LNG elastic felt is a flexible insulation material primarily used in low-temperature and ultra-low-temperature environments, widely applied in liquefied natural gas (LNG) storage and transportation systems, cryogenic pipelines, and related equipment. Its performance is not derived from a single material but relies on a multi-layered composite structure design. This article will systematically analyze LNG elastic felt from the perspective of its structural composition.

I. Overview of the Overall Structure of LNG Elastic Felt

From a material structure perspective, LNG elastic felt is a multi-layered composite flexible insulation material, typically composed of the following parts:

1. Cryogenic Insulation Functional Layer

2. Elastic Reinforcing Fiber Structure

3. Surface Protection and Coating Structure

These structural layers work collaboratively in low-temperature environments to ensure the material's insulation stability and structural integrity.

II. Core Structural Layer: Analysis of the Cryogenic Insulation Functional Layer

1. Structural Characteristics

The core layer of LNG elastic felt is typically composed of a low thermal conductivity insulation material system with a large number of microporous structures within it.

IV. Outer Layer Structure: Surface Protection and Stabilization Layer

1. Functions of the Outer Layer Structure

The outer layer of the LNG elastic felt primarily serves the following functions:

Providing basic protection for the internal structure

Reducing the impact of external mechanical friction on the material

Improving construction adaptability to a certain extent

2. Characteristics of the Outer Layer Structure

The outer layer structure typically balances flexibility and durability, without affecting the overall bending performance of the material, while also helping to maintain structural integrity.

V. Advantages of the Composite Structure of LNG Elastic Felt

1. Multi-layer Synergistic Effect

The structural layers do not exist independently, but rather form a synergistic system under low-temperature conditions, achieving a balance between insulation performance, flexibility, and structural stability.

2. Adaptability to Complex Working Conditions

The multi-layer composite structure allows LNG elastic felt to adapt to the insulation requirements of complex structures such as pipelines, valves, and elbows, reducing construction difficulty.

VI. Comparison with Other Insulation Materials

1. Structural Differences with Rock Wool and Glass Wool

Rock wool and glass wool are primarily based on a loose fibrous structure, suitable for normal or medium-high temperature environments;

LNG elastic felt, on the other hand, emphasizes flexibility and structural stability in low-temperature environments.

2. Structural Differences with Rubber and Plastic Insulation Materials

Rubber and plastic materials are mostly closed-cell foam structures, suitable for medium-low temperature systems;

LNG elastic felt is designed for even lower temperature ranges, with a different focus in its structural design.

LNG Elastic Felt

VII. Significance of Structural Composition for Engineering Applications

Based on its structural characteristics, LNG elastic felt is commonly used in the following scenarios:

LNG storage tanks and cryogenic pipeline insulation

Cryogenic media transportation systems

Engineering components requiring high material flexibility and low-temperature adaptability

From a structural composition perspective, LNG elastic felt is a composite insulation material with a cryogenic insulation functional layer as its core, supplemented by an elastic reinforcement structure and a protective layer. Its multi-layered structural design enables the material to maintain both thermal insulation performance and structural stability in low-temperature environments, providing a reliable material foundation for low-temperature engineering systems.