In the field of ship insulation, cold insulation materials are primarily employed in cold chain transport, marine cold storage facilities, and cryogenic piping systems. Their function extends beyond mere cold retention, impacting both energy utilisation and cargo quality.

Cold chain insulation materials always play a vital role. 

Firstly, in marine cold storage facilities and refrigerated holds—such as those aboard ocean-going fishing vessels and refrigerated cargo ships—PIR/PUR insulation panels, cellular glass, and PUF spray coatings are typically employed. These materials maintain stable low temperatures, prevent cold loss, and ensure the freshness and quality of goods like seafood, meat, and produce during long-distance transport. 

Secondly, within a vessel's cold chain transport systems—including refrigerated containers and cold storage compartments—materials such as PIR, XPS, EPS, and Resilient Blankets are commonly employed. These form a stable cold chain environment, reducing refrigeration equipment energy consumption and enhancing refrigeration efficiency.

Thirdly, for low-temperature pipelines and piping systems—such as refrigeration lines or liquefied gas (LNG, liquid nitrogen, liquid oxygen) transport pipelines—materials like Cellular Glass, Aerogel Felt, and Fiberglass are typically employed. These prevent cold loss, avoid surface condensation or icing on pipes, and ensure the safe transport of cryogenic media. 

Fourthly, for structural protection within the hull—such as in bilges, cold store floors, and deck bulkheads—foam glass blocks or PIR insulation panels provide structural support in load-bearing and humid conditions. These materials also offer moisture resistance and corrosion protection, thereby extending the service life of the hull structure.

Finally, most cold insulation materials possess fire-retardant properties (such as PIR and foam glass), enhancing operational safety. Simultaneously, by reducing heat loss, they significantly decrease refrigeration equipment energy consumption, improve fuel efficiency, and lower operational costs.