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Product
Prefabricated buried insulation steel pipe
- Product details
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Prefabricated polyurethane insulation pipe
The company produces three in one direct buried insulation pipes using imported high-voltage polyurethane foam equipment, which have excellent overall performance. The steel pipe's outer surface is treated with shot blasting and rust removal, and the inner surface of the outer protective pipe is treated with corona treatment, further improving the bonding performance of the insulation pipe.
The insulation layer is made of rigid polyurethane foam with a density of 60kg/m3 to 80kg/m3, which can fully fill the gap between the steel pipe and the casing, and has a certain bonding strength, so that the steel pipe, the casing and the insulation layer form a solid whole.
Polyurethane foam has good mechanical properties and thermal insulation properties. Generally, it can withstand 120 ℃, and can withstand 180 ℃ through modification or combination with other thermal insulation materials.
Hard polyurethane insulation pipe is a type of insulation shell made by foaming black and white materials.
(1) The main components of white material are phosphorus containing polyether resin, glycerol polyether resin, and ethylene glycol polyether resin. In addition, flame retardants, foam stabilizers, and catalysts need to be added.
(2) The main component of black material is polyphenyl polyisocyanate, with a purity of 90%.
(3) The outer layer of fiberglass is the moisture-proof layer in the insulation structure, made of resin impregnated with glass fiber cloth, which has strong weather resistance and corrosion resistance, as well as strong hardness
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common problem
Q
What are the main types of building insulation materials? What are the advantages and disadvantages of each?
A
Advantages: Good fire resistance (Class A non combustible), good breathability, and high stability.
Disadvantages: Slightly higher thermal conductivity than organic materials, higher water absorption rate, and easy generation of fiber dust during construction.
Organic insulation materials (such as EPS polystyrene board, XPS extruded board, PU polyurethane):
Advantages: low thermal conductivity, good insulation effect, light weight, and convenient construction.
Disadvantages: The fire rating is mostly B level (requiring the addition of flame retardants), it is prone to deformation at high temperatures, and its durability is slightly poor.
Composite insulation materials (such as integrated insulation board, vacuum insulation board):
Advantages: Excellent comprehensive performance, high construction efficiency, and some can achieve Class A fire protection.
Disadvantages: High cost and strict requirements for the flatness of the base layer.
Q
How to choose insulation materials suitable for the project?
A
Fire prevention requirements: Grade A materials are required for high-rise buildings (>100m); Low level B1 (flame retardant) is available.
Climate conditions: In extremely cold regions, materials with low thermal conductivity (such as PU, XPS) are preferred; Low water absorption is required in humid environment (such as XPS, foam glass).
Base type: Concrete walls often use boards; Complex shapes can be coated with polyurethane or insulated mortar.
Economy: EPS has the lowest cost; Vacuum insulation board is expensive but thin.
Policy and regulations: B2 level materials are prohibited in some areas, and local standards need to be consulted.
