จำนวน Repository ( 12 )

The application of coconut meal, corncob and durian peel as  wood-substituted biocomposites in medium density fiberboard
The application of coconut meal, corncob and durian peel as wood-substituted biocomposites in medium density fiberboard

This research aims to study the application of coconut meal corncob and durian peel as wood-substituted biocomposites in medium density fiberboard. The fiber: urea formaldehyde glue: isocyanate glue with polymeric diphenymethane diisocyanate type (pMDI) ratio is equal to 1: 0.13: 0.003. The fibers are taken from coconut meal corncob and durian peel that 7 ratios are used to all of fiber mixing. The fiberboard production use 130?C of temperature with 20 – 50 kg/sq.cm of compressive pressure with 8 minutes per piece of rate. Their fiberboards have 603 – 856 kg/m of density that was tested follow the TIS 876-2547 standard. Resulting the MM33 ratio (coconut meal fibers: corncob fibers: durian peel fibers is equal to 0.33: 0.33: 0.33) and the CC50 ratio (coconut meal fibers: corncob fibers: durian peel fibers is equal to 0.50: 0.25: 0.25) can pass the standard in physical properties and mechanical properties. Moreover their fiberboards have good thermal insulation

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The application of kaolin with coconut meal, plywood from corncobs and durian peel in concrete masonry unit wall  for  increasing effective heat  protection and lightweight
The application of kaolin with coconut meal, plywood from corncobs and durian peel in concrete masonry unit wall for increasing effective heat protection and lightweight

This research aims to study the application of kaolin with coconut fiber corncobs fiber and durian peel in concrete masonry unit wall for increasing effective heat protection and lightweight. The ratio of cement type 1: kaolin is equal to 1: 60 by weight. The kaolin is replaced by fiber include coconut fiber corncob fiber durian peel fiber with 1.67% 3.33% and 5% by weight of kaolin. The kaolin concrete block mixed with fiber sample size is formed to 6.9 x 39 x 19 centimeter with the hydraulic compactor. The samples tested in physical and mechanical properties follow the TIS 58-2533 standard. Resulting their fibers can reduce the density thermal conductivity and compressive strength and increase the changing length and water absorption of kaolin concrete blocks. The kaolin concrete block without fiber has highest compressive strength followed by the kaolin concrete block mixed with corn cob fiber the kaolin concrete block mixed with coconut meal fiber and the kaolin concrete block mixed with durian peel fiber has lowest compressive strength respectively. However their fibers have possibility to be composite materials to reduce weight of kaolin concrete blocks

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การใช้ดินขาวผสม กากมะพร้าว เส้นใยจากต้นข้าวโพดและเส้นใยจากเปลือกทุเรียนเพิ่มประสิทธิภาพการป้องกันความร้อนและลดน้ำหนักในผนังคอนกรีตบล็อก
การใช้ดินขาวผสม กากมะพร้าว เส้นใยจากต้นข้าวโพดและเส้นใยจากเปลือกทุเรียนเพิ่มประสิทธิภาพการป้องกันความร้อนและลดน้ำหนักในผนังคอนกรีตบล็อก

This research aims to study the application of kaolin with coconut meal plywood from corncobs and durian peel in concrete masonry unit wall for increasing effective heat protection and lightweight. The ratio of cement type 1: kaolin is equal to 1: 60 by weight. The kaolin is replaced by fiber include coconut meal fiber corn cob fiber durian peel fiber with 1.67% 3.33% and 5% by weight of kaolin. The kaolin concrete block mixed with fiber sample size is formed to 6.9 x 39 x 19 centimeter with the hydraulic compactor. The samples tested in physical and mechanical properties follow the TIS 58-2533 standard. Resulting their fibers can reduce the density thermal conductivity and compressive strength and increase the changing length and water absorption of kaolin concrete blocks. The kaolin concrete block without fiber has highest compressive strength followed by the kaolin concrete block mixed with corn cob fiber the kaolin concrete block mixed with coconut meal fiber and the kaolin concrete block mixed with durian peel fiber has lowest compressive strength respectively. However their fibers have possibility to be composite materials to reduce weight of kaolin concrete blocks.

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การใช้กากมะพร้าว ตันข้าวโพดและเปลือกทุเรียนเป็นวัสดุประกอบชีวภาพทดแทนไม้ในแผ่นใยอัดความหนาแน่นปานกลาง
การใช้กากมะพร้าว ตันข้าวโพดและเปลือกทุเรียนเป็นวัสดุประกอบชีวภาพทดแทนไม้ในแผ่นใยอัดความหนาแน่นปานกลาง

This research aims to study the application of coconut meal corn cob and durian peel as wood-substituted biocomposites in medium density fiberboard. The fiber: urea formaldehyde glue: isocyanate glue with polymeric diphenymethane diisocyanate type (pMDI) ratio is equal to 1: 0.13: 0.003. The fibers are taken from coconut meal corn cob and durian peel that 7 ratios are used to all of fiber mixing. The fiberboard production use 130°C of temperature with 20 – 50 kg/sq.cm of compressive pressure with 8 minutes per piece of rate. Their fiberboards have 603 – 856 kg/m of density that was tested follow the TIS 876-2547 standard. Resulting the MM33 ratio (coconut meal fibers: corn cob fibers: durian peel fibers is equal to 0.33: 0.33: 0.33) and the CC50 ratio (coconut meal fibers: corn cob fibers: durian peel fibers is equal to 0.50: 0.25: 0.25) can pass the standard in physical properties and mechanical properties. Moreover their fiberboards have good thermal insulation.

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ฟิล์มคอมโพสิตชีวภาพจากแป้งมันสำปะหลังเสริมแรงด้วยเส้นใยเซลลูโลสเปลือกทุเรียน
ฟิล์มคอมโพสิตชีวภาพจากแป้งมันสำปะหลังเสริมแรงด้วยเส้นใยเซลลูโลสเปลือกทุเรียน

This research aimed to develop compound of prototypes polymer bio-composites from cassava starch (CS) reinforced with agriculture residue the rind of durian fruit. Cellulose extracted from durian rind using hot sodium hydroxide and bleaching treatment with hydrogen peroxide. The removal of lignin and hemicellulose components from durian rind were investigated by fourier transform infrared spectroscopy (FT-IR). Cassava starch bio-composite films were prepared by solution-casting technique which includes 0-50 wt% of durian rind (DR) or durian rind cellulose (DRC) as reinforcement agent and urea/glycerol (GU ratio = 50:50) as plasticizer. The physical and chemical properties of thermoplastic starch (TPS)/DR and TPS/DRC bio-composite films were investigated. The percent elongation at break of bio-composite films were increased when compared to control CS film. From 15TPS/DR (80/20) films showed increase the elongation at break from 7.28 to 14.00% when compared to CS control films. While 15TPS/DRC (80/20) bio-composite films exhibited that the highest elongation at break to 77%. Durian fiber (DR or DRC) loading decreased the water absorption of plasticized bio-composite films. Furthermore incorporation of DRC in composite can be enhanced film stability in water better than DR. Therefore the effect of DRC reinforcement agent on TPS bio-composite films can improve water resistance and mechanical properties especially in terms of flexibility. Finally the waste of bio-composite films was degraded completely in soil burial test.

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