Polyethylene composition for hazardous waste storage containers

A technology for storage containers and polyethylene, which is applied in the field of polyethylene compositions for hazardous waste storage containers, and can solve problems such as poor impact resistance, hidden safety hazards for storing nuclear waste, and easy brittleness and rupture.

Inactive Publication Date: 2020-08-11
康派新材料科技(扬州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although polyethylene high-integral containers have good physical and mechanical properties, chemical stability, corrosion resistance, and electrical insulation at room temperature, they have poor impact resistance at low temperatures of -40°C, that is, in extremely cold climates. It is easy to be brittle and broken, and there is a huge safety hazard in storing nuclear waste

Method used

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  • Polyethylene composition for hazardous waste storage containers
  • Polyethylene composition for hazardous waste storage containers
  • Polyethylene composition for hazardous waste storage containers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The polyethylene composition for hazardous waste storage containers includes the following components:

[0028]

[0029]

[0030]Wherein, the density of high-density polyethylene is 0.940g / ml, and the melt flow rate is 5g / 10min; the density of the linear low-density polyethylene is 0.926g / ml, and the melt flow rate is 6g / 10min; the high pressure The density of low-density polyethylene is 0.926 / ml, and the melt flow rate is 20g / 10min.

[0031] The polyethylene composition for hazardous waste storage containers can be prepared by one of the following two preparation methods.

[0032] The first preparation method: first, weigh the components of the above-mentioned parts by mass respectively; secondly, use a mill to grind high-density polyethylene, linear low-density polyethylene, high-pressure low-density polyethylene and silicone rubber into particle sizes 35-100 mesh powder particles, the four kinds of powder particles are uniformly mixed; then, the mixed powder a...

Embodiment 2

[0035] The polyethylene composition for hazardous waste storage containers includes the following components:

[0036]

[0037]

[0038] Wherein, the density of high-density polyethylene is 0.945g / ml, and the melt flow rate is 7g / 10min; the density of the linear low-density polyethylene is 0.930g / ml, and the melt flow rate is 5g / 10min; the high pressure Low density polyethylene has a density of 0.930 / ml and a melt flow rate of 10g / 10min.

[0039] The preparation method of the polyethylene composition for hazardous waste storage containers is the same as in Example 1.

Embodiment 3

[0041] The polyethylene composition for hazardous waste storage containers includes the following components:

[0042]

[0043]

[0044] Wherein, the density of high-density polyethylene is 0.955g / ml, and the melt flow rate is 12g / 10min; the density of the linear low-density polyethylene is 0.939g / ml, and the melt flow rate is 2.0g / 10min; The density of high-pressure low-density polyethylene is 0.939 / ml, and the melt flow rate is 1.0g / 10min.

[0045] The preparation method of the polyethylene composition for hazardous waste storage containers is the same as in Example 1.

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Abstract

The invention discloses a polyethylene composition for hazardous waste storage containers. The polyethylene composition comprises the following components in parts by mass: 30 to 80 parts of high-density polyethylene, 10 to 30 parts of linear low-density polyethylene, 4 to 30 parts of high-pressure low-density polyethylene, 5 to 15 parts of rubber, 0.1 to 5 parts of a cross-linking agent, 0.1 to 5parts of an active additive, 0.05 to 0.3 part of a nucleating agent, 0.05 to 1.0 part of a light stabilizer, 0.05 to 0.5 part of an antioxidant and 0.02 to 0.08 part of a rheology modifier. Accordingto the invention, high-density polyethylene is used as a main body, and linear low-density polyethylene and high-pressure low-density polyethylene are used as auxiliary materials; by adding the rubber components, the polyethylene composition has excellent low-temperature impact resistance, and is suitable for preparation of the hazardous waste storage containers, especially medium-and-low-level nuclear waste storage containers; and the hazardous waste storage containers are allowed to have excellent low-temperature impact resistance, and can store medium-and-low-level nuclear waste at a low temperature for 300 years or more.

Description

technical field [0001] The invention relates to a polymer composite material, in particular to a polyethylene composition for hazardous waste storage containers, which is used to prepare storage containers for storing nuclear waste and other hazardous wastes. Background technique [0002] Nuclear waste is a kind of hazardous waste, including spent radioactive fuel produced during the production of nuclear fuel and left after the nuclear fuel of a nuclear reactor is burned out. Nuclear waste includes two types of low- and medium-level radioactive nuclear waste and high-level radioactive nuclear waste. The former mainly refers to the radioactive waste liquid and solid waste generated during the power generation process of nuclear power plants, accounting for 99% of all nuclear waste; the latter refers to waste from The burned nuclear fuel removed from the reactor core of a nuclear power plant is commonly known as high-level radioactive waste because of its high radioactivity. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L83/04C08L83/08C08L9/00C08L9/06C08L23/16C08L7/00C08L27/12C08L23/34
CPCC08L23/06C08L23/0815C08L2205/035C08L2205/025C08L2207/062C08L2207/066C08L83/04C08L83/08C08L9/00C08L9/06C08L23/16C08L7/00C08L27/12C08L23/34
Inventor 何英许秋康马良海华九生吴雪松
Owner 康派新材料科技(扬州)有限公司
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