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Novel preparation method for polyether amine composite material

A composite material and polyetheramine technology, which is applied in the field of new preparation of polyetheramine for composite materials, can solve the problems of high hydrogenation reaction temperature, low reactivity, and rising refining cost, and achieve high reactivity and low dosage , The effect of increasing the bending strength of fatigue resistance

Inactive Publication Date: 2011-08-24
东莞市科道玛电子复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic polyetheramine products are widely used, but the polyetheramine products used basically rely on imports, and imported products basically use finished polyoxypropylene diol or polyoxypropylene triol as the basic chain. Polyoxypropylene diol or polyoxypropylene The primary and secondary hydroxyl groups of propylene triol are reacted in the presence of hydrogen and a hydrogenation / dehydrogenation catalyst (Raney-based carrier), and there is a single raw material. This kind of hydrogenation catalyst has high hydrogenation reaction temperature, long production cycle, and high refining cost. The disadvantages of rising can not fully meet the needs of market applications
[0003] The main reason for the above disadvantages is the single raw material and the low reactivity of the hydrogenation / dehydrogenation catalyst, which makes the production cycle long, the temperature is high, and the refining is inconvenient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0030] The new preparation method of composite material polyether amine consists of the following technical steps:

[0031] Add 105g of glycerol as a functional group initiator and 0.7g of triethyl orthoformate as a dehydrating agent into the polymerization reactor, heat up to 100°C-110°C, add 22g of a 70% concentration potassium alkoxide catalyst after 30 minutes, and vacuumize for 30 minutes after 30 minutes. Remove the solvent and air within minutes, then replace the reactor with high-purity nitrogen, keep the temperature at 90°C-100°C, slowly add 765g of ethylene oxide, control the reaction pressure at 0.25-0.3Mpa, and react at 100°C-120°C for 3 hours Finally, the measured molecular weight was 400 to terminate the reaction, cooled, neutralized, added activated carbon for refining decolorization, removed the catalyst, and filtered to obtain 820 grams of refined polyether triols.

[0032] The dosage of the above-mentioned dehydrating agent triethyl orthoformate is 0.5%-0.8% ...

preparation example 2

[0035] The new preparation method of composite material polyether amine consists of the following technical steps:

[0036] Add 85g of functional group initiator mannitol and 0.6g of dehydrating agent trimethyl orthoformate into the polymerization reactor, heat up to 90°C-100°C, add 18g of potassium alkoxide catalyst after 30 minutes, and vacuum for 30 minutes after 30 minutes Remove the solvent and air, then fill the reactor with high-purity nitrogen, keep the temperature at 100°C-110°C, slowly add 720g of propylene oxide, control the reaction pressure at 0.1-0.3Mpa, the temperature at 110°C-120°C, and measure the molecular weight at 1000 Terminate the reaction, cool, neutralize, add activated carbon for refining decolorization, remove the catalyst, filter to obtain 775g of refined polyether hexahydric alcohol.

[0037] The dosage of the above-mentioned dehydrating agent trimethyl orthoformate is 0.5%-0.8% of the initiator glycerin.

[0038] Transfer 775g of refined polyethe...

preparation example 3

[0040] The new preparation method of composite material polyether amine consists of the following technical steps:

[0041] Add 1000g of tetrahydrofuran and 3g of dehydrating agent trimethyl orthoformate into the polymerization reactor, control the temperature to -10°C-5°C, add the cationic catalyst after 30 minutes, vacuumize and remove the air after 10 minutes, and then fill with high-purity nitrogen Replace the reaction kettle, keep the temperature at -5°C, slowly add 20g of fuming nitric acid dropwise, control the reaction pressure to 0.1Mpa, keep the temperature below 0°C, measure the molecular weight to 400 to terminate the reaction, raise the temperature to 70-90°C and distill out the unreacted The tetrahydrofuran monomer was left to stand, neutralized, refined and decolorized, the catalyst was removed, and filtered to obtain 920 g of refined polytetrahydrofuran ether glycol.

[0042] The dosage of the above-mentioned dehydrating agent trimethyl orthoformate is 0.3%-0.4...

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Abstract

The invention discloses a novel preparation method for a polyether amine composite material, which comprises the following preparation steps: (1) preparing refined polyether polyol; and (2) preparing polyether amine. In the invention, upstream raw materials are used as starting raw materials, various monomer raw materials are used to produce a hydroxyl polyol with a multi-functional group structure, a high-activity catalyst is combined, the activity of the catalyst is improved, many tests are carried out, the tested product has high comprehensive performance, production cost is reduced, and the product is suitable to be used in more industries. In the invention, new varieties of upstream raw materials of the polyether amine product are added, the polyether products are diversified, the application adaptability of the product in the composite material is improved, product quality is improved, product cost is reduced, reaction pressure and temperature are lowered, the production safety coefficient is high, equipment manufacturing cost is lowered, energy consumption is reduced, and continuous large-scale production is promoted.

Description

technical field [0001] The invention belongs to the technical field of new chemical materials, and more specifically relates to a new preparation method of polyetheramine for composite materials. Background technique [0002] At present, domestic polyetheramine products are widely used, but the polyetheramine products used basically rely on imports, and imported products basically use finished polyoxypropylene diol or polyoxypropylene triol as the basic chain. Polyoxypropylene diol or polyoxypropylene The primary and secondary hydroxyl groups of propylene triol are reacted in the presence of hydrogen and a hydrogenation / dehydrogenation catalyst (Raney-based carrier), and there is a single raw material. This kind of hydrogenation catalyst has high hydrogenation reaction temperature, long production cycle, and high refining cost. The disadvantage of rising is that it cannot fully meet the needs of market applications. [0003] The main reasons for the above-mentioned disadvan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/00C08L71/02C08G65/333
Inventor 袁应民
Owner 东莞市科道玛电子复合材料有限公司
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