本文關(guān)鍵詞：本體聚合法合成固體聚羧酸減水劑的研究及性能評價　出處：《化工進(jìn)展》2017年08期 　論文類型：期刊論文

  更多相關(guān)文章： 固體聚羧酸減水劑 本體聚合 水泥凈漿流動度 分散性

【摘要】：以丙烯酸和501醚類大單體為原料,在本體聚合條件下合成了固體聚羧酸減水劑,研究了溫度、鏈轉(zhuǎn)移劑加量、引發(fā)劑加量、酸醚摩爾比和滴加時間對產(chǎn)物性能的影響,發(fā)現(xiàn)溫度、鏈轉(zhuǎn)移劑加量、引發(fā)劑加量、酸醚摩爾比和滴加時間對產(chǎn)物性能影響明顯。實驗結(jié)果表明,當(dāng)反應(yīng)溫度為70℃、鏈轉(zhuǎn)移劑加量為單體質(zhì)量0.35%、引發(fā)劑加量為單體質(zhì)量1%、酸醚摩爾比為4∶1、滴加時間為2h時,所制備的固體聚羧酸減水劑具有良好的分散性能和坍落度保持性,水泥凈漿初始流動度為315mm,1h后凈漿流動度為320mm。最后利用紅外光譜對產(chǎn)物分子結(jié)構(gòu)進(jìn)行表征,結(jié)果表明丙烯酸和501大單體聚合反應(yīng)順利進(jìn)行。
[Abstract]:Solid polycarboxylic acid superplasticizer was synthesized by bulk polymerization of acrylic acid and 501 ether macromonomer. The temperature, the amount of chain transfer agent and the amount of initiator were studied. The effects of acid ether molar ratio and dropping time on the properties of the product were investigated. It was found that the temperature, the amount of chain transfer agent, the amount of initiator, the molar ratio of acid and ether and the dropping time had obvious effects on the properties of the product. When the reaction temperature is 70 鈩，

本文編號：1436003