Characteristics and uses of alkali-free glass fiber needle felt

Glass fiber needle felt is a new type of high temperature filter material with reasonable structure and excellent performance. It is made of glass fiber and needled into felt. It has three-dimensional pore structure, high void ratio, low resistance, and dust removal efficiency exceeding fabric filter material, up to 99.9%. The filtration speed is about twice as high as the fabric filter. The filter media is suitable for high temperature flue gas filtration in industries such as carbon black chemicals, steel, metallurgy, coal-fired boilers, refractory materials and cement. Suitable for use in bag filters for pulse cleaning and high speed backflushing. Long-term test of high temperature and corrosive medium, excellent performance, effective control of dust pollution, and recovery of valuable fine particles.

First, excellent features

1. Good heat insulation: According to the physical principle, the thermal conductivity of the gas is small, and there are many air holes inside the excellent heat-breaking material. The glass fiber needle-punched cotton has numerous fine gases, and the fibers are irregularly arranged, which is an excellent heat insulating material with a heat transfer coefficient of 0.2 to 0.040 kcal/mhr. Between c;

2, will not burn the main component of glass fiber is silicide (more than 50%), with non-combustibility, no deformation, no embrittlement, high temperature resistance up to 7000C;

3, sound absorption is good: When the sound wave invades the fiberglass cotton, the energy will be inhaled in large quantities due to the friction of the air holes with different fibers and sizes. In general, the sound absorption rate is as high as 90% or more, which is a good way to prevent noise interference;

4, high insulation: glass fiber can withstand high temperature, good mechanical properties, and high chemical stability, is the best insulating material;

5, high corrosion resistance: glass fiber is not afraid of strong acid, strong alkali, will not reduce its functional characteristics for a long time;

6, good recovery: glass fiber contains a lot of fixed air pockets, excellent recovery. Not afraid of any shock and vibration, the tensile strength is more than 1.0kg.

7. Low moisture absorption rate: The moisture absorption rate is usually close to zero.

8. Light weight: soft Compared with other heat insulation materials, the fiberglass needle felt has the lightest and softest quality. If it is installed on the machine, it can reduce the load of weight and vibration.

9. Simple construction: The size can be cut according to the customer.

Second, the main purpose:

1. It is used for high temperature equipment of various heat sources (coal, electricity, oil, gas) and heat preservation of central air conditioning pipelines;

2. Used for various heat insulation and fireproof materials;

3. Sealing, sound absorbing, filtering and insulating materials for special places;

4. Used for heat preservation of various heat transfer and heat storage devices;

5. It is used for sound insulation, heat insulation and heat resistance in cars, boats, airplanes, etc.

6. Sound insulation of the inner core of the muffler of automobiles and motorcycles and noise reduction of the engine;

7. The color steel plate and the wooden structure house are separated by thermal insulation;

8, thermal, chemical pipeline insulation, thermal insulation effect is better than general insulation materials;

9. Insulation of electrical panels for household appliances such as air conditioners, refrigerators, microwave ovens, and dishwashers;

10. Other occasions requiring heat preservation, heat insulation, fire prevention, sound absorption and insulation.