Prospects for the use of rigid polyvinyl chloride in small-tonnage shipbuilding
https://doi.org/10.46845/1997-3071-2024-73-111-124
Abstract
The paper studies the application of rigid polyvinyl chloride (PVC) as the main material of hulls of small vessels. The paper presents the statistics of application of materials of hulls of small vessels. As of 2019, the number of vessels made of polymeric materials in Russia did not exceed 9%. Out of all polymeric materials, the paper considers in detail application of low-pressure polyethylene (LDPE) and PVC is considered. The main domestic organizations engaged in design and construction of HDPE vessels and examples of their works are given. Physical and mechanical charateristics of HDPE and rigid PVC are compared. On the basis of comparative analysis it is shown that rigid PVC is better than low-pressure polyethylene in many respects from the point of view of physical and mechanical characteristics. The characteristics and properties of rigid polyvinylchloride, limiting its use as the main material of the ship hull, are highlighted. A comparative study of creep behavior of rigid PVC and HDPE specimens has been carried out. The tests have been carried out at forces corresponding to tensile stresses of 5–15 MPa. Each sample has been tested for 2 hours. At the selected design stress values, the HDPE specimens showed pronounced creep, in contrast to the rigid PVC specimens. It has been noted that the creep curve of low-pressure polyethylene samples has a pronounced step form. Examples of methods to reduce toxicity in combustion and improve resistance are presented.
Keywords
HDPE,
rigid PVC,
creep,
performance comparison,
polymeric materials,
physical-mechanical characteristics,
tests
Supporting agencies: the author expresses gratitude to the company LLC "Kaliningrad Composite Plant" for providing materials for testing
About the Author
D. A. Romanyuta
Kaliningrad State Technical University
Russian Federation
Russian Federation
Dmitriy A. Romanyuta, chief designer of the design bureau of the shipbuilding research center, graduate student of the department of Shipbuilding, ship repair and marine technology
Kaliningrad
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Review
For citations:
Romanyuta D.A. Prospects for the use of rigid polyvinyl chloride in small-tonnage shipbuilding. KSTU News. 2024;(73):111-124. (In Russ.) https://doi.org/10.46845/1997-3071-2024-73-111-124
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