SIAHAAN, YOSAFAT SONDANG MARCELLINUS (2016) ANALISA EFEKTIFITAS POLYETHYLENE DAN POLYPROPYLENE SEBAGAI TOP COAT PADA METODE PELAPIS 3 LAYER COATING TERHADAP KETAHANAN KOROSI DARI BAJA API 5L GRADE B. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Sistem perpipaan memiliki peranan sangat penting di
industri minyak dan gas. Sebagian besar jaringan pipa
menggunakan baja sebagai material komponennya sehingga
sangat rentan terdegradasi akibat peristiwa korosi yang
disebabkan oleh lingkungannya. Salah satu metode untuk
melindungi pipa dari korosi adalah dengan menggunakan metode
multi-layer coating dengan polyethylene dan polypropylene
sebagai top coat, dimana metode ini memiliki berbagai kelebihan
dan mampu untuk menutupi keterbatasan dari metode single-layer
coating. Berdasarkan pengujian uji sembur kabut garam, pelapis
epoxy, polyethylene, dan polypropylene memiliki efektivitas
terhadap ketahanan korosi yang baik dimana ketiga lapisan
tersebut mendapat rating 9. Sedangkan pada pengujian pull-off
test, lapisan epoksi memiliki rata-rata nilai adhesi paling besar,
yaitu 4.67 Mpa, hal ini dikarenakan pada lapisan polyethylene dan
polypropylene mengalami cohesive dan glue failure pada saat
pengujian. Melalui pengamatan secara visual, polypropylene
memiliki ikatan antar lapisan yang lebih baik, dikarenakan pada
permukaan substratnya terdapat mechanical interlocking pada
daerah interface yang meningkatkan kekuatan adhesinya. ===== Pipeline has a very important role in the oil and gas
industry. Most of the pipelines used in this industry is steel as the
material which particularly vulnerable to degraded due to the
events of corrosion caused by the environment. One of the method
to protect the pipe from the corrosion is by using a multi-layer
coating with polyethylene and polypropylene as a top coat. This
method has many advantages compared to single-layer and is
able to cover the limitations of single-layer coating method.
Based on data from salt spray fog test, epoxy, polyethylene, and
polypropylene coatings have excellent effectiveness against
corrosion with rating value 9. From the pull-off test result, epoxy
coating has better average adhesion value rather than
polyethylene and polypropylene coating with 4.67 Mpa. This
result was obtained due to different failure category from the test,
epoxy as adhesive failure, while polyethylene and polypropylene
categorized as cohesive failure and glue failure. Through visual
observation, polypropylene has excellent bonding to the second
layer, because on the surface of the substate there is mechanical
interlocking mechansim at the interface area which increases
adhesion strength
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Epoksi, Polyethylene, Polypropylene, Korosi, Adhesi, API 5L Grade B, Uji Sembur Kabut Garam, Epoxy, Polyethylene, Polypropylene, Corrosion, Adhesion, API 5L Grade B, Salt Spray Test |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 03 Jan 2017 02:37 |
| Last Modified: | 27 Dec 2018 07:13 |
| URI: | http://repository.its.ac.id/id/eprint/1246 |
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