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E3S Web of Conferences 328, 07002 (2021) ICST 2021 breakthrough by making materials from plastic waste, using type 2 plastic waste (HDPE) which if left unchecked will damage the environment, it is hoped that this material has the advantage of being durable, resistant to corrosion for approximately 50 years to decompose, has small cracking power so that it can reduce damage, and has high flexibility so it is very suitable in case of bad weather at sea, and can be recycled again . 2.1 Plastic Plastics are polymers consisting of molecules called monomers which are commonly known as comonomer, if they meet different types of monomers, they are called copolymers. There are types of natural polymers that we are familiar with such as: cellulose, protein, natural rubber etc. However, natural polymers only survived in the 19th century and beyond, polymers experienced a fairly rapid development until for the first times polymers from nitrocellulose were distributed to the public until now used in household appliances etc [2][6]. The types of plastics can be seen. in below figure. Fig. 1 Type of Plastic Type 2 plastic (HDPE) is a type of plastic that has the ability to prevent chemical reactions between the plastic packaging and the packaged food or beverage. HDPE also has the characteristics of being stronger, harder, opaque, and resistant to high temperatures. Because HDPE is made from petroleum, to make 1 kg of HDPE requires around 1.75 kg of petroleum as the raw material for its manufacture. We can find many types of HDPE plastic in our daily lives, such as: shampoo packaging, plastic bags, milk packaging, plastic rolls and others, the HDPE manufacturing process is made with a catalyst process. Because, type 2 plastic (HDPE) is a type of plastic that can be recycled, therefore, the processing process is by first sorting it from other types of plastic. After that, the process of crushing type 2 plastic (HDPE) in the recycling plant. Then, the smelting process is the last process of a product can be seen in below figure [2][4]. Fig. 2 HDPE https://doi.org/10.1051/e3sconf/202132807002 2.2 HDPE Boat Some countries have applied HDPE as material for small boat, like Turkey, Germany and other. The application has success by use virgin HDPE variant like sheet HDPE, powder or granule. And this method also has conducted in Indonesia for 5-6 six years ago. There are some advantage use HDPE as main material for small boat; not corrosive, good in impact, small resistance (low roughness resistance), easy to make and assembly, low maintenance and 100% recycle [9][5][3]. 3 Methodology Research Noverdo et all [9] has tried to applicate recycle HDPE into non class boat. The methodology will apply in this research as follow chart Fig. 3. Reserach Flow diagram 4 Research Experiment Some of the tests carried out are as follows: 4.1 Tensile Test The test aims to determine the strength of the material based on the resistance of a material to the tensile load of a test material. Tensile testing is carried out by adding the load slowly, which then increases in length which is proportional to the working force. Materials that cannot withstand relatively low stress are brittle materials. 4.2 Bending Test This test can also be referred to as testing the flexibility of the material to a centre of gravity attached to two supports. Tests are carried out to determine whether the material is deformed or not by two opposing forces at the same time 2PDF Image | DRI-WEAVE reinforced poly featuring an 8x8 scrim pattern and HDPE coating
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