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Containing polyether polyol/nano-sio 2 Polyurethane Elastomers of Hybrid Materials

A polyurethane elastomer and polyether polyol technology, applied in the field of polyurethane materials, can solve problems such as weak bonding, poor compatibility between inorganic nanomaterials and polymer interfaces, and difficulty in improving the performance of polyurethane composite materials, so as to reduce agglomeration , Improvement of modified performance and improvement of elongation at break

Inactive Publication Date: 2017-12-26
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the interfacial compatibility of inorganic nanomaterials with polymers is not good, resulting in nano-SiO 2 Weak binding to polyurethane
The above two factors will lead to nano-SiO 2 / The performance of polyurethane composites is difficult to improve

Method used

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  • Containing polyether polyol/nano-sio <sub>2</sub> Polyurethane Elastomers of Hybrid Materials
  • Containing polyether polyol/nano-sio <sub>2</sub> Polyurethane Elastomers of Hybrid Materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1: Preparation of Polyurethane Elastomer Containing Polyether Polyol / Nano Silica Hybrid Material

[0050] (1) Preparation of polyoxypropylene ether triol N330 / nano silica hybrid material

[0051] a. Under the protection of nitrogen, add 10g of γ-aminopropyltriethoxysilane dropwise into the mixture of 7.9g of toluene diisocyanate and 50g of anhydrous toluene with a dropping funnel, and mechanically stir at 20°C for 0.5 hours , add 135g polyoxypropylene ether trihydric alcohol N330, 0.5g stannous octoate, stir and react at 70°C for 6h, then rotary evaporate at 70°C, remove toluene, and obtain polymer A.

[0052] b. Disperse 10 g of nano-silicon dioxide in 100 g of toluene and sonicate for 0.5 h to obtain a nano-silicon dioxide dispersion.

[0053] c. 15g of polymer A, 11g of nano-silica dispersion, 1g of distilled water, and 100g of toluene were stirred and reacted at 60°C for 6 hours, and then rotary evaporated at 70°C to remove toluene and water to obtain polyo...

Embodiment 2

[0056] Embodiment 2: Preparation of polyurethane elastomer containing polyether polyol / nanometer silicon dioxide hybrid material

[0057] (1) Preparation of polyoxypropylene ether triol JH-3030 / nano silica hybrid material

[0058] a. Under the protection of nitrogen, add 10g of γ-aminopropyltrimethoxysilane dropwise into a mixture of 14g of diphenylmethane-4,4'-diisocyanate and 50g of anhydrous toluene with a dropping funnel, at 40°C After stirring mechanically for 1 hour, add 167g polyoxypropylene ether trihydric alcohol JH-3030 and 0.05g dibutyltin dilaurate, stir and react at 75°C for 4h, and then rotary evaporate at 70°C to remove toluene to obtain the polymer Object A.

[0059] b. Disperse 10 g of nano-silicon dioxide in 100 g of toluene and sonicate for 1 hour to obtain a nano-silicon dioxide dispersion.

[0060] c. 56g Polymer A, 30g nano-silica dispersion, 4g distilled water, 200 mass parts toluene, stirred and reacted at 70°C for 6 hours, then rotary evaporated at 7...

Embodiment 3

[0063] Embodiment 3: Preparation of polyurethane elastomer containing polyether polyol / nanometer silicon dioxide hybrid material

[0064] (1) Preparation of polyoxypropylene ether triol MN-3050 / nano silica hybrid material

[0065] a. Under the protection of nitrogen, add 10g N-β (aminoethyl)-γ-aminopropyltrimethoxysilane dropwise to the mixed solution of 10g isophorone diisocyanate and 50g anhydrous toluene with a dropping funnel , after mechanically stirring at 30°C for 2 hours, add 135g of polyoxypropylene ether triol MN-3050, 0.3g of lead octoate, stir and react at 80°C for 4h, and then rotary evaporate at 70°C to remove toluene to obtain a polymer a.

[0066] b. Disperse 10 g of nano-silicon dioxide in 100 g of toluene and sonicate for 2 hours to obtain a nano-silicon dioxide dispersion.

[0067] c. 31g of polymer A, 22g of nano-silica dispersion, 2g of distilled water, and 150g of toluene were stirred and reacted at 60°C for 8 hours, and then rotary evaporated at 70°C t...

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Abstract

The invention belongs to the technical field of polyurethane materials and discloses a polyurethane elastomer containing a polyether polyol / nano-SiO2 hybrid material as well as a preparation method and application of the polyurethane elastomer. The elastomer comprises the following components in parts by weight: 25-80 parts of polyether polyol / nano-SiO2 hybrid materials, 9-64 parts of diisocyanate, 100 parts of polyether polyol, 0-5 parts of chain extenders, 0.1-2 parts of defoaming agents and 3-18 parts of curing agents. The polyurethane elastomer containing the polyether polyol / nano-SiO2 hybrid material can be used for solving the problem that the nanoparticles are bad to aggregate and disperse and improving the consistency of nano-SiO2 and a polyurethane matrix, so that the thermal properties and the mechanical properties such as the maximum thermal weight loss temperature, the tensile strength, the hardness and the elongation at break of the prepared elastomer are remarkably improved and the polyurethane elastomer containing the polyether polyol / nano-SiO2 hybrid material can be widely applied to the fields of mines, metallurgy, mechanical parts, vehicles and shoe materials.

Description

technical field [0001] The invention belongs to the technical field of polyurethane materials, in particular to a polyether-containing polyol / nanometer SiO 2 Polyurethane elastomer of hybrid material and its preparation method and application. Background technique [0002] nano-SiO 2 It is usually called ultra-fine silica in industry, and it is often compounded with polymers to prepare nano-SiO 2 / polymer composites. The unique surface effect, quantum size effect and volume effect of nanoparticles make nano-SiO 2 / polymer composites exhibit excellent properties that traditional polymers do not have. Polyurethane elastomer has good wear resistance, mechanical properties and shock absorption, etc., and is widely used in mining, metallurgy, mold lining, mechanical parts, etc. However, its poor heat resistance, flammability, and poor water resistance limit its application. nano-SiO 2 / Polyurethane composites can synthesize nano-SiO 2 And the excellent characteristics o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C08G18/75C08G18/73C08K9/10C08K3/36
CPCC08G18/10C08G18/4812C08G18/6607C08G18/6618C08K3/36C08K9/10C08K2201/011C08G18/3868C08G18/3206C08G18/3814
Inventor 刘伟区夏侯国论
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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