Pre-crosslinking swell particle profile-control agent and preparation method thereof

• Main Authors: XIAO JINSONG, SUN FEI, DANG GUANGMING, ZHANG SHENG, ZHOU RUIWEN, ZHANG YOUQIANG, LI JING, HU YUGUO, ZHAO DONGXU, WU HAINING, LIANG HAICHEN
• Format: Patent
• Language: Chinese; English
• Published: 02.03.2016
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention discloses a pre-crosslinking swell particle profile-control agent, which comprises the following raw materials (by weight): 90-100 parts of acrylamide, 2-4 parts of 2-acrylamideoctodecyl sulfonic acid, 2-4 parts of N,N-methylene bisacrylamide, 0.02-0.04 part of ammonium persulfate, 0.08-0.2 part of tetramethylethylenediamine, and 300-400 parts of deionized water. Due to large ion steric effect of 2-acrylamideoctodecyl sulfonic acid or 2-acrylamidehexadecyl sulfonic acid, the obtained profile-control agent has a network structure after meeting water to be swelled. In the structure, electrostatic repulsion is little, and molecular chain has agglomeration tendency. Agglomeration force is increased, and strength is enhanced. After water absorption of the profile-control agent, compressive strength is greater than 3MPa. The product has higher compressive strength and has higher elasticity in the bottom layer. Large particle size can be maintained, thus being helpful for blocking large pore path.