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Adhesive, coal car leaking stoppage material containing the same, and preparation thereof

A technology of plugging materials and adhesives, applied in chemical instruments and methods, adhesive types, transportation and packaging, etc., can solve problems affecting users' use, high labor intensity, adverse consequences, etc., and achieve good bonding and curing Excellent plugging performance and mechanical properties

Active Publication Date: 2010-08-18
CHINA SHENHUA ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the labor intensity is high, the on-site construction requires too much manpower, the construction is difficult, and the braid impurities are introduced into the coal, which affects the use of users and causes adverse consequences

Method used

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  • Adhesive, coal car leaking stoppage material containing the same, and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment is a specific implementation for preparing the adhesive.

[0041] Pour water into the reaction kettle, raise the temperature to 75-85°C, add polyvinyl alcohol under stirring, raise the temperature to 90°C and keep it warm until it completely dissolves into a clear liquid. Slowly add (1+1) hydrochloric acid, adjust the pH value to 1.5-2.5, stir for 10 minutes, start to add 37% formaldehyde solution dropwise, finish adding dropwise in about 30 minutes, react at about 86°C for 1 hour, and flocs appear Separated from water, add a proper amount of ethanol at this time, and the flocs will dissolve immediately, continue to react until the second separation, and then add ethanol to adjust. Add 15% sodium hydroxide solution to adjust the pH value to 5-6. When the temperature is lowered to 40°C, the white color disappears or becomes transparent. Add urea and thiocyanate in sequence, and react for another 30 minutes. Finally, add water-dispersed montmorillonite or ...

Embodiment 2

[0043] This example is a specific implementation of preparing the plugging material.

[0044] (1) Raw material formula: solid component (composition by weight percentage): coal powder (≤3 mm): 40-60%; talcum powder (through 400 mesh screen): 5-25%; %; quicklime powder: 10-20%; borax: 2-3%; PAM powder: 0.2-3%.

[0045] Adhesive component: PVA adhesive is diluted with water-alcohol solvent to PVA solid content 7%, CMC solution concentration 7%. Depending on the applicable temperature, the two are properly mixed.

[0046] (2) Preparation steps:

[0047] First, mix the coal powder, talcum powder and borax according to the formula evenly, prevent moisture for future use, and record it as component 1 (filler skeleton material);

[0048] Secondly, mix the quick-setting cement, lime powder and PAM powder evenly, keep it moisture-proof for later use, and record it as component 2 (quick-setting solidification material);

[0049] The 3rd, the adhesive prepared by embodiment 1 is mixe...

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Abstract

The invention provides an adhesive. The invention also provides a leaking stoppage material for a coal vehicle, and the leaking stoppage material comprises a leaking stoppage framework component containing coal powder, a curing component containing quick-setting cement, and an adhesion component containing the adhesive. The adhesive and the leaking stoppage material for the coal vehicle containing the adhesive have simple preparation processes and excellent adhesion performances, and are particularly suitable to be used in low-temperature environment.

Description

technical field [0001] The invention relates to an adhesive, a coal truck leakage plugging material containing the adhesive and a preparation method thereof. Background technique [0002] my country is a big country of coal production and consumption, with an annual output of more than 1.7 billion tons. Nearly 80% of the coal is transported by rail each year and sent to all parts of the country and export ports. At present, there are large gaps in the doors of coal wagons transported by railways, and there are serious leakage problems during coal transportation. According to relevant data, my country's annual loss of coal due to transportation leakage is about 10 million tons, exceeding 1% of the total output of the year. It not only causes resource and economic losses, but also brings serious dust pollution to the environment along the way. [0003] In order to solve the problem of large door gaps caused by the deformation of the carriages and the loss of coal spills caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G69/18C09J129/04C09K3/12
Inventor 顾大钊陈怀珍陈振龙顾小愚谷红伟李侃社蔡会武陈创前
Owner CHINA SHENHUA ENERGY CO LTD
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