High-property flame-retardant PA6 (polyamide 6) alloy and preparation method thereof

A high-performance, alloy technology, applied in the field of polymer materials, can solve problems such as poor physical properties and flame retardancy, and limited applications

Active Publication Date: 2014-10-08
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Nylon 6 (PA6) is an engineering plastic with excellent comprehensive properties. It has good dimensional stability, good insulation, wear resistance, oil resistance, and good molding and processing performance. However, some of its physical properties and flame retardancy are not good, which greatly limits its application in some fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Weigh 70 parts of PA6, 10 parts of treated basic magnesium sulfate whiskers, 1 part of nano-silicon dioxide, 0.1 part of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) Propionic acid] pentaerythritol ester, 0.1 part of tris(2.4-di-tert-butylphenyl) phosphite.

[0033] (2) Dry PA6, treated basic magnesium sulfate, and nano silicon dioxide at 80°C for 8 hours respectively.

[0034] (3) Stir the dried PA6, treated basic magnesium sulfate whiskers, nano-silicon dioxide and antioxidant through a high-speed mixer for 10 minutes to form a mixed material.

[0035] (4) Put the mixed material into the hopper of the twin-screw extruder, melt, extrude, pelletize, water cool, pelletize and dry the obtained product. Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature of the first zone is 70°C, the temperature of the second zone is 120°C, the temperature of the third zone is 170°C, the temperature of the fourth zon...

Embodiment 2

[0038] (1) Weigh 90 parts of PA6, 16 parts of treated basic magnesium sulfate whiskers, 5 parts of nano-silicon dioxide, 0.25 parts of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 0.25 part of tris(2.4-di-tert-butylphenyl) phosphite.

[0039] (2) Dry PA6, treated basic magnesium sulfate, and nano silicon dioxide at 120°C for 12 hours respectively.

[0040] (3) Stir the dried PA6, the treated basic magnesium sulfate whiskers, nano silicon dioxide and antioxidant through a high-speed mixer for 12 minutes to form a mixed material.

[0041] (4) Put the mixed material into the hopper of the twin-screw extruder, melt, extrude, pelletize, water cool, pelletize and dry the obtained product. Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature of the first zone is 100°C, the temperature of the second zone is 180°C, the temperature of the third zone is 230°C, the temperature of the fou...

Embodiment 3

[0044] (1) Weigh 80 parts of PA6, 13 parts of treated basic magnesium sulfate whiskers, 3 parts of nano-silicon dioxide, 0.15 parts of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) Propionic acid] pentaerythritol ester, 0.15 part of tris(2.4-di-tert-butylphenyl) phosphite.

[0045] (2) Dry PA6, treated basic magnesium sulfate, and nano silicon dioxide at 100°C for 10 hours respectively.

[0046] (3) Stir the dried PA6, the treated basic magnesium sulfate whiskers, nano-silicon dioxide and antioxidant through a high-speed mixer for 11 minutes to form a mixed material.

[0047] (4) Put the mixed material into the hopper of the twin-screw extruder, melt, extrude, pelletize, water cool, pelletize and dry the obtained product. Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature of the first zone is 90°C, the temperature of the second zone is 150°C, the temperature of the third zone is 200°C, the temperature of the ...

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Abstract

The invention relates to a high-property flame-retardant PA6 (polyamide 6) alloy and a preparation method thereof. The high-property flame-retardant PA6 alloy is prepared from the following components in parts by weight: 70-90 parts of PA6, 10-16 parts of treated basic magnesium sulfate whiskers, 1-5 parts of nanometer silicon dioxide and 0.2-0.5 part of antioxidants. The preparation method comprises the following steps: uniformly mixing the PA6, the treated basic magnesium sulfate whiskers and the nanometer silicon dioxide by using a double screw extruder, and granulating to obtain the product, namely the high-property flame-retardant PA6 alloy. PA6 has the advantages of excellent comprehensive property, good insulativity, abrasion resistance, oil resistance and better forming processing property and has bad physical property and flame-retardant property, so that the application of the PA6 in certain fields is limited. According to the high-property flame-retardant PA6 alloy disclosed by the invention, the treated basic magnesium sulfate whiskers and the nanometer silicon dioxide are innovatively added, so that the flame-retardant property and physical property of the PA6 alloy are enhanced, the application field of the material is greatly expanded, and very important practical significance is achieved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-performance flame-retardant PA6 alloy and a preparation method thereof. [0002] Background technique [0003] Nylon 6 (PA6) is an engineering plastic with excellent comprehensive properties. It has good dimensional stability, good insulation, wear resistance, oil resistance, and good molding and processing performance. However, some of its physical properties and flame retardancy are not good, which greatly limits its application in some fields. Aiming at this situation, the present invention innovatively adds treated basic magnesium sulfate whiskers and nano silicon dioxide to improve the flame retardancy and physical properties of the PA6 alloy, which greatly expands the application field of the material and has a very important Practical significance. [0004] Contents of the invention [0005] The object of the present invention is to provide a high-pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K9/04C08K7/08C08K3/36C08K5/134C08K5/526B29C47/92B29C48/92
CPCB29B9/12B29B9/02B29C47/8895B29B7/46B29B9/065B29B9/06B29C47/92B29B7/72B29C48/92B29C2948/9258B29C2948/92704C08K3/36C08K5/1345C08K5/526C08K7/08C08K9/04C08K13/06C08K2201/003C08K2201/011C08L2201/02C08L77/02B29C48/40B29C2948/9259
Inventor 杨桂生刘凯
Owner HEFEI GENIUS NEW MATERIALS
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