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Polyethylene, phosphaphenanthrene and polyphosphazene double-base synergistic flame-retardant composite material, and preparation method and application thereof

A technology of flame-retardant composite materials and polyethylene, which is applied in the field of polyethylene composite materials, can solve problems such as poor compatibility and decreased mechanical and mechanical properties, and achieve strong heat and oxygen insulation capabilities, strong char formation capabilities, and excellent interface compatibility sexual effect

Inactive Publication Date: 2020-07-03
GUIZHOU MINZU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problem of poor compatibility between DOPO flame retardants and polymer matrix or reinforcing materials in the above background technology, the present invention provides a polymer Ethylene, phosphaphenanthrene and polyphosphazene double base synergistic flame retardant composite material and its preparation method and application

Method used

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  • Polyethylene, phosphaphenanthrene and polyphosphazene double-base synergistic flame-retardant composite material, and preparation method and application thereof
  • Polyethylene, phosphaphenanthrene and polyphosphazene double-base synergistic flame-retardant composite material, and preparation method and application thereof
  • Polyethylene, phosphaphenanthrene and polyphosphazene double-base synergistic flame-retardant composite material, and preparation method and application thereof

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Embodiment 1

[0031] A preparation method of polyethylene, phosphaphenanthrene and polyphosphazene double-base synergistic flame-retardant composite material, comprising the following steps:

[0032] S1. Dry 90kg of polyethylene, 2.5kg of vapor phase flame retardant, 2.5kg of condensed phase flame retardant, 5kg of compatibilizer and 0.5kg of antioxidant after drying at 80°C and mix to obtain a mixture. The drying time is 1-4 hours, until there is no obvious moisture. It is worth noting that the polyethylene can be high-density polyethylene, low-density polyethylene or linear low-density polyethylene. This time, the polyethylene was purchased from high-density polyethylene from Dongguan Huangjiang Yunshitong Plastic Business Department.

[0033] S2. The mixture in step S1 is blended and extruded through a twin-screw extruder at 190-210 ° C, and then cooled to room temperature, followed by traction and pelletizing to obtain polyethylene, phosphaphenanthrene and polyphosphorus Nitrile double...

Embodiment 2

[0041] The difference with embodiment 1 is: in step S1, gas phase flame retardant gets 1.5kg, and condensed phase flame retardant gets 1.5kg. The compatibilizer is polyethylene grafted with glycidyl methacrylate.

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Abstract

The invention belongs to the field of polyethylene composite materials, and particularly relates to a polyethylene, phosphaphenanthrene and polyphosphazene double-base synergistic flame-retardant composite material, and a preparation method and an application thereof. The polyethylene, phosphaphenanthrene and polyphosphazene double-base synergistic flame-retardant composite material comprises, bymass, 80-95 parts of polyethylene, 2-5 parts of a gas-phase flame retardant, 2-5 parts of a condensed-phase flame retardant, 5-10 parts of a compatibilizer and 0.5 part of an antioxidant. Due to the synergistic effect of the gas-phase flame retardant and the condensed-phase flame retardant, the gas-phase flame retardant is mainly used for gas-phase flame retardance, and the condensed-phase flame retardance is weak. The condensed phase flame retardant is mainly used as a condensed phase, so that the gas-phase flame retardant is made up; and the gas-phase flame retardant, the liquid-phase flameretardant and the polyethylene are mixed, so the flame-retardant composite material has more excellent flame retardance and excellent interfacial compatibility, and the mechanical properties of the polymer flame-retardant material are not reduced and are also enhanced.

Description

technical field [0001] The invention belongs to the field of polyethylene composite materials, and in particular relates to a double-base synergistic flame-retardant composite material of polyethylene, phosphaphenanthrene and polyphosphazene, and a preparation method and application thereof. Background technique [0002] Polyethylene (POLYETHYLENE, PE) is a polymer formed by the polymerization of ethylene. It is an odorless, tasteless and non-toxic flammable white powder. Widely used in wire and cable sheaths, pipes, various hollow products, injection molding products, fibers, agriculture, packaging, electrical and electronic, machinery, automobiles and daily sundries, etc. However, polyethylene is easy to burn, and the droplet phenomenon is serious when burning, which limits the use of polyethylene in the field of products requiring flame retardancy. Therefore, it is very necessary to carry out flame-retardant modification of polyethylene. The halogen-containing flame reta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L85/02C08L51/06C08L23/08C08L51/00C08K5/5397C08K5/5398
CPCC08L23/06C08L2201/02C08L2205/08C08L2205/03C08L2312/00C08L2207/062C08L85/02C08L51/06C08K5/5397
Inventor 张道海罗迎春田琴宝冬梅谭芳何敏秦舒浩左晓玲于杰
Owner GUIZHOU MINZU UNIV
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