Polyurethane elastomer composition of paraffin wax aggregate thickened by solid nano particles and preparation method thereof

A technology of polyurethane elastomer and polyurethane prepolymer, which is applied in the field of polyurethane elastomer composition, can solve the problems of paraffin wax flowing and melting at high temperature, and achieve the effects of reducing migration and precipitation, good compatibility, and expanding the scope of application

Active Publication Date: 2019-03-22
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to further solve the problem of paraffin wax flowing and melting at high temperature, and utilize paraffin wax and polyurethane elastomer to synthesize new materials

Method used

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  • Polyurethane elastomer composition of paraffin wax aggregate thickened by solid nano particles and preparation method thereof
  • Polyurethane elastomer composition of paraffin wax aggregate thickened by solid nano particles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Heat 76.5g of 50# paraffin to 100°C and stir for 10 minutes to dissolve it completely. Add 13.5g of nano-silicon nitride into the paraffin wax system under high-speed stirring conditions (500 rpm), continue to stir at 100°C for 20min, then raise the temperature to 180°C, refine at high temperature for 1.5h, stop heating, and let it stand to cool to At room temperature, a paraffin aggregate thickened with nano-silicon nitride particles is obtained.

[0034] Weigh 16g of hydroxyl-terminated polybutadiene HTPB and 8g of plasticizer dioctyl sebacate (DOS), stir evenly at 78°C, add 1.5g of toluene diisocyanate (TDI), stir evenly and react for 10min, Add 5.5g of nano-silicon nitride thickened paraffin aggregates (solid nano-particle thickener content 15%, paraffin: lubricating oil base oil is 1:0) that has been preheated to 60 ℃ therein, continue stirring reaction 20min , under the condition of vacuum degree of 400Pa, defoam under reduced pressure for 6min; then raise the te...

Embodiment 2

[0036] Heat 38.5g of 50# paraffin and 38.5g of base oil 150BSM to 80°C, add 4.5g of structure stabilizer diphenylsilanediol to it, stir for 10min to dissolve completely. Add 15.0g of nano-silicon nitride into the paraffin wax system under high-speed stirring conditions (500 rpm), stir evenly and heat up to 120°C, add 3.5g of expanded graphite, stir for 40min, then heat up to 220°C, and refine at high temperature After 2.5 hours, the heating was stopped, and the mixture was left to cool down to room temperature to obtain paraffin aggregates thickened with nano-silicon nitride particles.

[0037] Weigh 16.5g of hydroxyl-terminated polybutadiene HTPB and 9g of plasticizer dioctyl sebacate (DOS), stir evenly at 85°C, add 2.0g of toluene diisocyanate (TDI), and then add 1 drop of diisocyanate Dibutyltin laurate (DBTL) stirs and reacts 10min, adds the paraffin aggregate (18.5% of solid nano particle thickener content of thickening agent content 18.5%, paraffin:lubricating oil The b...

Embodiment 3

[0039] Heat 87.0g of 50# paraffin to 100°C and stir for 10 minutes to dissolve it completely. Add 13.0g of nano-silica to the paraffin wax system under high-speed stirring conditions (600 rpm), stir evenly and raise the temperature to 120°C and stir for 30min, then raise the temperature to 200°C, refine at high temperature for 1.5h, stop heating, and stand Cool to room temperature to obtain paraffin aggregates thickened by nano-silica particles.

[0040] Weigh 17.0g hydroxyl-terminated polybutadiene HTPB and 8.5g plasticizer dioctyl sebacate (DOS), stir evenly at 80°C, add 1.8g toluene diisocyanate (TDI) to it, stir evenly and react 10min, add the paraffin aggregate (13% of solid nano particle thickener content, paraffin:lubricating oil base oil is 1:0) of 6g nano silicon dioxide thickening that has been preheated to 80 ℃ therein, continue stirring reaction For 20 minutes, under the condition of vacuum degree of 200Pa, decompress and defoam for 4 minutes; then raise the tempe...

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Abstract

The invention discloses a polyurethane elastomer composition of solid nanoparticle-thickened paraffin aggregate and a preparation method of the polyurethane elastomer composition. The polyurethane elastomer composition comprises 4.9%-89.99% of a polyurethane prepolymer, 0.01%-40% of a curing agent and 10%-80% of solid nanoparticle-thickened paraffin aggregate. The polyurethane prepolymer, the curing agent and the solid nanoparticle-thickened paraffin aggregate are mixed evenly and are cast, cured and molded to obtain the polyurethane elastomer composition after vacuum defoamation. The polyurethane elastomer composition has excellent properties of the polyurethane elastomer. The paraffin aggregate which is a fixed semi-fluid between a paraffin melting point and 280 DEG C is added, so that the polyurethane elastomer composition becomes a novel phase-change material which is capable of effectively preventing paraffin from flowing and significantly reducing paraffin removal and separation.

Description

technical field [0001] The invention relates to a polyurethane elastomer composition containing paraffin wax aggregates, more specifically, the invention relates to a polyurethane elastomer composition of paraffin wax aggregates thickened by solid nano particles and a preparation method thereof. Background technique [0002] Polyurethane elastomer is a typical multi-block copolymer, which is composed of soft and hard segments. The soft segment provides elasticity, and the hard segment plays the role of reinforcing filling and crosslinking. The multi-phase polymer has good mechanical strength, high hardness and High elongation, excellent wear resistance, good oil resistance and resistance to various solvents, therefore, polyurethane elastomers have been widely used in many fields of the national economy. [0003] As a phase change material with good performance, paraffin wax has become a hot spot in energy storage research at home and abroad because of its high energy storage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/14C08L91/06C08L75/08C08L75/06C08K3/34C08K3/36C08K5/5419C08K3/28C08K7/24
CPCC08K2201/011C08L75/06C08L75/08C08L75/14C08L2205/03C08L91/06C08K3/34C08K3/36C08K5/5419C08K7/24C08K2003/282
Inventor 赵天波韩雪罗观郑保辉
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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