A kind of flame retardant polyamide composition
A flame-retardant polyamide and composition technology, applied in the field of polymer materials, can solve the problems of non-fibrous filler reinforcement and poor heat resistance, and achieve the effects of low equipment requirements, improved glow wire performance, and reduced production costs
Active Publication Date: 2022-05-24
BENSONG ENG PLASTICS HANGZHOU
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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 the flame retardant melamine cyanuric acid
Method used
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Effect test
Embodiment 1-19 and comparative example 1-10
[0064] According to the formulations of the examples and comparative examples in Tables 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 mixed uniformly, and then put into twin-screw extrusion. The length-diameter ratio of the twin-screw extruder is 40:1, and the screw speed is 280rpm / min. After the particles are dried (usually dried in a vacuum drying oven at 80°C for 5-8 hours), the corresponding performance test standard specimens are formed in an injection molding machine.
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Abstract
The invention relates to the technical field of polymer materials, in particular to a flame-retardant polyamide composition, which comprises the following components in parts by weight: 30-92 parts of polyamide resin; 1-30 parts of halogen-free flame retardant; calcined glass 1-50 parts of fiber; wherein, the calcined glass fiber is obtained by calcining the glass fiber at a high temperature of 350-750°C. Calcined glass fibers are used in the formulation of the invention, which not only improves the glow wire performance, but also ensures the mechanical performance and heat resistance performance compared with conventional reinforcing fillers.
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 a widely used engineering plastic in the industry because of its good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication. Polyamide resin itself has poor flame retardant performance, vertical combustion can only reach UL94 V-2 level, and dripping occurs during the combustion process. It is a flammable material and can easily cause fire during use. Especially in the field of electronic products, there are countless fires caused by nylon, resulting in large losses. Therefore, it is very necessary to carry out flame retardant modification of nylon used in electronic appliances and other fields. [0003] Halogen flame retardants limit their applications due to their non-environment...
Claims
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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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