A kind of flame retardant polyamide composition and its preparation method and application
A technology of flame-retardant polyamide and composition, which is applied in the field of low-cost brominated flame-retardant polyamide composition and its preparation field, can solve the problem of low temperature resistance, flame-retardant reinforced polyamide composition mechanical properties, electrical properties of the hot wire The problem of low combustion temperature, etc., can improve the high temperature processing performance, enhance the safety performance and electrical performance, and have good anti-precipitation performance.
Active Publication Date: 2019-11-15
本松新材料技术(芜湖)有限公司
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Problems solved by technology
However, the current commercialized ultrafine magnesium silicates have the following deficiencies: low temperature resistance, easy to precipitate during the injection molding process, mechanical properties, electrical properties (CTI value 350V) and glow wire of the prepared flame-retardant reinforced polyamide composition The light-off temperature (GWIT value 850°C) is not high
Method used
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Comparison scheme
Effect test
Embodiment 1～ Embodiment 14
[0043] [Example 1-Example 14]: After adding polyamide resin, brominated flame retardant, flame retardant synergist and other components into the mixer according to the material ratio in Table 1 and mixing them, add the extruder from the main feeding port Out of the machine; the reinforcing material is fed into the extruder from the side feeding port. After melt blending, cooling, air drying and granulation, the performance test results are shown in Table 1.
[0044] [Comparative Example 1-Comparative Example 14]: The flame retardant synergist is replaced by zinc borate, antimony trioxide or ultrafine magnesium silicate salt, the distribution ratio of each material component is shown in Table 2, and its preparation method is carried out in the same manner as in the examples , to obtain granulated particles, the performance test results are shown in Table 2.
[0045] The following properties of the prepared sample were tested according to the following methods:
[0046] 1. Glo...
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Abstract
The invention belongs to the technical field of high polymer materials, particularly relates to a brominated flame retardant polyamide composition, and specifically relates to the brominated flame retardant polyamide composition which has high-efficiency flame retardance, high CTI (Comparative Tracking Index) value, high GWIT (Glow Wire Initiation Temperature) value, high heat resistance, precipitation resistance and colour change resistance, and a preparation method and application thereof. The flame retardant polyamide composition provided by the invention comprises the following componentsin percentage by weight: 30 to 80 percent of polyamide resin, 5 to 30 percent of a brominated flame retardant, 1 to 15 percent of a flame retardant synergist and 0 to 50 percent of a reinforcing material; the flame retardant synergist is a composition of stannate and kaolin which are in the weight ratio of 5:1 to 1:5. According to the flame retardant polyamide composition provided by the invention, the manufacturing cost is reduced, and meanwhile, an excellent flame retarding effect of the polyamide material is ensured (the flame retardant grade is grade UL-94 V0, and the GWIT is greater thanor equal to 875 DEG C), and the high temperature resistant processability of the material is improved; when the injection moulding processing temperature is up to 280 DEG C, even 325 DEG C, the surface of an injection moulding piece does not have precipitate basically and colour change; moreover, the injection moulding piece has excellent mechanical properties, and the precipitate resistance in ahumid environment is also good.
Description
technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a brominated flame-retardant polyamide composition, in particular to a low-cost bromine with high-efficiency flame-retardant, high CTI value, high glow wire GWIT value, high heat resistance, precipitation resistance and discoloration resistance It is a flame retardant polyamide composition and its preparation method and application. Background technique [0002] Polyamide has excellent mechanical strength and molding performance, and is widely used in automobiles, electronic appliances and other fields. However, because electronic and electrical products are prone to burning during use and cause fires, therefore, while requiring materials to have good mechanical properties, materials are also required to have good flame-retardant properties. [0003] The types of flame retardants that can be used for flame retardant modification of polyamide mainly include bromine, pho...
Claims
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IPC IPC(8): C08L77/02C08L77/06C08L25/06C08L25/18C08K13/04C08K3/24C08K5/03C08K7/14C08K3/34C08K13/02
Inventor 刘凯悦傅李丹曾昭礼张光辉周永松
Owner 本松新材料技术(芜湖)有限公司