Flame-retardant glass fiber reinforced polyamide 6/polypropylene (PA6/PP) alloy composite and preparation method thereof

A composition and alloy technology, which is applied in the field of flame retardant glass fiber reinforced PA6/PP alloy composition and its preparation, can solve the problems such as limitation of use of flame retardants, hysteresis, reduction of mechanical properties and electrical insulation properties of materials, etc. The effect of short time, prevention of decomposition, and improvement of antioxidant properties

Inactive Publication Date: 2012-11-14
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 lags 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, the tracking index (CTI) drops 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. At the same time, some flame retardant The use of drugs will also be restricted

Method used

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  • Flame-retardant glass fiber reinforced polyamide 6/polypropylene (PA6/PP) alloy composite and preparation method thereof
  • Flame-retardant glass fiber reinforced polyamide 6/polypropylene (PA6/PP) alloy composite and preparation method thereof
  • Flame-retardant glass fiber reinforced polyamide 6/polypropylene (PA6/PP) alloy composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0027] Flame-retardant glass fiber reinforced PA6 / PP alloy composition, comprises each component of weight percent content shown in table 1; Its preparation method is as follows:

[0028] (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%;

[0029] (2) Add the above-mentioned mixed raw materials into a twin-screw extruder, extrude and granulate, and obtain the flame-retardant glass fiber reinforced PA6 / PP alloy composition; the extrusion temperature, screw rotation speed of the twin-screw extruder The number and other parameters are shown in Table 2.

[0030] Table 1 The raw material formulations of Comparative Examples 1-3 and Examples 1-8

[0031] ...

Embodiment 9

[0036] Embodiment 9, performance test

[0037] ASTM standards were used to perform performance test comparisons on the PA6 / PP alloy composition samples prepared in Examples 1-8 and Comparative Examples 1-3. The test performance comparison is shown in Table 3:

[0038] table 3

[0039]

[0040]

[0041] As can be seen from Table 3, compared with Comparative Examples 1, 2, and 3, Example 1 shows that the high CTI and low-separation flame-retardant PA6 / PA12 alloy composition prepared by the compound flame-retardant masterbatch system of the present invention has The following advantages:

[0042] (1) Higher comprehensive mechanical properties: greater improvements have been made in mechanical properties such as tensile strength, flexural strength, flexural modulus, and impact strength;

[0043] (2) Higher CTI value: increase CTI from 320V to 660V;

[0044] (3) The PH value obtained from the corrosion test changed from acidic to neutral, indicating that the compound fl...

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Abstract

The invention relates to a flame-retardant glass fiber reinforced polyamide 6/polypropylene (PA6/PP) alloy composite and a preparation method of the flame-retardant glass fiber reinforced polyamide 6/polypropylene (PA6/PP) alloy composite. The composite comprises the following components in percentage by weight: 20-40 percent of polyamide 6 (PA6), 20-41 percent of polypropylene (PP), 0-10 percent of a compatilizer, 0-15 percent of compound flame-retardant masterbatch, 20-40 percent of glass fiber, 0.1-1 percent of an antioxygen and 0.1-1 percent of a lubricant dispersing agent. The preparation method of the composite comprises the following steps of: weighing each component according to the weight proportions; putting the components 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 200-225 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 flame-retardant glass fiber reinforced alloy material, in particular to a flame-retardant glass fiber reinforced PA6 / PP 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, nylon / PP alloy is used in the largest amount. However, because the development of flame retardants lags behind the industry's increasing requirements for materials, the addition of ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L23/12C08K9/06C08K7/14C08K3/02C08J3/22
Inventor 郭建鹏朱晓龙汤俊杰苏吉英
Owner SHANGHAI SUNNY
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