Preparation method of mud-resistant polycarboxylic acid water-reducing agent

Preparation method of mud-resistant polycarboxylic acid water-reducing agent

  • CN 106,589,253 A
  • Filed: 12/02/2016
  • Published: 04/26/2017
  • Est. Priority Date: 12/02/2016
  • Status: Active Application
First Claim
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1. a kind of preparation method of anti-chamotte mould polycarboxylate water-reducer, it is characterised in that comprise the following steps:

  • (1) a certain amount of allyl polyethenoxy ether is added in the container equipped with deionized water and is diluted, and stirring is warming up to 45-65 DEG C, allyl polyethenoxy ether mixed liquor is uniformly divided into into three parts after stirring, respectively allyl polyethenoxy ether is mixedClose liquid I, allyl polyethenoxy ether mixed liquor II and allyl polyethenoxy ether mixed liquor III;

    (2-1) allyl polyethenoxy is disposably added successively in equipped with thermometer, agitator, five mouthfuls of flasks of constant pressure funnelEther mixed liquor I, a certain amount of Methacrylamide and a certain amount of initiator, keeping temperature is 45-65 DEG C under agitation,Then at the uniform velocity a certain amount of end-blocking amidophosphoric acid ester of Deca, reducing agent and chain-transferring agent simultaneously in 1~

    2h, drip holding and stirThe state of mixing obtains mixed liquor I;

    (2-2) it is disposable in equipped with thermometer, agitator, the there-necked flask of constant pressure funnel to add allyl polyethenoxy ether to mixLiquid II and a certain amount of initiator are closed, keeping temperature is 45-65 DEG C under agitation, then the at the uniform velocity Deca one in 1~

    2hQuantitative methylpropene sodium sulfonate, drips the state of being kept stirring for and obtains mixed liquor II;

    (2-3) allyl polyethenoxy is disposably added successively in equipped with thermometer, agitator, five mouthfuls of flasks of constant pressure funnelEther mixed liquor III and a certain amount of initiator, keeping temperature is 45-65 DEG C under agitation, then simultaneously even in 1~

    3hA certain amount of acrylic acid of fast Deca, reducing agent and chain-transferring agent, the state of being kept stirring for obtain mixed liquor III;

    The step (2-1), step (2-2) and step (2-3) are while carry out;

    (3), after disposably adding mixed liquor I and mixed liquor II in mixed liquor III, continue simultaneously at the uniform velocity to drip propylene in 1hAcid, reducing agent and chain-transferring agent, are down to room temperature after continuing stirring 1h, that is, obtain a kind of anti-chamotte mould polycarboxylic acids diminishing after drippingAgent.

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