Conductive and flame-retardant polyamide 6 composite material and preparation method thereof

A composite material, polyamide technology, applied in the field of nylon 6 composite material and its preparation, can solve the problems of electrical conductivity and flame retardant performance that cannot meet the needs of use, poor flame retardant effect of halogen-free flame retardants, affecting the mechanical properties of PA6, etc. , to achieve excellent durability, improve physical and mechanical properties, and avoid harm to the human body and the environment.

CN111040432APending Publication Date: 2020-04-21深圳市汉森姆新材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-04-21

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Abstract

The invention discloses a conductive and flame-retardant polyamide 6 composite material and a preparation method thereof. Adopted raw materials comprise the following components in parts by weight: 120-150 parts of polyamide 6, 25-35 parts of a halogen-free flame retardant, 10-14 parts of a conductive modifier, 5-10 parts of a flexibilizer, 1.5-2.0 parts of a compatilizer and 0.2-0.4 part of an antioxidant. The obtained polyamide 6 composite material not only has excellent electrical conductivity and flame retardance, but also can still keep excellent mechanical properties, wear resistance, self-lubricating property, oil resistance, impact resistance and the like.
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Description

technical field

[0001] The invention relates to the technical field of polymer composite materials, in particular to a conductive and flame-retardant nylon 6 composite material and a preparation method thereof. Background technique

[0002] Polyamide (PA) is a kind of engineering plastic with various varieties, including PA6, PA66, PA11, PA12, PA46, PA610, PA612, PA1010 and so on. Among them, PA6 (polyamide 6 or nylon 6) is widely used in the fields of automobiles, machinery, electronics, and instruments because of its good mechanical properties, wear resistance, self-lubrication, oil resistance, and impact resistance. However, with the continuous development of society, the existing PA6 composite materials can no longer meet the use requirements in terms of electrical conductivity and flame retardancy, so it is necessary to develop new polyamide 6 composite materials.

[0003] In order to improve the flame retardant performance of PA6, it is necessary to add flame retardan...

Examples

preparation example Construction

[0044] The embodiment of the present invention also provides a method for preparing a conductive and flame-retardant polyamide 6 composite material, which is characterized in that it specifically includes the following steps:

[0045] (1) Take each raw material according to the above-mentioned composite material, and the solid raw material is dried for subsequent use;

[0046] (2) preparing a conductive modifier from a conductive modifier raw material;

[0047] (3) Add raw materials other than the conductive modifier to a high-speed mixer and mix evenly to obtain a mixed material;

[0048] (4) Add the mixed material and the conductive modifier into a twin-screw extruder, melt and blend, extrude, cool, air-dry, and granulate to obtain a conductive halogen-free flame-retardant PA6 composite material.

[0049] In order to further optimize the technical solution, step (2) specifically includes:

[0050] (a) Calculated in parts by weight, weigh 42 to 48 parts of conductive mica p...

Embodiment 1

[0058] Example 1 of the present invention discloses a conductive and flame-retardant polyamide 6 composite material. The raw materials used include the following components in parts by weight: 1200g polyamide 6, 250g halogen-free flame retardant, 100g conductive modifier, 50g toughening agent, 15g compatibilizer and 2g antioxidant;

[0059] The raw materials used in the halogen-free flame retardant include the following components by weight: 100 parts of active magnesium hydroxide, 10 parts of microencapsulated red phosphorus, 5 parts of antimony trioxide, 5 parts of zinc borate and 4 parts of chlorinated paraffin;

[0060] The raw materials used in the conductive modifier include the following components by weight: 42 parts of conductive mica powder, 6 parts of aluminum borate whiskers, 25 parts of conductive carbon black, 0.5 parts of lubricating base oil and 0.8 parts of silane coupling agent.

[0061] The toughening agent is maleic anhydride grafted high-density polyethyle...

Embodiment 2

[0074] Embodiment 2 of the present invention discloses a conductive and flame-retardant polyamide 6 composite material. The raw materials used include the following components in parts by weight: 1500g polyamide 6, 350g halogen-free flame retardant, 140g conductive modifier, 100g toughening agent, 20g compatibilizer and 4g antioxidant;

[0075] The raw materials used in the halogen-free flame retardant include the following components by weight: 100 parts of active magnesium hydroxide, 20 parts of microencapsulated red phosphorus, 15 parts of antimony trioxide, 15 parts of zinc borate and 10 parts of chlorinated paraffin;

[0076] The raw materials used in the conductive modifier include the following components by weight: 48 parts of conductive mica powder, 8 parts of aluminum borate whiskers, 28 parts of conductive carbon black, 1.0 parts of lubricating base oil and 1.6 parts of silane coupling agent.

[0077] Tougheners include maleic anhydride grafted low density polyethyl...