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Polypropylene flame-retardant composite material containing trinity flame retardant and preparation method thereof

A flame retardant composite material and a three-in-one technology, applied in the field of flame retardant polypropylene composite materials, can solve the problems of insufficient flame retardant performance, large amount of addition, low flame retardant efficiency, etc. The effect of improving heat resistance

Inactive Publication Date: 2020-05-29
SHUNDE POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, the intumescent flame retardants used still have the following disadvantages: 1. The flame retardant efficiency is not high, and the addition amount is relatively large; 2) Especially the element ratio of the single-molecule flame retardant is unreasonable, and the flame retardant performance cannot be fully exerted ;3) The flame retardant component contains small molecular substances, which are easy to ooze out and have poor durability

Method used

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  • Polypropylene flame-retardant composite material containing trinity flame retardant and preparation method thereof
  • Polypropylene flame-retardant composite material containing trinity flame retardant and preparation method thereof
  • Polypropylene flame-retardant composite material containing trinity flame retardant and preparation method thereof

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Effect test

Embodiment 1

[0023] It is a preparation method of polypropylene flame retardant composite material containing "Trinity" flame retardant, adding 3.345Kg polypropylene pellets and 0.15kg polypropylene wax into high-speed dispersant and premixing for 2 minutes, high-speed dispersion The speed of the machine is 800 rpm, and then accurately weigh 1.5kg of "Trinity" flame retardant (FR1) and 0.005kg of antioxidant (1010) into the above mixer and mix for 15 minutes to obtain intumescent flame retardant Finally, extrude the obtained intumescent flame-retardant mixture in a twin-screw extruder, cool it, and granulate it to obtain a polypropylene flame-retardant composite material containing a "trinity" flame retardant. Wherein, the temperature of each zone of the twin-screw extruder is set at 150-200°C.

[0024] The oxygen index of the obtained polypropylene flame-retardant composite material containing the "Trinity" flame retardant is 32.1%, and the UL-94 test reaches the V-0 level (1.6 mm). In t...

Embodiment 2

[0027] It is a preparation method of polypropylene flame retardant composite material containing "trinity" flame retardant, adding 3.345Kg polypropylene pellets and 0.15kg polyethylene wax into high-speed dispersant and premixing for 3 minutes, high-speed dispersion The speed of the machine is 1000 rpm, and then accurately weigh 0.75kg of ammonium polyphosphate (APP), 0.75kg of "Trinity" flame retardant (FR2) and 0.005kg of antioxidant (1010) to add to the above Mix in a mixer for 20 minutes to obtain an intumescent flame retardant mixture, and finally put the obtained intumescent flame retardant mixture in a twin-screw extruder to extrude, cool, and granulate to obtain a "trinity" flame retardant. Polypropylene flame retardant composite. Wherein, the temperature of each zone of the twin-screw extruder is set at 160-210°C.

[0028] The oxygen index of the obtained polypropylene flame-retardant composite material containing the "Trinity" flame retardant is 33.5%, and the UL-94...

Embodiment 3

[0031] It is a preparation method of polypropylene flame-retardant composite material containing "trinity" flame retardant. First, 2.89Kg of polypropylene pellets and 0.10k of N,N-ethylene bisstearic acid amide (EBS) are added Pre-mix in the high-speed mixer for 5 minutes, the speed of the high-speed disperser is 1200 rpm, and then accurately weigh 1.5kg of melamine polyphosphate (MPP), 0.5kg of "Trinity" flame retardant (FR3) and Add 0.010kg of antioxidant (168) into a high-speed mixer and pre-mix for 10 minutes to obtain an intumescent flame-retardant mixture. Finally, extrude the intumescent flame-retardant mixture with a twin-screw extruder, cool it, and granulate it. The polypropylene flame retardant composite material containing "trinity" flame retardant can be obtained. Among them, the temperature of each zone of the twin-screw extruder is 170-210°C.

[0032] The oxygen index of the obtained polypropylene flame-retardant composite material containing the "Trinity" flam...

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Abstract

The invention relates to a polypropylene flame-retardant composite material containing a trinity flame retardant and a preparation method thereof. The method comprises the steps of: inputting 55-85% of polypropylene and 0.1-5% of a lubricant into a high-speed mixer for high-speed dispersion for 2-5 minutes to obtain a mixture; mixing the mixture with 14.5-40% of intumescent flame retardant and 0.1-0.5% of antioxidant for 5 to 20 minutes to obtain an intumescent flame-retardant mixture; and extruding and granulating the intumescent flame-retardant mixture by using a double-screw extruder or uniformly mixing by using a double-roller mixing mill to obtain the polypropylene flame-retardant composite material containing the trinity flame retardant, and setting the temperature of each region ofthe double-screw extruder or the temperature of each region of the double-roller mixing mill to be 150-220 DEG C. The heat resistance and the water resistance of the flame retardant are improved, andmeanwhile, through the structural design and adjustment of the flame retardant, the flame retardant efficiency is improved, and the water solubility and the mobility are reduced.

Description

technical field [0001] The invention relates to the technical field of flame-retardant polypropylene composite materials, in particular to a polypropylene flame-retardant composite material containing a "trinity" flame retardant and a preparation method thereof. Background technique [0002] Polypropylene (PP), as a general-purpose plastic with excellent comprehensive performance and cost-effectiveness, is widely used in household appliances, electronics, building materials, automobile industry and packaging materials. However, polypropylene is flammable, its oxygen index is only 17-18%, and a large number of molten droplets are produced during combustion, which is a great fire hazard, which limits the use of polypropylene in occasions with flame retardancy requirements. Therefore, it is very necessary to modify the flame retardant of polypropylene. [0003] The more commonly used and economical method in industry is to use additive flame retardants. The flame retardants m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L85/02C08K3/32C08K5/3492C08K13/02C08K5/5399C08K5/527C08K5/5373C08K5/3462
CPCC08K2003/323C08L23/12C08L2201/02C08L2201/08C08L85/02C08K3/32C08K5/34928C08K13/02C08K5/5399C08K5/527C08K5/5373C08K5/3462
Inventor 冯才敏黄健光姜佳丽练翠霞农彦彦李彦萍黄翠虹马彦彭建兵梁敏仪郑小洁张浥琨李佳璐何卓蓓吴海燕王雅诗黄志鑫陈世鑫麦绮文
Owner SHUNDE POLYTECHNIC