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发明公开
CN107722958A 一种60～90℃溶解的水溶转向剂及其制备方法 无效 - 驳回

一种60～90℃溶解的水溶转向剂及其制备方法
摘要：
本发明涉及一种60～90℃溶解的水溶转向剂及其制备方法，制备方法为：将不同比例的聚乙交酯，聚乙二醇，聚丙交酯共聚，得到嵌段预聚物，然后用扩链剂对预聚物与一定量聚乙二醇的混合物进行了扩链反应，得到可完全快速降解的改性聚氨基烷基酯材料；然后将改性聚氨基烷基酯材料、塑化剂、纳米补强剂、抗氧剂、润滑剂按比例在密炼机中混炼均匀，然后通过双螺杆挤出机中挤出造粒，经挤出机挤出后经挤出拉条，水冷，风干，造粒并破碎，经过筛分后制备不同粒径的水溶转向剂。其中，改性聚氨基烷基酯材料50～100份、塑化剂10～20份、纳米补强剂5～10份，抗氧剂0.1～0.3份，润滑剂0.5～1份。该水溶转向剂可以在60～90℃下溶于水，并在水中降解；具有较高承压强度，可承压30MPa以上。
摘要（英）：

The invention relates to a water-soluble diversion agent capable of being dissolved at 60-90 DEG C and a preparation method of the water-soluble diversion agent. The preparation method comprises the following steps: copolymerizing polyglycollide, polyethylene glycol and polylactide in different proportions so as to obtain a block prepolymer, and carrying out chain extension on the mixture of prepolymer and a certain amount of polyethylene glycol by virtue of a chain extender, so as to obtain a rapidly-degradable modified polyamino alkyl ester material; and uniformly mixing the modified polyamino alkyl ester material, a plasticizer, a nano-reinforcing agent, an antioxidant and a lubricant in an internal mixer, carrying out extrusion and granulation by virtue of a double-screw extruder, carrying out strip pulling, water cooling, granulation, airing and crushing, and sieving, so as to obtain water-soluble diversion agents with different particle sizes. The water-soluble diversion agent contains the following components in parts by weight: 50-100 parts of the modified polyamino alkyl ester material, 10-20 parts of the plasticizer, 5-10 parts of the nano-reinforcing agent, 0.1-0.3 partof the antioxidant and 0.5-1 part of the lubricant. The water-soluble diversion agent can be dissolved into water at 60-90 DEG C and can be degraded in water; and the water-soluble diversion agent hasrelatively high bearing strength and can bear the strength of 30MPa or above.

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