6results about How to "Sound-absorbing" patented technology

The invention relates to a preparation method of high-quality foam glass, in particular to a method for preparing foam glass with good heat insulation performance and strong sound absorption performance by using glass powder as a main raw material and diatomite as an auxiliary material. The preparation method comprises the following steps: (1) pretreatment: crushing formula glass, feeding the crushed formula glass into a ball mill, grinding to obtain glass powder, and sieving the obtained glass powder, diatomite, a foaming agent and the like; (2) uniformly mixing the pretreated glass powder, diatomite, a foaming agent and a foam stabilizer according to a specific mass ratio to prepare a raw material; (3) loading the obtained raw material into a specific high-temperature-resistant mold, and feeding the mold into a kiln for firing and foaming; (4) quenching the foamed sample, and demolding; and (5) annealing the demolded sample, and trimming to obtain a finished product. The foam glass obtained in the invention has high cost performance, high noise reduction coefficient and low thermal conductivity, is an ideal sound absorption material, thermal insulation material and fireproof material, and has a very wide application prospect in the engineering construction industry.

The present invention discloses a seamless wall construction process based on bamboo fiber substrate board, including the following steps: construction preparation; setting of dividing lines; installation of bamboo fiber substrate board; inspection and treatment of the surface layer of the bamboo fiber substrate board on the wall; laying of seamless wall cloth. Through the above-mentioned method, the present invention discloses a seamless wall construction process based on bamboo fiber substrate board, with seamless wall cloth as the finishing layer, bamboo fiber substrate board as the base plate, and thermal insulation technology designed in the wall, to achieve a seamless composite wall with thermal insulation effect, and also has the characteristics of beauty, heat insulation, sound absorption, moisture resistance, flame retardancy, mildew resistance, environmental protection, long life, etc. This method can be directly constructed on the rough wall, and the construction period is short.

The invention provides a preparation method of a polyurethane sound-absorbing spillplate. The preparation method comprises the following steps: mixing and molding cross-linking agent modified graphene, a wear-resistant agent, a processing aid, microspheres and polyurethane, and then carrying out irradiation treatment to obtain the polyurethane sound-absorbing spillplate. The invention solves the problem of poor performance of a polyurethane spillplate in the prior art, and belongs to the field of polyurethane spillplate materials.

The utility model discloses a foaming board for ventilation and heating and a unit shell, the foaming board for ventilation and heating is used for abutting against and sealing a step structure, the step structure is provided with a bottom face and a side face, the foaming board comprises a board body, a protrusion is arranged on the peripheral side of the outer edge of the board body, the protrusion comprises a first end face and a second end face, and the first end face and the second end face are arranged on the board body. The first end face is used for abutting against the bottom face, a strip-shaped elastic sealing piece is arranged on the second end face, the elastic sealing piece is used for extruding the side face, and sealing between the side face and the second end face is achieved by extruding the side face through the elastic sealing piece. The foam board can be installed with the step structure in a matched mode through the protrusions on the outer edge, the side wall of the step structure is completely sealed through the sealing pieces on the protrusions, and due to the fact that the sealing pieces on the periphery of the foam board are in interference fit with the step structure, the sealing pieces are extruded to deform to form a sealing face to achieve the waterproof effect. The structure is higher in efficiency.

A porous body (1) has a crosslinked polymer (11) of a polymerization product of an acrylic monomer and / or a styrene monomer as a base resin. The porous body (1) has a storage elastic modulus at 23°C of 5 kPa or more and 2000 kPa or less. The apparent density of the porous body (1) is 10 kg / m 3 or more and 250 kg / m 3 or less. The crosslinked polymer (11) has a glass transition temperature of -30°C or more. The crosslinked polymer (11) has a molecular weight between crosslinking points of 1.0 x 10 4 or more. The porous body (1) is obtained by polymerizing a monomer in a water-in-oil high internal phase emulsion in which an aqueous phase is enclosed in an organic phase at a high ratio.

The invention relates to a preparation method of foam glass with high sound absorption performance, in particular to a method for preparing foam glass with high sound absorption coefficient by taking diatomite as a functional mixture. The preparation method comprises the following steps: (1) mixing crushed building waste glass or industrial waste glass, diatomite, a foaming agent and a foam stabilizer according to a weight ratio to form a batch; (2) putting the mixed batch into a ball mill for ball milling to obtain batch micro powder; (3) filling the ground micro powder of the batch into a mold, and carrying out compression molding; (4) putting the pressed green body into a furnace, and carrying out one-step firing foaming; and (5) annealing the fired foam glass, and demolding to obtain a finished product. The obtained foam glass is low in cost and high in sound absorption coefficient, is an ideal building sound absorption material and fireproof material, and has a heat insulation function; meanwhile, waste glass is used as a raw material, so that resource utilization of waste is realized.