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Research on Manufacturing Engineering of Scrimber of Sunflower Stalk

Author: WenYaoLong
Tutor: ChenGuiHua
School: Central South University of Forestry Science and Technology
Course: Wood Science and Technology
Keywords: Sunflower stalk Scrimber Pretreatment manufacturing engineering
CLC: TS653
Type: Master's thesis
Year: 2007
Downloads: 24
Quote: 0
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Abstract


With the world forest reserves shortage, wood supply strained day by day, that have already accepted grave effect, wood and the artificial board childbirth, but the need is increasing by year by year.Our country is that a agriculture Great Power, breed much output are very important, Just sunflower stem output about 17~20 million ton’s right away。Current mainly serves as the fuel and the feed, or directly burns down processing in the field. Not only created the resources waste, moreover its smog dust seriously to pollute the local atmospheric environment, and affected some airports and the highway. If about 2 million tons takes as the raw material with its 10%, may produce 1,500,000 m3 imitation sheet material at least, may replace 5 million m3 logs, be beneficial to saving wood, the peasants’ income,having protected the environment, increasing by at the same time,too.The structure and the chemical composition of Sunflower areapproximate to the broad-leaf material, but its structure is fluffy, and the lignin and the cellulose content are less in it, also more marrow。Thus own intensity is so low。And the waxiness included in the sunflower stalk surface also affects the agglutination, but it process easy. Our research according to sunflower stalk, be tied in productive technology of Scrimber, in the condition of undestroying direction intensity of the sunflower stalk, which become loose netlike by knocking and rolling, then give the glue, group base molding, hot-pressing, it will become one kind of new model material of construction. Comparing with the product that the available produces of Sunflower stalk, it has made use of the Sunflower stalk direction fibre intensity sufficiently, which is easier to process the loose netlike than wood raw material. It can reach, exceed the reality wood intensity even.It will be with high performance and high added value.That manufacture accords with the industrial policies and environmental protection policy of state, which is important to the ecological environment producing life need, saving wood resource and so on. At the same time it is feasibility.We carry out analysis on outside of sunflower stalk in the SEM and the EDAX which show that the surface of sunflower stalk is consist of four species elements as C, 0, Si, H. Epidermis principal constituent is SiO2.Determine by contacting an angle and agglutination performance, which shows that rawing are better than removing epidermis.That the sunflower soaking 2 hours or so in the water in laboratory. Then processing knocking,which makes it breaking which becoming sunflower stalk to pieces being the idealest.Adopt the group base way that shop of fibre of equal rank holds with, using UF and PF glue to carry out the best method of the hot-pressing handicraft, gets optimum hot-pressing of UF glue hot-pressing handicraft is 10% glue, the temperature is 120℃,19 tminutes hot-pressing time and 4.5 MPa pressure. PF glue hot-pressing handicraft is 10% glue, the hot-temperature is 140℃,19 minutes hot-pressing time and 4.5 MPa pressure. The research for Scrimber of the sunflower stalk has opened up a new train of thought to artificial board develops and future building material.

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CLC: > Industrial Technology > Light industry,handicrafts > Wood processing industry,furniture manufacturing industry > Processing > Wood-based panel production
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