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Antistatic and high-performance PA66 composite material and preparation method thereof

A technology of PA66 and composite materials, which is applied in the field of antistatic high-performance PA66 composite materials and its preparation, can solve the problems of PA66 antistatic performance and mechanical properties that cannot be adapted, achieve good dispersion, improve mechanical properties, and improve antistatic performance Effect

Inactive Publication Date: 2017-11-10
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an antistatic high performance PA66 composite material and its preparation method, to solve the problem that the antistatic performance and mechanical properties of PA66 cannot adapt to the application of the existing technology

Method used

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  • Antistatic and high-performance PA66 composite material and preparation method thereof
  • Antistatic and high-performance PA66 composite material and preparation method thereof
  • Antistatic and high-performance PA66 composite material and preparation method thereof

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preparation example Construction

[0041] The preparation method of the antistatic high-performance PA66 composite material of any one of the above-mentioned, comprises the following steps:

[0042] 1) Weigh 50-70 parts of PA66, 20-30 parts of modified nano-SiO 2 The graft, 6-10 parts of antistatic agent, 0.1-0.5 parts of antioxidant, 0.1-0.3 parts of lubricant are mixed and stirred evenly to obtain a mixture;

[0043] 2) Extruding and granulating the mixture obtained in step 1), to obtain the PA66 composite material.

[0044] Described step 2) specifically is:

[0045] Put the mixture obtained in step 1) into the hopper of a twin-screw extruder for extrusion and granulation, wherein the twin-screw extruder includes six temperature zones arranged in sequence, and the temperature in the first zone is 240-270 ℃, the temperature in the second zone is 260~290℃, the temperature in the third zone is 260~290℃, the temperature in the fourth zone is 260~290℃, the temperature in the fifth zone is 260~290℃, the temperat...

preparation example 1

[0047] Described modified nano silicon dioxide graft, its preparation method is:

[0048] 1) Weigh a certain amount of absolute ethanol, nano-SiO 2 , KH550 mixed evenly, put into a three-necked flask, react at a constant temperature of 70°C for 3 hours, filter and dry to obtain the product KH550-g-SiO 2 ; The dehydrated alcohol, the nano-SiO 2 , The mass ratio of KH550 is 120:30:4.

[0049] 2) Weigh a certain amount of KH550-g-SiO in step 1) 2, Sodium lauryl sulfate, sodium bicarbonate, styrene and potassium persulfate were evenly mixed and put into a three-necked flask, reacted at a constant temperature of 80°C for 8 hours, filtered and dried to obtain the product modified nano-SiO 2 Graft; the KH550-g-SiO 2 , The mass ratio of the sodium lauryl sulfate, the sodium bicarbonate, the styrene and the potassium persulfate is 40:2:1:60:3.

preparation example 2

[0051] Described modified nano silicon dioxide graft, its preparation method is:

[0052] 1) Weigh a certain amount of absolute ethanol, nano-SiO 2 , KH550 were mixed evenly and put into a three-necked flask, reacted at a constant temperature of 90°C for 5 hours, filtered and dried to obtain the product KH550-g-SiO 2 ; The dehydrated alcohol, the nano-SiO 2 , The mass ratio of the KH550 is 160:40:6.

[0053] 2) Weigh a certain amount of KH550-g-SiO in step 1) 2 , Sodium lauryl sulfate, sodium bicarbonate, styrene and potassium persulfate are mixed evenly and put into a three-necked flask, reacted at a constant temperature of 120°C for 12 hours, filtered and dried to obtain the product modified nano-SiO 2 Graft; the KH550-g-SiO 2 , The mass ratio of the sodium lauryl sulfate, the sodium bicarbonate, the styrene and the potassium persulfate is 60:4:3:80:6.

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Abstract

The invention relates to an antistatic and high-performance PA66 (polyamide66) composite material and a preparation method thereof. The composite material is composed of the following components in parts by weight: 50-70 parts of PA66; 20-30 parts of a modified nano silicon dioxide graft; 6-10 parts of an antistatic agent; 0.1-0.5 part of an antioxidant; and 0.1-0.3 part of a lubricant. According to the technical scheme, the silane coupling agent and the hydroxyl radicals on the surface of the nano silicon dioxide are subjected to condensation, so that agglomeration of the nano silicon dioxide is prevented, the nano silicon dioxide can be uniformly dispersed in the PA66 matrix, and the mechanical properties of the PA66 composite material are improved. The modified nano silicon dioxide graft is a core-shell type graft which is formed by taking a KH550-g-SiO2 as a core and PS (polystyrene) as a shell body, the graft has better dispersity than that of simple nano silicon dioxide, and the graft has an effect of distributing loads uniformly when the composite material is subjected to external force, so that the mechanical properties of the PA66 composite material are improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to an antistatic high-performance PA66 composite material and a preparation method thereof. Background technique [0002] Polyamide 66 (PA66), as a common thermoplastic, is widely used. However, with the development of science and technology, in some specific fields, people have higher and higher performance requirements for PA66 materials, especially antistatic performance and mechanical properties, which greatly limits the application of PA66 composite materials in these special fields. Contents of the invention [0003] The purpose of the present invention is to provide an antistatic high-performance PA66 composite material and its preparation method to solve the problem that the antistatic performance and mechanical properties of PA66 cannot be adapted to the application of the current technology. [0004] The present invention is achieved through the following tech...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L51/10C08K5/00C08K5/098C08K5/17C08K5/42C08F292/00C08F212/08B29C47/92B29C48/92
CPCC08L77/06B29C48/92B29C2948/9258B29C2948/92704C08F292/00C08K2201/011C08K2201/014C08K2201/017C08L2201/04C08L2207/53C08L51/10C08K5/098C08K5/17C08K5/00C08K5/42C08F212/08
Inventor 刘凯
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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