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

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

Examples

Experimental program
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Example Embodiment

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

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

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

[0044] The step 2) is specifically:

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

Example Embodiment

[0046] Preparation Example 1

[0047] The preparation method of the modified nano-silica graft is as follows:

[0048] 1) Weigh a certain amount of absolute ethanol and nano-SiO 2 , KH550 is evenly mixed and put into a three-necked flask, reacted at 70℃ for 3h, filtered and dried to obtain the product KH550-g-SiO 2 ; The absolute ethanol, the nano SiO 2 , The mass ratio of the 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 are mixed and put into a three-necked flask, react at a constant temperature of 80℃ for 8h, filter and dry 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.

Example Embodiment

[0050] Preparation Example 2

[0051] The preparation method of the modified nano-silica graft is as follows:

[0052] 1) Weigh a certain amount of absolute ethanol and nano-SiO 2 , KH550 is evenly mixed and put into a three-necked flask, reacted at a constant temperature of 90℃ for 5h, filtered and dried to obtain the product KH550-g-SiO 2 ; The absolute ethanol, 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 and put into a three-necked flask, react at a constant temperature of 120℃ for 12h, filter and dry 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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