Antifreezing snow melting agent and preparation method thereof

The technology of a snow-melting agent and a retarding agent is applied to the composition field of anti-freezing snow-melting agents, which can solve the problems of high price and the like, and achieve the effects of lowering the freezing point, prolonging the deicing action time, and improving the crop yield.

Inactive Publication Date: 2012-07-04
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Looking at home and abroad, the current existing deicing agents can be divided into chlorine salt type, non-chlorine salt type (mainly refers to acetate, alcohol, amine, etc.) and mixed type (mainly refers to th

Method used

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  • Antifreezing snow melting agent and preparation method thereof
  • Antifreezing snow melting agent and preparation method thereof
  • Antifreezing snow melting agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] (1) Preparation of antifreeze snow melting agent

[0034] 1. Preparation of organic water-absorbing agent: under 20℃, prepare 10g chitosan hydrochloride solution with a mass concentration of 1%, pH value is 5.7, and 10g chitosan hydrochloride solution with a mass concentration of 1% Mix with 50g of soluble starch and stir evenly to obtain 60g of organic water absorbent.

[0035] 2. Preparation of freezing point depressant: mix 80 g of ethanol with 70 g of glycerin and 30 g of ethylene glycol and stir to obtain 180 g of freezing point depressant.

[0036] 3. Preparation of freeze retarder: pulverize with 20g diammonium phosphate, 20g urea, 10g ammonium sulfate, 10g ammonium nitrate, 3g sodium acetate, 1g zinc acetate, 1g ferric nitrate, add 44g water and stir to obtain 109g freeze retarder.

[0037] 4. Take 25g of the organic water absorbing agent obtained above, 150g of freezing point depressant, and 40g of freezing retarder and mix, add 270g of water, fully s...

Example Embodiment

[0074] Example 2

[0075] (1) Preparation of antifreeze snow melting agent

[0076] 1. Preparation of organic water-absorbing agent: prepare 10g of chitosan hydrochloride solution with a mass concentration of 1%, pH value of 5.5, and 10g of chitosan hydrochloride solution with a mass concentration of 1% at 20°C Mix with 20g of soluble starch and stir evenly to obtain 30g of organic water absorbent.

[0077] 2. Preparation of freezing point depressant: mix 20 g of ethanol with 40 g of glycerin and 15 g of ethylene glycol and stir uniformly to obtain 75 g of freezing point depressant.

[0078] 3. Preparation of freezing retarder: pulverize with 40g diammonium phosphate, 40g urea, 10g ammonium sulfate, 10g ammonium nitrate, 2g sodium acetate, 0.8g zinc acetate, 1g ferric nitrate, add 64g water and stir uniformly to obtain 167.8g freeze retarder.

[0079] 4. Take 10g of the organic water absorbing agent obtained above, 75g of freezing point depressant, and 30g of freezing retarder and mix,...

Example Embodiment

[0108] Example 3

[0109] (1) Preparation of antifreeze snow melting agent

[0110] 1. Preparation of organic water-absorbing agent: prepare 30g chitosan hydrochloride solution with a mass concentration of 1% at 20°C, pH value is 5.6, and 20g chitosan hydrochloride solution with a mass concentration of 1% Mix with 30g of soluble starch and stir evenly to obtain 50g of organic water absorbent.

[0111] 2. Preparation of freezing point depressant: mix 30 g of ethanol with 50 g of glycerin and 20 g of ethylene glycol and stir to obtain 100 g of freezing point depressant.

[0112] 3. Preparation of freezing retarder: pulverize with 20g diammonium phosphate, 20g urea, 5g ammonium sulfate, 5g ammonium nitrate, 2g sodium acetate, 2g zinc acetate, 1g ferric nitrate, add 55g water and stir to obtain 110g freeze retarder.

[0113] 4. Take 15g of the organic water absorbing agent obtained above, 100g of freezing point depressant, and 20g of freezing delay agent and mix, add 250g of water, fully s...

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Abstract

The invention discloses an antifreezing snow melting agent which is obtained by combining an organic water-absorbing agent formed by chitosan hydrochloride and soluble starch with a freezing point reducing agent formed by three alcohols or polyols and then adding a freezing delaying agent formed by soluble amine or amine salt, soluble acetate and an additive. The preparation method comprises the following steps: (1) adding chitosan hydrochloride in the soluble starch and evenly mixing to prepare the organic water-absorbing agent; (2) preparing the freezing point reducing agent from ethanol, glycerol and glycol in a proportion; (3) preparing the freezing delaying agent from the soluble amine salt, soluble acetate and the additive in a proportion; and (4) adding water and mixing the three parts of substances in a proportion and then filtering so as to prepare the antifreezing snow melting agent. The antifreezing snow melting agent disclosed by the invention has obvious effects in the aspects of freezing time delay, use convenience, environment friendliness, comprehensive efficacy and the like.

Description

technical field [0001] The invention relates to the field of snow-melting agents, in particular to the composition of an antifreeze-type snow-melting agent. Background technique [0002] Looking at home and abroad, the current existing deicing agents can be divided into chlorine salt type, non-chlorine salt type (mainly refers to acetate, alcohol, amine, etc.) and mixed type (mainly refers to the addition of rust inhibitors and preservatives etc.), either the price is expensive, or the chlorinated salt content is as high as 80% to 90%, and there is no environmentally friendly deicing agent suitable for road use. [0003] Environmentally friendly snow melting agent means that the product does not contain sodium chloride and is specially added with special protective agent and other ingredients to reduce the impact and damage on roads and the environment. Or the deicing products are green and environmentally friendly, basically harmless to road surfaces, green plants and publ...

Claims

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Application Information

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IPC IPC(8): C09K3/18
Inventor 黄德智黄德惠张勇段卫红魏志苹夏秀美樊桂芳姜东
Owner DALIAN POLYTECHNIC UNIVERSITY
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