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Flame retardant glass fiber reinforced PA6 (Polyamide 6)/PPO (Poly-p-Phenylene Oxide) alloy composite and preparation method thereof

A composition and alloy technology, applied in the field of flame retardant glass fiber reinforced PA6/PPO alloy composition and its preparation, can solve the problems of reducing the mechanical properties of materials, electrical insulation properties, restrictions on the use of flame retardants, hysteresis, etc. Antioxidative properties, short residence time, anti-decomposition effect

Inactive Publication Date: 2012-10-17
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 PA6 (Polyamide 6)/PPO (Poly-p-Phenylene Oxide) alloy composite and preparation method thereof
  • Flame retardant glass fiber reinforced PA6 (Polyamide 6)/PPO (Poly-p-Phenylene Oxide) alloy composite and preparation method thereof
  • Flame retardant glass fiber reinforced PA6 (Polyamide 6)/PPO (Poly-p-Phenylene Oxide) alloy composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0027] Flame-retardant glass fiber reinforced PA6 / PPO alloy composition, including 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 / PPO alloy composition; the extrusion temperature, screw rotation speed of the twin-screw extruder The number and other parameters are shown in Table 2.

[0030] The raw material formula of table 1 comparative example 1~3 and embodiment 1~8

[0031] ...

Embodiment 9

[0035] Embodiment 9, performance test

[0036] ASTM standards were used to perform performance test comparisons on the PA6 / PPO alloy composition samples prepared in Examples 1-8 and Comparative Examples 1-3. The test performance comparison is shown in Table 3:

[0037] table 3

[0038]

[0039]

[0040] 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:

[0041] (1) Higher comprehensive mechanical properties: greater improvements have been made in mechanical properties such as tensile strength, flexural strength, flexural modulus, and impact strength;

[0042] (2) Higher CTI value: increase CTI from 320V to 660V;

[0043] (3) The PH value obtained from the corrosion test changed from acidic to neutral, indicating that the compound f...

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Abstract

The invention relates to a flame retardant glass fiber reinforced PA6 (Polyamide 6) / PPO(Poly-p-Phenylene Oxide) alloy composite and a preparation method thereof. The compound comprises the components by weight as follows: 20-41% of PA6, 20-41% of PPO, 0-10% of compatilizer, 0-15% of compound flame retardant master batch, 20-40% of glass fiber, 0.1-1% of antioxidant, and 0.1-1% of lubricating dispersant. The preparation method comprises the steps of weighing the components by weight percentage, placing the components in a high mixing machine to mix for 2-5 minutes; discharging; and then extruding and pelleting by a double-screw extruder, wherein the processing temperature is 245-270 DEG C and revolution of the screw is 30-40HZ. Compared with the prior art, the alloy composite provided by the invention has the advantages of high CTI (Comparative Tracking Index) value, low separation of flame retardant, no halogen and environment-friendliness, balanced comprehensive performance and the like, and can be widely applied to products in the field of electronics such as contactor, leakage protector and circuit breaker shell.

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 / PPO 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 / PPO 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L71/12C08L83/04C08K13/06C08K9/06C08K7/14C08K3/02C08K5/13B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 郭建鹏王尹杰段浩陈晓东
Owner SHANGHAI SUNNY
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