Environment-friendly flame retardant glass fiber reinforced polypropylene/ polyamide66 (PP/ PA66) alloy material with high comparative tracking index (CTI) value and high glow wire ignition temperature (GWIT) 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: 2015-02-25
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 / PA66 alloy material and its preparation method.

Method used

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  • Environment-friendly flame retardant glass fiber reinforced polypropylene/ polyamide66 (PP/ PA66) alloy material with high comparative tracking index (CTI) value and high glow wire ignition temperature (GWIT) value and preparation method thereof
  • Environment-friendly flame retardant glass fiber reinforced polypropylene/ polyamide66 (PP/ PA66) alloy material with high comparative tracking index (CTI) value and high glow wire ignition temperature (GWIT) value and preparation method thereof
  • Environment-friendly flame retardant glass fiber reinforced polypropylene/ polyamide66 (PP/ PA66) alloy material with high comparative tracking index (CTI) value and high glow wire ignition temperature (GWIT) value and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Raw materials are weighed according to weight ratio: PP 25%, PA66 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] Raw materials are weighed according to weight ratio: PP 25%, PA66 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 compatib...

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Abstract

The invention discloses an environment-friendly flame retardant glass fiber reinforced polypropylene / polyamide66 (PP / PA66) alloy material with high comparative tracking index (CTI) value and high glow wire ignition temperature (GWIT) value, which comprises the raw material components by weight percent: 23-41% of PP, 22-41% of PA66, 6-20% of compound fire retardant, 3-15% of antimonous oxide, 20-30% of glass fiber, 2-10% of compatilizer, 0.1-1% of antioxidant and 0.1-1% of oxide. The invention also discloses a preparation method of the environment-friendly flame retardant glass fiber reinforced PP / PA66 alloy material with high CTI value and high GWIT value. The environment-friendly flame retardant glass fiber reinforced PP / PA66 alloy material with high CTI value and high GWIT value has the advantages of being higher in GWIT and CTI, environment-friendly and balanced in combination properties, thus being widely applied to a low-voltage electronic capacitor shell, a load break switch, a carbon brush bracket and a moulded case circuit breaker.

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 / PA66 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. [0003] Mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L77/06C08K13/06C08K3/22C08K7/14C08K3/32C08K3/34
Inventor 郭建鹏齐阳成
Owner SHANGHAI SUNNY
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