PA热熔胶颗粒的压缩空气干燥模型  

Compressed Air Drying Model of PA Hot Melt Adhesive Particles

作　　者：黄欣然 朱建晓 王克 杨洁 包建东 HUANG Xinran;ZHU Jianxiao;WANG Ke;YANG Jie;BAO Jiandong(College of Automation,Nanjing University of Science and Technology,Nanjing 210094,China;Suzhou KONIG Electronic Technology Co.,Ltd.,Changshu 215562,China)

机构地区：[1]南京理工大学自动化学院,江苏南京210094 [2]苏州康尼格电子科技股份有限公司,江苏常熟215562

出　　处：《塑料工业》2023年第2期96-99,139,共5页China Plastics Industry

摘　　要：针对塑料工业中塑料颗粒干燥问题,研究了以压缩空气作为风源的热风干燥特性及其数学模型,为聚酰胺(PA)热熔胶颗粒干燥工艺提供参考。采用正交试验探索温度及风压对干燥的影响,比较了11种薄层干燥模型的适用性。结果得出不同风温下的水分有效扩散系数Deff为1.0×10^(-9)~3.2×10^(-9)m^(2)/s。PA热熔胶颗粒的干燥活化能Ea为36.438 kJ/mol。描述干燥特性的最佳模型为Logarithmic模型,并进一步给出了0.25 MPa风压下与温度相关的干燥数学模型。Aiming at the drying problem of plastic particles in the plastic industry,the hot air drying characteristics and its mathematical model with compressed air as the air source were studied,which provided a reference for the drying process of polyamide hot melt adhesive particles.The effects of temperature and wind pressure on drying were explored by orthogonal test,and the applicability of 11 thin-layer drying models was compared.The results show that the range of effective moisture diffusion coefficient Deffunder different wind temperatures is 1.0×10^(-9)~3.2×10^(-9)m^(2)/s.The drying activation energy Eaof polyamide hot melt adhesive particles is 36.438 kJ/mol.The best model to describe the drying characteristics is logarithmic model,and a temperature related drying mathematical model under 0.25 MPa wind pressure is provided.

关 键 词：聚酰胺热熔胶 塑料颗粒 压缩空气 干燥特性 干燥模型 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]