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Toughened polyamide resin composite material and preparation method therefor

A technology of resin composite material and polyamide resin, which is applied in the field of composite material and its preparation, can solve the problems of poor toughness and limit the application of polyamide resin, and achieve the effect of good reproducibility

Active Publication Date: 2016-02-03
CATHAY R&D CENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the other hand, currently used polyamide resins are notch sensitive, that is, when the polyamide resin has some toughness without notches but is brittle with notches
In addition, the toughness of polyamide resins at low temperatures (such as below -10°C) is also poor, and these properties greatly limit the application of polyamide resins.

Method used

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  • Toughened polyamide resin composite material and preparation method therefor
  • Toughened polyamide resin composite material and preparation method therefor
  • Toughened polyamide resin composite material and preparation method therefor

Examples

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preparation example Construction

[0034] There is no limitation on the preparation method of the polyamide resin, and any known method can be used, such as salting pentamethylenediamine and aliphatic dibasic acid, followed by polycondensation at high temperature to obtain polyamide resin (nylon resin).

[0035] When preparing the polyamide resin, in order to adjust the molecular weight of the polyamide resin or improve its hot water resistance, an end-capping agent can be further added to the production raw materials of the polyamide resin. The blocking agent is any one or a combination of monocarboxylic acids, monoamines, acid anhydrides, monoisocyanates, monoacyl halides, monoesters and monohydric alcohols. Among them, the acid anhydride includes but not limited to phthalic anhydride. From the standpoint of production stability, monocarboxylic acids or monoamines are preferred as the end-capping agent.

[0036] The monocarboxylic acid that can be used as an end-blocking agent is not particularly limited as ...

manufacture example 1

[0094] The autoclave with an internal volume of 50L replaces the air inside by vacuuming and filling with nitrogen, and protects it with nitrogen;

[0095] A total of 1246 g of pentamethylenediamine and adipic acid in equimolar amounts, and 0.5% of adipic acid relative to the total moles of pentamethylenediamine and adipic acid were dissolved in 30000 g of distilled water to prepare a uniform aqueous solution;

[0096] Put the obtained aqueous solution into an autoclave with an internal volume of 50L, and replace it with nitrogen. Slowly extract the water vapor from the autoclave while stirring at a temperature of 110-150°C, and concentrate the mass concentration of the solution in the autoclave to the initial value. 70% of the mass concentration;

[0097] Raise the internal temperature of the autoclave to 220°C and increase the pressure to 1.8MPa, slowly extract water vapor, keep the pressure at 1.8MPa and react for 1 hour until the internal temperature reaches 260°C;

[009...

manufacture example 2

[0101] The adipic acid in Production Example 1 above was replaced with sebacic acid to obtain polyamide resin PA510 (A2).

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Abstract

The invention provides a toughened polyamide resin composite material and a preparation method therefor. The composite material at least takes polyamide resin and an impact modifier as raw materials for production, wherein the polyamide resin at least takes pentamethylene diamine and dibasic acid as raw materials for production, and the impact modifier is any or a combination of more of polyolefin, an olefin copolymer, an elastic body and an inorganic inelastic body. The preparation method for the composite material comprises the steps of carrying out melting milling by at least taking the polyamide resin and the impact modifier as the raw materials for production, cooling a linear material, extruded after the melting milling, in water, and cutting the linear material into pellets, thereby obtaining the composite material, wherein the temperature for the melting milling is 30-50 DEG C higher than the melting point of the polyamide resin, and the time for the melting milling is 0.25-8 minutes. The composite material has good toughness in case of gaps or low temperature and can be applied to the field needing toughened materials; in addition, the toughened polyamide resin composite material can take non-petroleum resources as raw materials for production and is independent of petroleum resources.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a composite material and a preparation method thereof. Background technique [0002] Polyamide resin has high rigidity, good toughness and good heat distortion temperature, and its formability and chemical resistance are relatively good, so it is used in aerospace, automobiles, electrical equipment, mechanical parts, transportation equipment, Textile, papermaking machinery and other fields have been widely used. [0003] The currently widely used polyamide products are polyamide 6 and polyamide 66, both of which are prepared from derivatives of petroleum products such as diamines and dibasic acids. However, due to the non-renewability of petroleum resources; Non-petroleum resources are used as raw materials to prepare green polyamide emerging materials with comparable properties to existing polyamide materials. [0004] On the other hand, currently used polyamide resins have notc...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L51/06C08L51/00C08K9/06C08K9/04C08K3/34
Inventor 胡定军顾宗宗秦兵兵郑毅
Owner CATHAY R&D CENT CO LTD
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