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A high-efficiency flame-retardant polyolefin composition

A polyolefin and composition technology, applied in the field of high-efficiency flame-retardant polyolefin compositions, can solve problems such as flame-retardant failure, high cost, and limited application research, and achieve high-efficiency flame-retardant effects and high flame-retardant synergistic effects

Active Publication Date: 2018-07-03
ZHONGSHAN COMPLORD NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low thermal decomposition temperature of 2,3-dimethyl-2,3-diphenylbutane, it is only baked at 120°C for 3 days, and the flame retardancy will fail.
Household appliances such as chargers, refrigerators, and power strips will generate a lot of heat during use. In a long-term high-temperature environment, flame-retardant polypropylene materials are required to maintain long-lasting flame-retardant properties. 2,3-dimethyl -2,3-diphenylbutane as a flame retardant synergist flame retardant polypropylene does not meet this requirement
N-substituted alkoxy hindered amine flame retardant synergist NOR116 has strong high temperature resistance and can be used in high temperature baking flame retardant polypropylene, but the synthesis process of NOR116 is complicated, the yield is low, the cost is high, and the purchase procedure is complicated , which limits its applied research

Method used

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  • A high-efficiency flame-retardant polyolefin composition
  • A high-efficiency flame-retardant polyolefin composition
  • A high-efficiency flame-retardant polyolefin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The flame retardant polyolefin composition of this embodiment is made of the following raw materials in mass percentage: 97.5% polypropylene, 1% hypophosphite, 0.5% melamine hydrobromide, 0.5% flame retardant synergist, lubricant EBS 0.2 %, primary antioxidant 0.1%, auxiliary antioxidant 168 0.2%. The hypophosphite is aluminum hypophosphite, the main antioxidant is antioxidant 1010, the auxiliary antioxidant is antioxidant 168, and the flame retardant synergist is cumene and p-diiso The polymerization mixture that propylbenzene generation polymerization reaction generates, the preparation method of described polymerization mixture comprises the following steps:

[0027] Step 1. Add cumene and p-diisopropylbenzene into a three-necked flask, stir and heat up to 130°C under the protection of nitrogen atmosphere, and then drop di-tert-butyl peroxide into the flask at a rate of 0.75mL / min. Polymerization reaction is carried out in the mixture of the heated cumene and p-dicu...

Embodiment 2

[0044] The flame retardant polyolefin composition of this embodiment is made of the following raw materials in mass percentage: polypropylene 98.4%, hypophosphite 0.4%, melamine hydrobromide 0.4%, flame retardant synergist 0.5%, lubricant EBS 0.1 %, primary antioxidant 0.1%, auxiliary antioxidant 0.1%. The hypophosphite is magnesium hypophosphite, the main antioxidant is antioxidant 1010, the auxiliary antioxidant is antioxidant 168, and the flame retardant synergist is 4-methylcumene Polymerization mixture generated by polymerization reaction with p-diisopropylbenzene, the preparation method of said polymerization mixture comprises the following steps:

[0045] Step 1. Add 4-methylcumene and p-diisopropylbenzene into a three-necked flask, stir and heat up to 90°C under a nitrogen atmosphere, and then tert-butyl peroxidize at a rate of 1.5mL / min Hydrogen is added dropwise into the heated mixture of 4-methylcumene and p-diisopropylbenzene for polymerization reaction, and after...

Embodiment 3

[0049] The flame retardant polyolefin composition of this embodiment is made of the following raw materials in mass percentage: polypropylene 95.6%, hypophosphite 1.2%, melamine hydrobromide 0.8%, flame retardant synergist 1.5%, lubricant EBS 0.3 %, main antioxidant 0.3%, auxiliary antioxidant 0.3%. The hypophosphite is calcium hypophosphite. The main antioxidant is antioxidant 1010, the auxiliary antioxidant is antioxidant 168, and the flame retardant synergist is the polymerization reaction of 3-methylcumene and p-diisopropylbenzene The polymerization mixture of generation, the preparation method of described polymerization mixture comprises the following steps:

[0050] Step 1. Add 3-methylcumene and p-diisopropylbenzene into a three-necked flask, stir and heat up to 120°C under a nitrogen atmosphere, and then di-tert-butyl peroxidize at a rate of 1mL / min The mixture of 3-methyl isopropyl benzene and p-diisopropyl benzene is added dropwise to carry out polymerization reac...

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Abstract

The invention discloses an efficient flame retardant polyolefin composition. The efficient flame retardant polyolefin composition is prepared from the following raw materials in percentage by mass: 90.7-99% percent of polypropylene, 0.4-4 percent of hypophosphite, 0.1-2 percent of melamine hydrobromide, 0.2-2 percent of flame retardant synergist, 0.1-0.3 percent of lubricant EBS, 0.1-0.5 percent of main antioxidant and 0.1-0.5 percent of secondary antioxidant, wherein the flame retardant synergist is a polymeric mixture generated by a polymerization reaction between an isopropyl benzene compound and diisopropylbenzene. The efficient flame retardant polyolefin composition has efficient flame retardancy; in the raw materials, the hypophosphite is taken as a phosphorus-based flame retardant, the melamine hydrobromide is taken as a brominated flame retardant, and the polymeric mixture generated by the polymerization reaction between the isopropyl benzene compound and the diisopropylbenzene is taken as the flame retardant synergist; an added hypophosphite / melamine hydrobromide / flame retardant synergist flame retardant system had no influence on the mechanical property of the polypropylene.

Description

technical field [0001] The invention belongs to the technical field of high-efficiency flame-retardant polyolefin resins, and in particular relates to a high-efficiency flame-retardant polyolefin composition. Background technique [0002] As the fastest-growing general-purpose plastic, polypropylene is non-toxic, odorless, low-density, light, and has the advantages of easy processing, good electrical insulation, and chemical corrosion resistance. It is widely used in various fields of the national economy, but polypropylene It is a flammable material, which greatly limits its application, so it is particularly important to modify it for flame retardancy. Flame retardants currently used in polypropylene can be divided into halogenated flame retardants, metal hydroxides, silicon-based flame retardants, phosphorus-based flame retardants, and intumescent flame retardants. However, the flame retardant efficiency of halogenated flame retardants is directly proportional to the amo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/32C08K5/3492C08K5/134C08K5/526
CPCC08L23/12C08L2201/02C08L25/02C08K13/02C08K3/32C08K5/34928C08K5/1345C08K5/526
Inventor 张秀芹许梦兰梁顺全赖涛何燕岭
Owner ZHONGSHAN COMPLORD NEW MATERIALS CO LTD