Abstract
The composite paper was made successfully from the heterogeneous mixture of common pulp and slag-wool fibers,without/with different amounts of composite addictives. These physical properties, including tensile strength,folding endurance, and smoothness, etc., were investigated in detail. All physical properties of the composite paper,made from the 30% slag wool fibers & 70% paper pulp, and no any composite addictive, decrease sharply, incomparison with common paper. While for the same paper with addition of optimum amount (0.5%) of compositeaddictives, the tensile strength increases by 15%, while the folding endurance, by 40%. Therefore, it is vital tointroduce composite addictives in the process of composite papermaking. The aforementioned investigation canreduce the amount of paper pulp, and therefore, protect our forest resource.
Highlights
Preparation of beating and handsheetsKraft pulp was beaten up to about 45°Schoppe rriegler (SR) by ZT4-00 23 beater, with a wet-weight of 6 g
Kraft Pulp: from Russia, 45° Schoppe rriegler (SR); slag wool fibers (SWF): thrown by high-temperature Blast-furnace slag (BFS); and home-made composite addictives
Due to short and brittle SWF, as well as difficult to bind with plant fibers, it is reasonable for the strength indexes, such as tensile strength and folding endurance, to be lowered with increasing SWF content
Summary
Kraft pulp was beaten up to about 45°SR by ZT4-00 23 beater, with a wet-weight of 6 g. The SWF was treated by some organic agent, and beaten by the beater to about 7°SR, with the wet-weight of 0.3 g. Both kinds of pulp were mixed according to the ratio, and the SMF was fully dispersed into the plant pulp. After the addictives were added into the composite pulp one by one, and mixed homogeneously, the handsheets were conducted on the sheet former, with the weight of 60 g/m2. The formed sheet can be obtained after the handsheets were dried on the one-side glazed dryer [Qu, 1992].
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