What kind of insulation materials are available in the types of insulation materials?

In buildings, materials that are customarily used to control the heat outflow of the room are called insulation materials, and materials that prevent outdoor heat from entering the room are called insulation materials. Insulation, insulation materials are collectively referred to as insulation materials. With the prevalence of indoor thermal insulation walls, there are many varieties of thermal insulation materials on the market. Choosing the right thermal insulation material can not only achieve the purpose of energy saving and heat preservation. It also produces special effects to soften the space and beautify the environment. What kinds of indoor insulation materials are there and what materials are good? Here are some questions about the types of insulation materials , follow the small series to find out!

Analysis of the types of insulation materials in the types of insulation materials

Commonly used thermal insulation materials can be divided into organic and inorganic categories according to their composition. According to its shape, it can be divided into fibrous, porous micropores, bubbles, granules, layers, etc., and some simple materials are briefly introduced below.

1. Insulation material type inorganic fibrous

1. Mineral wool, rock wool and its products

Mineral wool is a cotton-based thermal insulation material made of industrial waste slag as the main raw material, melted and sprayed or centrifuged: rock wool is made of natural rock as mineral wool. Commonly used rocks such as basalt and hui Green rock, amphibolite, etc.

Characteristics of mineral wool: Mineral wool and products are a kind of high quality insulation material, which has a history of more than 100 years of production and application. Its light weight, heat preservation, heat insulation, sound absorption, good chemical stability, non-combustion, corrosion resistance, and abundant raw materials, low cost.

Main use of mineral wool: Its products are mainly used for insulation and sound absorption of walls, roofs, ceilings, etc. of dry buildings, and can also be made into waterproof felt and pipe casing.

2, insulation material type glass wool and products

Glass wool is a fibrous material made by melting glass raw materials or broken glass. It includes short cotton and ultra-fine cotton.

Glass wool features: good thermal insulation performance at high temperature and low temperature; good elastic recovery; good sound absorption performance for sound waves and noise; good chemical stability, no aging The performance is the same, the thickness, density and shape of the product can be processed according to user requirements.

Main use: Short cotton is mainly made of glass wool felt and roll felt, used for heat insulation and sound insulation of buildings, heat preservation and sound insulation of ventilation and air conditioning equipment. Ultra-fine cotton is mainly made of glass wool board and glass wool tube sleeve. It can be used for heating, water supply, power and other equipment for dry large-scale recording studio, cold storage, warehouse, ship, aviation, tunnel and building construction. Insulation of the pipeline.

3. Insulation material type aluminum silicate cotton and products

Aluminum silicate cotton, namely aluminum silicate fiber with a diameter of 3~5μm, also known as refractory fiber, is made of high quality coke gemstone, high purity alumina, silica, zircon sand, etc. The furnace is melt-blown or twisted to make the inorganic material with the same chemical composition and structure and different dispersion materials for polymerization and fiberization. It is a new type of high-quality thermal insulation material recognized at home and abroad.

Features: light weight, high temperature resistance, low heat capacity, low thermal conductivity, excellent thermal stability, excellent tensile strength and excellent chemical stability.

Main use: It is widely used in high temperature adiabatic sealing of industrial furnaces in electric power, petroleum, metallurgy, building materials, machinery, chemical industry, ceramics and other industrial sectors as well as for filtering and sound absorbing materials.

4. Asbestos and its products

Asbestos, also known as "asbestos", is a commercial term referring to silicate mineral products with high tensile strength, high flexibility, chemical and thermal attack resistance, electrical insulation and spinnability. It is a general term for natural fibrous silicate-like minerals.

Features: High fire resistance, electrical insulation and thermal insulation. It is an important fireproof, insulating and thermal insulation material.

Main uses: mainly dry mechanical transmission, braking and insulation, fire prevention, heat insulation, anti-corrosion, sound insulation, insulation, etc., among which the more important are the automotive, chemical, electrical equipment, construction and other manufacturing sectors.

5, insulation material type inorganic microporous materials

(1) Diatomaceous earth: Diatomaceous earth is composed of amorphous SIO2 and contains a small amount of fe2o3, CaO, MgO, al2o3; and organic impurities.

Characteristics: Diatomaceous earth is usually light yellow or light gray, soft, porous and light, and its void ratio is 50%~80%, so it has good thermal insulation properties. The chemical composition of diatomaceous earth is water-containing amorphous SIO2, which can reach a maximum temperature of 900 °C.

Main use: It is commonly used in industry as insulation material, filter material, filler, abrasive material, water glass raw material, decolorizing agent and catalyst carrier.

(2) Calcium silicate and its products: Calcium silicate insulation material is 65% silica (quartz sand powder, diatomaceous earth, etc.), 35% calcium oxide (also useful for slaked lime, calcium carbide slag, etc.) and 5% enhancement Fiber (such as asbestos, glass fiber, etc.) is the main raw material, a new type of insulation material made by stirring, heating, gelling, molding, autoclaving, drying and other processes.

Features: low apparent density, high flexural strength, low thermal conductivity, high temperature, good water resistance, strong fire resistance, no corrosion, durable, and easy to process and easy to install.

Main uses: extensive use of thermal pipelines, equipment, kiln insulation materials for dry metallurgy, electric power, chemical industry, etc., interior and exterior walls of building construction, fireproof covering materials for flat roofs, warehouse walls and aisles of various ships Fireproof insulation material.

6. Insulation material type inorganic bubble-like insulation material

(1) Expanded perlite and its products.

Expanded perlite is a white or gray-white granule that is calcined from natural perlite and is a high-performance thermal insulation material.

Features: low density, low thermal conductivity, chemical stability. Wide temperature range, low moisture absorption, non-toxic and tasteless, non-corrosive, non-flammable, sound-absorbing and easy to construct.

Main use: Expanded perlite bulk material in construction engineering is mainly used as filling material, cast-in-place cement perlite insulation, heat insulation layer, stucco material and refractory concrete. Its products are widely used in lower temperature heat pipes and heat equipment. Insulation of other industrial piping equipment and industrial buildings, as well as insulation, insulation and sound absorption of industrial and civil building maintenance structures.

(2) Aerated concrete.

Aerated concrete is a light and long-lasting building material. It is made of cement, lime, slag, fly ash, sand, gas generating materials, etc., after grinding, compounding, pouring, cutting, autoclaving and curing. Made by milling and other processes, the product contains a large number of uniform and fine pores after the gas is produced. Therefore, it is called aerated concrete.

Features: light weight [porosity 70%-80%, bulk density is generally 400~700kg/m3, equivalent to 1/3 of solid clay brick, 1/5 of ordinary concrete, good thermal insulation performance, good fire resistance, no It emits harmful gases, has processability, good sound absorption performance, wide source of raw materials, high production efficiency and low production energy consumption.

Main use: Mainly used in lightweight bricks, light walls, soundproof bricks, sound insulation bricks and energy-saving bricks in construction projects.

Second, the type of insulation material organic bubble-like insulation material

1. Insulation material type molded polystyrene foam plastic (EPS)

Molded polystyrene foam is made by heating and pre-expanding expandable polystyrene beads and heating in a grinding tool. It has a closed cell structure and uses polystyrene at a temperature not exceeding 75 °C. Ethylene foam sheet.

Features: Excellent long-lasting thermal insulation, unique cushioning shock resistance, aging resistance and water resistance.

Main uses: Widely used in many fields such as agenda life, agriculture, transportation, military industry, and aerospace industry. In particular, the market demand for large-sized foamed sheets is very large, as a color steel sandwich panel, a wire (board) grid lightweight composite panel, a wall exterior panel, a roof insulation board, and a geothermal board, etc. It is more widely used. It is used in the field of building construction and is used as insulation material for heat preservation, heat insulation, waterproofing and the ground.

2. Insulation material type extruded polystyrene foam (XPS)

XPS is a heat-insulating extruded polystyrene foam plastic, commonly known as extruded board, which is made of polystyrene resin and other raw materials and poly-storage. It is injected into the catalyst by heating and mixing, and then extruded. A rigid foam board made by molding.

Features: It has a perfect closed-cell honeycomb structure, and its structure has a closed cell ratio of over 99%. This structure makes the XPS board have very low water absorption (almost no water absorption), low thermal conductivity, high pressure resistance, and resistance. Aging (there is almost no aging decomposition in normal use.)

Main use: Widely used for wall insulation, flat concrete roof and steel structure roof insulation; for low temperature storage ground, parking platform, airport runway, highway and other fields of moisture insulation.

3, insulation material type polyurethane rigid foam plastic

Polyurethane rigid foam is made of polymerized foamed isocyanate and hydroxy compound. It can be divided into soft and hard according to its hardness. Polyurethane rigid foam plastic is generally foamed at room temperature, and the molding process is relatively simple. According to the degree of construction mechanization, it can be divided into manual foaming and mechanical foaming: according to the pressure during foaming, it can be divided into high pressure foaming and low pressure foaming; according to the molding method, it can be divided into casting foaming and spray foaming.

Features: Polyurethane rigid foam is mostly closed-cell structure, with excellent thermal insulation effect, light weight, high specific strength, convenient construction, etc. It also has the characteristics of sound insulation, shock resistance, electrical insulation, heat resistance, cold resistance and solvent resistance.

Main uses: Insulation materials for refrigeration and refrigeration equipment in food and other industries: industrial equipment insulation: such as storage tanks, pipelines, etc.; building insulation materials; potting materials.

The above is the whole content of the insulation materials brought by Xiaobian. I believe that after reading this article, the small masters have a basic understanding of the types of insulation materials. If you want to know more about decoration consultation, please click to enter the decoration. Process section.

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