Characteristics And Application Of Alkali Free Glass Fiber Needled Felt

Glass fiber needled felt is a new type of high temperature filter material with reasonable structure and excellent performance. It takes glass fiber as raw material and needled into felt. It has three-dimensional pore structure, high porosity, low resistance, and the dust removal efficiency is 99.9% higher than that of fabric filter material. The filtration speed is about twice as high as that of fabric filter material. The filter material is suitable for high-temperature flue gas filtration in carbon black chemical industry, iron and steel, metallurgy, coal-fired boilers, refractories, cement and other industries. It is suitable for pulse dust cleaning and high-speed back blowing bag filter. After the long-term test of high temperature and corrosive media, it has excellent performance, effectively governs dust pollution, and recovers valuable fine particle products.

1、 Good features

1. Good heat insulation: according to the physical principle, the heat conductivity of the gas is small, and there are many air holes inside the excellent heat insulation material. The glass fiber needle punched cotton has numerous fine gases, and the fibers are irregularly arranged. It is an excellent heat insulation material, with a thermal conductivity of 0.2 ~ 0.040kcal/mhr. C between;

2. The main component of incombustible glass fiber is silicide (accounting for more than 50%), which has incombustibility, no deformation, no embrittlement, and high temperature resistance up to 7000c;

3. Good sound absorption rate: when the sound wave invades the glass fiber cotton, the energy will be absorbed in a large amount due to the friction with the fiber and air pockets of different sizes. Generally speaking, the sound absorption rate is more than 90%, which is a good talent to prevent noise interference;

4. High insulation: glass fiber can withstand high temperature, with good mechanical property and high chemical stability, which is the best insulation material;

5. High corrosion resistance: glass fiber is not afraid of strong acid and alkali, and its functional characteristics will not be reduced for a long time;

6. Good resiliency: the glass fiber contains numerous fixed air pockets, and the resiliency is excellent. It is not afraid of any impact and vibration, and the tensile strength is more than 1.0kg.

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

8. Light weight: compared with other heat insulation materials, glass fiber needled felt is the lightest and softest. If installed on machinery, it can reduce its weight and vibration load.

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

2、 Main purpose:

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

2. Used for various heat insulation and fireproof materials;

3. Sealing, sound absorption, 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 of vehicles, ships, aircraft and other parts;

6. Sound insulation for the inner core of automobile and motorcycle mufflers and the engine;

7. Color steel plate and wood structure house interlayer thermal insulation;

8. Thermal and chemical pipeline insulation, the insulation effect is better than that of general insulation materials;

9. Heat insulation and heat preservation of electric appliance wall panels in household industries such as air conditioners, refrigerators, microwave ovens and dishwashers;

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