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Flame-retarding and smoke-suppressing polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, used in the field of flame retardant composite materials, can solve the problems of unreachable heat release, low mechanical properties of polypropylene, and degradation of plastic properties, avoiding the release of heat and airflow through the carbon layer, improving Effect of char formation rate, enhanced stability and strength

Active Publication Date: 2018-09-18
DONGGUAN JISHUO IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flame retardant component of this technical solution mainly uses red phosphorus. Red phosphorus is easy to turn into phosphoric acid in a high temperature and high humidity environment, resulting in a decrease in the performance of plastics, and phosphoric acid is conductive, and it is easy to turn insulating plastic into conductive plastic. It is used on railways. less secure
And the modified polypropylene is still low in mechanical properties, and the heat release cannot reach the level of HL3

Method used

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  • Flame-retarding and smoke-suppressing polypropylene composite material and preparation method thereof
  • Flame-retarding and smoke-suppressing polypropylene composite material and preparation method thereof
  • Flame-retarding and smoke-suppressing polypropylene composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0036] A flame-retardant and smoke-suppressing polypropylene composite material, comprising the following raw materials in parts by weight:

[0037]

[0038]

[0039] The preparation method of the synergistic flame retardant microspheres comprises the following steps:

[0040] A. After mixing 4.5 parts by weight of zinc stannate hexahydrate, 6 parts by weight of tin tetrachloride pentahydrate and 2 parts by weight of nanocellulose, add an appropriate amount of water, carry out ultrasonic dispersion, heat up for hydrothermal reaction, and take out Precipitation, repeated washing with deionized water, drying, and roasting to obtain porous zinc stannate;

[0041] B. At a temperature of 80°C, dissolve microcrystalline cellulose in 1-methyl 3-butylimidazolium chloride ionic liquid at a mass ratio of 7:100 to form a microcrystalline cellulose solution, and then add the obtained product in step A Porous zinc stannate obtains a suspension, wherein the consumption of the porous zi...

Embodiment 2

[0054] A flame-retardant and smoke-suppressing polypropylene composite material, comprising the following raw materials in parts by weight:

[0055]

[0056] The preparation method of the synergistic flame retardant microspheres comprises the following steps:

[0057] A. After mixing 3 parts by weight of zinc stannate hexahydrate, 4 parts by weight of tin tetrachloride pentahydrate and 1 part by weight of nanocellulose, add an appropriate amount of water, carry out ultrasonic dispersion, heat up for hydrothermal reaction, and take out Precipitation, repeated washing with deionized water, drying, and roasting to obtain porous zinc stannate;

[0058] B. At a temperature of 70°C, dissolve microcrystalline cellulose in 1-methyl 3-butylimidazolium chloride ionic liquid in a mass ratio of 4:100 to form a microcrystalline cellulose solution, and then add the obtained product in step A Porous zinc stannate obtains a suspension, wherein the consumption of the porous zinc stannate i...

Embodiment 3

[0071] A flame-retardant and smoke-suppressing polypropylene composite material, comprising the following raw materials in parts by weight:

[0072]

[0073] The preparation method of the synergistic flame retardant microspheres comprises the following steps:

[0074] A. After mixing 6 parts by weight of zinc stannate hexahydrate, 8 parts by weight of tin tetrachloride pentahydrate and 3 parts by weight of nanocellulose, add an appropriate amount of water, carry out ultrasonic dispersion, heat up for hydrothermal reaction, and take out Precipitation, repeated washing with deionized water, drying, and roasting to obtain porous zinc stannate;

[0075] B. At a temperature of 90°C, dissolve microcrystalline cellulose in 1-methyl 3-butyl imidazolium chloride ionic liquid in a mass ratio of 10:100 to form a microcrystalline cellulose solution, and then add the obtained product in step A Porous zinc stannate obtains a suspension, wherein the consumption of the porous zinc stannat...

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Abstract

The invention relates to the technical field of polypropylene, and concretely relates to a flame-retarding and smoke-suppressing polypropylene composite material and a preparation method thereof. Thepolypropylene composite material comprises polypropylene, a halogen-free flame retardant, a synergistic flame-retardant microsphere, an antioxidant and a lubricant, the synergistic flame-retardant microsphere is a core-shell microsphere, the core is porous zinc stannate, and the shell is microcrystalline cellulose. HL3 grade standards for heat release, smoke density and toxicity in EN45545-2 R6 are as follows: the heat release amount is not more than 60 Kw / m<2>, the Ds (4) value is not more than 150, the VOF (4) value is not more than 300, and the CITG value is not more than 0.75. The polypropylene composite material can meet the above standards , and can greatly increase the safety when applied to railways, and the participation of cellulose makes the tensile strength of polypropylene blend resin improved. In addition, the polypropylene composite material can also be blended and modified with other plastics to improve the application versatility.

Description

technical field [0001] The invention relates to the technical field of flame-retardant composite materials, in particular to a flame-retardant and smoke-suppressing polypropylene composite material and a preparation method thereof. Background technique [0002] Railway transportation is a land transportation method in which locomotives pull train vehicles on two parallel rails. The traditional way is to travel on steel wheels, but in a broad sense, railway transportation still includes non-steel wheel travel methods such as maglev trains, cable cars, and cableways, or rail transportation. The rails provide an extremely smooth and hard medium on which the train wheels roll with minimal friction, making it more comfortable for people on it, and it saves energy. If properly configured, rail transport can save 50 to 70 percent of energy compared to road transport for the same weight. Moreover, the rails can evenly disperse the weight of the train, so that the load-carrying cap...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L1/04C08K13/06C08K9/10C08K7/24C08K3/32C08K5/3492C08K3/02C08K3/22
CPCC08K2003/026C08K2003/2224C08K2003/323C08K2201/006C08L23/12C08L2201/02C08L2205/03C08L1/04C08K13/06C08K9/10C08K7/24C08K3/32C08K5/34922C08K3/02C08K3/22
Inventor 王勇
Owner DONGGUAN JISHUO IND CO LTD
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