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A kind of flame-retardant reinforced nylon composite material and preparation method thereof

The technology of a nylon composite material and a hopper is applied in the field of flame retardant reinforced nylon composite material and its preparation, which can solve the problems of high cost and high price, and achieve the effect of low cost

Active Publication Date: 2017-11-17
SHENZHEN FUHENG PLASTICS PIGMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application for this invention replaces antimony compounds with organosilicon flame retardants, which to a certain extent reduces the large amount of gas produced during the synergistic effect of bromine and antimony, which meets the requirements of environmental protection, but the prices of some common organosilicon flame retardants on the market are generally higher , which makes the system costly

Method used

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  • A kind of flame-retardant reinforced nylon composite material and preparation method thereof
  • A kind of flame-retardant reinforced nylon composite material and preparation method thereof
  • A kind of flame-retardant reinforced nylon composite material and preparation method thereof

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preparation example Construction

[0030] The preparation method of flame-retardant reinforced nylon composite material of the present invention comprises the following steps:

[0031] Step 1. Weigh each component according to the above mass percentage, and dry the weighed PA66 resin at a temperature of 80-120°C for more than 6 hours, and dry the other components at a temperature of 60-80°C for more than 2 hours.

[0032] Step 2. Mix the dried PA66 resin, brominated flame retardant, compound flame retardant synergist, toughening agent, antioxidant, and processing aid in a high-speed mixer, and the time required for stirring is 10~ 15min.

[0033] Step 3. Add the mixed material in step 2 into the hopper of the twin-screw extruder, add the glass fiber from the side feeding port of the twin-screw extruder, melt, blend and extrude through the high-temperature extruder, and cool , air-dried and granulated.

[0034] Among them, the temperature setting of the twin-screw extruder is: Zone 1: 200-220°C; Zone 2: 210-23...

Embodiment 1

[0037] Dry the PA66 resin at a temperature of 80-120°C for more than 6 hours, and dry the other components at a temperature of 60-80°C for more than 2 hours. Take by weighing 43.2kg of PA66 resin, 10kg of decabromodiphenylethane, 5kg of anhydrous zinc borate, 8kg of nano-kaolin, 3kg of toughening agent, 0.2kg of antioxidant (wherein the main antioxidant 10100.1kg, auxiliary antioxidant 1680.1kg ), lubricant TAF0.5kg, coupling agent KH5500.1Kg; then stir in a high-speed mixer for 10min. Then add the mixed material into the hopper of the twin-screw extruder, and control the temperature of each section: Zone 1: 230°C; Zone 2: 235°C; Zone 3: 240°C; Zone 4: 250°C; Zone 5 : 260°C; Zone 6: 255°C; Zone 7: 250°C; Zone 8: 245°C; Head temperature: 240°C, screw speed 350r / min, add 30kg of glass fiber from the feeding port in the middle of the twin-screw, Melt blending extrusion, water cooling, air drying, pelletizing, drying, and finally packaging into bags is a low-cost 850°C glow wire ...

Embodiment 2

[0039] Dry the PA66 resin at a temperature of 80-120°C for more than 6 hours, and dry the other components at a temperature of 60-80°C for more than 2 hours. Take by weighing 42.2kg of PA66 resin, 12kg of decabromodiphenylethane, 5kg of anhydrous zinc borate, 7kg of nano-kaolin, 3kg of toughening agent, 0.2kg of antioxidant (wherein main antioxidant AT10100.1kg, auxiliary antioxidant AT1680 .1kg), lubricant TAF 0.5kg, coupling agent KH5500.1Kg; then stir in a high-speed mixer for 10 minutes. Then add the mixed material into the hopper of the twin-screw extruder, and control the temperature of each section: Zone 1: 230°C; Zone 2: 235°C; Zone 3: 240°C; Zone 4: 250°C; Zone 5 : 260°C; Zone 6: 255°C; Zone 7: 250°C; Zone 8: 245°C; Head temperature: 240°C, screw speed 350r / min, add 30kg of glass fiber from the feeding port in the middle of the twin-screw, Melt blending extrusion, water cooling, air drying, pelletizing, drying, and finally packaging into bags is a low-cost 850°C glow...

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Abstract

The invention discloses a flame-retardant reinforced nylon composite material and a preparation method thereof. The flame-retardant reinforced nylon composite material comprises the following components in percentage by weight: 30-45% of PA6630, 10-15% of brominated flame retardant, 12-16% of compound flame-retardant synergist, 3-5% of toughened modifier, 3-8% of compatibilizer, 0.2-0.6% of antioxidant, 20-40% of glass fiber, and 0.3-1% of processing aid; and the compound flame-retardant synergist is a compound of zinc borate substances and nanometer kaolin. The environment-friendly flame-retardant reinforced PA66 engineering plastic is prepared by compounding a current marketing common brominated flame retardant, zinc borate and kaolin, the flame-retardant property can meet the no firing requirements of UL 94 V-0 (3.2mm) and 850 DEG C glowing wire contact materials, the cost is lower compared with the halogen-free reinforced PA66 engineering plastic, the environment-friendly flame-retardant reinforced PA66 engineering plastic can be applied to plastic parts of a PTC heating body support, an igniter, a capacitor, a connecting plug and the like.

Description

[technical field] [0001] The invention relates to the technical field of modification of engineering plastics, in particular to a flame-retardant reinforced nylon composite material and a preparation method thereof. [Background technique] [0002] Polyamide (PA) 66 is widely used in automobiles, electronic appliances and other fields due to its excellent mechanical properties and molding properties. However, because electronic and electrical products are easy to burn during use and cause fires, therefore, while the materials are required to have good mechanical properties, they are also required to have good flame-retardant properties. In addition, with the implementation of the Australian standard on October 30, 2010, non-metallic materials are required to pass the 850°C glow wire test, and more and more countries such as Europe and the United States have also issued glow wire related standards. Although the commonly used PA66 modified system glass fiber (GF) / brominated fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L25/06C08K13/04C08K7/14C08K3/38C08K3/34C08K5/03C08K5/02B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08K2201/003C08K2201/011C08L77/06C08L2201/02C08L2205/03C08L2205/035C08L51/06C08K13/04C08K7/14C08K5/03C08K2003/387C08K3/346C08K5/20
Inventor 刘明张峰陈维维
Owner SHENZHEN FUHENG PLASTICS PIGMENT