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CN-121989520-A - Fireproof sound-absorbing plate and manufacturing method thereof

CN121989520ACN 121989520 ACN121989520 ACN 121989520ACN-121989520-A

Abstract

The invention relates to the technical field of fireproof sound absorbing boards, and discloses a fireproof sound absorbing board which comprises a porous decoration surface layer, a first inorganic fiber layer, a sound absorbing substrate layer, a second inorganic fiber layer and a back plate layer which are sequentially stacked from top to bottom, wherein the sound absorbing substrate layer is prepared by mixing, foaming and curing plant fibers, inorganic cementing materials, foaming agents and functional additives, and is of an integrally formed plate structure. The whole components are environment-friendly and harmless, no toxic gas is released, the inorganic fiber layer is firmly bonded, the drifting risk is avoided, and the human health is ensured. The renewable materials are used as raw materials, the production energy consumption is low, the green low-carbon concept is met, the special structure of the substrate layer and the double-layer inorganic fiber layer are used for cooperatively absorbing sound, the effect is far beyond that of the mineral wool board, and the short board in the prior art is solved.

Inventors

  • WEI XU
  • JIANG HUIQING

Assignees

  • 上海胜达峰科技有限公司

Dates

Publication Date
20260508
Application Date
20260105

Claims (10)

  1. 1. The fireproof sound-absorbing board is characterized by comprising a porous decoration surface layer (101), a first inorganic fiber layer (102), a sound-absorbing substrate layer (103), a second inorganic fiber layer (104) and a back plate layer (105) which are sequentially stacked from top to bottom; The sound absorbing substrate layer (103) is prepared by mixing, foaming, curing and forming plant fibers, inorganic cementing materials, foaming agents and functional additives; The sound absorbing substrate layer (103) is of an integrally formed plate structure and comprises a first surface and a second surface which are oppositely arranged, wherein the first surface is provided with a plurality of micropores which are arranged in an array manner, the second surface is provided with a plurality of hemispherical cavities which are arranged in an array manner, and the hemispherical cavities are in one-to-one correspondence with the positions of the micropores; A cylinder is integrally formed in each hemispherical cavity; the micro-holes penetrate through the thickness of the sound absorbing substrate layer (103) and the cylinder along the axial direction of the micro-holes, so that the micro-holes are communicated with the hemispherical cavity.
  2. 2. The fire-resistant sound-absorbing panel according to claim 1, wherein the sound-absorbing substrate layer (103) comprises the following components based on the total mass of dry materials: 10-30 parts of plant fiber; 50-80 parts of inorganic cementing material; 5-15 parts of functional additive; 0.5-2.5 parts of foaming agent; The functional additive comprises diatomite, expanded perlite, sepiolite velvet and wollastonite fiber.
  3. 3. The fireproof sound absorbing panel of claim 2 wherein the functional additive is a compound mixture of diatomite and sepiolite wool in a mass ratio of 1:2.
  4. 4. The fire-resistant sound-absorbing panel according to claim 2, wherein the sound-absorbing substrate layer (103) further comprises 1-4 parts of a water repellent agent, wherein the water repellent agent is a stearate water repellent agent or an organosilicon water repellent agent.
  5. 5. The fire-resistant sound-absorbing panel according to claim 2, wherein the sound-absorbing substrate layer (103) further comprises an accelerator in an amount of 0.5 to 2% by mass of the inorganic gelling material.
  6. 6. The fire-resistant sound-absorbing panel according to claim 1, wherein the plant fiber comprises one of straw fiber, bamboo fiber or agricultural waste fiber, and the inorganic cementing material is magnesium oxysulfide cement, magnesium oxychloride cement or gypsum.
  7. 7. The fire-resistant sound-absorbing panel according to claim 1, characterized in that the porous decorative surface layer (101) is a perforated calcium silicate board, a perforated gypsum board or a perforated metal board, and the back surface layer (105) is a nonwoven fabric, an aluminum foil or a reinforcing fiber cloth.
  8. 8. The fire-resistant sound-absorbing panel according to claim 1, wherein the first inorganic fiber layer (102) and the second inorganic fiber layer (104) are glass fiber felt or ceramic fiber felt, and an adhesive is attached to the surfaces of the first inorganic fiber layer (102) and the second inorganic fiber layer (104).
  9. 9. A method of making a fire resistant acoustic panel as in any one of claims 1-8, comprising the steps of: S1, plant fibers, inorganic cementing materials, functional additives, water and foaming agents are put into a stirrer according to a preset proportion, and are stirred and mixed uniformly at a high speed to obtain fluid slurry; injecting the fluid slurry into a mold, foaming, curing and forming, and demolding to obtain the sound absorbing substrate layer (103), wherein the formed sound absorbing substrate layer (103) has micropores arranged in an array on a first surface and hemispherical cavities corresponding to the micropores one by one on a second surface, and each hemispherical cavity is formed with a cylinder penetrated by the micropores; S2, paving a first inorganic fiber layer (102) on the upper surface of the sound absorbing substrate layer (103), paving a second inorganic fiber layer (104) on the lower surface, covering a porous decoration surface layer (101) on the upper surface of the first inorganic fiber layer (102), and covering a back plate layer (105) on the lower surface of the second inorganic fiber layer (104) to form a laminated blank; S3, sending the laminated blank into a hot press, and enabling the materials of each layer to be firmly compounded at the temperature of 90-110 ℃ and the pressure of 0.8-1.2MPa for 5-10 minutes to obtain a plate blank; And S4, curing, drying and cutting the plate blank to obtain the fireproof sound-absorbing plate.
  10. 10. The method of manufacturing a fire-resistant sound-absorbing panel according to claim 9, wherein in S2, an aqueous adhesive is sprayed or roll-coated on the surface thereof in contact with the sound-absorbing substrate layer (103) before the first inorganic fiber layer (102) and the second inorganic fiber layer (104) are laid.

Description

Fireproof sound-absorbing plate and manufacturing method thereof Technical Field The invention relates to the technical field of fireproof sound-absorbing boards, in particular to a fireproof sound-absorbing board and a manufacturing method thereof. Background Along with the rapid development of the economy in China, the requirements of people on living environments are higher and higher, and particularly in the field of buildings, the requirements on the functionality, the environmental protection and the safety of building materials are higher and higher. The fireproof sound-absorbing plate is used as a novel building material, has excellent fireproof performance and sound-absorbing effect, and is widely applied to meeting rooms, concert halls, theatres and other places; currently, the main fireproof acoustic boards in the market mainly comprise the following categories; The polyurethane fireproof acoustic board is made of polyurethane foam materials, and has good fireproof and acoustic performance, but has the obvious defects that firstly, raw materials and production process are high in cost and limit large-scale application; The glass wool fireproof sound-absorbing board takes glass wool as a main sound-absorbing material, and has good fireproof and sound-absorbing effects. However, the glass fiber is brittle and hard, and is easy to fly into the air when being used, installed or damaged, and the glass fiber can irritate the respiratory tract and the skin after being inhaled by a human body, so that health risks exist. Meanwhile, the production of glass wool belongs to a high-energy consumption process, and is contrary to the current environment-friendly concept of green and low carbon; The mineral wool fireproof sound-absorbing board is made of mineral wool and has certain fireproof and sound-absorbing capacities. However, the material itself is easy to sinter and release the irritant harmful gases such as sulfides in a high temperature environment (such as a fire disaster early stage), which not only damages the health of human bodies, but also may corrode the precision instruments and equipment. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a fireproof acoustic board and a manufacturing method thereof, and solves the problems that the existing polyurethane fireproof acoustic board is high in cost and easy to release toxic gas, the glass wool fireproof acoustic board has hidden health hazards and high production energy consumption, and the mineral wool fireproof acoustic board releases harmful gas at high temperature and is poor in acoustic effect. The fireproof sound-absorbing board comprises a porous decoration surface layer, a first inorganic fiber layer, a sound-absorbing substrate layer, a second inorganic fiber layer and a back plate layer which are sequentially laminated from top to bottom; The sound absorbing substrate layer is prepared by mixing, foaming and curing plant fibers, inorganic cementing materials, foaming agents and functional additives; The sound absorbing substrate layer is of an integrally formed plate structure and comprises a first surface and a second surface which are oppositely arranged, wherein the first surface is provided with a plurality of micropores which are arranged in an array, the second surface is provided with a plurality of hemispherical cavities which are arranged in an array, and the hemispherical cavities are in one-to-one correspondence with the positions of the micropores; A cylinder is integrally formed in each hemispherical cavity; the micropores penetrate through the thickness of the sound absorbing substrate layer and the cylinder along the axial direction of the micropores, so that the micropores are communicated with the hemispherical cavity. Preferably, the sound absorbing substrate layer comprises the following components based on the total mass of dry materials: 10-30 parts of plant fiber; 50-80 parts of inorganic cementing material; 5-15 parts of functional additive; 0.5-2.5 parts of foaming agent; The functional additive comprises diatomite, expanded perlite, sepiolite velvet and wollastonite fiber. Preferably, the functional additive is a compound mixture of diatomite and sepiolite velvet, and the mass ratio of the diatomite to the sepiolite velvet is 1:2. Preferably, the sound absorbing substrate layer further comprises 1-4 parts of water repellent, wherein the water repellent is stearate water repellent or organic silicon water repellent. Preferably, the composition of the sound absorbing substrate layer further comprises 0.5% -2% of a coagulant agent by mass of the inorganic cementing material. Preferably, the plant fiber comprises one of straw fiber, bamboo fiber or agricultural waste fiber, and the inorganic cementing material is magnesium oxysulfide cement, magnesium oxychloride cement or gypsum. Preferably, the porous decorative surface layer is a perforated silicon-calcium plate, a perforated g