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Dark-color flame-retardant nylon and preparation method thereof

A flame-retardant nylon and dark-colored technology, applied in the field of nylon material reinforcement, can solve the problems of toner precipitation and floating fibers on the surface, and achieve the effects of enhanced fusion, uniform distribution, and simple operation steps

Active Publication Date: 2021-08-03
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on the defects in the prior art, the object of the present invention is to provide a dark flame-retardant nylon, which not only improves the coloring ability of the toner in its components through special component selection and treatment, but also enhances the coloring ability of each component. Fully integrated, it solves the problems of toner precipitation and floating fibers on the surface of existing flame-retardant nylon products

Method used

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  • Dark-color flame-retardant nylon and preparation method thereof
  • Dark-color flame-retardant nylon and preparation method thereof

Examples

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Embodiment 1～4

[0032] The embodiment of dark flame-retardant nylon of the present invention, the preparation method of described product, comprises the following steps:

[0033] Put the lubricant and colorant into an ultrasonic cell crusher, crush it at room temperature for 4 hours at a frequency of 25kHz to a particle size ≤ 200nm, mix and stir for 20 minutes, then mix with other components evenly in proportion, and transfer to twin-screw extrusion In a machine, it was melt-blended at 230°C and then extruded and granulated to obtain the dark-colored flame-retardant nylon.

[0034] The raw materials used in each embodiment are as follows, and the proportioning ratio of the raw materials is shown in Table 1.

[0035] PA6 resin: high viscosity PA6 resin, grade HY-2800;

[0036] Glass fiber: chopped glass fiber, the length of the chopped glass fiber is 3-25mm, the brand is Chongqing Glass Fiber ECS301HP-3-H;

[0037] Antioxidant: Antioxidant 1098;

[0038] Flame retardant: brominated polysty...

Embodiment 5

[0048] The only difference between this example and Example 1 is that the time of the ultrasonic crushing treatment is 2 hours, and the particle size of the lubricant and the colorant after treatment is >200nm (the particle size distribution is 500nm-5μm).

[0049] Table 1

[0050]

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Abstract

The invention discloses dark flame-retardant nylon and a preparation method thereof, and belongs to the field of nylon material reinforcement. According to the nylon product, the specific hyperbranched lubricant is added into the components, so that the integration among the components can be effectively enhanced, the connection between glass fibers and resin is tighter, and the floating fiber phenomenon is inhibited; through ultrasonic crushing treatment of a lubricant and a pigment precursor, the pigment can be distributed more uniformly in the mixing process, the coloring power of a final product can still be guaranteed even if a large content of flame retardant is introduced into the components, and the condition of pigment precipitation cannot occur. The invention also discloses the preparation method of the dark flame-retardant nylon, and the method is simple in operation steps and can realize industrial large-scale products.

Description

technical field [0001] The invention relates to the field of nylon material reinforcement, in particular to a dark flame-retardant nylon and a preparation method thereof. Background technique [0002] PA6, also known as nylon 6, is widely used in industrial products because of its excellent strength and toughness, good processability and high thermal stability. In the prior art, glass fiber is often used to enhance and modify PA6 to endow the product with higher strength. However, in the surroundings of some electric tool heating elements and some industrial electrical appliances, the product needs to have certain flame retardant performance, and some products even require material resistance. The combustion level reaches V0. Therefore, these nylon materials will add a large amount of flame retardants to the components, but this practice hinders the mutual fusion between the pigment, glass fiber and PA6 resin, and the insufficient fusion of glass fiber and PA6 resin makes t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L25/06C08L87/00C08L67/00C08K7/14
CPCC08L77/02C08L2201/02C08L25/06C08L87/00C08L67/00C08K7/14
Inventor 孙力强袁刚敬新科祝润生曾赛
Owner KINGFA SCI & TECH CO LTD