จำนวน Repository ( 7 )
การเปรียบเทียบคุณสมบัติทางกลของวัสดุที่ผลิตจากเส้นใยธรรมชาติเพื่อใช้ผลิตชิ้นส่วนภายในรถยนต์
This research aims to compare the mechanical properties of materials made from hyacinth pineapple and sugarcane fibers and also to study the feasibility of producing automotive interior parts from natural fibers. The 9 specimens that made from natural fiber such as water hyacinth pineapple leaf fiber sugar can and husk and there are also three different binders: glue polymer and polymer plus hardener were produced. All of specimens were controlled mass and density. The specimens were classified into 2 types: 1) thin type with a size of 3.5x14x1 cm in order to test the flexibility 2) thick type with a size of 6.5x6.5x20 cm for testing the ability to absorb energy. The test results showed that the specimen produced from sugar cane and husk using adhesive bonding able to receive bending stress and modulus of elasticity more than other specimens up to 80.63% and 69.19% respectively. While the ability to absorb energy from work piece made from pineapple leaf fiber and husks using polymer bender was able to absorb energy more than other work pieces 51.58%.
การปรับปรุงความเหนียวและความทนแรงกระแทกของพอลิแลกติกแอซิดโดยการใช้น้ำมันถั่วเหลืองที่ผ่านการดัดแปรและเส้นใยธรรมชาติ
This research work was to study the improvement of toughness and impact resistance of polylactic acid (PLA) with modified soybean oil (MSBO) and palm fiber (PF). The detail of this work was divided into three parts. The first was to find the suitable condition for modification of soybean oil with ozonolysis. The second and last parts were to study the effects of MSBO and PF contents on the properties of PLA respectively. For oil modification the reaction times were varied from 0 to 3 hours and the chemical changes in molecules of soybean oil were investigated by Nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopies. The result suggested that the most suitable condition for ozonolysis reaction was 2 hours considering the decrease in double bond between carbon atoms and the increase in hydroxyl group into molecular structure of MSBO. For the effect of MSBO content on mechanical properties it was evaluated by tensile and impact testing. Differential scanning calorimeter (DSC) and scanning electron microscope (SEM) were used for thermal and morphology analyses. The result showed that elongation at break and impact strength of modified PLA by MSBO increased about 89 and 25 % compared to those of neat PLA respectively. MSBO act as the efficient plasticizer for PLA considering the conversion of fracture behavior from brittle to ductile good dispersions of MSBO droplets in PLA and the decrease of glass transition temperature (Tg) with addition of MSBO. The addition of PF improved the impact strength of modified PLA. Strong interfacial bonding between PLA and PF indicated MSBO being both coupling agent for PLA and natural fiber and plasticizer for PLA. For migration test it was found that contents of released heavy metal and migrated chemical from specimens of PLA and PLA/PF composite were under the criteria according to Notification of the Ministry of Public Health (No. 295) B.E. 2548.
การพัฒนาแผ่นใยไม้อัดซีเมนต์จากาการประยุกต์ใช้เส้นใยธรรมชาติจากกากมะพร้าวและต้นข้าวโพด
This research aims to study the application of coconut meal and corncob fiber as high density cement-bonded fiberboard. The cement: fine sand: coconut meal and corncob fiber: water: cement setting accelerator (aluminium sulphate (Al2(SO4)3) calcium chloride (CaCl2) sodium silicate (Na2SiO3)) ratio is equal to 1: 0.2: 0.05: 0.3: 0.03 by weight. The fibers are taken from coconut meal: corncob that 5 ratios are used following: 0.0500: 0 (CN0) 0.0375: 0.0125 (CN25) 0.0250: 0.0250 (CN50) 0.0125: 0.0375 (CN75) and 0: 0.0500 (CN100) by weight. 12% of Sodium Hydroxide (NaOH) was used to modify the fibers by using 1: 10 of fiber: solution and boiling 100 degree of Celsius (1-3 hours). The fiberboard production use pressure casting in normal temperature (30 – 35 degree of Celsius) and 0.75 g/cm3 of density. Resulting the CN75 ratio is suitable ratio which pass TIS 878-2537 standard (cement bonded particle board: high density) and has good physical properties mechanical properties and thermal insulation. The most suitable cement setting accelerator is calcium chloride (CaCl2).
การพัฒนาแผ่นใยไม้อัดซีเมนต์จากการประยุกต์ใช้เส้นใยธรรมชาติจากกากมะพร้าวและต้นข้าวโพด
This research aims to study the application of coconut meal and corncob fiber as high density cement-bonded fiberboard. The cement: fine sand: coconut meal and corncob fiber: water ratio is equal to 1: 0.2: 0.05: 0.3. The fibers are taken from coconut meal and corncob that 5 ratios are used to all of fiber mixing. The fiberboard production use casting in normal temperature. Resulting the CN75 ratio (coconut meal and corncob fiber is equal to 0.0125: 0.0375) is suitable ratio which pass TIS 878- 2537 standard (cement bonded particle board) and has good physicalproperties mechanical properties and thermal insulation.
การออกแบบเครื่องแต่งกายสำหรับสุภาพสตรีรูปแบบปาร์ตี้แวร์ โดยได้รับแรงบันดาลใจจากผ้ามัดหมี่ย้อมครามชุมชนบ้านเชียง จังหวัดอุดรธานี
This project aims to study and design the costumes for the ladies from parma’s software. Get Inspired by mudmee indigo. Ban Chiang Udom Thani by using concept of bringing mudmee Indigo combined with a costume party software. The study used a descriptive analysis of the skeletal frame of five to the analysis applied Costume designer style party software. The results showed that skeletal outline of the pottery is the Isthmus the width of the mouth or less than the depth of the container. Or slightly greater than the depth of the container. And look round with high and low puff mouth as wide as its body very Long neck and neck therefore a skeletal outline of the pottery application design is an outline of a Shadow outfit. Analysis and design of an analysis of the costume theme party software. The new format is even more universal. Demonstrates a unique application of a distinctive image can be worn in multiple ways. And increasing alternative for those wearing costumes mudmee blue pattern party software.