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| Research on the Preparation of Corrugated Board Paper by Blended Papermaking with Chemi-thermomechanical Pulping of Pre-hydrolyzed Corn Straw Substrate |
| Received:March 31, 2025 Revised:June 24, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.11.015 |
| Key Words:corn straw pre-hydrolyzed chemi-thermomechanical pulping OCC pulp corrugated paper |
| Fund Project:宜宾市竹产业重大攻关项目（YBZD202401）。 |
| Author Name | Affiliation | Postcode | | HU Sisi* | College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108） （*E-mail： hll65212@163.com | 350108 | | CHENG Xinlei | College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108） （*E-mail： hll65212@163.com | 350108 | | LIN Danni | College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108） （*E-mail： hll65212@163.com | 350108 | | MIAO Qingxian | College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108） （*E-mail： hll65212@163.com | 350108 | | HUANG Fang | College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108） （*E-mail： hll65212@163.com | 350108 | | HUANG Liulian* | College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108） （*E-mail： hll65212@163.com | 350108 |
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| Abstract:This study used pre-hydrolyzed corn stover-based chemi-thermomechanical pulp (C-CTMP) and old corrugated container (OCC) pulp as raw materials， aiming to enhance the properties of corrugated paper by optimizing refining， blending， and sizing processes. The results showed that after C-CTMP was refined with 5 000 r in a PFI mill (reaching a freeness of 45 °SR)， the paper achieved optimal mechanical properties， including a breaking length of 5.64 km， burst index of 2.60 kPa·m²/g， tear index of 5.40 mN·m²/g， and ring crush index of 8.74 N·m/g. When C-CTMP mass ratio was 40%， the produced corrugated paper exhibited a density of 0.62 g/cm³， breaking length of 4.25 km， and ring crush index of 8.24 N·m/g， all demonstrating favorable mechanical performance. Furthermore， with the addition of 0.25% alkyl ketene dimer (AKD) and 1% dry cationic starch (both based on oven-dry pulp mass)， the corrugated paper achieved a density of 0.60 g/cm³， breaking length of 4.56 km， ring crush index of 8.62 N·m/g， and water absorption Cobb60 value of 13.00 g/m²， meeting the requirements for Grade AAA premium products under GB/T 13023—2008. |
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