Plastic stabilizer and preparation method thereof

A technology of plastic stabilizer and initiator, applied in the field of preparation of plastic stabilizer, can solve the problems of high cost, inability to meet the requirements of large-scale promotion of ordinary mortar, large investment in production equipment, etc. The effect of water retention and high molecular weight

Active Publication Date: 2014-12-03
FUKE TECH (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many characteristics of dry-mixed mortar cannot meet the requirements of large-scale promotion of ordinary mortar. At the same time, the investment and cost of its production equipment are too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 300 g of deionized water into a 500 ml four-neck flask, add 105 g of allyl alcohol polyoxyethylene ether 2000 (APEG-2000), 5 g of maleic anhydride, 10 g of acrylic acid, and 1 g of acrylamide while stirring. After the addition, nitrogen gas was introduced and the temperature was raised to 80°C. At the same time, the oxidant solution prepared by 6 grams of 35% hydrogen peroxide and 40 grams of deionized water and the solution prepared by 1 gram of sodium sulfite, 1 gram of vitamin C and 25 grams of deionized water were added dropwise. Reducing agent solution, control the reaction temperature at 80--85°C. After 2 hours of reaction, 3 grams of methacryl alcohol polyoxyethylene ether acrylate (molecular weight: 1000) was added at one time, and the remaining initiator was added dropwise within 3 hours at the same time, and then the temperature was maintained for 1 hour. Cool to about 50°C and adjust the pH value to 7.5 with 50% sodium hydroxide solution. The product aft...

Embodiment 2

[0038] Add 300 grams of deionized water into a 500 ml four-necked flask, and add 105 grams of prenol polyoxyethylene ether 2400 (TPEG-2400), 7.5 grams of methacrylic acid, 7.5 grams of acrylic acid, and 1 gram of methacrylic acid under stirring amides. After the addition, nitrogen gas was introduced and the temperature was raised to 70°C. At the same time, 4 grams of 35% hydrogen peroxide, 2 grams of potassium persulfate and 40 grams of deionized water were added dropwise. A reducing agent solution prepared with 25 grams of deionized water, control the reaction temperature at 70--75°C, add 3 grams of allyl alcohol polyoxyethylene ether acrylate (molecular weight: 700) at one time after 110 minutes of reaction, and the remaining initiator in 3 hours The dropwise addition was completed at the same time, and the temperature was maintained for 1 hour. Cool to about 50°C and use 50% sodium hydroxide solution to adjust the pH value to 7.5. The product after adjusting the pH value c...

Embodiment 3

[0040] Add 300 g of deionized water into a 500 ml four-neck flask, add 105 g of methacryl alcohol polyoxyethylene ether 4000 (HPEG-4000), 15 g of acrylic acid, and 1 g of N-methylol acrylamide while stirring. After the addition, nitrogen gas was introduced and the temperature was raised to 70°C. At the same time, 3 grams of 35% hydrogen peroxide, 3 grams of sodium persulfate and 40 grams of deionized water were added dropwise. The reducing agent solution prepared by ion water, the reaction temperature is controlled at 70--75°C. After 130 minutes of reaction, 3 grams of prenol polyoxyethylene ether acrylate (molecular weight: 1300) was added at one time, and the remaining initiator was added dropwise within 3 hours at the same time, and the temperature was kept constant for 1 hour. Cool to about 50°C and use 50% sodium hydroxide solution to adjust the pH value to 7.5. The product after adjusting the pH value can also be spray-dried to make powder.

[0041] The plastic stabiliz...

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PUM

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Abstract

The invention discloses a plastic stabilizer and a preparation method thereof. to obtain The plastic stabilizer is prepared by carrying out polymerization onto four component monomers in the presence of an initiator for 4-8 hours at 60-95 DEG C, wherein the component A is alkenyl polyether acrylate, the component B is alkenyl polyether, the component C is one or a mixture of two of methacrylic acid, acrylic acid, maleic acid, maleic anhydride and corresponding salts thereof; the component D is one of acrylamide, methyl acrylamide and N-hydroxymethyl acrylamide; the mass of component A accounts for 1%-10% of mass of the monomers; an oxidization-reduction system is adopted for initiation, wherein the total mass of an initiator accounts for 0.1%-8% of the total mass of the monomers; after the copolymerization reaction is completed, sodium hydroxide is added into a copolymerization product to neutralize, so that a pH value is regulated to 7-8. The plastic stabilizer prepared by the preparation method has good dispersion and water-retaining property, good plasticity-retaining property, plasticization time up to 24-48 hours while being applied to mortar, and is an environment-friendly type product.

Description

technical field [0001] The invention relates to a cement mortar additive, in particular to a plastic stabilizer for controlling the hardening speed of cement, and a preparation method of the plastic stabilizer. Background technique [0002] With the rapid development of national infrastructure and urbanization, more and more people pay more and more attention to the environmental protection technology and products of energy saving and consumption reduction. Previously, there would be a lot of dust pollution in the on-site mixing of mortar, and the prepared mortar was very random due to the measurement, so the quality of the mortar was difficult to guarantee. The production of dry powder mortar needs to dry the sand, which consumes a lot of resources, so the cost is high, and the on-site mixing also produces dust pollution. [0003] In 2007, the National Bureau of the Sixth Ministry issued the "Notice on the Prohibition of On-Site Mixing Mortar Work in Some Cities within a T...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F222/06C08F220/06C08F220/56C08F220/58C08F4/40C04B24/26
Inventor 徐德高李国云李茂山胡久宏傅雁
Owner FUKE TECH (SUZHOU) CO LTD
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