Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant crosslinking fluid loss agent as well as preparation method and application thereof
The invention belongs to the technical field of cement additives, and particularly relates to a high-temperature-resistant crosslinking fluid loss agent as well as a preparation method and application thereof. The fluid loss agent comprises the following raw materials: PVA, lignosulfonate, chitosan quaternary ammonium salt, water, a pH regulator, a cross-linking agent and a cosolvent. The adhesive comprises the following components in parts by mass: 5-14 parts of PVA, 0-2 parts of lignosulfonate, 2-7 parts of chitosan quaternary ammonium salt, 0.4-3 parts of a cross-linking agent, 3-5 parts of a cosolvent and 160-200 parts of water. Specifically, the total mass of PVA, chitosan quaternary ammonium salt and lignosulfonate accounts for 7-18% of the mass of the total reaction solution. Chitosan quaternary ammonium salt and PVA are utilized, through chemical crosslinking reaction, the high temperature of 150 DEG C can be resisted, meanwhile, the mixing amount of the fluid loss agent is low, and the water loss performance is good. The crosslinking degree can be controlled and the swelling degree of the fluid loss agent can be controlled by introducing lignosulfonate. In the production process, the raw materials of the fluid loss agent are non-toxic and harmless, three wastes are not generated, and the fluid loss agent does not hurt constructors in the use process.
本发明属于水泥添加剂技术领域，尤其涉及一种耐高温交联降失水剂、制备方法及应用。降失水剂的原料包括：PVA、木质素磺酸盐、壳聚糖季铵盐、水、pH调节剂、交联剂、助溶剂；按照质量份数，PVA为5‑14份、木质素磺酸盐为0‑2份、壳聚糖季铵盐为2‑7份、交联剂为0.4‑3份、助溶剂为3‑5份、水为160‑200份；具体的，PVA、壳聚糖季铵盐和木质素磺酸盐三者的质量总和占反应总溶液质量的7％‑18％。本发明利用壳聚糖季铵盐和PVA，通过化学交联反应，可耐至150℃高温，同时降失水剂的掺量较低，失水性能良好。木质素磺酸盐的引入可控制交联度，控制降失水剂溶胀度。在生产过程中降失水剂的原料无毒无害，不产生三废，使用过程中，不会对施工人员产生伤害。
High-temperature-resistant crosslinking fluid loss agent as well as preparation method and application thereof
The invention belongs to the technical field of cement additives, and particularly relates to a high-temperature-resistant crosslinking fluid loss agent as well as a preparation method and application thereof. The fluid loss agent comprises the following raw materials: PVA, lignosulfonate, chitosan quaternary ammonium salt, water, a pH regulator, a cross-linking agent and a cosolvent. The adhesive comprises the following components in parts by mass: 5-14 parts of PVA, 0-2 parts of lignosulfonate, 2-7 parts of chitosan quaternary ammonium salt, 0.4-3 parts of a cross-linking agent, 3-5 parts of a cosolvent and 160-200 parts of water. Specifically, the total mass of PVA, chitosan quaternary ammonium salt and lignosulfonate accounts for 7-18% of the mass of the total reaction solution. Chitosan quaternary ammonium salt and PVA are utilized, through chemical crosslinking reaction, the high temperature of 150 DEG C can be resisted, meanwhile, the mixing amount of the fluid loss agent is low, and the water loss performance is good. The crosslinking degree can be controlled and the swelling degree of the fluid loss agent can be controlled by introducing lignosulfonate. In the production process, the raw materials of the fluid loss agent are non-toxic and harmless, three wastes are not generated, and the fluid loss agent does not hurt constructors in the use process.
本发明属于水泥添加剂技术领域，尤其涉及一种耐高温交联降失水剂、制备方法及应用。降失水剂的原料包括：PVA、木质素磺酸盐、壳聚糖季铵盐、水、pH调节剂、交联剂、助溶剂；按照质量份数，PVA为5‑14份、木质素磺酸盐为0‑2份、壳聚糖季铵盐为2‑7份、交联剂为0.4‑3份、助溶剂为3‑5份、水为160‑200份；具体的，PVA、壳聚糖季铵盐和木质素磺酸盐三者的质量总和占反应总溶液质量的7％‑18％。本发明利用壳聚糖季铵盐和PVA，通过化学交联反应，可耐至150℃高温，同时降失水剂的掺量较低，失水性能良好。木质素磺酸盐的引入可控制交联度，控制降失水剂溶胀度。在生产过程中降失水剂的原料无毒无害，不产生三废，使用过程中，不会对施工人员产生伤害。
High-temperature-resistant crosslinking fluid loss agent as well as preparation method and application thereof
一种耐高温交联降失水剂、制备方法及应用
LIU ZHONGHUA (Autor:in)
06.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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