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Flame-retardant polyamide composition

A technology for flame-retardant polyamide and composition, applied in the field of polymer materials, can solve the problems of non-fibrous filler reinforcement and poor heat resistance, achieve high fire resistance, avoid wick effect, and reduce manufacturing costs.

Active Publication Date: 2019-10-11
BENSONG ENG PLASTICS HANGZHOU
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  • Abstract
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Problems solved by technology

[0006] Chinese patent CN102585490A discloses a nitrogen-based flame-retardant polyamide composition. The filler is non-fibrous non-cylindrical frosted glass with a d90 of 10-300 μm, a d50 of 3-50 μm, and a diameter-to-thickness ratio of less than 5. It is flame-retardant Better results, but less reinforcement and heat resistance from non-fibrous fillers
According to statistics, the price of the above-mentioned ground glass (fiber) used in the polyamide system on the market is higher than the price of polyamide and flame retardant melamine cyanuric acid

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1-19 and comparative example 1-10

[0064] According to the formulas of each embodiment and comparative example in Table 1-4, the raw materials were weighed and blended, and the components of polyamide resin, halogen-free flame retardant, calcined glass fiber and other additive materials were first mixed evenly, and put into the twin-screw extruder Extrusion, strand drawing, cooling, air drying and granulation. The aspect ratio of the twin-screw extruder is 40:1, and the screw speed is 280rpm / min. After the particles are dried (usually in a vacuum oven at 80°C for 5-8 hours), the corresponding performance test standard specimens are molded in an injection molding machine.

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Abstract

The invention relates to the technical field of high polymer materials, in particular to a flame-retardant polyamide composition. The composition comprises the following ingredients in parts by weight: 30-92 parts of polyamide resin, 1-30 parts of a halogen-free flame retardant and 1-50 parts of calcined glass fiber, wherein the calcined glass fiber is prepared through calcining glass fiber at thehigh temperature of 350-750 DEG C. In the formula of the composition, the calcined glass fiber is adopted, and compared with a conventional reinforcing filler, the composition not only improves the performance of a glowing filament but also guarantees mechanical property and heat resistance simultaneously.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant polyamide composition. Background technique [0002] Polyamide resin, also known as nylon, is an engineering plastic widely used in industry due to its good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubricating properties. The flame retardant performance of polyamide resin itself is relatively poor, vertical burning can only reach UL94V-2 level, and dripping occurs during the burning process, it is a flammable material, and it is very easy to cause a fire during use. Especially in the field of electronic products, countless fires have been caused by nylon, causing great losses. Therefore, it is very necessary to modify the flame retardant of nylon used in the fields of electronic appliances. [0003] Due to non-environmental protection and low electrical performance, the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08K9/00C08K7/14C08K3/34C08K5/3492
CPCC08K9/00C08K7/14C08K3/34C08K5/34928C08L77/06C08K2201/014C08K2201/003C08K2201/004C08L2201/08C08L2201/02C08L2201/22C08L2203/20C08L77/02
Inventor 傅李丹丁广军张光辉曾昭礼卜扬帆陈勇伟谢珊
Owner BENSONG ENG PLASTICS HANGZHOU
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