A kind of anti-ultraviolet halogen-free flame-retardant nylon composition for fasteners and its preparation method

A flame-retardant nylon and anti-ultraviolet technology, applied in the field of polymer material modification and processing, to achieve the effect of improving absorption efficiency

Active Publication Date: 2020-11-17
GUANGDONG JUSHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This material is especially suitable for fastener materials with UV resistance requirements to solve the existing problems raised in the background art above

Method used

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  • A kind of anti-ultraviolet halogen-free flame-retardant nylon composition for fasteners and its preparation method
  • A kind of anti-ultraviolet halogen-free flame-retardant nylon composition for fasteners and its preparation method
  • A kind of anti-ultraviolet halogen-free flame-retardant nylon composition for fasteners and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An anti-ultraviolet halogen-free flame-retardant nylon composition for fasteners, comprising the following raw materials: 59.8 parts of PA66 resin, 30 parts of PA6 resin, 9 parts of halogen-free flame retardant, and 0.3 parts of ultraviolet absorber A , 0.2 part of ultraviolet absorber B, 0.1 part of free radical quencher, 0.3 part of compound antioxidant, and 0.3 part of lubricant.

[0020] In order to better demonstrate the preparation process of the UV-resistant halogen-free flame-retardant nylon composition used for fasteners, this example provides a preparation method of a UV-resistant halogen-free flame-retardant nylon composition used for fasteners, including Follow the steps below:

[0021] Step 1: first dry the PA66 and PA6 resins at 90-110°C for 3-6 hours;

[0022] Step 2: Mix the weighed raw materials evenly in a mixer;

[0023] Step 3: Put the mixed raw materials into the lower hopper of the twin-screw extruder, and extrude them from the twin-screw extrude...

Embodiment 2

[0026] An anti-ultraviolet halogen-free flame-retardant nylon composition for fasteners, comprising raw materials of the following components: 74.6 parts of PA66 resin, 15 parts of PA6 resin, 9 parts of halogen-free flame retardant, and 0.3 parts of ultraviolet absorber A , 0.2 parts of ultraviolet absorber B, 0.3 parts of free radical quencher, 0.3 parts of compound antioxidant, and 0.3 parts of lubricant.

[0027] The preparation method of this example is the same as that of Example 1, so it will not be described in detail.

[0028] By performing a performance test on the product prepared in this embodiment, the tensile strength obtained is 70MPa, the flexural strength is 85MPa, the flexural modulus is 2325MPa, and the impact strength is 51kJ / m 2 , flame retardant performance V0, color difference after xenon lamp test is 3.9 and color difference after natural aging is 3.6.

Embodiment 3

[0030] An anti-ultraviolet halogen-free flame-retardant nylon composition for fasteners, comprising the following raw materials: 70.3 parts of PA66 resin, 13 parts of PA6 resin, 15 parts of halogen-free flame retardant, and 0.5 parts of ultraviolet absorber A , 0.3 parts of ultraviolet absorber B, 0.3 parts of free radical quencher, 0.3 parts of compound antioxidant, and 0.3 parts of lubricant.

[0031] The preparation method of this embodiment is the same as that of the above embodiment, so it will not be repeated.

[0032] By performing a performance test on the product prepared in this embodiment, the tensile strength obtained is 73MPa, the flexural strength is 97MPa, the flexural modulus is 2976MPa, and the impact strength is 43kJ / m 2 , flame retardant performance V0, color difference after xenon lamp test is 2.0 and color difference after natural aging is 1.8.

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Abstract

The invention discloses an anti-ultraviolet halogen-free flame-retardant nylon composition used for fasteners, and a preparation method thereof. The anti-ultraviolet halogen-free flame-retardant nyloncomposition used for fasteners comprises following raw materials: 60 to 75 parts of PA66 resin, 15 to 30 parts of PA6 resin, 9 to 15 parts of a halogen-free fire retardant, 0.3 to 0.5 part of an ultraviolet ray absorber A, 0.1 to 0.3 part of an ultraviolet ray absorber B, 0.1 to 0.5 part of a free radical quenching agent, 0.3 to 0.5 part of a composite anti-oxidant, and 0.3 to 0.5 part of a lubricant. According to the preparation method, PA66 and PA6 are subjected to drying for 3 to 6h at 90 to 110 DEG C, and weighed raw materials are mixed to be uniform in a stirring machine; the mixed raw materials are introduced into a feeding bucket of a double screw extruder for extrusion, cooling, and granulation. The anti-ultraviolet halogen-free flame-retardant nylon composition possesses long lasting ultraviolet ray resistance, the chromatism value after 1000h of aging under xenon lamp irradiation is smaller than 5.0, and the chromatism value after 180d of aging under natural light irradiation is smaller than 5.0, so that the anti-ultraviolet halogen-free flame-retardant nylon composition is especially suitable to be used for fasteners with anti-ultraviolet requirements.

Description

technical field [0001] The invention relates to the technical field of polymer material modification and processing, in particular to an ultraviolet-resistant halogen-free flame-retardant nylon composition for fasteners and a preparation method thereof. Background technique [0002] Nylon has excellent physical and mechanical properties, acid and alkali resistance, wear resistance, and electrical insulation properties. It is widely used in automobile manufacturing, mechanical equipment, electronic appliances and other industries. The development and application of flame-retardant nylon has expanded the use of nylon. application field. According to whether the flame retardant contains halogen, flame retardant nylon can be divided into two types: halogen flame retardant nylon and halogen free flame retardant nylon. Halogen flame-retardant nylon has been widely used due to its high flame-retardant efficiency, little effect on the mechanical properties of the substrate, and sim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L77/02C08L79/04C08K13/02C08K5/3492C08K5/3475C08K3/30C08K3/28C08K5/526C08K5/18C08K5/098
CPCC08L77/06C08L2201/02C08L2201/08C08L2201/22C08L2205/03C08L77/02C08L79/04C08K13/02C08K5/34928C08K5/3475C08K3/30C08K3/28C08K5/526C08K5/18C08K5/098
Inventor 李函坚杨海民陈新泰
Owner GUANGDONG JUSHI CHEM CO LTD
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