Renqiu sound-absorbing paint factory

Renqiu sound-absorbing coating plant A sound level: A sound level concepts will confuse ordinary people. Sound level is the sound frequency weighted sum of the individual (not a simple arithmetic sum) the size of the resulting sound, A sound level is the various frequencies of sound through the A-weighted and then summed to obtain the size of the network, A sound level reflect the human ear to low frequency and high frequency auditory characteristics insensitive example, if a 100Hz SPL 80dB, A sound level in the calculation, the weighting will be subtracted from 50.5dB, ie 29.5dB to calculate; but of 1KHz SPL is 80dB, weighted value 0dB, 80dB calculated based upon that. A sound level aims, the greater A sound level, it indicates that sounds louder. A sound level in decibels is usually counted as dBA. Many noise-related national standards are by A sound level as an indicator of the underground garage is characterized by: the underground garage roof and down both sides were district heating and non-heating, the temperature difference between the winter heating season, up and down the adjacent area floor, as well as shear walls, columns, beams and other parts connected thereto to form a heat-intensive areas, the heat from the top household room, underground garage loss, heat loss is very serious. In the new "public building energy efficiency design standards" and "residential building energy efficiency design standards", also made on the heat transfer coefficient is not greater than 1.5W / m. K and 0.55W / m. K requirement. Underground garage is all kinds of pipeline facilities pooling area, beams scattered to install insulation materials caused difficulties. Underground garage is a vehicle storage areas, require combustion performance of insulation materials for Class A non-combustible material, there is a need or want to know, please call: 020-66291993,15913137176 Lei, business QQ: 81482540. Underground garage spray system solutions for underground garage structure complex, difficult operation, thermal insulation characteristics of high fire safety requirements, develop a coating system-specific solutions, professional construction through the fiber coating, forming a seamless, sealed, and the substrate is formed in close one of the sprayed layer, to meet the national standard Class A fire also has excellent thermal insulation, sound absorption and other comprehensive performance without cutting, sticking anchors, surface mount trim, etc., dramatically reducing the difficulty of construction, the color can be According to the design requirements, free matching, increase the aesthetics of the roof of the underground garage. When it snows, the ground, buildings and trees are often covered with a layer of snow. Different with ice, snow is not hard solid, contrary sparsely snow coming together, which contains many small voids within the structure a bit like acoustic panels. These voids acoustic sound waves to produce results, especially for frequencies above 600 Hz the acoustic effect is very significant. Night snow unusual quiet earth, is the reason. Renqiu sound-absorbing paint factory