Ask about the choice of pipe insulation materials

Common insulation materials are as follows: 1. Polystyrene, like lunch boxes, is also used as building insulation materials; 2. EPS foam board, which is a protective foam when buying a computer; 3. XPS extruded plastic board can be used on the floor as a floor heating insulation layer; 4. Polyurethane board can be fireproof, waterproof and high temperature resistant, and is used for building wall insulation; 5. Rock wool board, mainly using basalt as the main material, is used for external wall insulation; 6. Glass wool board, used for external wall insulation, heat insulation, noise reduction; 7. Rubber and plastic is a general term for the rubber and plastic industry, which is used for the insulation of pipelines and equipment. Thermal insulation materials are generally materials with a guide thermal coefficient less than or equal to.

Thermal insulation materials are developing rapidly, and the use of good thermal insulation technology and materials in industry and construction can often achieve twice the result with half the effort

In industry research, the selection of materials has basically matured. In addition, if there are new materials, they can be transformed in combination with the actual situation in China. If you are doing design, when you are doing design, the first thing you must abide by must be the design specification, which is fundamental.

The second is the design experience, which is not an overnight thing, and it is also the most intuitive place to be able to distinguish between old designers and fledgling graduates. As for the "almost" problem, this has been a long-standing problem, because if you design it to perfection, the cost is also "overloaded". This is not what Party A wants to see, and it is also what the project leader of the design institute does not want to see.

Therefore, in terms of the depth of compliance with the norms (most of them make a fuss about "prohibitions" and "recommendations") and the control of the total project cost, most of the time it is necessary to find a balance, which is the "experience" I mentioned above, and it is also the "almost" you refer to.

If it is a general pipeline operation: you can choose hard insulation materials such as cork or polystyrene, because these materials are generally processed and formed at the factory, all construction will be very convenient, and the insulation effect is more stable than the quality of the current processing.

If those low-temperature pipes are dense, such as complex structural shapes, they can be processed with polyurethane on-site foaming spraying, which is convenient for construction and has good results.

Of course, because it is a low-temperature pipe, you can consider using rock wool insulation pipe, and it is recommended that the thickness be controlled at 50-75mm. When insulating low-temperature pipes, consider whether rust removal and moisture prevention are required, which can improve the service life of the pipes.

At present, the mainstream insulation materials for low-temperature pipes on the market include cork, aluminum silicate, polystyrene and polyurethane. As for which one to choose, it should be considered comprehensively according to the complexity of the system pipes and the insulation material. For example, the external environment in which the pipeline is located, the internal environment of pipeline transportation, and so on.

Here are some reasons for the selection of materials:

If you are working in general plumbing: you can choose hard insulation materials such as cork or polystyrene, because these materials are generally processed and formed at the factory, all the construction will be very convenient, and the insulation effect is more stable than the quality of the current processing.

If your low-temperature pipes are relatively dense: such as complex structural shapes, you can use polyurethane on-site foaming spraying, which is convenient for construction and has good results.

Of course, because you are a low-temperature pipe, you can consider using rock wool insulation pipes, and it is recommended that the thickness be controlled at 50-75mm.

There are many types of pipeline insulation materials, and when choosing according to multiple factors such as the use temperature, the use of parts, and the use environment, choose the pipeline insulation materials suitable for their own use, different materials, and different indicators of the product are naturally not the same.

This depends on the temperature and environment of the pipeline.

There are many pipeline insulation materials, such as glass wool, rock wool, aluminum silicate, etc., which are generally used at high temperatures.

Ordinary cold and hot water generally uses more rubber and plastic.

There are many polyurethanes, phenolic foams, and foam glasses for low temperatures.

Among them, phenolic foam can be applied in the range of -250 120.

In modern life, pipe insulation materials are one of our common ones, there are many kinds of pipe insulation materials on the market, common pipe insulation materials are rock wool pipe shell, glass wool pipe shell, aluminum silicate pipe shell, rubber and plastic pipe shell, silicate pipe shell, polyurethane insulation pipe and so on, each has its own characteristics and advantages, the following will give you a specific introduction to the characteristics of pipeline insulation materials.

1. Introduction to the characteristics of pipeline insulation materials.

The purpose of thermal insulation is to reduce the heat loss caused by the heat transfer of the pipeline of the heat medium, and the pipe insulation can save the heat source and reduce the operating cost of the system, so in the indoor heating system, the main pipe and the main riser pipe for water supply and return laid in the trench generally need to take insulation measures.

The insulation material of heating pipes should have heat resistance, flame retardancy, low thermal conductivity, low moisture absorption and no corrosion. In order to strengthen the mechanical strength, it is generally made into a tile shape, and rock wool pipe shells are commonly used; Ultra-fine glass wool tube shell, polyurethane vinegar foam tile; Perlite tiles and other insulation materials.

The thickness of the insulation layer should be reasonably and economically selected. If the insulation layer is too thin, it will increase the heat loss; If the insulation layer is too thick, it will increase the surface area for heat dissipation, which will also increase heat loss. Generally, it should be designed, according to the nature of the insulation material, the temperature of the heat medium and other factors to determine the thickness of the insulation layer, the thickness of the common use is 40 50

The insulation layer is generally composed of anti-rust paint, insulation materials, moisture-proof layer (used for pipelines in the trench), protective layer, anti-corrosion layer (used in the trench or directly buried pipeline) and topcoat or fireproof coating).

2. Commonly used pipeline insulation materials.

1. Rock wool tube shell. It is used for the insulation of all kinds of pipelines, including petroleum, electricity, heating, industry, etc., mainly for the thermal insulation and insulation of pipelines and the prevention of pipeline freezing and cracking.

2. Glass wool tube shell. It is used for the specific insulation of various pipelines (including refrigeration, hot gas, hot water, etc.), and is widely used in the insulation of thermal power pipelines, air conditioning and refrigeration equipment. Applicable temperature: 454°C

3. Aluminum silicate tube shell. It is used in high-temperature pipelines of power boilers, high-temperature steam pipelines of thermoelectric power and high-temperature steam pipelines of chemical industry. Applicable temperature: 1000 °C. (used for high-temperature pipelines in the power industry).

4. Rubber and plastic tube shell. The rubber and plastic pipe has a smooth nature, an elegant appearance, and can be used for a long time. It is used in air conditioning, medicine, textile, light industry and other industries. Applicable temperature: -40 120

5. Portland tube shell. As an alternative to aluminum silicate. Its comprehensive cost is low. It has anti-corrosion and impact resistance. The service life can reach 30-50 years. Applicable temperature: -40 800 °C.

6. Polyurethane insulation pipe. This product is mainly used in underground pipeline insulation system, and has excellent cold resistance. It has the advantages of waterproof, anti-corrosion and anti-aging. Applicable temperature: -196 -120.

The types of pipe insulation materials are: rock wool materials, glass wool, polyurethane, aluminum silicate cotton, polyethylene and other materials, and the materials used in different regions and environments will be different, such as the use of ceiling pipes can choose rock wool, glass wool is suitable for use in some corrosive environments, and polyurethane materials are generally used for cold storage insulation and rough use.

Types: 1. Rock wool tube shells are widely used in the insulation of boilers and equipment pipelines in petroleum, chemical, metallurgy, shipbuilding, textile and other industries, and are also used for the insulation of partition walls, ceilings and internal and external walls in the construction industry, and the thermal insulation of various types of cold and hot pipes and hidden and exposed pipelines.

2. Polyethylene insulation material is produced by special technology, and its bubble cell is a closed-cell structure, which has the characteristics of heat insulation, moisturizing, anti-condensation, anti-tan, and anti-aging, and is widely used in air conditioning and heat insulation, moisturizing, and cold retention of cold and hot pipes. Polyethylene insulation material is a high-performance energy-saving material, under the same conditions, the material is less than other materials, and the construction is convenient and fast, in order to shorten the project cycle, improve the construction quality, improve the reliable guarantee.

3. Aluminum silicate insulation material is a new type of environmentally friendly wall insulation material. It meets the national construction standards and is a necessary material for many real estate developers, engineering contractors and decoration contractors.

4. High-temperature glass Yuxin Zhen glass cotton insulation material is a lightweight, durable, and high-temperature insulation material with superior thermal insulation performance composed of uniformly slender, elastic glass fiber and special high-temperature adhesive.