公开(公告)号：US12054887B2

公开(公告)日：2024-08-06

申请号：US18327080

申请日：2023-06-01

Applicant: ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Daliang Guo ,  Lizheng Sha ,  Huifang Zhao ,  Jing Li ,  Yinchao Xu ,  Xin Zhang ,  Bei Liu ,  Tianzhong Yuan ,  Ziyang Chang ,  Qianyu Sun ,  Yahui Meng

IPC: D21H13/50 ,  D21H25/06

CPC classification number: D21H13/50 ,  D21H25/06

Abstract: Disclosed is a preparation method of double-layer carbon-paper base paper with high uniformity and gradient pores, including adding carbon fibers to alkali lignin aqueous solution for treatment, controlling the alkali lignin aqueous solution to reach subcritical water conditions, and modifying the carbon fibers by sodium phenol reactive groups under the subcritical water conditions of the alkali lignin, for improving hydrophilic groups on a surface of the carbon fibers and a surface rough structure; further, modifying the carbon fibers to produce carbon nanotube clusters on the surface of the carbon fibers to obtain surface-thermally-modified carbon fibers, and adding the surface-thermally-modified carbon fibers to a dispersant for dispersion, stirring together with auxiliary materials to prepare a mixed slurry, and preparing the mixed slurry into the carbon-paper base paper by wet forming process.

公开(公告)号：US11840806B2

公开(公告)日：2023-12-12

申请号：US18305311

申请日：2023-04-21

Applicant: Zhejiang University of Science and Technology

Inventor： Huifang Zhao ,  Daliang Guo ,  Chian Fang ,  Shouyi Han ,  Yike Huang ,  Liangyu Huang ,  Gaorong Hu ,  Yuechen Zhou ,  Zhiyuan Tu

IPC: D21F11/00 ,  D21H13/02 ,  D21H27/10 ,  D21D1/02

CPC classification number: D21F11/00 ,  D21D1/02 ,  D21H13/02 ,  D21H27/10

Abstract: Disclosed is an environmentally-friendly method for enhancing mechanical properties of a high antibacterial nano dialysis paper for medical protection, includes following steps: a, preparing pulp components, and taking 40-60 parts of hardwood pulp, 10-20 parts of polyvinyl alcohol fiber, 30-50 parts of softwood pulp, 10-20 parts of cellulose fiber by mass; b, putting the hardwood pulp, the polyvinyl alcohol fiber, the softwood pulp and the cellulose fiber into a beater for beating to make a pulp, and then adding modified chitosan accounting for 1-5% of a weight of the pulp into the pulp, and defibering for 10-20 minutes at a rotating speed of 1500-2000 revolutions per minute in a defibrator; and c, carrying out papermaking with the pulp after defibering to form a dialysis paper finished product.