构皮纤维绝缘纸的制备工艺优化及其性能研究

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关键词：构皮；绝缘纸；电气性能

中图分类号：TS761.2 文献标识码：A DOI：10.11980/j.issn.0254-508X.2026.04.001

Optimizationof PreparationProcessandPerformance Studyof Broussonetiapapyrifera Bark Fiber Insulating Paper

ZHANG Tian'LI Junrong'CUI Huize² GU Wenwen²ZHANG Chong² QIAN Liying1，* （1.SchlofLightIndustryandEnginering，SouthChinaUniversityofTechnology，Guangzhou，GuangdongProvince，10640; 2.China Electric Power Research Institute，Beijing，100192） （ E-mail：lyqian@scut. edu. cn）

Abstract：Toinvestigatethfeasibilityandapplicationpotentialofusingon-woodfbersforelectricalinsulatingpaper，thissudyused Brousonetiappferarkfbasatealndprepredrousoetiapiferaarkppervialnthqnoeligdc id/agesiumsalturatioessameeseod，inogaliceatoriatii refiningdegre.Furthermore，theisulatingpaperasedonBrousoetiapapyrfeabarkfiberwaspreparedbyimpregationwitisulating oilndialislairochedogthdtcsllisgpfaca ed. The results showed that under the conditions of NaOH concentration of 19g/L ， liquor-to-solid ratio of ，and cooking at 140 for （20 2h ，the pulp yield reached 36.5% ，with relatively low ash and lignin contents.After purification with 5% hydrochloric acid，the ash content decreased to 0.23% ，and the Na+ content was reduced to 13.7mg/kg . After treatment with 2% magnesium bicarbonate，the pH value of the pulp extract solution reached 7.1 and the conductivity decreased to 44.0μS/cm . When the refining degree was 83 °SR，the AC and DC breakdown strengths of the insulating paper made from NaOH-cooked Brousonetia papyrifera bark pulp reached 157 and 279kV/mm ，respectively. Its dielectric loss tangent at the power frequency of 50Hz was 0.40% ，comparable to that of commercial insulating paper made fromsoftwoodeggiisulaigla5Cfo3das，geofleztiooftrooneapfeaki lating paper decreased from 1755 to 1471，indicating good thermal stability.

Keywords：Broussonetia papyrifera bark；insulatingpaper;electrical properties

特高压电网建设是中国电力工业向更高水平发展的必经之路，变压器是电力输送和能量转换的主要枢纽设备2，其稳定性直接关系到整个输电系统的安全。（剩余19492字）