in the field of montmorillonite modified organosilicon grafted polyester polyurethane elastomer and its preparation, which can solve the problems of reducing the mechanical properties of materials and the like

Inactive Publication Date: 2014-12-17
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

While silicones improve many properties of polyurethane, they often degrade the material's mechanical properties

Method used

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  • Montmorillonite-modified organic silicon graft polyester type polyurethane elastomer, and preparation method and application thereof
  • Montmorillonite-modified organic silicon graft polyester type polyurethane elastomer, and preparation method and application thereof
  • Montmorillonite-modified organic silicon graft polyester type polyurethane elastomer, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] (1) Preparation of polyester polyurethane prepolymer: In a 500mL three-necked bottle equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 17.4g of toluene diisocyanate (TDI) and 100g of toluene diisocyanate (TDI) with an average molecular weight of 2000 and a hydroxyl value of 54-58 polyethylene adipate diol, stirred and reacted at 75°C for 5 hours to obtain a polyester polyurethane prepolymer;

[0094](2) Preparation of silicone-grafted polyester polyurethane prepolymer: In a 500mL three-necked bottle equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 100g of polystyrene with an average molecular weight of 3000 and a hydroxyl value of 56-60. Ethylene glycol trimethylolpropane adipate polyol and 18g toluene diisocyanate (TDI) were stirred and reacted at 80°C for 4h, and then 6g of single-terminal hydroxyl polydimethylsiloxane (silanol-terminated, average The molecular weight is 15000), 0.1g organome...

Embodiment 2

[0098] (1) Preparation of polyester 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 hexamethylene diisocyanate (HDI) with an average molecular weight of 2000, hydroxyl Polycaprolactone diol with a value of 55-58 was stirred and reacted at 85°C for 6 hours to obtain a polyester polyurethane prepolymer;

[0099] (2) Preparation of silicone-grafted polyester polyurethane prepolymer: In a 500mL three-necked bottle equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 100g of polystyrene with an average molecular weight of 1500 and a hydroxyl value of 110-116. Caprolactone trihydric alcohol and 34g hexamethylene diisocyanate (HDI), after stirring and reacting at 85°C for 4h, add 30g single-end hydroxyl polydimethylsiloxane (silanol-terminated, average molecular weight is 50000), 0.1g of dibutyltin dilau...

Embodiment 3

[0103] (1) Preparation of polyester polyurethane prepolymer: In a 500mL three-necked bottle equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 67g of isophorone diisocyanate (IPDI) and 100g of an average molecular weight of 500, hydroxyl The polycarbonate diol with a value of 220-230 was stirred and reacted at 75°C for 10 hours to obtain a polyester polyurethane prepolymer;

[0104] (2) Preparation of silicone-grafted polyester polyurethane prepolymer: In a 500mL three-necked bottle equipped with a mechanical electric stirrer, a thermometer, and a nitrogen conduit, add 100g of polystyrene with an average molecular weight of 2000 and a hydroxyl value of 110-114. Carbonate polyol, 45g of isophorone diisocyanate (IPDI), after stirring and reacting at 75°C for 7h, add 15g of single-end hydroxyl polydimethylsiloxane (silanol-terminated, average molecular weight is 30000), 0.4 g dibutyltin dilaurate, heat up to 95°C, carry out graft modification ...

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Abstract

The invention belongs to the field of high polymer materials, and particularly relates to a montmorillonite-modified organic silicon graft polyester type polyurethane elastomer, and a preparation method and application thereof. The montmorillonite-modified organic silicon graft polyester type polyurethane elastomer comprises the following components in parts by mass: 100 parts of polyester type polyurethane prepolymer, 5-100 parts of organic silicon graft polyester type polyurethane prepolymer, 1-40 parts of polyester polyol, 0.5-15 parts of organic montmorillonite, 0-5 parts of chain extender, 0.1-2 parts of defoaming agent and 2-15 parts of curing agent. By using the montmorillonite and organic silicon for modifying the polyurethane, the advantages of the montmorillonite and organic silicon can be utilized to overcome the defects of the properties of the polyurethane, thereby adding excellent surface property, excellent heat resistance and favorable mechanical properties on the premise of keeping the original advantages of polyurethane.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a montmorillonite modified organosilicon grafted polyester polyurethane elastomer and a preparation method and application thereof. Background technique [0002] The modulus of polyurethane elastomers is generally between that of rubber and plastics. It has excellent mechanical properties, good biocompatibility, wear resistance and fatigue resistance, and is adjustable in performance and easy to process, so it is widely used in the market. use. However, due to its disadvantages such as low temperature resistance and poor surface properties, its application in some fields is limited. In order to overcome the above shortcomings of polyurethane, silicones with low surface energy, high temperature resistance and good hydrophobicity are commonly used to modify polyurethane. Modification methods include physical modification and chemical modification. Chemical modificatio...

Claims

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Application Information

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IPC IPC(8): C08G18/64C08G18/42C08G18/32C08K3/34C08G18/83
CPCC08G18/12C08G18/4009C08G18/4202C08G18/4238C08G18/4241C08G18/425C08G18/4277C08G18/44C08G18/61C08G18/6511C08G18/6529C08K3/346C08K9/04C08L75/04
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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