Glass fiber reinforced polyamide 6/polyamide 66 (PA6/PA66) alloy composite and preparation method thereof

A PA66 and composition technology, which is applied in the field of glass fiber reinforced PA6/PA66 alloy composition and its preparation, can solve the problems such as the limitation of the use of flame retardants, the reduction of the mechanical properties of materials, the electrical insulation properties, and the required lag, and the residence time can be achieved. Short, improve anti-oxidation performance, reduce the effect of friction coefficient

Inactive Publication Date: 2015-03-25
SHANGHAI SUNNY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the development of flame retardants is relatively lagging behind the industry's increasing requirements for materials, the addition of many kinds of flame retardants to materials will greatly reduce the mechanical properties and electrical insulation properties of materials.
For example, compared with the tracking index (CTI) dropped from 600V to 200V or even lower, in addition, with the implementation of EU RoHs and WEEE directives, the traditional brominated flame retardant system can no longer meet this requirement, while some flame retardant The use of drugs will also be restricted

Method used

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  • Glass fiber reinforced polyamide 6/polyamide 66 (PA6/PA66) alloy composite and preparation method thereof
  • Glass fiber reinforced polyamide 6/polyamide 66 (PA6/PA66) alloy composite and preparation method thereof
  • Glass fiber reinforced polyamide 6/polyamide 66 (PA6/PA66) alloy composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0028] Glass fiber reinforced PA6 / PA66 alloy composition, including each component of weight percent content shown in Table 1; Its preparation method is as follows:

[0029] (1) Weigh the raw materials according to the weight percentage content shown in Table 1, put them into a high-mixer and mix them for 2 to 5 minutes, and then discharge; the compound flame retardant masterbatch in Table 1 includes the following components in mass percentage content : Iron-removing red phosphorus masterbatch: 50%; anti-migration agent: 25%; high CTI additive: 25%;

[0030] (2) Add the above-mentioned mixed raw materials into a twin-screw extruder, extrude and granulate, and obtain the glass fiber reinforced PA6 / PA66 alloy composition; the extrusion temperature, screw speed, etc. of the twin-screw extruder The parameters are shown in Table 2.

[0031] The raw material formula of table 1 comparative example 1~3 and embodiment 1~4

[0032]

[0033] Table 2

[0034]

Embodiment 5

[0035] Embodiment 5, performance test

[0036] ASTM standards were used to perform performance test comparisons on the PA6 / PA66 alloy composition samples prepared in Examples 1-4 and Comparative Examples 1-3. The test performance comparison is shown in Table 3:

[0037] table 3

[0038]

[0039] As can be seen from Table 3, the glass fiber reinforced PA6 / PA66 alloy composition prepared by the compound flame retardant masterbatch system in Example 1, and the traditional flame retardant masterbatch (removing iron red phosphorous masterbatch Compared with the PA6 / PA66 alloy composition prepared by the particle) system, it has the following characteristics:

[0040] (1) Higher comprehensive mechanical properties: greater improvements have been made in mechanical properties such as tensile strength, flexural strength, flexural modulus, and impact strength;

[0041] (2) Higher CTI value: increase CTI from 320V to 650V;

[0042] (3) The PH value obtained in the corrosion tes...

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Abstract

The invention relates to a glass fiber reinforced polyamide 6 / polyamide 66 (PA6 / PA66) alloy composite and a preparation method of the glass fiber reinforced polyamide 6 / polyamide 66 (PA6 / PA66) alloy composite. The composite comprises the following components in percentage by weight: 20-40 percent of polyamide 6 (PA6), 15-35 percent of polyamide 66 (PA66), 2-10 percent of compound flame-retardant masterbatch, 22-35 percent of glass fiber, 0.5-1 percent of an antioxygen and 0.5-1 percent of a lubricant dispersing agent. The preparation method of the composite comprises the following steps of: weighing the raw materials according to the weight proportions; putting the raw materials into a high mixing machine to mix for 2-5 minutes; discharging; and extruding and pelleting by a twin-screw extruder to process at the temperature of 225-260 DEG C under the condition of screw revolution of 30-40HZ. Compared with the prior art, the composite has the advantages of high comparative tracking index (CTI) value, low flame-retardant precipitation property, halogen-free environment friendliness, comprehensive performance equalization and the like, and can be widely applied to products of contacts, leakage protectors, circuit breaker shells and the like in the electronics field.

Description

technical field [0001] The invention relates to a glass fiber reinforced alloy material, in particular to a glass fiber reinforced PA6 / PA66 alloy composition and a preparation method thereof. Background technique [0002] In recent years, my country's electrical and electronic industry has developed rapidly, and the demand for high-electrical insulation and flame-retardant reinforced engineering plastics is increasing, such as low-voltage vacuum contactors, circuit breakers, leakage protectors, connectors, low-voltage switches, thin-walled electrical and electronic components, etc. It is necessary to use engineering plastic materials with good comprehensive mechanical properties, flame retardant properties and electrical insulation properties. In this product area, polyamide (PA) is used in the largest amount. However, because the development of flame retardants is relatively lagging behind the industry's increasing requirements for materials, the addition of many kinds of f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08L83/04C08K13/06C08K9/06C08K7/14C08K3/02C08K5/13B29B9/06B29C47/92B29C48/92
CPCB29C47/0011B29C2947/92704B29C2947/92895B29C2947/92885B29C47/92B29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 郭建鹏孟成铭杨涛陈晓东
Owner SHANGHAI SUNNY
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