液晶玻璃间隔纸抄造工艺的研究

Study on Preparing Technology of LCD Glass Spacer Paper

关键词:  打浆度  透气度  湿纸幅强度  解键剂

Key Words:beating degree  air permeability  wet web strength  debonding agent

摘要:透气度是液晶玻璃间隔纸重要的指标，湿纸幅强度与成纸透气度性能之间相互矛盾，对液晶玻璃间隔纸的抄造带来影响，为了在不损失液晶玻璃间隔纸所需湿纸幅强度的同时改善其成纸透气度，本课题研究了纤维种类、打浆度及解键剂用量对液晶玻璃间隔纸湿纸幅强度和成纸透气度的影响。结果表明，解键剂与打浆的协同作用可有效提高液晶玻璃间隔纸的湿纸幅强度并保证其成纸透气度；将针叶木浆（32°SR）、阔叶木浆（22°SR）按20∶80配比混合，然后添加0.50%的解键剂抄造的液晶玻璃间隔纸，其湿纸幅强度为0.83 kN/m，成纸透气度为162.6 μm/Pa·s，可满足液晶玻璃间隔纸对湿纸幅强度及成纸透气度的要求。

Abstract:Air permeability is an important index of LCD glass spacer paper. The contradiction among the beating degree of fibers, wet web strength and air permeability affect the preparing of LCD glass spacer paper, in order to improve the air permeability of LCD glass spacer paper without sacrificing the wet web strength, the influences of fiber type, beating degree and loading amount of debonding agent on the wet web strength and air permeability of paper were investigated. The experimental results showed that the wet web strength of LCD glass spacer paper could be effectively improved and the air permeability of paper could be ensured by improving the beating degree of the fibers and adding the debonding agent. When softwood pulp with beating degree of 33°SR and hardwood pulp with beating degree of 22°SR were mixed in the proportion ratio of 20∶80 and used as the raw material and adding 0.50% of debonding agent in papermaking, the wet web strength of LCD glass spacer paper was 0.83 kN/m and the air permeability of paper was 162.6 μm/Pa·s, which met the requirements of LCD glass spacer paper in terms of wet web strength and air permeability of paper．