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Topic

Technologies and technical equipment for agriculture and food industry

Volume

Volume 76 / No. 2 / 2025

Pages : 900-909

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PREPARATION OF BIOMASS SEEDLING TRAYS USING LIGNIN BONDING PROPERTIES AND DESIGN OF HEATING COMPRESSION FORMING MOLD

基于木质素粘结特性的生物质育苗盘制备及热压成型模具设计

DOI : https://doi.org/10.35633/inmateh-76-77

Authors

(*) Jinyang Li

College of Information and Electrical Engineering, Heilongjiang Bayi Agricultural University

(*) Wei Zhang

College of Engineering, Heilongjiang Bayi Agricultural University

Chuntao Yu

College of Engineering, Heilongjiang Bayi Agricultural University

Liqiang Qi

College of Engineering, Heilongjiang Bayi Agricultural University

Bo Zhang

College of Information and Electrical Engineering, Heilongjiang Bayi Agricultural University

(*) Corresponding authors:

ljy970118@163.com |

Jinyang Li

zhang66wei@126.com |

Wei Zhang

Abstract

In the current agricultural production, widely used plastic seedling trays suffer from poor air permeability, poor water permeability, and slow degradation. Therefore, this study proposes the preparation of degradable seedling trays utilizing the bonding effect of lignin, and the design of a heating compression forming mold according to the size and forming requirements of the trays. Flexural strength of seedling trays and seedling experiments were conducted to verify the effectiveness of the preparation process and mold design. The experiment results showed that the heating function requirements of the mold can be achieved when the heating power of the electromagnetic induction heater was set to 3000 W, and the heating time of the frame was 60 s. The heating compression mold designed can ensure that the seedling trays were heated uniformly and have excellent mechanical properties during the forming process. Biomass seedling trays prepared using lignin bonding and specific raw material ratios performed well in terms of compressive strength, water resistance and degradability. During the seedling cycle, no rupture occurred in the seedling trays, and the growth of maize seedlings was good enough to meet the actual seedling needs. The results of the study provide new ideas and methods for the preparation of lignin bonding degradable biomass seedling trays, and the application of heating compression forming mold provides technical support for the efficient and large-scale production of seedling trays.

Abstract in Chinese

针对当前农业生产中广泛使用的塑料育苗盘存在透气性差、透水性不佳以及难以降解等问题,本研究提出了利用木质素的粘结作用制备可降解育苗盘,根据育苗盘的尺寸和成型需求,设计加热压缩成型模具。为了验证制备工艺和模具设计的有效性,进行了育苗盘抗弯强度及育苗试验。试验结果表明,在电磁感应加热器的加热功率设置为3000W,料框加热时间为60s时,可达到模具的加热功能要求。本研究设计的加热压缩成型模具能够确保育苗盘在成型过程中受热均匀并具有优异的力学性能。利用木质素粘结及特定原料配比制备的生物质育苗盘在抗压强度、耐水性和生物降解性等方面均表现出色。在育苗周期内,育苗盘未发生破裂现象,玉米苗长势良好,能够满足实际育苗的需求。研究结果为木质素粘结型可降解生物质育苗盘的制备提供了新的思路和方法,加热压缩成型模具的应用为育苗盘的高效、规模化生产提供了技术支持。

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