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Preparation method of liquid crystal nylon alloy

A nylon and alloy technology, applied in the field of liquid crystal/nylon alloy preparation, can solve problems such as poor fluidity and dissatisfaction, and achieve the effects of reducing cost, reducing dosage and good processing stability

Inactive Publication Date: 2011-06-01
KINGFA SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although semi-aromatic polyamide has good temperature resistance, it has poor fluidity during processing, and some problems will occur during injection molding; especially when injecting thin-walled parts, there will be insufficient injection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 8.5kg of PA10T oligomer powder below 30 meshes and 1.5kg of TLCP oligomer powders below 30 meshes into the high mixer and mix evenly, make particles with a particle size of 2-8mm through the granulator, and add them to the In the viscous device, the temperature was raised to 230°C with nitrogen gas, and the reaction was performed for 1 hour, and then vacuumed to below 80Pa, and the temperature was raised to 260°C for 10 hours to complete the reaction.

Embodiment 2

[0024] Add 5.0kg of PA10T oligomer powder below 30 mesh and 5.0kg of TLCP oligomer powder below 30 mesh into the high mixer and mix evenly, and make particles with a particle size of 2-8mm through the granulator, and add them to the increaser In the viscous device, the temperature was raised to 230°C with nitrogen gas, and the reaction was performed for 1 hour, and then vacuumed to below 80Pa, and the temperature was raised to 270°C for 6 hours to complete the reaction.

Embodiment 3

[0026] Add 1.5kg of PA10T oligomer powder below 30 mesh and 8.5kg of TLCP oligomer powder below 30 mesh into the high mixer and mix evenly, and make particles with a particle size of 2-8mm through the granulator, and add them to the increaser In the viscous device, the temperature was raised to 230°C with nitrogen gas, and the reaction was carried out for 1 hour, and then vacuumed to below 80Pa, and the temperature was raised to 260°C for 16 hours to complete the reaction.

[0027] The properties of Examples 1-3 are shown in Table 1.

[0028] Table 1

[0029] Example

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PUM

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Abstract

The invention discloses a preparation method of a liquid crystal nylon alloy, comprising the following steps of: firstly, smashing a liquid crystal oligomer and a high-temperature nylon oligomer, fully mixing, and granulating; and secondly, adding granules into a viscosifying device, introducing nitrogen gas at a temperature of 200-300 DEG C and then vacuumizing, and carrying out a viscosifying reaction. According to the preparation method, the consumption of liquid crystal is reduced, thereby the cost is lowered. Moreover, the secondary granulation mechanical performance of the liquid crystal nylon alloy prepared with the method disclosed by the invention is reduced slightly, and the prepared high-temperature liquid crystal nylon alloy has the advantages of good heat resistance, melt contact liquidity and processing stability, and cannot corrode a mould.

Description

technical field [0001] The invention relates to a preparation method of liquid crystal / nylon alloy. Background technique [0002] Liquid crystal is an excellent engineering plastic, but its production cost is too high, and its application is greatly limited. Semi-aromatic polyamide is a polyamide resin prepared by polycondensation of diamines or dicarboxylic acids with aromatic rings and aliphatic dicarboxylic acids or diamines, and is one of the aromatic polyamides. Due to the introduction of aromatic rings into the main chain of polyamide molecules, the heat resistance and mechanical properties are improved, the water absorption rate is reduced, and it has a more suitable performance / price ratio. It is between general engineering plastic nylon and high temperature resistant engineering plastics. A resin with high heat resistance between PEEK and mainly used in the automotive and electrical and electronic industries. [0003] Although semi-aromatic polyamides have good te...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L77/06
Inventor 罗湘安曹民饶先花代惊奇曾祥斌蔡彤旻
Owner KINGFA SCI & TECH CO LTD
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