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High-glow-wire flame-retardant polypropylene material for fan heater casing and preparation method for same

A flame-retardant polypropylene and high-glow wire technology, which is applied in the field of polymer materials, can solve problems such as inability to test, achieve the effect of improving flame-retardant effect and overcoming low performance

Inactive Publication Date: 2012-07-25
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general V0 flame retardant PP can hardly pass the GWIT glow wire test at 750 °C

Method used

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  • High-glow-wire flame-retardant polypropylene material for fan heater casing and preparation method for same
  • High-glow-wire flame-retardant polypropylene material for fan heater casing and preparation method for same
  • High-glow-wire flame-retardant polypropylene material for fan heater casing and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The high glow wire flame-retardant polypropylene material used for the heater housing in this embodiment is composed of the following components in terms of weight percentage:

[0018] 56.4% polypropylene, 0.5% white mineral oil, 16% flame retardant, 6% first flame retardant synergist, 1% second flame retardant synergist, 19% filler, 0.6% dispersant, 0.4% lubricant , Antioxidant 0.1%.

[0019] Its preparation method is as follows:

[0020] Step 1, each component is weighed by the above-mentioned percentage by weight;

[0021] Step 2, mixing each component weighed evenly;

[0022] Step 3. Put the obtained mixed material in a twin-screw extruder, melt and react, extrude and granulate; the process conditions of the twin-screw extruder are: the temperature of the first zone is 180°C, the temperature of the second zone is 180°C, The temperature is 190°C, the temperature in the fourth zone is 190°C, the temperature in the fifth zone is 190°C, the temperature in the sixth z...

Embodiment 2

[0024] The high glow wire flame-retardant polypropylene material used for the heater housing in this embodiment is composed of the following components in terms of weight percentage:

[0025] 53.9% polypropylene, 0.6% white mineral oil, 17% flame retardant, 5% first flame retardant synergist, 2% second flame retardant synergist, 20% filler, 0.8% dispersant, 0.5% lubricant , Antioxidant 0.2%.

[0026] Its preparation method is as follows:

[0027] Step 1, each component is weighed by the above-mentioned percentage by weight;

[0028] Step 2, mixing each component weighed evenly;

[0029] Step 3. Place the obtained mixture in a twin-screw extruder, melt and react, and extrude to pelletize; The temperature is 190°C, the temperature in the fourth zone is 200°C, the temperature in the fifth zone is 200°C, the temperature in the sixth zone is 190°C, the temperature in the seventh zone is 180°C, the temperature in the eighth zone is 180°C, the screw speed is 370r / min; the vacuum d...

Embodiment 3

[0031] The high glow wire flame-retardant polypropylene material used for the heater housing in this embodiment is composed of the following components in terms of weight percentage:

[0032] 51.6% polypropylene, 0.6% white mineral oil, 18% flame retardant, 4% first flame retardant synergist, 3% second flame retardant synergist, 21% filler, 1% dispersant, 0.6% lubricant , Antioxidant 0.2%.

[0033] Its preparation method is as follows:

[0034] Step 1, each component is weighed by the above-mentioned percentage by weight;

[0035] Step 2, mixing each component weighed evenly;

[0036] Step 3. Place the obtained mixture in a twin-screw extruder, melt and react, and extrude to pelletize; The temperature is 210°C, the temperature in the fourth zone is 200°C, the temperature in the fifth zone is 190°C, the temperature in the sixth zone is 190°C, the temperature in the seventh zone is 180°C, the temperature in the eighth zone is 180°C, the screw speed is 380r / min; the vacuum deg...

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Abstract

The invention discloses a high-glow-wire flame-retardant polypropylene material for a fan heater casing and a preparation method for the same. Components of the polypropylene material comprise, in weight percentage, 49.2-56.4% of polypropylene, 0.5-0.7% of white mineral oil, 16-19% of flame retardant, 3-6% of first flame-retardant synergist, 1-4% of second flame-retardant synergist, 19-22% of filler, 0.6-1.2% of dispersing agent, 0.4-0.7% of lubricant and 0.1-0.2% of antioxidant. The high-glow-wire flame-retardant polypropylene material for the fan heater casing prepared by the method is modified based on a traditional class-V0 flame-retardant formula, so that flame-retardant effects are greatly enhanced, the shortcoming of low-glow-wire performance of the traditional formula is overcome, and the high-glow-wire flame-retardant polypropylene material can pass 850 DEG C GWIT (glow wire ignition temperature) and 960 DEG C GWFI (glow wire flammability index) glow-wire tests.

Description

[technical field] [0001] The invention relates to the field of polymer materials, in particular to a high-glow wire flame-retardant polypropylene material for a heater casing and a preparation method thereof. [Background technique] [0002] Polypropylene is one of the five general-purpose plastics. It is non-toxic, light in weight, corrosion-resistant, easy to process, low in production cost, and has good comprehensive mechanical properties. The highest, but it is a flammable material and has potential safety hazards. Therefore, it is necessary to modify it and endow it with flame retardant properties. At present, many home appliance shell materials are successively made of V0 flame-retardant PP. [0003] Heaters are generally made of fire-resistant materials, but in view of the fact that there have been too many fire cases caused by heaters in the past two years, the Australian Standards Committee has issued new standards, which have added many stricter requirements for th...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08K13/02C08K5/03C08K3/22C08K3/38C08K3/34C08K5/20B29C47/92B29C48/92
CPCB29C48/04
Inventor 徐东徐永杨秋会
Owner SHENZHEN KEJU NEW MATERIAL
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