Preparation method of controlled-degradation high-hygroscopicity resin

Abstract

The invention discloses a preparation method of controlled-degradation high-hygroscopicity resin. The preparation method comprises the following steps of: adding an acrylic acid monomer, a host / guest identification monomer and a functional monomer to a dispersion medium, uniformly mixing, then adding a cross-linking agent and an initiator, and polymerizing under a certain condition to obtain the high-hygroscopicity resin. The preparation method has the advantages that: the identification effect among the host and guest molecules in the polymer chain of the prepared resin can be controlled by changing the external conditions, and the degradation speed of the high-hygroscopicity resin is further controlled, therefore, the degradation time of the high-hygroscopicity resin can be adjusted to be adapted to different completion time during the oil-gas field construction; and under certain conditions, the host and guest molecules in the molecular chain of the degraded resin are compounded toform the high-hygroscopicity resin, thereby achieving the recycling effect. The obtained product can be applied to oil-gas field plugging agents, agricultural water-retaining corrosion inhibitors, soil improvement agents and the like.

Description

technical field

[0001] The invention relates to a preparation method of a controllable degradable polymer superabsorbent resin, which belongs to the field of functional polymer materials. Background technique

[0002] Superabsorbent resin, also known as high-strength water-absorbent, is a new type of functional polymer material developed in the past 30 years. It is a functional polymer material with a network structure of various geometric shapes. It is very easy to absorb water and swell. It can absorb water hundreds to thousands of times its own weight in a short period of time and form an elastic gel with a certain strength. glue. The resin after water absorption does not dehydrate or dehydrates little under pressure. It has the advantages of simple use, stable structure, non-toxic and tasteless, and can be used repeatedly. Therefore, it is widely used in many fields such as agriculture, forestry, medical and health, environmental protection, chemical industry, building...