A kind of special sepiolite fiber for papermaking and preparation method thereof

Abstract

The invention belongs to the field of inorganic mineral fiber and particularly relates to sepiolite fiber special for paper making and a preparing method thereof. The sepiolite fiber is characterized by being flexible fiber formed by layered fiber sepiolite, carbon nanometer tubes and cyclodextrin in a penetrating and inserting mode and provided with a network structure. According to the sepiolite fiber, ultrasonic waves are utilized for dispersing to enable the acidified carbon nanometer tubes to penetrate and insert into the layered structure of the sepiolite fiber, and the sepiolite fiber and cyclodextrin molecules react under radiation of oxygen plasmas, so that the cyclodextrin molecules wrap the surface of the sepiolite fiber, strength and toughness of the fiber are improved, and damage to the fiber structure from mechanical force in the papermaking process is avoided; meanwhile, active groups on the surface of the sepiolite fiber are increased, softness and dispersibility of the sepiolite fiber are improved, and binding force of the sepiolite fiber and plant fiber is increased. When the sepiolite fiber is used for manufacturing paper, the softness of the paper can be improved obviously, and the paper is good in handfeel and light.

Description

technical field [0001] The invention belongs to the field of inorganic mineral fibers, in particular to a special sepiolite fiber for papermaking and a preparation method thereof. Background technique [0002] The paper industry plays an important role in the global economy and civilization, and its output value accounts for 2.5% of the world's total industrial output value and 2% of the world's total trade. Wood is the main raw material of the papermaking industry, accounting for more than 93% of the raw materials for papermaking. my country is a country lacking in forest resources. The grass plant fibers mainly used in papermaking are difficult to recycle waste liquid and prevent pollution during the pulping process. It has a serious impact on the environment, so it is of great significance to seek new non-plant fiber substitutes. my country has relatively rich mineral fiber resources. Using mineral fiber to replace part of plant fiber as pulp raw material can not only red...

AI Technical Summary

Problems solved by technology

The brittleness of sepiolite fiber is strong, and the fiber structure is easily destroyed during processing and sheet forming, resulting in shorter fiber length and hindering the hydrogen bonding between fibers, making it difficult for sepiolite fiber to exert its network support property, which reduces the strength performance of the paper sheet, and with the increase of the added amount of sepiolite fiber, it will also have a certain degree of adverse effect on the paper performance, especially the strength index.