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Halogen-free flame-retardant nylon composite material capable of being subjected to laser marking and preparation method thereof

A nylon composite material and laser marking technology, which is applied in the field of laser marking polymer materials, can solve the problems of red phosphorus flame retardants turning red, failing to meet environmental protection requirements, and affecting product appearance, so as to achieve stable product quality and good laser marking. Marking effect, effect of reducing heat residence time

Active Publication Date: 2021-06-25
东莞市东翔塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the existing halogen-free flame-retardant nylon materials, most of them use red phosphorus flame retardants, but red phosphorus flame retardants often have problems such as reddish color, poor dyeing ability, and easy precipitation after a long time. It is easy to produce phosphine, which cannot meet the environmental protection requirements, and more gas gas is likely to be attached to the surface of the mold during the injection molding process to form mold scale, causing mold pollution and affecting the appearance of the product

Method used

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  • Halogen-free flame-retardant nylon composite material capable of being subjected to laser marking and preparation method thereof
  • Halogen-free flame-retardant nylon composite material capable of being subjected to laser marking and preparation method thereof
  • Halogen-free flame-retardant nylon composite material capable of being subjected to laser marking and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A laser-markable halogen-free flame-retardant nylon composite material, the nylon composite material includes the following raw materials in parts by weight:

[0043]

[0044] The nylon resin is polyhexamethylene adipamide (PA66), and the intrinsic viscosity of the nylon resin PA66 is 2.7dL / g.

[0045] The halogen-free flame retardant is aluminum diethylphosphinate, and the flame retardant synergist is vinyl functionalized polymethylsilsesquioxane (AR-511A).

[0046] Each part of laser marking powder is a mixture of modified titanium dioxide and montmorillonite in a weight ratio of 1:0.80, wherein the preparation of modified titanium dioxide comprises the following steps:

[0047] Step A1: Mix and stir tetrabutyl titanate, acetic acid, and absolute ethanol at a volume ratio of 10:1:12 to prepare solution A, and then add 0.5 wt% lanthanum nitrate to the volume ratio of ethanol to water In the mixed solution of 10:1, nitric acid was added dropwise to adjust the pH of ...

Embodiment 2

[0060] A laser-markable halogen-free flame-retardant nylon composite material, the nylon composite material includes the following raw materials in parts by weight:

[0061]

[0062] The nylon resin is a mixture of polycaprolactam (PA6) and PA12 (polylaurolactam), the intrinsic viscosity of the nylon resin PA6 is 1.8dL / g, and the intrinsic viscosity of the nylon resin PA12 is 2.2dL / g.

[0063] The halogen-free flame retardant is aluminum methyl ethyl phosphinate, and the flame retardant synergist is polymethylsilsesquioxane (3224).

[0064] Each part of laser marking powder is a mixture of modified titanium dioxide and montmorillonite with a weight ratio of 1:0.85, wherein the preparation of modified titanium dioxide comprises the following steps:

[0065] Step A1: Mix and stir tetrabutyl titanate, acetic acid, and absolute ethanol at a volume ratio of 10:2:14 to prepare solution A, and then add cerium nitrate with a doping amount of 0.5wt% to the volume ratio of ethanol to...

Embodiment 3

[0078] A laser-markable halogen-free flame-retardant nylon composite material, the nylon composite material includes the following raw materials in parts by weight:

[0079]

[0080] The nylon resin is a mixture of polyhexamethylene adipamide (PA66) and polydecanediamide sebacamide (PA1010), the intrinsic viscosity of the nylon resin PA66 is 2.2dL / g, and the nylon resin PA1010 The intrinsic viscosity is 1.6dL / g.

[0081] The halogen-free flame retardant is aluminum diethylphosphinate, and the flame retardant synergist is polymethylsilsesquioxane (3224).

[0082] Each part of laser marking powder is a mixture of modified titanium dioxide and montmorillonite in a weight ratio of 1:0.9, wherein the preparation of modified titanium dioxide comprises the following steps:

[0083] Step A1: Mix and stir tetrabutyl titanate, acetic acid, and absolute ethanol at a volume ratio of 10:2:14 to prepare solution A, and then add cerium nitrate in a doping amount of 0.5wt% until the volum...

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Abstract

The invention relates to the technical field of laser marking high polymer materials, in particular to a halogen-free flame-retardant nylon composite material capable of being subjected to laser marking and a preparation method thereof. The nylon composite material comprises nylon resin, a halogen-free flame retardant, a flame retardant synergist, laser marking powder, black master batch, an adsorbent, glass fibers, an antioxidant and a lubricant, so that the prepared nylon composite material has excellent flame retardance and high-temperature and high-humidity resistance, relatively good tensile strength and bending strength and a good laser marking effect. The material is simple in preparation process, environment-friendly, clean and low in cost, laser marking can be directly carried out in the product processing process, and continuous and automatic industrial production is realized.

Description

technical field [0001] The invention relates to the technical field of laser marking polymer materials, in particular to a halogen-free flame-retardant nylon composite material capable of laser marking and a preparation method thereof. Background technique [0002] Flame-retardant nylon materials are widely used due to their good mechanical properties, electrical insulation properties and heat resistance, but for the fields of electronics and household appliances, with the improvement of global environmental awareness, flame-retardant nylon materials are required to be halogen-free and non-toxic , environmental protection and flame retardant high efficiency direction. Furthermore, laser marking, as a new generation of precision processing and marking method, has the characteristics of good durability, non-contact processing, high flexibility, and effective anti-counterfeiting. At present, products in the electrical and electronic fields such as relays and capacitors require ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08L83/07C08L61/06C08K5/5313C08K9/04C08K9/02C08K3/22C08K3/34C08K9/10C08K7/24C08K9/06C08K7/14C08K5/13C08K5/103C08K13/06
CPCC08L77/06C08L77/02C08K2003/2241C08L2201/02C08L2201/08C08L2205/025C08L83/04C08L61/06C08K5/5313C08K9/04C08K9/02C08K3/22C08K3/346C08K9/10C08K7/24C08K9/06C08K7/14C08K5/13C08K5/103C08K13/06
Inventor 陈林陈哲周宇肖仙娥徐伟俞福建
Owner 东莞市东翔塑胶有限公司
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