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Anticorrosion high temperature resistant and flame-retardant nylon composite material and preparation method thereof

A technology of flame-retardant nylon and composite materials, which is applied in the field of modified nylon composite materials and its preparation, which can solve the problems of recycling materials that affect the beauty of products, limit the application range of products, shorten the service life of molds, etc., and improve the production environment of the workshop , Improve product competitiveness and improve appearance

Inactive Publication Date: 2018-07-06
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this system has a high flame retardant efficiency, that is, adding a small amount of flame retardant can achieve the required flame retardant effect, but this type of flame retardant is prone to produce antimony tribromide and other substances during processing and injection molding. Gas, while the processing temperature of high-temperature nylon is higher, the polymer resin and its blends decompose more seriously during the injection molding process, and more gas is generated, which will corrode the surface of the mold made of stainless steel and other materials in the injection molding machine, shorten the Mold life cycle, and affect the appearance of the product
At present, the main solution is to replace the mold regularly, which costs more
[0007] In addition, the flame-retardant nylon with bromine-antimony system has a low CTI value, and black stripes appear on the gate, runner and product surface after long-term injection molding, which affects the appearance of the product and the recycling of saliva materials, which will limit the application of the product scope

Method used

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  • Anticorrosion high temperature resistant and flame-retardant nylon composite material and preparation method thereof
  • Anticorrosion high temperature resistant and flame-retardant nylon composite material and preparation method thereof
  • Anticorrosion high temperature resistant and flame-retardant nylon composite material and preparation method thereof

Examples

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Effect test

preparation example Construction

[0053]

[0054] A method for preparing a corrosion-resistant and high-temperature-resistant flame-retardant nylon composite material, comprising the following steps:

[0055] (1), 30-90 parts of dry high-temperature resistant nylon, 5-30 parts of brominated flame retardant, 1-10 parts of zinc borate, 0.1-8 parts of silicon powder, 0.1-0.8 parts of antioxidant, 0.1-0.8 parts lubricant mixed to obtain a mixture;

[0056] (2) Add the mixture into the twin-screw extruder from the main feeding port of the twin-screw extruder, and add 0-60 parts of reinforcing fibers to the twin-screw extruder from the side feeding port of the twin-screw extruder. After exiting the machine, after drawing, cooling, pelletizing and drying, the corrosion-resistant, high-temperature, flame-retardant nylon composite material is obtained.

[0057] Among them, the dry high-temperature-resistant nylon in step (1) is obtained by air-drying high-temperature-resistant nylon at 80-120°C for 4-8 hours. Becaus...

Embodiment 1

[0065] This example provides a modified corrosion-resistant and high-temperature-resistant flame-retardant nylon composite material, the raw materials of which include the following components:

[0066]

[0067]

[0068] This embodiment also provides a method for preparing a corrosion-resistant and high-temperature-resistant flame-retardant nylon composite material, which includes the following steps:

[0069] (1), drying high temperature resistant nylon (PA6T / 66) in a drying oven at 120°C for 4 hours to obtain dry high temperature resistant nylon (PA6T / 66);

[0070] (2), 40 parts of dry high temperature resistant nylon (PA6T / 66), 15 parts of brominated flame retardant (HP3010), 4 parts of zinc borate, 1 part of silicon powder, 0.4 parts of antioxidant (H10), 0.4 parts The lubricant (A-C540A) is mixed in a high-speed mixer, the speed of the high-speed mixer is 600rpm, the mixing time is 4min, and the mixture is obtained after mixing;

[0071] (3) Add the mixture into th...

Embodiment 2

[0074] This example provides a modified corrosion-resistant and high-temperature-resistant flame-retardant nylon composite material, the raw materials of which include the following components:

[0075]

[0076] This embodiment also provides a method for preparing a corrosion-resistant and high-temperature-resistant flame-retardant nylon composite material, which includes the following steps:

[0077] (1), drying high temperature resistant nylon (PA6T / 6) in a drying oven at 80°C for 8 hours to obtain dry high temperature resistant nylon (PA6T / 6);

[0078] (2), 30 parts of dry high temperature resistant nylon (PA6T / 6), 30 parts of brominated flame retardant (PBS-64HW), 10 parts of zinc borate, 8 parts of silicon powder, 0.8 parts of antioxidant (0.4 parts of 1098 Mix with 0.4 part of 168), 0.8 part of lubricant (P12) in high-speed mixer, the rotating speed of high-speed mixer is 800rpm, the time of mixing is 2min, obtain mixture after mixing;

[0079] (3), the mixture is ad...

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Abstract

The invention provides an anticorrosion high temperature resistant and flame-retardant nylon composite material and a preparation method thereof. The composite material includes: 30-90 parts of high temperature resistant nylon, 0-60 parts of reinforcement fiber, 5-30 parts of a brominated flame retardant, 1-10 parts of zinc borate, 0.1-8 parts of silicon powder, 0.1-0.8 part of an antioxidant, and0.1-0.8 part of a lubricant. The method includes: mixing dry high temperature resistant nylon, the brominated flame retardant, zinc borate, silicon powder, the antioxidant and the lubricant to obtaina mixture; adding the mixture into a twin-screw extruder from a main feed port, adding the reinforcement fiber into the twin-screw extruder from a side feed port, and conducting drawing, cooling, grain cutting and drying, thus obtaining the anticorrosion high temperature resistant and flame-retardant nylon composite material. The anticorrosion high temperature resistant and flame-retardant nyloncomposite material provided by the invention has a high comparative tracking index, and can avoid generation of methane gas at high temperature, thus reducing corrosion of a mold surface.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a modified nylon composite material and a preparation method thereof. Background technique [0002] Polyamide, commonly known as nylon, refers to a polymer with amide group (‐CONH‐) repeating structural units on the polymer chain. Due to its excellent comprehensive properties such as high strength, wear resistance, self-lubrication, oil resistance and chemical corrosion resistance, and With better performance and price ratio, it has become the engineering plastic with the largest consumption and the widest application range. [0003] In recent years, in addition to the steady increase in the output of major varieties such as PA6 and PA66, the importance of PA11, PA12, PA46 and some semi-aromatic nylons as special applications is also increasing. Now the world's annual output of nylon resin exceeds 130×104t, and it occupies an increasingly important position in engineerin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L25/06C08L25/18C08K13/04C08K7/14C08K7/06C08K3/38C08K3/36B29C47/92B29C48/92
CPCC08L77/06B29C48/92B29C2948/9258B29C2948/92704C08L25/18C08L2201/02C08L2201/08C08L25/06C08K13/04C08K7/14C08K2003/387C08K3/36C08K7/06
Inventor 杨桂生赵冬云严莉莉
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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