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Flame-retardant nylon composite and preparation method and application thereof

A technology for flame-retardant nylon and composites, applied in the field of flame-retardant nylon composites and their preparation, can solve the problems of low CTI value and insufficient resources of flame-retardant synergist antimony trioxide, etc., and achieve easy industrial production and reduce cost effect

Active Publication Date: 2012-11-28
上海耐特复合材料制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the shortage of flame retardant synergist antimony trioxide resources and low CTI value in the existing halogen flame retardant nylon system, and to provide a flame retardant nylon compound and its preparation method and application

Method used

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  • Flame-retardant nylon composite and preparation method and application thereof
  • Flame-retardant nylon composite and preparation method and application thereof
  • Flame-retardant nylon composite and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The raw material formula is shown in Table 1.

[0039] Preparation:

[0040] Add polybrominated styrene, antimony trioxide, aluminum oxide, EBS, antioxidant 1098, antioxidant 168 and silicone into a high-speed mixer and mix evenly, then take out the mixture. Add PA66 from the main feeding port of the twin-screw extruder, add the mixture at the first side feeding port, and then add glass fiber at the second side feeding port, so that all materials are mixed evenly in the twin-screw extruder , extruded, cooled, and pelletized to obtain a flame-retardant nylon compound; the extrusion temperature from the feed section to the machine head is: 240°C, 275°C, 280°C, 275°C, 270°C, 265°C, 265°C, 260°C, die head temperature 270°C.

Embodiment 2

[0042] The raw material formula is shown in Table 1.

[0043] Preparation:

[0044] Add brominated polystyrene, antimony trioxide, aluminum oxide, modified EBS, antioxidant 1098, antioxidant 168 and ethylene-vinyl acetate copolymer into a high-speed mixer and mix evenly, then take out the mixture. Add PA66 from the main feeding port of the twin-screw extruder, add the mixture at the first side feeding port, and then add glass fiber and talcum powder at the second side feeding port, so that all materials are in the twin-screw extruder Mix evenly, extrude, cool, and pelletize to obtain a flame-retardant nylon compound; the extrusion temperature from the feed section to the machine head is: 240°C, 275°C, 280°C, 275°C, 270°C, 265°C, 265°C, 260°C, die head temperature 270°C.

Embodiment 3

[0046] The raw material formula is shown in Table 1.

[0047] Preparation:

[0048] Add decabromodiphenylethane, antimony trioxide, aluminum oxide, EBS, antioxidant 1010 and ethylene-vinyl acetate copolymer into a high-speed mixer and mix evenly, then take out the mixture. Add PA6 from the main feeding port of the twin-screw extruder, add the mixture at the first side feeding port, and then add talcum powder at the second side feeding port, so that all materials are mixed evenly in the twin-screw extruder , extruded, cooled, and pelletized to obtain a flame-retardant nylon compound; the extrusion temperature from the feed section to the machine head is: 210°C, 230°C, 245°C, 245°C, 240°C, 235°C, 230°C, 230°C, die head temperature 235°C.

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PUM

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Abstract

The invention discloses a flame-retardant nylon composite, which comprises the following components in percentage by weight: 35 to 75 percent of polyamide, 5 to 25 percent of halogen flame retardant, 2 to 10 percent of flame-retardant synergist, 0.1 to 3 percent of lubricant, 0.1 to 1 percent of antioxidant, 0.3 to 3 percent of surface modifying agent and 5 to 35 percent of enhancement modifying agent, wherein the flame-retardant synergist consists of antimonous oxide and aluminum oxide in a weight ratio of (3:7)-(1:1). The invention also discloses a preparation method for the flame-retardant nylon composite and application of the flame-retardant nylon composite. According to the preparation method, the using amount of the antimony sesquioxide is reduced effectively, and a comparative tracking index (CTI) value of the prepared flame-retardant nylon composite can be improved by 50 to 100 V. The flame-retardant nylon composite can be prepared by the conventional equipment and the conventional method, manufacturing equipment is not needed to be transformed, and industrial production is easy to realize.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a flame-retardant nylon composite and its preparation method and application. Background technique [0002] Polyamide, commonly known as nylon (PA), is a general term for a class of thermoplastic resins containing repeated amide groups (-NHCO-) ​​in the main molecular chain. Unmodified nylon has poor flame retardancy and is very easy to cause fire during use. Therefore, flame retardant modification of nylon is required in the fields of electronic appliances and other applications. The types of flame retardants that can be used for flame-retardant modification of nylon mainly include halogen-based, phosphorus-based, nitrogen-based, etc. At present, halogen flame retardant nylon is the most widely used. Halogenated flame retardants usually need to be combined with flame retardant synergists to achieve good flame retardant performance. At present, the most commonly used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/02C08L77/06C08L25/18C08L25/06C08L23/08C08L83/04C08K5/03C08K3/22C08K13/04C08K13/02B29C47/92B29C48/92
Inventor 陈勋森
Owner 上海耐特复合材料制品有限公司
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