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Effect of Bleached Chemical Eucalyptus Pulp Incorporation on Physical Properties of Calcium Silicate Board
Received:April 29, 2022  
DOI：10.11980/j.issn.0254-508X.2023.02.008
Key Words:softwood pulp  bleached chemical eucalyptus pulp  calcium silicate board  physical property
Author NameAffiliationPostcode
CHU Shouxing State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
YANG Rendang State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
CHEN Jingfu Sanle Building Materials Group， Zhaoqing， Guangdong Province， 526238 526238
WANG Yang* State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 510640
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Abstract:In this paper， the effect of blending bleached chemical eucalyptus pulp in the preparation of calcium silicate board on the physical properties of calcium silicate board was studied. The results showed that compared with the blank sample （only added unbleached kraft softwood pulp）， when 20% bleached chemical eucalyptus pulp was added instead of unbleached kraft softwood pulp， the bending strength of calcium silicate board was 17.3 MPa， impact strength increased from 9.5 kJ/m2 to 10.5 kJ/m2， interlayer bonding strength reached 1.54 MPa. Porosity and water absorption reached the best balance point. In addition， the results of scanning electron microscope and fourier infrared spectroscopy analysis showed that the physical properties and micro crystal form of calcium silicate board were not significantly affected by the addition of bleached chemical eucalyptus pulp.
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