Southwest Petroleum University

Danchao Huang

Yang Bai

Gang Xie

Daoxiong Li

Jinsheng Sun

Pingya Luo

Jing Zhang

Feng Dai

Wenzhe Li

Ren Wang

Dezhi Liu

Chunyan Liu

Hongbo Li

Chaowei Hu

Jintang Wang

A nanographene, a preparation method thereof, and uses thereof are disclosed. The method of preparing the nanographene includes the steps: (1) carrying out a first reaction by contacting a raw material graphite and a first oxidizing agent with an intercalating agent to obtain a modified graphite; (2) performing a second reaction by contacting the modified graphite and an acid with a second oxidizing agent to obtain a graphene pre-product; and (3) subjecting the graphene pre-product to an air-flow exfoliation to prepare a nanographene. An oil-based drilling fluid containing the nanographene produced by the method is also disclosed.

Nanographene and preparation method and use thereof and oil-based drilling fluid

A method of preparing a modified polyvinyl acetate includes subjecting a mixed liquor Lcontaining a functional monomer to a first reaction with a first vinyl acetate monomer, followed by adding a first initiator to carry out a second reaction to obtain a mixed liquor L; subjecting an acrylate monomer, a second vinyl acetate monomer, a second initiator and the mixed liquor Lto carry out a third reaction to obtain a mixed liquor L; and subjecting a third initiator and the mixed liquor Lto carry out a fourth reaction under the air-tight and ultrasonic conditions. The functional monomer is selected from acrylic acid, oleic acid or butenedioic acid. Uses of modified polyvinyl acetate obtained by the method and oil-based drilling fluid containing the modified polyvinyl acetate are also disclosed.

Modified polyvinyl acetate and preparation method and use thereof and oil-based drilling fluid

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Chengdu, China

Danchao Huang