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TDI macromolecular gel decontaminating agent

A molecular gel decontaminant, D230 technology, which is applied in the field of post-treatment of dangerous chemical products, can solve the problems of secondary pollution of decontamination products, large dosage of chemicals, long disposal time, etc., and achieves convenient follow-up treatment and fast response speed , the effect of rapid recovery

Active Publication Date: 2020-07-10
中国人民警察大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, the amount of chemicals required for treatment is large and the cost is high; second, the disposal time is too long, and the disaster cannot be quickly controlled; third, the decontamination products may cause secondary pollution

Method used

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  • TDI macromolecular gel decontaminating agent
  • TDI macromolecular gel decontaminating agent
  • TDI macromolecular gel decontaminating agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 Toluene diisocyanate and polyether amine dosage ratio optimization

[0024] For the configuration of TDI macromolecular gel decontaminant, take 15g of isopropanol, 90g of the total mass of toluene diisocyanate and polyetheramine D230, and set the gradient of the dosage ratio of toluene diisocyanate and polyetheramine D230 to 2:5, 3:5 , 4:5, 5:5, 5:4, 5:3, 5:2; Prepare 700g of toluene to be decontaminated, and put it in a container with a surface area of ​​0.2 square meters, and set up 7 containers in total.

[0025] Mix polyetheramine D230 and isopropanol evenly and sprinkle it evenly on the surface of the container, then sprinkle toluene diisocyanate evenly on the surface of the container, start timing, when the mixture in the container appears as figure 1 When the gel state is shown, stop timing and calculate the time (s) for gel formation.

[0026] Measurement results such as figure 2 As shown, when the mass ratio of toluene diisocyanate and polyether...

Embodiment 2

[0027] Example 2 Optimization of the total mass ratio of isopropanol to toluene diisocyanate and polyetheramine D230

[0028] Isopropanol is used as a dispersant, the amount of addition will affect the viscosity, mechanical properties and encapsulation rate of the final gel, and will eventually affect the volatilization of toluene in the gel.

[0029] The configuration of TDI macromolecular gel decontamination agent, the total amount is 100g, the dosage ratio of toluene diisocyanate and polyetheramine D230 is 4:5, the mass ratio of isopropanol to the total mass of toluene diisocyanate and polyetheramine D230, Set the gradient to 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9; prepare 1000g of toluene to be decontaminated, and place it in a container with a surface area of ​​0.2 square meters. 7 containers.

[0030] Mix polyetheramine D230 and isopropanol evenly and sprinkle it evenly on the surface of the container, and then sprinkle toluene diisocyanate evenly on the surface of the conta...

Embodiment 3

[0034] The optimum amount optimization of embodiment 3 gel decontamination agent

[0035] For the configuration of TDI macromolecular gel decontamination agent, take 15g of isopropanol, 40g of toluene diisocyanate, 50g of polyetheramine D230, and 50g of polyetheramine D230 in isopropanol; prepare respectively 2100g of toluene to be decontaminated (equivalent to dosage is 5% of toluene mass), 1312.5g (8%), 1050g (10%), 875g (12%), 700g (15%), 583.3g (18%), 525g (20%) are placed on the surface area In a container of 0.2 square meters, a total of 8 containers are set.

[0036] Mix polyetheramine D230 and isopropanol evenly and sprinkle it evenly on the surface of the container, and then sprinkle toluene diisocyanate evenly on the surface of the container, when the mixture in the container appears as figure 1 When the gel state is shown, the gel is formed.

[0037] After the gel was formed, the detection method as in Example 2 was used to detect the volatilization of toluene, an...

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Abstract

The invention discloses a TDI macromolecular gel decontaminating agent. The decontaminating agent is prepared from the following components in parts by weight: 35 to 45 parts of toluene diisocyanate,45 to 55 parts of polyether amine D230 and 10 to 20 parts of isopropanol. According to the invention, the isopropanol can reduce the viscosity of other components and is convenient to disperse, the polyether amine D230 and the toluene diisocyanate are subjected to a chemical reaction, a macromolecular substance generated by the reaction is a gel, and a gel skeleton can be generated under the action of chemical bonds to wrap toluene. The product disclosed by the invention is high in reaction speed, and a curing effect can be achieved within 2 minutes; the dosage of the decontaminating agent issmall, the decontaminating agent can be cured when the content of the decontaminating agent is about 5%, and various parameters of a decontaminating product are optimal when the content is 15%; the decontamination product is convenient for subsequent treatment and can be quickly recycled.

Description

technical field [0001] The invention belongs to the technical field of post-disposal treatment of dangerous chemical goods, and in particular relates to a TDI macromolecular gel decontaminant. Background technique [0002] With the rapid development of my country's modern industry, toluene is an important chemical raw material, and leakage accidents occur frequently due to various reasons. Toluene has the characteristics of flowing and volatilizing rapidly, burning and exploding when exposed to heat or open flame, and having a great poisonous effect on the surrounding environment and human body. The characteristic is that once such hazardous chemicals leak, if the situation cannot be controlled in a short time to curb the development, it will cause pollution of the surrounding soil and water bodies at the slightest, and cause casualties or even cause serious consequences such as fire and explosion. In dealing with such leakage accidents of hazardous chemicals, the emergency r...

Claims

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Application Information

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IPC IPC(8): A62D3/33A62D101/20
CPCA62D3/33A62D2101/20
Inventor 卢林刚
Owner 中国人民警察大学
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