Melt
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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SUBJECT of the Invention A melt|dissolution pulp sheet useful as a viscose rayon or a raw material for cellulose derivative manufacture， especially the melt|dissolution pulp sheet which is excellent in the filterability of a viscose solution are provided. PROBLEM to be solved The area of an undisaggregated piece (1 mm or more in the dissolving pulp slurry prepared on condition of the following and 10 mm or less) measures 30 % or less with respect to melt|dissolution pulp sheet whole area， The melt|dissolution pulp sheet characterized by the above-mentioned. (Following: The melt|dissolution pulp sheet cut out to 1 square cm is thrown into the sodium hydroxide aqueous solution with a density|concentration [ 18.2% of ] of 20 degreeC so that it may become 4% of solid content concentration， It stirs for 60 minutes and makes it disaggregate at 500 rpm to make a dissolving pulp slurry， An undisaggregated piece (1 mm or more and 10 mm or less) is extract|collected after neutralization， The ratio of the total area of the above-mentioned undisaggregated piece in melt|dissolution pulp sheet whole area is computed.) SELECTED DRAWINGS Absence
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
