KR960022353A - Lightweight foamed sound-absorbing and dustproof plate mixed with pulp sludge, and method for manufacturing same - Google Patents

Abstract

The present invention is to provide a method for recycling pulp sludge generated as industrial waste in the papermaking process and to provide an effective sound absorbing and dustproof plate, wherein the sound absorbing dustproof plate of the present invention has a constant thickness composed mainly of pulp sludge and cement. Pulp fiber well-developed pulp fiber and fine air bubbles in the entire solid layer and a uniformly dispersed, lightweight foamed fibrous solid layer, and the support composite is integrally attached to one end surface of the lightweight foamed solid layer It is characterized by consisting of a panel. In addition, in the method for producing a sound absorbing and dustproof plate according to the present invention, 150 to 250 kg of pulp sludge is mixed with cement 750 to 850 kg, and 0.35 to 0.45% by weight of water is added to the mixture and mixed again with cement. A foamed solid prepared by preparing a slurry, and mixed with the cement slurry with about 10 atm of compressed air in order to distribute the bubble dispersion evenly with a 2 to 4% solution, mixed by stirring vigorously at a high speed. It consists of adhering the layers to the supporting composite panel. According to the present invention, pulp sludge generated as industrial waste in the papermaking process can be effectively recycled, and thus, industrial waste waste, which is a pollutant, can be considerably reduced, and the lightweight foamed sound absorbing and dustproof plate produced by the present invention It shows the sound-absorbing and dust-proofing effect which is particularly effective for low sound and low vibration.

Description

Lightweight foamed sound-absorbing and dustproof plate mixed with pulp sludge, and method for manufacturing same

As this is a public information case, the full text was not included.

Claims (9)

A lightweight foamed fibrous solid layer in which fine bubbles are uniformly dispersed and finely dispersed while a well-developed pulp fibrillated phase is dispersed throughout a solid layer of a constant thickness composed mainly of pulp sludge and cement, and the lightweight A lightweight foamed sound absorbing and dustproof plate comprising pulp sludge mixed with a support composite panel integrally attached to one end face of a foamed fibrous solid layer. According to claim 1, wherein the lightweight foamed fibrous solid layer has a foam amount of 0.1 to 0.3 liter (Liter) per product volume lmm ³ , the bubble size is a lightweight foam incorporating pulp sludge, characterized in that 5 ~ 160μm Sound absorption and dustproof plate. The light-weight foamed sound absorbing and dustproof plate mixed with pulp sludge according to claim 1, wherein a mixing ratio of the pulp sludge and cement is (4-2): (6-8). The lightweight foamed sound absorbing and dustproof plate incorporating pulp sludge according to claim 1, wherein the lightweight foamed fibrous solid layer and the support composite panel have a layer thickness of 5 to 10 cm. 5 ~ 160μm over the entire solid layer consisting of pulp sludge or one or a mixture of inorganic powders such as kaolin, silica fume, fly ash, mica and talc having a standard powder size of 5 ~ 100μm Lightweight foam absorption and absorbing pump sludge, comprising a foamed light weight solid layer having irregular microbubbles of size uniformly dispersed, and a support composite panel integrally attached to one end of the foamed light weight fiber solid layer Dustproof plate. The light-weight foamed sound absorbing and dustproof plate containing pulp sludge according to claim 5, wherein the blowing agent is one selected from animal protein, amino sulfate, alcohol ether, and aluminum powder. Pulp sludge was spun, and the pulp sludge was mixed with 150 to 250 kg of cement 750 to 850 kg, and 0.35 to 0.45% by weight of water was added to the mixture to prepare a cement slurry. Lightweight foamed sound-absorbing and dust-proof plate mixed with pulp sludge consisting of mixing foams diluted to 2 to 4% while introducing compressed air at about atmospheric pressure, stirring vigorously at high speed, and curing the coating to a certain thickness on the composite panel. Manufacturing method. 8. The method for producing a lightweight foamed sound absorbing and dustproof plate incorporating pulp sludge according to claim 7, wherein a mixing ratio of the pulp sludge and cement is (4-2): (6-8). The method according to claim 7, wherein the blowing agent is one selected from animal proteins, amino sulfates, alcohol ethers, and aluminum powders, or mixtures thereof. ※ Note: The disclosure is based on the initial application.