Perpindahan panas merupakan ilmu un

Perpindahan panas merupakan ilmu untuk meramalkan perpindahan energi dalam bentuk panas yang terjadi karena adanya perbedaan suhu di antara benda atau material. Material yang dapat menghantarkan panas dengan baik disebut konduktor sedangkan yang kurang baik disebut isolator. Konduktifitas termal merupakan fungsi suhu yang akan bertambah sedikit kalau suhu naik akan tetapi variasinya kecil sehingga sering diabaikan.Dalam penelitian ini difokuskan tentang menentukan nilai tetapan atau nilai konduktifitas termal suatu material komposit resin polyester dengan penambahan partikel montmorillonite (MMT). Penambahan partikel montmorillonite ini dilakukan dengan variasi ukuran partikel, dengan harapan komposit dengan penguat partikel montmorillonite mempunyai sifat isolator dan ketahanan panas yang baik. Metode yang digunakan adalah hand lay up. Variabel yang digunakan meliputi variasi ukuran partikel dengan ukuran mesh 20, 40, 60, 80, 100, 120 dan 150. Dari penelitian diperoleh hasil nilai konduktifitas termal. Nilai konduktifitas termal optimal komposit yaitu sebesar 14 mW/moC, pada ukuran mesh 60. Sedangkan untuk nilai konduktifitas termal minimal komposit sebesar 4 mW/moC, pada ukuran mesh 20. Nilai konduktifitas termal komposit berada di bawah nilai konduktifitas termal sampel kontrol (tanpa penambahan partikel montmoriilonite). Dari analisa data, dapat disimpulkan bahwa semkin besar ukuran partikel maka semakin baik menghambat panas dan kekuatan komposit semakin kuat dibandingkan dengan sampel kontrol.

Hasil (Inggris) 1:

Heat transfer is the science of predicting the displacement of energy in the form of heat that occurs because of a difference in temperature between the objects or materials. Material that can conduct heat well called conductors while the less well called an insulator. Thermal conductivity is a function of the temperature will be increased slightly if temperature rises but small variations are so often overlooked. In this research is focused on determining the value of thermal conductivity values or constants of a polyester resin composite material with the addition of a particle of montmorillonite (MMT). The addition of montmorillonite particles is done by particle size variations, with the hope of composite particle with amplifier has an insulating properties of montmorillonite and good heat resistance. The method used is hand lay up. Variables used include variation in particle size with the size of the mesh 20, 40, 60, 80, 100, 120 and 150. The results obtained from the study of thermal conductivity values. The value of the thermal conductivity of composite optimal i.e. of 14 mW/moC, mesh size 60. As for the value of the thermal conductivity of composite minimum of 4 mW/moC, at the size of the mesh. The thermal conductivity of composite value is below the value of the thermal conductivity of the sample control (without the addition of particles to montmoriilonite). From the analysis of the data, it can be concluded that the large particle size semkin thus inhibit the better the heat and strength of composites more powerful compared to the control sample.

Hasil (Inggris) 2:

Heat transfer is a science to predict the energy transfer in the form of heat that occurs due to a temperature difference between objects or material. A material that can conduct heat well known conductor while the less well known insulator. Thermal conductivity is a function of temperature will increase slightly if the temperature rises but little variation, so often diabaikan.Dalam this research is focused on determining the constant value or the value of the thermal conductivity of a composite material of polyester resin with the addition of particles of montmorillonite (MMT). The addition of montmorillonite particles is accomplished by variations in particle size, in the hope of reinforcing composites with montmorillonite particles having insulating properties and good heat resistance. The method used is the hand lay up. Variables used include variations in particle size with a mesh size of 20, 40, 60, 80, 100, 120 and 150. From the research results of thermal conductivity values. Optimal thermal conductivity value of the composite at 14 mW / MOC, the mesh size of 60. The market value of the thermal conductivity of the composite minimum of 4 mW / MOC, the mesh size of 20. The value of the thermal conductivity of the composite is below the thermal conductivity of a control sample (without addition montmoriilonite particles). From the data analysis, it can be concluded that semkin larger particle size, the better the inhibiting heat and strength of the composite stronger than the control sample.