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A kind of heat-resistant polyurethane elastomer and preparation method thereof

A polyurethane elastomer, heat-resistant technology, applied in the field of organic polymer resin synthesis, can solve problems such as poor flame retardancy and antistatic properties, and achieve good abrasion resistance and low temperature resistance, clear steps, and excellent oil resistance. Effect

Active Publication Date: 2019-02-01
HANGZHOU GANJIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a heat-resistant polyurethane elastomer, which solves the problems of poor flame retardancy and antistatic properties of existing polyurethane elastomers

Method used

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  • A kind of heat-resistant polyurethane elastomer and preparation method thereof
  • A kind of heat-resistant polyurethane elastomer and preparation method thereof
  • A kind of heat-resistant polyurethane elastomer and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0028] The preparation method of the above-mentioned heat-resistant polyurethane elastomer, the specific operation steps are as follows:

[0029] Step 1, weigh 13.60%-18.09% 1,4-cyclohexane diisocyanate, 57.01%-61.51% polycaprolactone diol, 5.30%-5.50% 1,4-butanediol, 0.06%~0.10% dibutyltin dilaurate, 1.98%~2.23% hexadecyltrimethylammonium bromide, 1.03%~1.30% conductive carbon black, 6.20%~6.48% nano magnesium hydroxide, 9.63%~9.85 % dimethyl methylphosphonate, the sum of the mass percentages of each component is 100%;

[0030] Step 2: Add polycaprolactone diol to a three-necked round-bottom flask equipped with a stirrer, temperature sensor, and vacuum interface, heat to 100-110°C, vacuum dehydrate for 2.5 hours, and then lower the temperature to 50-60°C Then stop vacuuming;

[0031] Step 3, add cetyltrimethylammonium bromide and conductive carbon black to the polycaprolactone diol pretreated in step 2, stir at a speed of 2000r / min for 10min, and adjust the temperature to 2...

Embodiment 1

[0037] Step 1, weigh 13.60% 1,4-cyclohexane diisocyanate, 61.51% polycaprolactone diol, 5.50% 1,4-butanediol, 0.08% dibutyltin dilaurate, 1.98% % cetyltrimethylammonium bromide, 1.13% conductive carbon black, 6.35% nano magnesium hydroxide, 9.85% dimethyl methylphosphonate, the sum of the mass percentages of each component is 100%;

[0038] Step 2: Add polycaprolactone diol to a three-necked round-bottomed flask equipped with a stirrer, temperature sensor, and vacuum interface, heat to 100°C and vacuum dehydrate for 2.5 hours, then lower the temperature to 60°C and stop vacuuming ;

[0039] Step 3, add cetyltrimethylammonium bromide and conductive carbon black to the polycaprolactone diol pretreated in step 2, stir at a speed of 2000r / min for 10min, and adjust the temperature to 20°C , to obtain solution A;

[0040] Step 4: Add 1,4-cyclohexane diisocyanate to solution A, and stir in a water bath at 60°C for 30 minutes;

[0041] Step 5, after the temperature of the reaction ...

Embodiment 2

[0046] Step 1, weigh 14.26% 1,4-cyclohexane diisocyanate, 60.59% polycaprolactone diol, 5.30% 1,4-butanediol, 0.10% dibutyltin dilaurate, 2.23 % cetyltrimethylammonium bromide, 1.30% conductive carbon black, 6.48% nano magnesium hydroxide, 9.74% dimethyl methylphosphonate, the sum of the mass percentages of each component is 100%;

[0047] Step 2: Add polycaprolactone diol to a three-necked round-bottomed flask equipped with a stirrer, temperature sensor, and vacuum interface, heat to 105°C and vacuum dehydrate for 2.5 hours, then lower the temperature to 65°C and stop vacuuming ;

[0048] Step 3, add cetyltrimethylammonium bromide and conductive carbon black to the polycaprolactone diol pretreated in step 2, stir at a speed of 2000r / min for 10min, and adjust the temperature to 20°C , to obtain solution A;

[0049] Step 4: Add 1,4-cyclohexane diisocyanate to solution A, and stir in a water bath at 60°C for 30 minutes;

[0050] Step 5. After the temperature of the reaction s...

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Abstract

The invention discloses a heat-resisting polyurethane elastomer which consists of the following components in percentage by mass: 13.60 to 18.09 percent of 1,4-cyclohexane diisocyanate, 57.01 to 61.51 percent of polycaprolactone diol, 5.30 to 5.50 percent of 1,4-butanediol, 0.06 to 0.10 percent of dibutyltin dilaurate, 1.98 to 2.23 percent of hexadecyl trimethyl ammonium bromide, 1.03 to 1.30 percent of conductive carbon black, 6.20 to 6.48 percent of nano-magnesium hydroxide, and 9.63 to 9.85 percent of dimethyl methylphosphonate, wherein the mass percentage of all the components is 100 percent. The heat-resisting polyurethane elastomer disclosed by the invention has the advantages of better wear resistance, low temperature resistance, high strength, high elongation percentage, high load supporting capacity, excellent oil-resisting property, good adhesiveness, high shock absorption and wide hardness adjustable range; the preparation method has the advantages of simplicity, clear steps, easy satisfaction of reaction conditions and easiness for operation.

Description

technical field [0001] The invention belongs to the technical field of organic polymer resin synthesis, and in particular relates to a heat-resistant polyurethane elastomer, and also relates to a preparation method of the polyurethane elastomer. Background technique [0002] Existing heat-resistant polyurethane elastomers have certain thermal stability, but their thermal stability range is not wide enough, so they cannot be used at relatively high temperatures for a long time. Polyurethane elastomers are flammable in air due to their low limiting oxygen index (LOI) (about 18%), that is, their flame retardancy is poor. In addition, the electrical insulation of polyurethane elastomer is relatively good, and it is easy to generate static electricity during use, that is, the antistatic property is poor, which in turn affects the application of elastomers. Contents of the invention [0003] The purpose of the present invention is to provide a heat-resistant polyurethane elasto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/75C08G18/66C08G18/42C08G18/10C08G18/32C08K13/02C08K3/22C08K5/5333C08K5/19C08K3/04C08J5/18C08L75/06
CPCC08G18/10C08G18/4277C08G18/664C08G18/751C08J5/18C08J2375/06C08K3/04C08K3/22C08K5/19C08K5/5333C08K13/02C08K2003/2224C08K2201/001C08K2201/011C08L2201/02C08L2201/04C08L2201/08C08G18/3206
Inventor 方长青雷婉青周星理莎莎宿健
Owner HANGZHOU GANJIANG IND