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Flame-retardant high-strength polyethylene material based on ultraviolet crosslinking and preparation method thereof

A high-strength polyethylene and ultraviolet technology, applied in the field of polyethylene materials, can solve problems such as reducing the mechanical properties of polyethylene, and achieve the effects of excellent heat resistance stability and high transparency

Inactive Publication Date: 2020-12-08
韩忠凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, in order to improve the flame retardant performance of cross-linked polyethylene, flame retardants are generally added to it, and inorganic flame retardants are the most common one, but the amount of inorganic flame retardants added in the prior art is relatively large, directly Adding to polyethylene will significantly reduce the mechanical properties of polyethylene

Method used

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  • Flame-retardant high-strength polyethylene material based on ultraviolet crosslinking and preparation method thereof

Examples

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Effect test

Embodiment 1

[0030] A method for preparing a flame-retardant high-strength polyethylene material based on ultraviolet crosslinking, comprising the following steps:

[0031] Step 1: Prepare materials;

[0032] Step 2: Prepare modified magnesium oxide: Mix magnesium nitrate hexahydrate, aluminum nitrate nonahydrate and citric acid, dissolve in distilled water, then add lithium salt, stir for 2 minutes, continue to add template agent, stir for 2 hours at 80°C water bath temperature, After the reaction, place it in a muffle furnace for heat treatment 3, the heat treatment temperature is 160°C, and then place it for calcination at 500°C to obtain modified magnesium oxide; wherein the lithium salt is lithium nitrate.

[0033] Step 3: Mix calcium phosphate, modified magnesium oxide, antimony oxide and zinc oxide, dissolve in absolute ethanol, stir for 20 minutes, and then dry at 80°C for 24 hours. After drying, put it in a mold and press for molding. The pressing pressure is 150MPa , pressed and...

Embodiment 2

[0038] A method for preparing a flame-retardant high-strength polyethylene material based on ultraviolet crosslinking, comprising the following steps:

[0039] Step 1: Prepare materials;

[0040] Step 2: Prepare modified magnesium oxide: Mix magnesium nitrate hexahydrate, aluminum nitrate nonahydrate and citric acid, dissolve in distilled water, then add lithium salt, stir for 2.5 minutes, continue to add template agent, stir for 1.5 minutes at 82°C water bath temperature h, heat treatment in a muffle furnace for 3.5 hours after the reaction, at a temperature of 155°C, and then calcined at 550°C to obtain modified magnesium oxide; wherein the lithium salt is lithium nitrate.

[0041] Step 3: Mix calcium phosphate, modified magnesium oxide, antimony oxide and zinc oxide, dissolve in absolute ethanol, stir for 25 minutes, and then dry at 85°C for 22 hours. After drying, place it in a mold and press for molding. The pressing pressure is 151MPa , after pressing, place it at 1325°...

Embodiment 3

[0046] A method for preparing a flame-retardant high-strength polyethylene material based on ultraviolet crosslinking, comprising the following steps:

[0047] Step 1: Prepare materials;

[0048] Step 2: Prepare modified magnesium oxide: Mix magnesium nitrate hexahydrate, aluminum nitrate nonahydrate and citric acid, dissolve in distilled water, then add lithium salt, stir for 3 minutes, continue to add template agent, stir for 1 hour at 85°C water bath temperature, After the reaction, heat treatment in a muffle furnace for 4 hours at a temperature of 150°C, and then calcined at 600°C to obtain modified magnesium oxide; wherein the lithium salt is lithium nitrate.

[0049] Step 3: Mix calcium phosphate, modified magnesium oxide, antimony oxide and zinc oxide, dissolve in absolute ethanol, stir for 30 minutes, and then dry at 90°C for 20 hours. After drying, place it in a mold and press for molding. The pressing pressure is 152MPa , pressed and placed at 1350°C for sintering, ...

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Abstract

The invention discloses a flame-retardant high-strength polyethylene material based on ultraviolet crosslinking and a preparation method thereof. The high-strength polyethylene material comprises thefollowing raw materials by weight: 80-90 parts of polyethylene, 2-5 parts of a photoinitiator, 3-6 parts of a crosslinking agent, 1-2 parts of an antioxidant, 10-15 parts of polyimide resin, 20-30 parts of a composite flame retardant, and 15-20 parts of epoxy resin. The composite flame retardant is mainly prepared by compounding modified magnesium oxide, calcium phosphate, antimony oxide and zincoxide. The invention discloses a flame-retardant high-strength polyethylene material based on ultraviolet crosslinking and a preparation method thereof, the flame-retardant high-strength polyethylenematerial is reasonable in process design and proper in component proportion, the flame-retardant performance of the product is improved through the synergistic effect of inorganic flame retardants calcium phosphate, modified magnesium oxide, antimony oxide and zinc oxide, and meanwhile, the flame-retardant high-strength polyethylene material is compounded and then added into a polyethylene matrix.The interfacial compatibility is improved, and the prepared polyethylene material has excellent mechanical property and flame retardant property and higher practicability.

Description

technical field [0001] The invention relates to the field of polyethylene materials, in particular to a flame-retardant high-strength polyethylene material based on ultraviolet crosslinking and a preparation method thereof. Background technique [0002] Polyethylene (PE for short) is a thermoplastic resin obtained by polymerization of ethylene. Polyethylene (PE) cross-linking technology is one of the important means to improve its material properties. The cross-linked modified PE can make its properties It has been greatly improved, not only significantly improving the comprehensive properties of PE, such as mechanical properties, environmental stress cracking resistance, chemical corrosion resistance, creep resistance and electrical properties, but also significantly improving the temperature resistance level, which can make PE The heat-resistant temperature of PE has been increased from 70°C to over 100°C, thus greatly broadening the application field of PE. [0003] Cros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L79/08C08L63/00C08K13/06C08K3/22C08K3/32C08J3/28C08J3/24
CPCC08J3/246C08J3/28C08J2323/06C08J2463/00C08J2479/08C08K2003/222C08K2003/2296C08K2003/325C08L23/06C08L2201/02C08L2312/06C08L79/08C08L63/00C08K13/06C08K3/22C08K3/32C08K3/2279
Inventor 韩忠凯
Owner 韩忠凯
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