Chemical slip casting strengthening material and preparation method thereof

A grouting reinforcement and chemical technology, applied in mining equipment, earthwork drilling, pillars/supports, etc., can solve the problems of poor flame retardant performance, difficult to achieve, environmental pollution, etc., to improve stability and compressive bearing capacity , convenient operation, flexible storage and transportation

Inactive Publication Date: 2009-12-16
廊坊鑫美源化工建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The currently commonly used chemical grouting reinforcement material is polyurethane. The disadvantage is that the flame retardancy is poor, and it is difficult to meet the national GB8624-97 standard flame retardant B1 level. The strength is small and the cost is high. In case of fire, the smoke density is large, accompanied by liquid dripping And the release of toxic cyanide ions, which is easy to cause environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Preparation of phenolic resin: Take 10kg of phenol and 13kg of formaldehyde, mix them well with 0.23kg of NaOH, heat to 95°C, react at this temperature for 4 hours, neutralize with 98% phosphoric acid, dehydrate until the solid content is greater than 70% After that, stop heating, cool to 25°C, add 1.84kg silicone oil and 2.3kg cyclopentane, and mix thoroughly;

[0021] 2) Preparation of curing agent: 10 kg of p-toluenesulfonic acid, 13 kg of 98% phosphoric acid, 5 kg of 37% hydrochloric acid and 1 kg of plasticizer ethylene glycol were mixed.

[0022] 3) When using, use a high-pressure sprayer to mix and inject equal weights of the phenolic resin obtained in step 1 and the curing agent obtained in step 2 at the same time.

[0023] In this example, the weight ratio of phenol to formaldehyde is 1:1.3, NaOH accounts for 10‰ of the total weight of phenol and formaldehyde, silicone oil and cyclopentane account for 8% and 10% of the total weight of phenol and formaldehyde...

Embodiment 2

[0025] 1) Preparation of phenolic resin: take 10kg of phenol and 15kg of formaldehyde, mix them well with 0.325kg of NaOH, heat to 90°C, react at this temperature for 6 hours, neutralize with 98% phosphoric acid, and dehydrate until the solid content is greater than 70% Finally, after neutralization and dehydration, stop heating, cool to 25°C, add 1.75kg silicone oil, 2.0kg petroleum ether, and mix thoroughly;

[0026] 2) Preparation of curing agent: 6 kg of p-toluenesulfonic acid, 8 kg of 98% phosphoric acid, 10 kg of 37% hydrochloric acid and 1 kg of plasticizer ethylene glycol were mixed.

[0027] 3) When using, use a high-pressure sprayer to mix and inject equal weights of the phenolic resin obtained in step 1 and the curing agent obtained in step 2 at the same time.

[0028] In this example, the weight ratio of phenol to formaldehyde is 1:1.5, NaOH accounts for 13‰ of the total weight of phenol and formaldehyde, silicone oil and cyclopentane account for 7% and 8% of the t...

Embodiment 3

[0030] 1) Preparation of phenolic resin: Take 10kg of phenol and 14kg of formaldehyde, mix them well with 0.288kg of NaOH, heat to 100°C, react at this temperature for 5 hours, neutralize with 98% phosphoric acid, and dehydrate until the solid content is greater than 70% After that, stop heating, cool to 25°C, add 1.44kg silicone oil and 1.44kg cyclopentane, and mix thoroughly;

[0031] 2) Preparation of curing agent: 8 kg of p-toluenesulfonic acid, 10 kg of 98% phosphoric acid, 8 kg of 37% hydrochloric acid and 1 kg of plasticizer ethylene glycol were mixed.

[0032] 3) When using, use a high-pressure sprayer to mix and inject equal weights of the phenolic resin obtained in step 1 and the curing agent obtained in step 2 at the same time.

[0033] In this embodiment, the weight ratio of phenol and formaldehyde is 1:1.4, NaOH accounts for 12‰ of the total weight of phenol and formaldehyde, silicone oil and cyclopentane all account for 6% of the total weight of phenol and formal...

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Abstract

The invention relates to a chemical slip casting strengthening material and a preparation method thereof. A chemical slip casting strengthening material with two components (component A and component B) is provided, thus effectively solving the problems existing in conventional chemical slip casting materials, such as slow polyurethane polymerization, poor flame retardation and environment pollution. When the chemical slip casting material is used, the component A, i.e. phenolic resin, and the component B, i.e. curing agent, are mixed according to a weight ratio of 1:1. The phenolic resin is obtained by firstly mixing phenol and formaldehyde according to a weight ratio of 1:1.3-1.5, then adding the catalyst NaOH, heating the mixture to a temperature of 90-100 DEG C, causing the reaction to last 4-6 hours, carrying out neutralization and dehydration, cooling the mixture to 25 DEG C and adding foaming agent and surfactant for full mixing. The curing agent consists of 0.6-1.0 part of p-toluenesulfonic acid by weight, 0.8-1.3 parts of phosphoric acid by weight, 0.5-1.0 part of hydrochloric acid by weight and 0.1 part of ethylene glycol by weight. The chemical slip casting material needs a short time for solidification, has an inflaming retarding oxygen index higher than or equal to 54, and is suitable for the slip casting strengthening engineering of a mine, as well as the seepage-proofing, leaking stoppage and strengthening work of an ordinary underground engineering or a water conservancy engineering.

Description

technical field [0001] The invention relates to a reinforcement material and a preparation method thereof, in particular to a grouting reinforcement material and a preparation method thereof. Background technique [0002] In the process of mineral mining, it is often encountered on the mining surface and the support surface that fractures and broken zones are formed at the operating point due to the difference in density and strength, which affects the mining progress and poses a safety hazard. [0003] The use of organic polymer materials for reinforcement is a new technology developed abroad in the early 1970s. For decades, this technology has been developed rapidly in major coal-producing countries in the world. my country began to study chemical grouting reinforcement technology in the early 1990s, and has made great progress. [0004] The chemical grouting reinforcement of the fault fracture zone in the underground working face of the coal mine can solidify the broken ...

Claims

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Application Information

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IPC IPC(8): C08L61/10C08K5/42E21D15/50C08K3/32C08K5/053
Inventor 朱培英
Owner 廊坊鑫美源化工建材有限公司
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