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Preparation process of viscosity reduction type water reducing agent
The invention belongs to the technical field of water reducing agent preparation, and particularly relates to a viscosity reduction type water reducing agent preparation process which comprises the following steps: step 3, after an initiator and a chain transfer agent are added each time, performing one-time PH value monitoring on reaction liquid in a preparation device to check whether the PH value is consistent with an expected value or not; 4, if the PH value of the reaction liquid in the preparation device is consistent with the expected value, continuing to add the initiator and the chain transfer agent, and carrying out addition polymerization reaction on the three components to obtain a reaction product; 5, if the measured PH value of the reaction liquid in the preparation device is inconsistent with the expected value, adding is stopped immediately; and 6, cooling the reaction product in the step 4 to 30-35 DEG C, and adding alkali to adjust the pH value to 6-7 to obtain the viscosity reduction type water reducer, according to the process, the pH value of the reaction liquid can be monitored once after the initiator and the chain transfer agent are added each time, if the measured pH value of the reaction liquid is inconsistent with an expected value, the addition is stopped immediately, and the viscosity reduction type water reducer has a timely loss stopping function.
本发明属于减水剂制备技术领域，尤其涉及一种降粘型减水剂制备工艺，该工艺包括以下步骤：步骤三：在每次添加引发剂和链转移剂后，对制备装置内的反应液体进行一次PH值监测，查看是否与预期值一致；步骤四：若制备装置内的反应液体PH值与预期值一致，则继续添加引发剂和链转移，三者进行加成聚合反应，得到反应产物；步骤五：若制备装置内的反应液体所测得PH值与预期值不一致，则立即停止添加；步骤六：将步骤四反应产物降温至30‑35℃，加碱调节PH值为6‑7，即得降粘型减水剂，该工艺能够在每次添加引发剂和链转移剂后，对反应液体进行一次PH值监测，若反应液体所测得PH值与预期值不一致，则立即停止添加，具备及时止损功能。
Preparation process of viscosity reduction type water reducing agent
The invention belongs to the technical field of water reducing agent preparation, and particularly relates to a viscosity reduction type water reducing agent preparation process which comprises the following steps: step 3, after an initiator and a chain transfer agent are added each time, performing one-time PH value monitoring on reaction liquid in a preparation device to check whether the PH value is consistent with an expected value or not; 4, if the PH value of the reaction liquid in the preparation device is consistent with the expected value, continuing to add the initiator and the chain transfer agent, and carrying out addition polymerization reaction on the three components to obtain a reaction product; 5, if the measured PH value of the reaction liquid in the preparation device is inconsistent with the expected value, adding is stopped immediately; and 6, cooling the reaction product in the step 4 to 30-35 DEG C, and adding alkali to adjust the pH value to 6-7 to obtain the viscosity reduction type water reducer, according to the process, the pH value of the reaction liquid can be monitored once after the initiator and the chain transfer agent are added each time, if the measured pH value of the reaction liquid is inconsistent with an expected value, the addition is stopped immediately, and the viscosity reduction type water reducer has a timely loss stopping function.
本发明属于减水剂制备技术领域，尤其涉及一种降粘型减水剂制备工艺，该工艺包括以下步骤：步骤三：在每次添加引发剂和链转移剂后，对制备装置内的反应液体进行一次PH值监测，查看是否与预期值一致；步骤四：若制备装置内的反应液体PH值与预期值一致，则继续添加引发剂和链转移，三者进行加成聚合反应，得到反应产物；步骤五：若制备装置内的反应液体所测得PH值与预期值不一致，则立即停止添加；步骤六：将步骤四反应产物降温至30‑35℃，加碱调节PH值为6‑7，即得降粘型减水剂，该工艺能够在每次添加引发剂和链转移剂后，对反应液体进行一次PH值监测，若反应液体所测得PH值与预期值不一致，则立即停止添加，具备及时止损功能。
Preparation process of viscosity reduction type water reducing agent
一种降粘型减水剂制备工艺
LIU HAONAN (author)
2023-07-04
Patent
Electronic Resource
Chinese
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
C04B
Kalk
,
LIME
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