Glass fiber elastic felt for LNG storage tank and preparation method thereof

The glass fiber elastic felt prepared by 3D printing technology solves the problem of heat loss in LNG storage equipment, achieves low-cost and high-efficiency insulation, and meets the performance requirements of LNG storage tanks.

CN118087157BActive Publication Date: 2026-06-26WUHAN NEW ZUN NEW MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN NEW ZUN NEW MATERIALS CO LTD
Filing Date
2024-01-19
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing LNG storage equipment and insulation measures cannot completely avoid heat loss, resulting in high refrigeration energy consumption, high LNG evaporation rate, and difficulty in ensuring the integrity of storage tanks.

Method used

Glass fiber elastic mat was prepared using 3D printing technology. By rationally proportioning glass fiber powder, binder and other oxides, ultrafine fibers were formed and cured in a curing oven, resulting in glass fiber elastic mat with excellent density, resilience coefficient, tensile strength and thermal conductivity.

Benefits of technology

A low-cost, high-efficiency LNG storage tank insulation material has been developed, with a density of 16.2–19.6 kg/m³, a resilience coefficient of 0.58–0.61, a tensile strength of 8.9–9.2 kPa, and a thermal conductivity of 0.026–0.035 W/(m·K), meeting the cold insulation requirements of LNG storage tanks.

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Abstract

The application provides a glass fiber elastic felt for LNG storage tank, which is composed of the following components in parts by weight: 70-80 parts of glass fiber powder, 5-10 parts of adhesive, 2-5 parts of Na2O, 1-5 parts of CaO, 2-5 parts of MgO, 2-5 parts of Al2O3 and 3-5 parts of B2O3. The above components except the adhesive are mixed uniformly to form a composite powder material, which is fully melted in a kiln to form a mixed liquid; the mixed liquid is spun under the centrifugal action to form primary fibers, and then the primary fibers are formed into superfine fibers through high-temperature and high-pressure flame spraying; after being cooled to room temperature, the adhesive is uniformly atomized and sprayed on the surface of the superfine glass fibers to obtain fiber filaments; the fiber filaments are transported into a solidification furnace for solidification, and then pass through a fiber filament bundling and uniform distribution device to obtain the glass fiber elastic felt. The prepared glass fiber elastic felt has excellent performance and meets the standard technical indexes of the cold-keeping elastic felt for LNG storage tank.
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