公开(公告)号：US12286750B2

公开(公告)日：2025-04-29

申请号：US18703721

申请日：2022-10-31

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Yichao Lei ,  Mengdi Wang ,  Hailong Li ,  Jian Hu

IPC: D21C1/06 ,  D21C3/02 ,  D21C9/02 ,  D21C9/16 ,  D21C11/00 ,  D21C11/02

Abstract: Discloses are a method for preparing fluff pulp from bamboos, and the fluff pulp prepared thereby. The method comprises the following steps: treating the bamboos with high-concentration alkali at a relatively mild temperature, after a certain period of treatment, replacing a treatment liquid for separating hemicellulose with a weak black liquor; Kraft cooking the treated bamboos to obtain unbleached bamboo pulp, removing rejects in the unbleached bamboo pulp by using a slotted screen; then removing miscellaneous cells by using a microporous sieve; carrying out two stages of oxygen delignification on the screened pulp; carrying out ECF bleaching treatment of a D0EpD1P process; and finally obtaining the bamboo fluff pulp which has high whiteness, low DCM extract content, low ash content and long fiber length, contains 4.2-4.6 million fibers per gram, and has relatively high bulkiness.

公开(公告)号：US10103373B2

公开(公告)日：2018-10-16

申请号：US14762716

申请日：2013-01-23

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Jian Hu ,  Jin Long ,  Xiwen Wang

IPC: H01M2/16 ,  H01M2/14 ,  D21H21/16 ,  D21H25/02 ,  D21H25/14 ,  D21H27/38

Abstract: Diaphragm paper, and a preparation method and an application thereof. The diaphragm paper comprises a first layer, a second layer, and a third layer, wherein the second layer is located between the first layer and the third layer; the first layer and the third layer are loose layers, of which the average aperture is larger than 10 μm and the basis weight is 5 to 30 g/m2; and the second layer is a compact layer, of which the average aperture is smaller than 5 μm and the basis weight is 2 to 15 g/m2. The compact layer has small aperture and good insulating performance, and is capable of effectively insulating a positive electrode and a negative electrode. The loose layers have good liquid permeability and electrolyte absorptivity, and can guarantee the discharge performance of a battery. The material is further advantageous in having good dimensional stability and being thin, so that a battery can achieve high capacity.