Preparation method of water-soluble polyarylether sizing agent and application thereof

A technology for water-soluble poly and polyarylene ethers, which is applied in the field of preparation of water-soluble polyarylene ether sizing agents, and can solve the problems of easy decomposition and low interface bonding force of thermoplastic resins.

Active Publication Date: 2021-06-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In summary, there is still room for improvement in the temperature resistance of existing sizing agents, and there is still room for expansion in the types of sizing agents. A water-soluble polyarylether small molecule sizing agent is developed and applied to basalt fiber Surface treatment to overcome the problem of easy decomposition at high temperature and low interfacial binding force with thermoplastic resin, which is not suitable for the processing and preparation of high-performance thermoplastic resin composite materials, which is of great significance for expanding the application of high-performance fibers and their composite materials

Method used

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  • Preparation method of water-soluble polyarylether sizing agent and application thereof
  • Preparation method of water-soluble polyarylether sizing agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh phenolphthalein (6.4g), potassium p-hydroxybenzenesulfonate (18.24g), 2,6-dichlorobenzonitrile (16.93g) under the effect of potassium carbonate (28.98g), in N-methylpyrrolidone (35ml) and toluene (11ml) in a mixed solvent with a heating rate of 10°C / min to 140°C, keep the temperature and stir for 3h, then raise the temperature to 165°C at a heating rate of 10°C / min, keep the temperature for 3h, A polyarylether reaction solution was obtained.

[0040] Pour the polyarylether reaction solution into dehydrated ethanol (55ml), thoroughly soak for 12h and crush, then add dehydrated ethanol (10ml) and heat to 60°C and wash repeatedly for 3 times (the amount of ethanol each time is the total amount of ethanol used for soaking 1 / 8~1 / 5), after vacuum drying at 80°C for 4 hours, a small molecule of polyarylether was obtained. Take 1 g of small polyarylether molecules and dissolve them in 8 ml of 36% acetic acid aqueous solution to obtain a water-soluble polyarylether sizing...

Embodiment 2

[0043] Weigh phenolphthalein (9.6g), potassium p-hydroxybenzenesulfonate (15.96g), 2,6-dichlorobenzonitrile (16.93g) under the effect of potassium carbonate (28.98g), in N-methylpyrrolidone (32ml) and toluene (9ml) in a mixed solvent with a heating rate of 10°C / min to 145°C, keep the temperature and stir for 3h, then raise the temperature to 165°C at a heating rate of 10°C / min, keep the temperature for 3h, A polyarylether reaction solution was obtained.

[0044] Pour the polyarylether reaction solution into absolute ethanol (47ml), thoroughly soak for 8 hours and then pulverize, then add absolute ethanol (9ml) and heat to 50°C and wash repeatedly for 3 times (the amount of ethanol each time is the total amount of ethanol used for soaking. 1 / 8 to 1 / 5), the polyarylether small molecule was obtained after vacuum drying at 80°C for 4 hours. Take 1 g of small polyarylether molecules and dissolve them in 8 ml of 36% acetic acid aqueous solution to obtain a water-soluble polyaryleth...

Embodiment 3

[0047] Weigh phenolphthalein (12.8g), potassium p-hydroxybenzenesulfonate (14.6376g), 2,6-dichlorobenzonitrile (16.7647g) under the effect of potassium carbonate (30.36g), in N-methylpyrrolidone (33ml) and toluene (10ml) in a mixed solvent with a heating rate of 10°C / min to 140°C, keep the temperature and stir for 3h, then raise the temperature to 170°C at a heating rate of 10°C / min, keep the temperature for 2h, A polyarylether reaction solution was obtained.

[0048] Pour the polyarylether reaction solution into dehydrated ethanol (50ml), fully soak for 12h and crush it, then add dehydrated ethanol (10ml) and heat to 60°C and wash repeatedly for 3 times (the amount of ethanol each time is the total amount of ethanol used for soaking 1 / 8 to 1 / 5), and vacuum-dried at 60°C for 6 hours to obtain small polyarylether molecules. Take 1 g of small polyarylether molecules and dissolve them in 7 ml of 36% acetic acid aqueous solution to obtain a water-soluble polyarylether sizing agen...

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Abstract

The invention discloses a preparation method of a water-soluble polyarylether sizing agent and an application thereof; which belong to the technical field of high-performance fiber sizing agents. The preparation method comprises the following steps: mixing phenolphthalein, potassium p-hydroxybenzenesulfonate, 2, 6-dichlorobenzonitrile and potassium carbonate, carrying out temperature programming reaction in a mixed solvent to obtain a polyarylether reaction solution, mixing the polyarylether reaction solution with absolute ethyl alcohol, fully soaking, crushing, heating and washing with absolute ethyl alcohol, and carrying out vacuum drying to obtain polyarylether small molecules; and dissolving in an acetic acid aqueous solution to obtain the water-soluble polyarylether sizing agent. The sizing agent prepared by the invention has the characteristics of good film-forming property, strong adhesive force and outstanding temperature resistance, can solve the problems that the existing high-performance fiber surface sizing agent is easy to decompose at high temperature and is weak in interface bonding and bonding acting force with a thermoplastic resin matrix, improves the comprehensive performance of a fiber reinforced resin matrix composite material, and expands the application field and range of the reinforced resin-based composite material.

Description

technical field [0001] The invention relates to the technical field of high-performance fiber sizing agents, in particular to a preparation method and application of a water-soluble polyarylether sizing agent. Background technique [0002] Basalt fiber is a continuous fiber made of natural volcanic extrusive rock and rapidly drawn after melting at 1500-1700°C. It has outstanding mechanical properties, excellent temperature resistance, stable chemical properties, green production, and no carcinogens. It is a key strategic material for the country's key development, and it is also one of the advanced materials and high-end industries that are prioritized for development. Basalt fiber fabrics have potential application prospects in many fields. In recent years, the research and application of basalt fiber reinforced resin matrix composites have become increasingly widespread, and they are involved in refractory materials, filter materials, building materials, thermal insulation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/40C03C25/32C03C25/465
CPCC08G65/4006C08G65/4087C08G65/4093C03C25/465C03C25/32
Inventor 徐明珍任登勋曾树义林兰忻夏鼎国秦少龙
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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