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Low-VOC high-strength high-toughness nylon and preparation method thereof

A high-strength, high-toughness, nylon technology, applied in the production of bulk chemicals, etc., can solve the problems of mechanical properties decline, VOC emission reduction, and improvement, etc., to achieve the effect of low cost, obvious toughening effect, and low VOC content.

Active Publication Date: 2019-05-07
NINGBO NENGZHIGUANG NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the excessively high addition of toughening agent in the toughened nylon in the prior art, resulting in a substantial decline in its mechanical properties, and at the same time its cost increases with the increase of the addition of toughening agent. Distributing VOC will cause great danger to the human body. It provides a method that can effectively maintain the mechanical properties of the original nylon while reducing the content of the toughening agent in the toughened nylon. A low-VOC, high-strength, high-toughness nylon that achieves an ideal balance between rigidity and can also effectively reduce costs and reduce VOC emissions and its preparation method

Method used

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  • Low-VOC high-strength high-toughness nylon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh the following components in parts by weight: 95 parts of PA6 (Japan Ube, 1013B), 5 parts of toughening agent POE-g-MAH (Ningbo Nengzhiguang New Material Technology Co., Ltd. brand 413A), antioxidant (BASF b225) 0.3 parts, blend the above ingredients in a mixer for 20 minutes, add them to the twin-screw extruder, and set the temperature from zone 1 to zone 12 of the extruder to 150°C, 180°C, 200°C, 220°C, 230°C, 230°C , 235°C, 235°C, 235°C, 235°C, 230°C, 230°C, the machine head is 230°C, the mixed material is melted and plasticized, kneaded and mixed, extruded, cooled, pelletized, and dried to obtain primary products.

[0032] Put the primary product into the autoclave, control the temperature of the autoclave to 190°C, the volume of the primary product accounts for 3 / 2 of the volume of the autoclave, the pressure of the carbon dioxide injected into the autoclave is 12MPa, constant temperature and pressure for 40 minutes, and then 10MPa / The speed of s is depressur...

Embodiment 2

[0034]Weigh the following components in parts by weight: 95 parts of PA6 (Japan Ube, 1013B), 5 parts of toughening agent POE-g-MAH (Ningbo Nengzhiguang New Material Technology Co., Ltd. brand 413A), antioxidant (BASF b225) 0.3 parts, blend the above ingredients in a mixer for 20 minutes, add them to the twin-screw extruder, and set the temperature from zone 1 to zone 12 of the extruder to 150°C, 180°C, 200°C, 220°C, 230°C, 230°C , 235°C, 235°C, 235°C, 235°C, 230°C, 230°C, the machine head is 230°C, the mixed material is melted and plasticized, kneaded and mixed, extruded, cooled, pelletized, and dried to obtain primary products.

[0035] Put the primary product into the autoclave, control the temperature of the autoclave to 200°C, the volume of the primary product accounts for 3 / 2 of the volume of the autoclave, and the pressure of the carbon dioxide injected into the autoclave is 12MPa, constant temperature and pressure for 40 minutes, and then 10MPa The speed of / s is decomp...

Embodiment 3

[0037] Weigh the following components in parts by weight: 95 parts of PA6 (Japan Ube, 1013B), 5 parts of toughening agent POE-g-MAH (Ningbo Nengzhiguang New Material Technology Co., Ltd. brand 413A), antioxidant (BASF b225) 0.3 parts, blend the above ingredients in a mixer for 20 minutes, add them to the twin-screw extruder, and set the temperature from zone 1 to zone 12 of the extruder to 150°C, 180°C, 200°C, 220°C, 230°C, 230°C , 235°C, 235°C, 235°C, 235°C, 230°C, 230°C, the machine head is 230°C, the mixed material is melted and plasticized, kneaded and mixed, extruded, cooled, pelletized, and dried to obtain primary products.

[0038] Inject the primary product to get the product, then put the product into the autoclave, control the temperature of the autoclave to 200°C, the volume of the matrix product accounts for 3 / 2 of the volume of the autoclave, the pressure of carbon dioxide injected into the autoclave is 12MPa, and the constant temperature and pressure are 60 minut...

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Abstract

The invention belongs to the field of high polymer materials, and particularly relates to low-volatile organic compound (VOC) high-strength high-toughness nylon and a preparation method thereof. The low-VOC high-strength high-toughness nylon is prepared by treating low-flexibilizer-content nylon by a supercritical fluid technology, wherein the low-flexibilizer-content nylon component comprises thefollowing components: 90-100 parts by weight of nylon, 1-10 parts by weight of a flexibilizer and 0.1-1 part by weight of an assistant. The invention overcomes the defects that the addition amount ofa flexibilizer in toughened nylon in the prior art is too high, then the mechanical property of the toughened nylon is greatly reduced, meanwhile, cost is increased along with the increase of the addition amount of the flexibilizer, and VOC (volatile organic compounds) also can be dissipated to cause large danger to human bodies. The mechanical property of the original nylon can be effectively maintained under the condition that the content of the flexibilizer in the toughened nylon is reduced, an ideal balance effect between toughness and rigidity is achieved, and meanwhile the advantages ofeffectively reducing cost and reducing the dissipation amount of VOC are also achieved. The low-VOC high-strength high-toughness nylon can be mainly applied to the fields of food, automobile engineering, aviation engineering, buildings and the like.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a low-VOC high-strength and high-toughness nylon and a method for preparing low-VOC high-strength and high-toughness nylon by using supercritical fluid technology to adjust the process. Background technique [0002] Nylon is one of the five general-purpose engineering plastics. It has good mechanical properties, high thermal stability, oil resistance, acid and alkali resistance and general solvent resistance, and good electrical insulation, so it has a wide range of uses. However, the biggest disadvantage of nylon is its poor notched impact performance, which greatly limits its performance. Due to its poor toughness, unmodified nylon is difficult to apply in many fields, so it is imminent to toughen and modify it to achieve its performance in some fields. [0003] At present, the methods of toughening nylon commonly used at home and abroad include: "shell-core" copol...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L77/06C08L51/04C08K5/134C08K5/526
CPCY02P20/54
Inventor 王明赵平贾静璇张祥洲李威威张发饶
Owner NINGBO NENGZHIGUANG NEW MATERIALS TECH
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