Glass fiber cotton felt used for sound insulation and heat insulation, and manufacturing method thereof

Abstract

Provided is a glass fiber cotton felt used for sound insulation and heat insulation. The glass fiber cotton felt used for sound insulation and heat insulation is characterized in that the glass fiber cotton felt is made by the following method: fusing glass blocks to clear glass melt through a kiln, through primary drawing and flame injection, obtaining glass wool, through spraying an adhesive, the glass wool bonding to form a felt, and finally curing through a curing oven. Average fiber diameter of the glass fiber cotton felt is 0.5-3.5 [mu]m, volume-weight is 6.5-20.5 kg / m<3>, gum content is 1-25%, 1000 Hz sound transmission loss is 5.2-11.4 dB, heat conductivity coefficient is 0.020-0.045 W / (m.K), and air permeability is 250-715 mm / s. The invention also discloses a manufacturing method for the glass fiber cotton felt used for sound insulation and heat insulation. The method comprises the following steps: (1) feeding in materials; (2) performing primary drawing; (3) performing secondary drawing; (3) collecting cotton and spraying adhesive; (5) curing and drying; (6) trimming and rolling cotton. Beneficial effects of the glass fiber cotton felt are that 1, the sound insulation and heat insulation performance are excellent; 2, quality is stable and cotton felt uniformity is good; 3, the cotton felt is light and high in strength.

Description

technical field [0001] The invention relates to a glass fiber felt and a preparation method thereof, in particular to a glass fiber felt for sound insulation and heat insulation and a preparation method thereof. Background technique [0002] Glass fiber is an engineering material with excellent properties such as non-combustibility, corrosion resistance, high temperature resistance, low moisture absorption, and small elongation. With the rapid development of the market economy, glass fiber will become a very good substitute for metal materials, and it is an indispensable raw material for construction, transportation, electronics, electrical, chemical, metallurgy, environmental protection, national defense and other industries. Centrifugal method and flame method are currently the two main methods of producing glass fiber. Among them, the centrifugal method is to put the glass balls into the furnace and melt them at high temperature, then enter the centrifuge, and throw them ...

AI Technical Summary

Problems solved by technology

However, the glass fiber prepared by centrifugal method inevitably has the disadvantages of thick fiber, high content of slag balls, and large bulk density of cotton mat.

[0005] At present, most of the glass fiber mats produced in China are made by centrifugal method. Although they have been widely used in construction, thermal insulation and other fields, due to the shortcomings of insufficient fiber diameter, high content of slag balls, and large bulk density of cotton mats, they are used in high-end products. It cannot be used in thermal insulation and sound insulation systems in the field, so the glass fiber felt obtained by the flame blowing process not only solves the above problems, but also improves the performance of thermal insulation, flame retardancy, corrosion resistance, and sound insulation due to the refinement of fiber diameter, and With wide sources of raw materials, low cost and simple process, it has broad application prospects in high-end fields such as aircraft, high-speed rail, and ships.