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Halogen-free red phosphorus flame retardant nylon with high toughness and preparation method of nylon

A technology of flame-retardant nylon and high toughness, which is applied in the field of halogen-free high-toughness red phosphorus flame-retardant nylon and its preparation, can solve the problems that nylon materials cannot meet high flame retardancy, high toughness and halogen-free green environmental protection at the same time, and achieve Improve oxidation resistance, good impact resistance, and reduce friction coefficient

Inactive Publication Date: 2014-09-03
温州科力塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a halogen-free high-toughness red phosphorus flame-retardant nylon for making explosion-proof equipment and its preparation method, which solves the problem that the existing nylon materials used for making explosion-proof equipment cannot meet the high flame-retardant requirements at the same time. Insufficiency, high toughness and halogen-free green environmental protection

Method used

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  • Halogen-free red phosphorus flame retardant nylon with high toughness and preparation method of nylon
  • Halogen-free red phosphorus flame retardant nylon with high toughness and preparation method of nylon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Use the following raw materials in weight ratio:

[0023] The ratio of polyamide 66 and polyamide 6 is 1:1 (relative viscosity is 2.7) 75.2%;

[0024] Ordinary red phosphorus masterbatch 8%;

[0025] Toughening agent (maleic anhydride grafted POE) 16%;

[0026] Antioxidant (hindered phenols) 0.3%;

[0027] Lubricating and dispersing agent (silicone powder) 0.5%;

[0028] Put the above-mentioned raw materials with good weight ratio into the high mixer and fully mix for 2-5 minutes, and then put the mixed materials into the extruder from the main feed port of the twin-screw extruder, and then melt and extrude, Water-cooled, air-dried, pelletized, and then prepared high-toughness red phosphorus flame-retardant nylon. The temperature of each zone of the twin-screw extruder is controlled at 220-280℃, and the screw speed is controlled at 300-400RPM.

Embodiment 2

[0030] Use the following raw materials in weight ratio:

[0031] The ratio of polyamide 66 and polyamide 6 is 1:1 (relative viscosity is 2.7) 72.2%;

[0032] Ordinary red phosphorus masterbatch 9%;

[0033] Toughening agent (maleic anhydride grafted POE) 18%;

[0034] Antioxidant (hindered phenols) 0.3%;

[0035] Lubricating and dispersing agent (silicone powder) 0.5%;

[0036] Put the above-mentioned raw materials with good weight ratio into the high mixer and fully mix for 2-5 minutes, and then put the mixed materials into the extruder from the main feed port of the twin-screw extruder, and then melt and extrude, Water-cooled, air-dried, pelletized, and then prepared high-toughness red phosphorus flame-retardant nylon. The temperature of each zone of the twin-screw extruder is controlled at 220-280℃, and the screw speed is controlled at 300-400RPM.

Embodiment 3

[0038] Use the following raw materials in weight ratio:

[0039] The ratio of polyamide 66 and polyamide 6 is 1:1 (relative viscosity is 2.7) 75.2%;

[0040] Compound red phosphorus masterbatch 8%;

[0041] Toughening agent (maleic anhydride grafted POE) 16%;

[0042] Antioxidant (hindered phenols) 0.3%;

[0043] Lubricating and dispersing agent (silicone powder) 0.5%;

[0044] Put the above-mentioned raw materials with good weight ratio into the high mixer and fully mix for 2-5 minutes, and then put the mixed materials into the extruder from the main feed port of the twin-screw extruder, and then melt and extrude, Water-cooled, air-dried, pelletized, and then prepared high-toughness red phosphorus flame-retardant nylon. The temperature of each zone of the twin-screw extruder is controlled at 220-280℃, and the screw speed is controlled at 300-400RPM.

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Abstract

The invention relates to halogen-free red phosphorus flame retardant nylon with high toughness for manufacturing explosion-proof equipment and a preparation method of the nylon. The nylon comprises 50-85% of thermoplastic polyamide resin, 5-30% of compound red phosphorus masterbatch, 10-30% of a flexibilizer, 0.1-1% of an antioxidant and 0.1-1% of a lubricating dispersant. The preparation method comprises the following steps: firstly, putting the components in parts by weight in a high mixer to be mixed for 2-5 minutes; then, putting the mixed materials from a main feed inlet of a twin-screw extruder to the extruder; carrying melt extrusion and prilling; and then preparing the red phosphorus flame retardant nylon with high toughness, wherein the temperatures of the regions of the twin-screw extruder are controlled in a range of 220-280 DEG C and the screw speed is controlled at 300-400RPM. By replacing common red phosphorus masterbatch with the compound red phosphorus masterbatch and adding the flexibilizer, the nylon material prepared satisfies the demand of high flame retardance, high toughness, no halogen and environment friendliness, and is more suitable for manufacturing explosion-proof equipment.

Description

Technical field [0001] The invention relates to the field of nylon materials, in particular to a halogen-free high-toughness red phosphorus flame-retardant nylon used for making explosion-proof equipment and a preparation method thereof. Background technique [0002] In recent years, my country’s economy has developed rapidly and people’s living standards have also been greatly improved, but at the same time various riots have also occurred from time to time, and various safety and explosion-proof equipment are indispensable when police officers enforce law and order. The anti-riot equipment is composed of different accessory modules such as helmet, breastplate, crotch guard, arm guard, leg guard, and foot guard. It can be used by the police to deal with sudden group violence incidents, protect their personal safety, and improve combat effectiveness. At present, the modules of the anti-riot equipment on the market are mostly composed of modified HDPE or brominated flame-retardan...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L77/06C08L77/02C08L51/06C08L83/04C08K13/06C08K9/10C08K3/02C08K5/13B29B9/06B29C47/92B29C48/92
CPCB29C47/0011B29C47/92B29B9/06B29C48/92B29C2948/9258B29C2948/92704C08J3/226C08J2377/02C08J2377/06C08L77/02C08L77/06C08L2201/02C08L2201/22C08L2205/02C08L2205/035C08L51/06C08L83/04C08K9/10C08K2003/026C08K5/13B29C48/04B29C48/40B29C2948/9259
Inventor 刘志马璐宋航
Owner 温州科力塑业有限公司
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