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Cement wood-wool acoustic board and preparation method thereof

A sound-absorbing board and wood wool technology, which is applied in the field of building materials, can solve the problems of poor heat insulation effect, low sound-absorbing board toughness, and poor sound-absorbing effect, and achieve good heat preservation effect, excellent water resistance, and UV resistance.

Active Publication Date: 2013-09-18
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a cement wood wool sound-absorbing board and its preparation method, which solves the technical problems of low toughness, poor sound-absorbing effect, poor heat insulation effect and poor moisture resistance in the existing sound-absorbing board

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0037] Lingbitite 100;

[0038] water 60;

[0039] Magnesium chloride 30;

[0040] Poplar silk 50;

[0041] Ferrous sulfate 20;

[0042] Fiberglass 1;

[0043] fly ash 1;

[0044] Talc powder 5;

[0045] Titanium dioxide 0.1;

[0046] AC blowing agent 1.

[0047] The second step: firstly dry the magnesite and crush it together with wood wool and glass fiber, then add fly ash and ferrous sulfate, and mix thoroughly for 5 minutes;

[0048] Step 3: Add magnesium chloride and water to the mixed material in the second step, heat to 55°C, stir to form a slurry, then add talc powder, titanium dioxide and AC foaming agent, heat up to 150°C, and stir to form a slurry Then add it to the mold, and heat-press it with a hot press, pressurize at 0.3 MPa, and press at a temperature of 135°C;

[0049] Step 4: Stand still for 0.5h, decompress and cure for 7 days, cool to 40°C and...

Embodiment 2

[0051] Step 1: Weigh various raw materials according to the ratio of mass and number as described below

[0052] Lingbitite 100;

[0053] water 100;

[0054] Magnesium chloride 50;

[0055] Poplar silk 80;

[0056] Ferrous sulfate 70;

[0057] Fiberglass 25;

[0058] fly ash 10;

[0059] Talc powder 8;

[0060] Titanium dioxide 5;

[0061] AC blowing agent 10.

[0062] The second step: firstly dry the magnesite and crush it together with wood wool and glass fiber, then add fly ash and ferrous sulfate, and mix thoroughly for 5 minutes;

[0063]Step 3: Add magnesium chloride and water to the mixed material in the second step, heat to 55°C, stir to form a slurry, then add talc powder, titanium dioxide and AC foaming agent, heat up to 150°C, and stir to form a slurry Then add it to the mold, and heat-press it by a hot press, pressurize 0.3MPa, and heat-press at a temperature of 145°C;

[0064] Step 4: Stand still for 0.5h, decompress and cure for 7 days, cool to 40°C and...

Embodiment 3

[0066] The first step: Weigh various raw materials according to the ratio of mass and number as described below:

[0067] Lingbitite 100;

[0068] water 80;

[0069] Magnesium chloride 40;

[0070] Poplar silk 65;

[0071] Ferrous sulfate 40;

[0072] Fiberglass 12;

[0073] fly ash 5;

[0074] Talc 6.5;

[0075] Titanium dioxide 2.5;

[0076] AC blowing agent 5.

[0077] The second step: firstly dry the magnesite and crush it together with wood wool and glass fiber, then add fly ash and ferrous sulfate, and mix thoroughly for 5 minutes;

[0078] Step 3: Add magnesium chloride and water to the mixed material in the second step, heat to 55°C, stir to form a slurry, then add talc powder, titanium dioxide and AC foaming agent, heat up to 150°C, and stir to form a slurry Then add it to the mold, and heat-press it by a hot press, pressurize 0.3MPa, and heat-press at a temperature of 140°C;

[0079] Step 4: Stand still for 0.5h, decompress and cure for 7 days, cool to 40°C...

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Abstract

The invention relates to a cement wood-wool acoustic board. The cement wood-wool acoustic board comprises the following components in parts by mass: 100 parts of magnesia, 60-100 parts of water, 30-50 parts of magnesium chloride, 50-80 parts of wood-wool, 20-70 parts of ferrous sulfate, 1-25 parts of a reinforcing agent, 1-10 parts of a heat enhancer, 5-8 parts of a filling agent, 0.1-5 parts of titanium pigment and 1-10 parts of a foaming agent. The cement wood-wool acoustic board is excellent in water resistance, corrosion-free and acid-alkali-resistant, cannot generate shrinkage cracks, has a good heat preservation effect, is resistant to ultraviolet irradiation, and cannot deform easily after moisture absorption; the heat conductivity of the product is 0.1-0.15, the compressive strength is 0.2-0.4Mpa, the acoustic absorption coefficient is up to 0.5, the water absorptivity is 0.8-0.9, the density is 0.9-1.5, and the cement wood-wool acoustic board can be self-distinguished in 5 seconds, so that the cement wood-wool acoustic board can be widely used and continuously replace the existing materials.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a cement wood wool sound-absorbing board and a preparation method thereof. Background technique [0002] Magnesite products are a variety of magnesite products made of magnesium oxide and magnesium chloride as raw materials, glass fiber, plant fiber, etc. as reinforcing materials, sawdust, fly ash, etc. Magnesite biogas tank, magnesite fire door, fireproof board, light wall, table tennis table, building formwork, greenhouse frame pole, thermal insulation color tile, activity room, packing box, pallet, handicraft, manhole cover, light rail sleeper, etc., magnesite material It has a wide range of uses and is a new type of environmentally friendly material. [0003] Magnesite products have many advantages such as green environmental protection, fire prevention and high temperature resistance, heat insulation, energy saving and waste utilization, light weight and high strength, goo...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/32
Inventor 那斌陈红伟卢晓宁黄蓉王志鹏王志强王海芹
Owner NANJING FORESTRY UNIV
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