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Now environment protection and resources conservation is rising on a global scale and carried out a green wave protection. The green rampart that formed on foreign trade was exerted a tremendous influences for product export in China. Therefore, the development countermeasure is urgent to be studied in order to help the industries in China placidly pass through the crisis. Based on survey reports...
There is the theology of the plywood formaldehyde-emission which is similar to the solid and the liquid. The mature theory of rheological is applied to study on the mechanism of the plywood formaldehyde-emission in this paper, and the loose models of the plywood formaldehyde emission are created. The formularies FM = F0e-0.1429t and P = P0/k(1-e-0.1429t) can be received and used to describe the influence...
Bamboo wood especially the Phyllostachyspubescens is extremely abundant in our country, however, the high moisture content and easy to mildew and decay has limits it widely application in solid material. In this study, a novel carbonization with low temperature and non-smoke is introduced, and whole factor analysis method and variance analysis are used to find a novel and optimized process parameter,...
Wood-based composites is widely used in building and interior decoration field. However, it is easy for wood to get burnt, and abundant toxic smoke generating during the burning process has caused great casualties and property loss. In this study, poplar wood was chosen as test materials, and three fire-retardant were selected, i.e. the inorganic X type fire-retardant and the organic fire-retardant...
Wood is widely used as the materials for architecture, furniture and interor decoration. However, the conflagration is so serious that the fire retardant treatment has become urgent for wood materials. As more and more stress is laid on health and environment protection, fire retardant develops toward low toxicity and smoke suppression. In order to explore a low-toxic and highly-efficient fire retarding...
In order to overcome the above-mentioned negative effects, the extractives of the fresh Cunninghamia lanceolata shavings, which were obtained by using both the sorbitic-extracting approaches, were analyzed by ZETA and SIZER to find out the leaching rule of nano particles in Chinese-fir wood. The results are as follows: (1) The extraction mass arrived at the maximum value when NaOH concentration is...
As one of the most expensive wood trees, Ormosia henryi has been planted more than 1000 mu in South China now. A mass of Ormosia henryi leaves was naturally abandoned and degradable so that the resources were wasted. Therefore, in order to overcome the negative effects, Py-GC/MS was used to analyze the extractives of Ormosia henryi leaves. Relative content of each component was determined by area...
Phenol-formaldehyde resin is used as the most adhesive to produce waterproof plant-based composite. However, this product contains phenol and formaldehyde which can be easily released to pollute air. Based on the single-factor method, the effect of nano SiO2 on situation of pyrolytic reaction of PF resin was studied by Py-GC/MS. The results were shown that the components of PF by Py-GC-MS analysis...
Phyllostachys heterocycla is mainly used for pulping. But water and other chemical aids are severely wasted because the content of extractives is high. What's worse, water pollution from the extractives is very serious in South China. Therefore, the acetone extractives of Phyllostachys heterocycla chips were identified by Py-GC/MS. The acetone extractives contains 80 compounds namely lupan-3-one (8...
Gigantochloa ligulata is both a wide use as biomatrals and an antiquity as medicine. It contains many kinds of organosufide compounds. Therefore, Py-GC/MS was used to analyse and evaluate the application potential of Gigantochloa ligulata for biomedicine. The results indicated that the main components of the Gigantochloa ligulata by Py-GC/MS were carbon dioxide (19.67%), acetic acid (16.08%), acetone...
Now the wood multi-layer floor industry in China is not relating to ecological environment construction for severe pollution, low utilization rate of raw materials, high energy consumption and low products extra value. Therefore, the development countermeasure is urgent to be studied in order to help the wood multi-layer floor industry in China placidly pass through the crisis. Based on survey reports...
The increasing demand for paper in Asia is being met by the use of Eucalyptus urophylla to a large extent. However, some pulp mills may be forcedly closed because the Eucalyptus urophylla chips contain extractives severely enough to pollute the water. In this paper, the chemical components in the benzene/ethanol extractives of Eucalyptus urophylla chips were isolated and identified by Py-GC/MS to...
Much waste wood causing pollution and energy waste was produced in the processing of Pinus massoniana wood. However, hemicellulose extracted from Pinus massoniana waste can be transformed into bioenergy by means of pyrolysis, gasification, liquefaction, etc. Therefore, effects of deresination technology on extracting hemicellulose from Pinus massioniana were investigated by orthogonal and the whole...
Both stabilizer and couple-agent can affect the melt index of composite materials. Moreover, the different varieties of same stabilizer and couple-agents also results in the difference of melt index of composite materials. The result of melt index test showed that, under the test condition of load 21.6 kg and temperature 190 degC, the melt index of bamboo-plastic composite which was added hot stabilizer...
As a ideal raw material in bioenergy, extractives of Cunninghamia lanceolata wood are severely wasted. Therefore, the chemical components from Cunninghamia lanceolata wood were extracted with benzene /ethanol and identified by Py- GC/MS after concentration. Relative content of each component was determined by area normalization. 83 compounds of the extractives were identified. The main constituents...
Wood extractives for bioenergy with high additional value is looked upon as a strategy task. In this paper, the chemical components in the benzene/ethanol extractives of Eucalyptus urophylla wood were isolated and identified by Py-GC/MS so as to increase economic benefits. In this paper, the chemical components in the acetic ether extractives of Eucalyptus urophylla wood were isolated and identified...
As a waste in pulp, the acetone extractives of Eucalyptus urograndis wood severely polluted the water and wasted a lot of bleaching agents. Therefore, Py-GC/MS was used to analyze high-grade bioenergy utilization of acetone extractives of Eucalyptus urograndis wood. The relative content of each component was determined by peak area normalization. 33 compounds in the extractives were identified. The...
Bambusa blumeana is the one of the most impotent bamboo species in South China. In order to exploit the high- grade resource utilization as bioenergy, determination of chemical components in Bambusa blumeana was made by using Py-GC/MS. Results indicated that the main components of Bambusa blumeana by Py-GC/MS analysis were carbon dioxide (30.99%), acetic acid (13.67%), tuaminoheptane (9.81%), diazene,...
Chinese fir is one of the most important species in plantation-grown forest in South China and been widely used in many fields. However, the properties of strong moisture absorption and weak dimensional stability limit its development. The introduction of thermal treatment and carbonization has repaired this defect in certain extent but at the cost of high energy-consumption. In this paper, whole...
Wood extractives for bioenergy with high additional value is looked upon as a strategy task. In this paper, the chemical components in the benzene/ethanol extractives of Eucalyptus urophylla wood were isolated and identified by Py- GC/MS so as to increase economic benefits. The relative content of each component was determined by peak area normalization. 73 compounds in the extractives were identified...
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