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Environment-friendly and flame-retardant glass fiber reinforced PP (polypropylene)/PA (polyamide) 46 alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value and preparation method thereof

An alloy material and environmental protection technology, applied in the field of alloy materials, can solve problems such as high CTI value, and achieve the effect of balanced comprehensive performance and high tracking index

Inactive Publication Date: 2013-03-13
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report about a high CTI value, high GWIT value, environmentally friendly flame-retardant glass fiber reinforced PP / PA46 alloy material and its preparation method.

Method used

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  • Environment-friendly and flame-retardant glass fiber reinforced PP (polypropylene)/PA (polyamide) 46 alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value and preparation method thereof
  • Environment-friendly and flame-retardant glass fiber reinforced PP (polypropylene)/PA (polyamide) 46 alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value and preparation method thereof
  • Environment-friendly and flame-retardant glass fiber reinforced PP (polypropylene)/PA (polyamide) 46 alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh raw materials according to weight ratio: PP 25%, PA46 25.1%, compound flame retardant 12%, antimony trioxide 4%, glass fiber 30%, compatibilizer 3%, antioxidant 0.4%, oxidation 0.5% compound; put it into a high mixer and mix for 2-5 minutes, discharge the material, and then use a twin-screw extruder to extrude and granulate. Refer to Table 1 for the machine parameters.

Embodiment 2

[0042] Weigh raw materials by weight: PP 25%, PA46 23%, compound flame retardant 12%, antimony trioxide 4%, glass fiber 30%, compatibilizer 5%, antioxidant 0.4%, oxidation 0.6%; put it into a high mixer and mix for 2-5 minutes, discharge, and then extrude and granulate with a twin-screw extruder. Refer to Table 1 for the machine parameters.

[0043] It should be noted that the composite flame retardant described in Comparative Examples 1-5 and Examples 1-2 is composed of three components mixed, and its mass percentage is brominated polystyrene (BPS): 50% , magnesium hypophosphite: 25%, talcum powder: 25%. The glass fiber is an alkali-free glass fiber whose surface is treated with a silane coupling agent. The compatibilizer is commercially available maleic anhydride grafted PP.

[0044] Raw material formula (wt%) of table 2 comparative example 1-7 and embodiment 1-2

[0045]

Embodiment 3

[0046] Embodiment 3 performance test

[0047] According to the samples prepared in Comparative Examples 1-7 and Examples 1-2, the performance test comparison was carried out, using the ASTM standard, and the test performance comparison is shown in the table below.

[0048] Table 3 Comparative Examples 1-7 and Example 1-2 Sample Performance Test Comparison

[0049]

[0050] It can be seen from the above table that the present invention adopts a new flame retardant compound system. Compared with the traditional flame retardant system, the new compound system can increase the glow wire temperature of the material when the percentage of flame retardant is the same. 50 to 100°C, able to pass through 850°C glow wire. As the content of the new compound flame retardant increases, the glow wire temperature of the product also gradually increases. At the same time, the addition of glass fiber also significantly improves the glow wire of the material, the addition of a compatibiliz...

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Abstract

The invention relates to an environment-friendly and flame-retardant glass fiber reinforced PP (polypropylene) / PA (polyamide) 46 alloy material with high CTI (comparative tracking index) value and high GWIT (glow-wire ignition temperature) value. The alloy material is prepared from the following raw materials in percentage by weight: 23-41% of PP, 22-41% of PA46, 6-20% of compound flame retardant, 3-15% of antimony trioxide, 20-30% of glass fiber, 2-10% of compatilizer, 0.1-1% of antioxidant and 0.1-1% of oxide. The invention also provides a preparation method of the alloy material. The alloy material has high GWIT and high CTI, is environment-friendly, has balanced overall performances and can be widely applied to low-voltage electronic capacitor shells, load break switches, carbon brush brackets and moulded case circuit breakers.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to an environmentally friendly flame-retardant glass fiber reinforced PP / PA46 alloy material with high CTI value and high GWIT value and a preparation method thereof. Background technique [0002] Nylon (Nylon), Chinese name polyamide, English name Polyamide (referred to as PA), is a general term for thermoplastic resins containing repeated amide groups—[NHCO]—on the main molecular chain. Its name is determined by the specific number of carbon atoms in the synthetic monomer, such as: nylon-6, 66, 1010, 610. It has high crystallinity and obvious melting point; it has high surface hardness, wear resistance, small friction coefficient, and self-lubrication and noise reduction. It has good low temperature performance and has certain heat resistance (can be used below 100 degrees). Non-toxic, odorless, non-mildew, self-extinguishing, good weather resistance, but poor dyeing. Unrivaled p...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L77/02C08L25/04C08K13/06C08K9/06C08K7/14C08K3/22C08K3/32C08K3/34B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 郭建鹏孟诚铭
Owner SHANGHAI SUNNY
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