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Research on Improving the Performances of Recycled Fibers with Mechanically Refining of Chemical Pulp
Received:June 01, 2024  
DOI：10.11980/j.issn.0254-508X.2024.12.010
Key Words:chemical pulp  recycled fiber  mechanically refining  hornification
Fund Project:福建省工业引导性（重点）项目（2022H0013）。
Author NameAffiliationPostcode
CHEN Mengying College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108
National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials， Fuzhou， Fujian Province， 350108 		350108
HUANG Liulian College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108
National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials， Fuzhou， Fujian Province， 350108 		350108
HUANG Fang College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108
National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials， Fuzhou， Fujian Province， 350108 		350108
CHEN Lihui College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108
National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials， Fuzhou， Fujian Province， 350108 		350108
ZHAO Kai Liansheng Paper （Longhai） Co.， Ltd.， Zhangzhou， Fujian Province， 363107 363107
WU Jianmin Liansheng Paper （Longhai） Co.， Ltd.， Zhangzhou， Fujian Province， 363107 363107
MIAO Qingxian* College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108
National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials， Fuzhou， Fujian Province， 350108 		350108
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Abstract:The bleached kraft hardwood pulp was used to simulate the paper recycling process， and the PFI refining was used to study its effects on the recycled fiber properties and the physical properties of resulted paper. The results showed that mechanically refining treatment during fiber recycling could significantly improve the performances of fibers and their papers. Compared with fibers without mechanically refining treatment， the decrease in water retention value and degree of hornification of fibers after mechanically refining treatment were reduced. The tensile index， tearing index， and bursting index of paper were increased， respectively. The specific surface area， average pore volume， and pore size of fibers were higher than those without mechanically refining treatment. Moreover， after being recycled for six times， the fibers treated with mechanically refining still retained more fine fibers on their surface， resulting good bonding between the fibers.
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