毛竹在CTMP生产中的应用与探讨

Application and discussion of bamboo in CTMP production

关键词:  毛竹  化机浆  物理强度性能指标

Key Words:bamboo  chemical mechanical pulp  physical strength performance index

摘要:本研究以毛竹为原料，系统探究其在化学热磨机械浆（CTMP）生产中的工艺优化及性能表现。通过调整NaOH用量（5%-20%）和蒸煮压力（450-600 kPa），分析毛竹CTMP浆料的物理强度指标变化规律，并评估其在废纸基包装箱板纸生产中的应用潜力。实验表明，毛竹原料结构致密，软化程度与NaOH用量呈显著相关性：当NaOH用量为10%时，浆料性能最优，耐破指数、耐折度及环压指数分别达1.29 kPa·m2·g?1、4次和8.96 N·m·g?1，较其他组提升显著。此外，蒸煮压力由450 kPa增至600 kPa虽能略微提升部分指标（如耐破指数提高至1.44 kPa·m2·g?1），但整体效果有限，表明NaOH用量是核心影响因素。本研究为毛竹CTMP替代废纸原料提供了工艺优化依据，可缓解纤维资源短缺问题，助力造纸企业降本增效，同时响应“以竹代塑”的可持续发展战略。

Abstract:This study systematically investigates the application of bamboo (Phyllostachys edulis) in chemical thermal mechanical pulp (CTMP) production, focusing on process optimization and performance evaluation. By adjusting NaOH dosage (5%-20%) and steam cooking pressure (450-600 kPa), the physical strength indices of bamboo CTMP pulp were analyzed, and its potential in packaging boxboard paper production based on waste paper resources was explored. Results indicate that the dense structure of bamboo directly correlates with softening efficiency: at 10% NaOH dosage, the pulp exhibits optimal performance, with bursting index, folding endurance, and ring-crush resistance index reaching peak values of 1.29 kPa·m2·g?1, 4 times, and 8.96 N·m·g?1, respectively. Increasing steam pressure from 450 to 600 kPa slightly improved certain indices (e.g., bursting index increased to 1.44 kPa·m2·g?1), but the overall enhancement was marginal, confirming NaOH dosage as the dominant factor. This research provides a technical foundation for utilizing bamboo CTMP as a partial substitute for waste paper, addressing fiber resource scarcity while improving cost efficiency for paper enterprises. It also aligns with the national "Bamboo-for-Plastics" initiative, promoting sustainable development in the pulp and paper industry.