摘要:According to the production condition in Feng County plywood Mill Jiangsu Province,apractical programming model for the poplar plywood mill was developed.Production procedurces,product combination,product mix,selling price working capital,raw material supply,designingcapital and market restrictions were included.This model can be used for analysing plywood mar-ket competition and for keeping the balance between face veneer,back veneer and core veneer.
摘要:Reed and flax stalk was used as raw materials for making particle board.We had notonly investgated some important technological parameters including ratio of reed and flax stalk ad-hesive modification and hot pressing but also established a optimal manufacture technology ofmaking particle board According to the experiment result, when the ratio of reed/flax was 30percent,the bending strength and thickness swelling of the board could reach the first-grade re-quirement of GB/T 4879 92,but the internal bonding strength was lower than the standard ofGB/T 4897 92.We shall further study the adhesive modification and the surface treatment ofreed,to improve the properties of particle board from reed and flax stalk.
摘要:On the base of previous ration measurement and systemic analysis on wood visual phys-ical magnitude(VPM)of 110 Chinese commercial species, 41 typical species which represent woodcolor range of all species were selected for visual psychological sensation test.Features of visualenvironmental science on major parameters of wood VPM were analyzed.Psychological test andanalysis showed. That these were relativity and intrinsic connection between wood VPM and visualpsychological magnitude.Synthetical VPM 1~3 possessed relativity with visual psychologicalmagnitude.
摘要:Modification of linear low density polyethlene(LLDPE ) with maleic anhydride(MA)was studied and suitable conditions for LLDPE-MA copolymer preparation in the manufacture ofwood fiber-plastic composites were found.The test data of infrared spectra(IR)and graft-rate de-termination showed the existence of polar groups in the non-polar LLDPE-MA molecule. The results also showed the formation of LLDPE-MA copolymer can be obtained by free group initiationand the extent of reaction of MA to LLDPE can be improved by changing process conditions. Thecopolymer obtained in this study would be very useful for making wood fiber-plastic composite.