vacuum-pressure treatment of rubberwood(hevea brasiliensis
VACUUM-PRESSURE TREATMENT OF RUBBERWOOD (HEVEA USING BORON
rubberwood treatment and industrial demand for a cost-effective process, a vacuum-pressure impregnation method is the most viable option. Pressure treatment will give much better chemical loading, deeper and more uniform penetration of preservative in a short time (Tan et al. 1980, 1983, Hong et al. 1982, 1987, Salamah et al.
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Vacuum-pressure treatment of rubberwood (Hevea
Rubberwood is highly susceptible to biodegrading organisms. To minimize this problem, effective preservative treatment needs to be carried out immediately to ensure that the timber is fully protected.
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Pressure treatment of rubberwood (Heavea brasiliensis
The pH values of MCA dispersion and CCA solution used for vacuum-pressure treatment were 7.5 ± 0.5and 2.3 ± 0.2 respectively. 2.3. Preservative treatments. The pressure treatments procedure included an initial vacuum of 635 ± 50 mmHg for 30 min. followed by 60 or 120 min. pressure at 1.17 ± 0.03 MPa.
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VACUUM-PRESSURE TREATMENT OF RUBBERWOOD (HEVEA
To minimize this problem, effective preservative treatment needs to be carried out immediately to ensure that the timber is fully protected. Generally, a pressure treatment process would be adopted to force high preservative loading into the outer layer of the timber, followed by natural diffusion process of the preservative into the core area during seasoning.
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Enhancement of Hevea brasiliensis properties through
application of vacuum-pressure treatment. The production of creamy-white colour wood coupled with better working qualities will definitely ensure strong continuous demand for rubberwood by the local wood-based industries in the future. On the other hand, Flexner (2005) stated that there are three types of bleach used in woodworking;
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Why Rubberwood Is Not Sustainable | DCI Furniture
Rubberwood is a species used by some furniture manufacturers in the residence hall furniture market. It’s also known as parawood, Hevea Brasiliensis and Asian Oak. When it comes to the ‘environmental’ moniker, it’s somewhat misleading and more marketing than genuine stewardship of the earth.
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Assessment of the properties, utilization,
variation of the vacuum-pressure process and is appropriate for treating rubberwood with high moisture content using nondiffusible preservatives or for treatment of refractory
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Durability of rubberwood (Hevea brasiliensis) treated
1. Introduction. Rubberwood (Hevea brasiliensis) lumber obtained from cut down 25–30-year-old plantation-grown rubber trees has long been used as raw material for furniture production (Balsiger et al., 2000) in which the lumber is generally impregnated with chemical preservatives such as boron to protect against insect borers and fungi (Gnanaharan and Dhamodaran, 1993).
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Rubberwood
Rubberwood is a light-colored medium-density tropical hardwood obtained from the Pará rubber tree (Hevea brasiliensis), usually from trees grown in rubber plantations. Rubberwood is commonly advertised as an "environmentally friendly" wood, [2] as it makes use of plantation trees that have already served a useful function.
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Hevea brasiliensis
Hevea brasiliensis, the Pará rubber tree, sharinga tree, seringueira, or, most commonly, the rubber tree or rubber plant, is a tree belonging to the family Euphorbiaceae. It is the most economically important member of the genus Hevea because the milky latex extracted from the tree is the primary source of natural rubber .
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Vacuum-pressure treatment of rubberwood (Hevea brasiliensis)
Request on ResearchGate | Vacuum-pressure treatment of rubberwood (Hevea brasiliensis) using boron-based preservativeRubber trees were introduced into the Malay Peninsula more than a century ago. The normal economical lifespan of a rubber tree is about 25 years, and, traditionally
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Vacuum-pressure treatment of rubberwood (hevea
Received January 2007 SALAMAH, S. & MOHD DAHLAN, J. 2008, Vacuum-pressure treatment of rubberwood (Hevea brasiliensis) using boron-based preservative. Rubberwood is highly susceptible to biodegrading organisms. To minimize this problem, effective preservative treatment needs to be
Send InquiryAssessment of the properties, utilization, and
Rubber trees were introduced into the Malay Peninsula more than a century ago. The normal economical lifespan of a rubber tree is about 25 years, and, traditionally, rubberwood was used as firewood by the rural community. In recent decades, rubberwood has become an important timber for
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preservative treatment of rubber wood (hevea brasiliensis)
KFRI Research Report 15 PRESERVATIVE TREATMENT OF RUBBER WOOD (HEVEA BRASILIENSIS) R.Gnanaharan George Mathew KERALA FOREST RESEARCH INSTITUTE PEECHI, THRISSUR December 1982 Pages:16 CONTENTS Page Abstract File r.15.2 1 Introduction 1 r.15.3 2
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Rubberwood
Rubberwood is a light-colored medium-density tropical hardwood obtained from the Pará rubber tree (Hevea brasiliensis), usually from trees grown in rubber plantations. Rubberwood is commonly advertised as an "environmentally friendly" wood
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Treatment of rubberwood (Hevea brasiliensis) (Willd. ex A. Juss.)
The treatment of wood with 2.5% MA was adequate to prevent the growth of moulds on wood for 1 year at least. The viable count of Aspergillus niger van Tieghem PSU1Ratnasingam Jegatheswaran, Grohmann Rainer (2014): Color development in rubberwood (Hevea brasiliensis) during kiln drying.
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Effect of high temperature processing under - Semantic Scholar
Plantation grown Hevea brasiliensis (rubberwood) was thermally processed in a vacuum-pressure oven in the temperature range of 150–240 °C under two inert environments (vacuum and nitrogen gas) and normal atmospheric pressure (air). Effect of heat treatments on various physical properties of
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Hevea Brasiliensis | Natural Rubber | Landscape
Hevea brasiliensis, the Par rubber tree, sharinga tree, or, most commonly, the rubber tree, is a tree. belonging to the family Euphorbiaceae.South American tropical tree (Hevea brasiliensis) of the spurge family. Cultivated on plantations in the tropics and subtropics, especially in Southeast Asia and
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Preparation of steam activated carbon from rubberwood
Activated carbon was produced from a biowaste product, rubberwood sawdust (RWSD) using steam in a high temperature fluidized bed reactor. Experiments were carried out to investigate the influence of various process parameters such as activation time, activation temperature
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Rubber Tree (Hevea brasiliensis) | Rainforest Alliance
Hevea brasiliensis is a species of rubberwood that is native to rainforests in the Amazon region of South America, including Brazil, Venezuela, Ecuador, Colombia, Peru, and Bolivia. These trees are generally found in low-altitude moist forests, wetlands, riparian zones, forest gaps, and disturbed areas.
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