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Nylon 6/inorganic particle/polytrimethylene terephthalate nano composite material and preparation method thereof

A technology of polytrimethylene terephthalate and polytrimethylene terephthalate, which is applied in the field of engineering plastics and its preparation, can solve the problems of poor low-temperature impact strength, high water absorption of nylon 6, insufficient toughness, etc. Good creep resistance, simple preparation process, and the effect of broadening the field of use

Inactive Publication Date: 2008-12-31
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nylon 6 is one of the most important varieties of nylon series products. It has the characteristics of wear-resistant self-lubrication, oil resistance, acid and alkali resistance and good processing fluidity. Nylon 6 has good mechanical and physical properties and superior cost performance, making it a Nylon 6 is an engineering plastic with a wide range of uses, but nylon 6 has defects such as high water absorption, poor dimensional stability, high molding shrinkage, poor low-temperature impact strength, insufficient toughness in a dry state, and poor creep resistance, which limits its use in some field application
At present, the research on nylon 6 / inorganic particle nanocomposites or nylon 6 / polyester alloyed composites has achieved a lot of results, and some composite materials have been industrialized, but there are few studies on nylon 6 / inorganic particles / polyester composites. no industrial products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] After drying the nylon 6 / silica nanocomposite and poly(trimethylene terephthalate) in vacuum at a temperature of 90°C for 24 hours, the nylon 6 / silica nanocomposite 950 g, polytrimethylene terephthalate Diester 50 grams, adopt twin-screw compounding extruder to carry out mixing modification to nylon 6 / silica nano-composite material with polytrimethylene terephthalate, the temperature control of twin-screw compounding extruder is set five The zones are: 220°C, 225°C, 230°C, 235°C, 230°C, the head and melt temperature are set to 220°C and 210°C respectively, the extrusion speed is 50r / min, and the extruded material is cooled underwater After pelletizing, a nylon 6 / inorganic particle / polytrimethylene terephthalate composite material with a polytrimethylene terephthalate content of 5% is obtained.

Embodiment 2

[0022] After drying the nylon 6 / silica nanocomposite and poly(trimethylene terephthalate) in vacuum at a temperature of 90°C for 24 hours, the nylon 6 / silica nanocomposite 900 g, polytrimethylene terephthalate 100 grams of diester, polytrimethylene terephthalate is used to mix and modify nylon 6 / silica nanocomposite in a twin-screw compounding extruder, and the temperature control of the twin-screw compounding extruder is set to five The zones are: 220°C, 225°C, 230°C, 235°C, 230°C, the head and melt temperature are set to 220°C and 210°C respectively, the extrusion speed is 50r / min, and the extruded material is cooled underwater After pelletizing, a nylon 6 / inorganic particle / polytrimethylene terephthalate composite material with a polytrimethylene terephthalate content of 10% is obtained.

Embodiment 3

[0024] After drying the nylon 6 / silica nanocomposite and poly(trimethylene terephthalate) in vacuum at a temperature of 90°C for 24 hours, the nylon 6 / silica nanocomposite 800 g, polytrimethylene terephthalate 200 grams of diester, polytrimethylene terephthalate is used to mix and modify nylon 6 / silicon dioxide nanocomposite in a twin-screw compounding extruder, and the temperature control of the twin-screw compounding extruder is set to five The zones are in order: 220°C, 225°C, 230°C, 235°C, 230°C, the temperature of the head and the melt are set to 220°C and 210°C respectively, the extrusion speed is 50r / min, and the extruded material is cooled underwater Cut into pellets to obtain a nylon 6 / inorganic particle / polytrimethylene terephthalate composite material with a polytrimethylene terephthalate content of 20%.

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PUM

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Abstract

The invention discloses a nylon6 / abio-particle / polybutylene propylene nanometer composite material and preparing method, which concludes 50%-97.5% nylon6 / abio-particle nanometer composite material, 2.5-50% polybutylene propylene. The method comprises the following steps: drying nylon6 / abio-particle nanometer composite material and polybutylene propylene for 12-24 hours at 100-130DEG C; mixing the above materials; heating and melting; piling out the melting mixture; lashing strip under the water; cooling and cutting grain; drying and get the nylon6 / abio-particle / polybutylene propylene nanometer composite material.

Description

technical field [0001] The invention relates to an engineering plastic and a preparation method thereof. Background technique [0002] Nylon 6 is one of the most important varieties of nylon series products. It has the characteristics of wear-resistant self-lubrication, oil resistance, acid and alkali resistance and good processing fluidity. Nylon 6 has good mechanical and physical properties and superior cost performance, making it a Nylon 6 is an engineering plastic with a wide range of uses, but nylon 6 has defects such as high water absorption, poor dimensional stability, high molding shrinkage, poor low-temperature impact strength, insufficient toughness in a dry state, and poor creep resistance, which limits its use in some field applications. At present, the research on nylon 6 / inorganic particle nanocomposites or nylon 6 / polyester alloyed composites has achieved a lot of results, and some composite materials have been industrialized, but there are few studies on nyl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L67/03C08K7/00
Inventor 张平袁军姜勇许福潘青山
Owner XIANGTAN UNIV