Halogen-free and flame-retardant polypropylene material with high flame retardance and high oxygen index and preparation method of halogen-free and flame-retardant polypropylene material

A technology of flame retardant polypropylene and high oxygen index, which is applied in the field of high flame retardancy, high oxygen index halogen-free flame retardant polypropylene material and its preparation, can solve the problems of secondary pollution and achieve high oxygen index and optimized formula Design, improve the effect of oxygen index

Inactive Publication Date: 2018-05-29
CHONGQNG PRET NEW MATERIAL +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With decades of development, the output and application of polymer materials have shown a rapid growth trend. Polymer materials are used in almost every field of daily life, but polymer materials are flammable, and the use of polymer materials is widely used. The threat of fire is becoming more and more serious, and people's requirements for the flame retardancy of polymer materials are gradually increasing. Halogen flame retardants are widely used due to their high efficiency, low dosage, and low price. Carcinogens such as polybrominated diphenyl ethers are detected when the flame retardant system is burned, and the toxic gas produced when the halogen flame retardant system is burned will cause secondary pollution

Method used

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  • Halogen-free and flame-retardant polypropylene material with high flame retardance and high oxygen index and preparation method of halogen-free and flame-retardant polypropylene material
  • Halogen-free and flame-retardant polypropylene material with high flame retardance and high oxygen index and preparation method of halogen-free and flame-retardant polypropylene material
  • Halogen-free and flame-retardant polypropylene material with high flame retardance and high oxygen index and preparation method of halogen-free and flame-retardant polypropylene material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 3.97kg of PP M1200HS, 0.9kg of flame retardant FP-2200, 0.1kg of synergistic flame retardant Clay, 10g of antioxidants 1010 and 168, 10g of lubricant CaST and mix them evenly in a high-speed mixer to obtain a resin mixture ,spare;

[0041] The above-mentioned resin mixture is added into the twin-screw extruder (the diameter of the screw is 35mm, and the length-to-diameter ratio is L / D=40) through the main feeding port, and the temperature of each section of the twin-screw extruder is controlled (from the feeding mouth to nozzle outlet) at 160°C, 180°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, twin-screw extruder speed is 360r / min, the strips extruded through the die are cooled in a water tank, dried by a blast dryer, and then pelletized by a pelletizer to obtain the product.

[0042] The above materials were dried at 120° C. for 4 hours in a blast drying oven, and then injection molded into standard strips at an injection molding temperatur...

Embodiment 2

[0044] Weigh 3.82kg of PP P740J, 1.05kg of flame retardant FP-2200, 0.1kg of synergistic flame retardant Clay20, 10g of antioxidants 1010 and 168, 10g of lubricant CaST and mix them uniformly in a high-speed mixer to obtain a resin mixture for later use ;

[0045] The above-mentioned resin mixture is added into the twin-screw extruder (the diameter of the screw is 35mm, and the length-to-diameter ratio is L / D=40) through the main feeding port, and the temperature of each section of the twin-screw extruder is controlled (from feeding mouth to nozzle outlet) at 160°C, 180°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, twin-screw extruder speed is 360r / min, the strips extruded through the die are cooled in a water tank, dried by a blast dryer, and then pelletized by a pelletizer to obtain the product.

[0046] The above materials were dried at 120° C. for 4 hours in a blast drying oven, and then injection molded into standard strips at an injection molding te...

Embodiment 3

[0048] Weigh PP P740J 2.57kg, POE LC168 0.35kg, talcum powder 1.0kg, flame retardant FP-22000.95kg, synergistic combustion enhancer Clay20 0.1kg, antioxidant 1010 and 168 each 10g, lubricant CaST 10g in a high-speed mixer Mix well to get the resin mixture, set aside;

[0049] The above-mentioned resin mixture is added into the twin-screw extruder (the diameter of the screw is 35mm, and the length-to-diameter ratio is L / D=40) through the main feeding port, and the temperature of each section of the twin-screw extruder is controlled (from feeding mouth to nozzle outlet) at 160°C, 180°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, 190°C, twin-screw extruder speed is 360r / min, the strips extruded through the die are cooled in a water tank, dried by a blast dryer, and then pelletized by a pelletizer to obtain the product.

[0050] The above materials were dried at 120° C. for 4 hours in a blast drying oven, and then injection molded into standard strips at an injectio...

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Abstract

The invention discloses a halogen-free and flame-retardant polypropylene material with high flame retardance and high oxygen index and a preparation method of the halogen-free and flame-retardant polypropylene material. The halogen-free and flame-retardant polypropylene material comprises raw materials in percentage by weight as follows: 49.4%-79.4% of polypropylene, 0-30% of filler, 15%-25% of aflame retardant, 0-10% of a flexibilizer, 1%-3% of a flame retardant synergist and 0-1% of another auxiliary. Compared with the prior art, the halogen-free and flame-retardant polypropylene material has the following advantages: with adoption of a halogen-free and flame-retardant system, polypropylene reaches UL 94 V-0, a burning process is environmentally friendly, and toxic gas is not produced;by optimizing the formula design, glow wire testing meets GWFI:960 / 3.0 and GWIT:775 / 3.0, the flame retardant synergist is added, accordingly, the oxygen index of the flame-retardant polypropylene material is increased remarkably, and burning risks of the polypropylene material prepared with the method are reduced.

Description

technical field [0001] The invention relates to the design of the composite material formula, and the reasonable selection of polypropylene, flame retardants, fillers, and toughening agents to achieve high flame retardancy and high oxygen index of polypropylene materials, and to meet its requirements in the coil skeleton, Applications in electrical control boxes, electromagnetic water inlet valves, etc. Background technique [0002] With decades of development, the output and application of polymer materials have shown a rapid growth trend. Polymer materials are used in almost every field of daily life, but polymer materials are flammable, and the use of polymer materials is widely used. The threat of fire is becoming more and more serious, and people's requirements for the flame retardancy of polymer materials are gradually increasing. Halogen flame retardants are widely used due to their high efficiency, low dosage, and low price. Carcinogens such as polybrominated diphen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/08C08K13/02C08K5/00C08K3/34
CPCC08L23/12C08K5/0066C08K13/02C08L23/14C08L2201/02C08L2201/22C08L2203/20C08L23/0815C08K3/34
Inventor 王溢蔡青郑杭景田兰周文
Owner CHONGQNG PRET NEW MATERIAL
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