CAJ | 학술논문

为研究连续热老化与非连续热老化对不同纸张的pH值、机械性能和聚合度的影响，观察脱酸前后的纸张性能与老化方式的相关性，采用非连续热老化，老化8h后间隔16h继续老化，与连续热老化，研究酸性纸张与碱性纸张pH值、抗张强度和聚合度随时间变化情况，并用纤维断裂率计算各老化情况下纸张纤维断裂速率常数。实验结果表明，在非连续热老化方式下，纸张的pH值、抗张强度和聚合度下降均比连续热老化方式快；且各纸张在不同老化方式下的纤维断裂速率分别为KA=10．75×10，KB=16．78×10-3，KC=3．75×10-3，KD=8．36×10-3。从而说明温度的波动对纸张老化具有一定的促进作用，图书保存中应注意环境条件的恒定。同时也进一步证实了碱残留对于降低纸张纤维降解速度具有非常重要的作用。
위연구련속열노화여비련속열노화대불동지장적pH치、궤계성능화취합도적영향，관찰탈산전후적지장성능여노화방식적상관성，채용비련속열노화，노화8h후간격16h계속노화，여련속열노화，연구산성지장여감성지장pH치、항장강도화취합도수시간변화정황，병용섬유단렬솔계산각노화정황하지장섬유단렬속솔상수。실험결과표명，재비련속열노화방식하，지장적pH치、항장강도화취합도하강균비련속열노화방식쾌；차각지장재불동노화방식하적섬유단렬속솔분별위KA=10．75×10，KB=16．78×10-3，KC=3．75×10-3，KD=8．36×10-3。종이설명온도적파동대지장노화구유일정적촉진작용，도서보존중응주의배경조건적항정。동시야진일보증실료감잔류대우강저지장섬유강해속도구유비상중요적작용。
After non- continuous （aging 8h and interrupt 16h） and continuous ageing test, the pH values, tensile strength, and degree of polymerization （DP） of acid - and alkaline - paper was tested. The depolymerization rate constant of various ageing test was calculated by the number average degree of polymerization in different times. Results indicate that under the non - continuous ageing test, the paper＇s pH values, tensile strength, and DP decreased faster than those of the paper under the continuous ageing test. The rate constant of various paper and under different ageing test was KA = 10.75× 10-3, KB = 16.78 × 10-3, Kc = 3.75 × 10-3, and Ko = 8.36 ×10-3, respectively. The fluctuation of temperature can facilitate the aging of paper, so the paper should be conserved under the constant environment condition. The results confirm the significant role of alkaline reserve in paper for slowing the degradation processes induced by different accelerated methods.