CN111100469A - High-strength polyester fiber acoustic board and preparation method thereof - Google Patents
High-strength polyester fiber acoustic board and preparation method thereof Download PDFInfo
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- CN111100469A CN111100469A CN201911374050.5A CN201911374050A CN111100469A CN 111100469 A CN111100469 A CN 111100469A CN 201911374050 A CN201911374050 A CN 201911374050A CN 111100469 A CN111100469 A CN 111100469A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Abstract
The invention provides a high-strength polyester fiber sound-absorbing board and a preparation method thereof, which relate to the field of building boards and comprise the following components in parts by weight: 150 parts of wheat straw powder, 20-30 parts of high-density polyethylene, 30-40 parts of pre-coated hollow polyester fiber, 10-20 parts of basalt fiber, 18-25 parts of porous silicon carbide ceramic nano powder, 2-5 parts of nano cellulose, 1-3 parts of stearic acid, 4-6 parts of heavy calcium carbonate, 1-3 parts of light calcium carbonate, 20-30 parts of sesbania gum, 1-5 parts of polyvinyl alcohol/starch adhesive, 5-10 parts of nano titanium dioxide and 2-5 parts of EBS diffusion powder.
Description
Technical Field
The invention relates to the field of building boards, in particular to a high-strength polyester fiber sound-absorbing board and a preparation method thereof.
Background
The noise is the sound produced when the sounding body does irregular vibration. Sound is generated by the vibration of an object and propagates in a certain medium (e.g., solid, liquid, gas) in the form of waves. Noise pollution is commonly referred to as being artificially created. From a physiological point of view, all sounds that disturb people's rest, study and work and that interfere with the sound you hear, i.e. unwanted sounds, are collectively referred to as noise. Noise pollution is created when noise adversely affects people and the surrounding environment. Since the industrial revolution, the creation and use of various mechanical devices has brought prosperous and advanced to human beings, but at the same time, more and more noises are generated. The noise can not only cause damage to hearing, but also induce a plurality of carcinogenic and fatal diseases and interfere with life and work of people.
Traffic noise includes noise of motor vehicles, ships, subways, trains, airplanes, etc. Due to the rapid increase in the number of motor vehicles, traffic noise is becoming a major source of noise in cities, noise generated by various devices of industrial noise factories. Industrial noise is generally high in sound level, and has a large influence on workers and surrounding residents, and construction noise mainly originates from noise emitted by construction machinery. The building noise is characterized by high intensity and is mostly generated in densely populated areas, so the rest and the life of residents are seriously influenced, and the social noise comprises social activities of people and noise emitted by household appliances and acoustic equipment. Although the noise level of the devices is not high, the devices are closely related to the daily life of people, so that people cannot be quiet during rest, particularly, the devices are worried, and neighborhood disputes are easily caused.
The most direct harm of noise to human bodies is hearing impairment, when people enter a strong noise environment, the people can feel difficulty in ears and even feel headache after being exposed for a period of time, because the noise acts on a central nervous system of a brain through auditory organs so as to affect all organs of the whole body, the noise can cause damage to the hearing of the people, also brings harm to other systems of the human body, induces various diseases, the noise has great influence on the sleep of the people, even if the people are in sleep, the auditory sense is subject to the stimulation of the noise, and the noise can cause dreaminess, easy frightening, sleep quality reduction and the like.
At present often come the noise reduction through the abatvoix in the building work progress, the abatvoix utilizes the reduction reflection or absorbs the purpose that the sound energy reaches the noise reduction completely, and the abatvoix is porous structure mostly, and the sound wave gets into porous material or arouses the board vibration back of flexible deformation, and the sound energy turns into heat energy consumption to lead to playing the purpose of inhaling the sound.
Chinese patent CN 108218316A discloses an acoustic board, which comprises the following components by weight: 25 parts of bentonite, 30 parts of cement, 18 parts of coral reef powder, 4 parts of anionic surfactant, 25 parts of quartz powder, 15 parts of fly ash, 8 parts of grinding wheel ash, 35 parts of glycol-water solution, 11 parts of iodide salt, 7 parts of zinc oxide, 35 parts of TPO, 20 parts of lignocellulose, 15 parts of carbamide and 7 parts of lubricant. The sound absorption plate has good sound absorption performance and strong mechanical property, and plays a role in compensating for the reduction of the mechanical property of the material caused by the pores, so that the service life of the sound absorption plate is prolonged, and the sound absorption plate is suitable for large-scale popularization.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a high-strength polyester fiber sound-absorbing board and a preparation method thereof.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a high-strength polyester fiber acoustic board comprises the following components in parts by weight:
120-150 parts of wheat straw powder, 20-30 parts of high-density polyethylene, 30-40 parts of pre-coated hollow polyester fiber, 10-20 parts of basalt fiber, 18-25 parts of porous silicon carbide ceramic nano powder, 2-5 parts of nano cellulose, 1-3 parts of stearic acid, 4-6 parts of heavy calcium carbonate, 1-3 parts of light calcium carbonate, 20-30 parts of sesbania gum, 1-5 parts of polyvinyl alcohol/starch adhesive, 5-10 parts of nano titanium dioxide and 2-5 parts of EBS diffusion powder.
Preferably, the composition comprises the following components in parts by weight:
145 parts of wheat straw powder, 22 parts of high-density polyethylene, 30 parts of pre-coated hollow polyester fiber, 15 parts of basalt fiber, 20 parts of porous silicon carbide ceramic nano powder, 2.5 parts of nano cellulose, 2 parts of stearic acid, 5 parts of heavy calcium carbonate, 3 parts of light calcium carbonate, 30 parts of sesbania gum, 3 parts of polyvinyl alcohol/starch adhesive, 6 parts of nano titanium dioxide and 5 parts of EBS diffusion powder.
Preferably, the composition comprises the following components in parts by weight:
140 parts of wheat straw powder, 30 parts of high-density polyethylene, 40 parts of pre-coated hollow polyester fiber, 12 parts of basalt fiber, 24 parts of porous silicon carbide ceramic nano powder, 5 parts of nano cellulose, 2 parts of stearic acid, 5 parts of heavy calcium carbonate, 2 parts of light calcium carbonate, 30 parts of sesbania gum, 4 parts of polyvinyl alcohol/starch adhesive, 8 parts of nano titanium dioxide and 4 parts of EBS diffusion powder.
Preferably, the preparation method of the pre-coated hollow polyester fiber is to form a nano-silica coating layer on the surface of the modified hollow polyester fiber by using a hydrothermal method.
Preferably, the preparation method of the pre-coated hollow polyester fiber comprises the following steps:
(1) adding a silane coupling agent into deionized water, adjusting the pH value to 2, heating to 30-35 ℃, adding hollow polyester fibers with the length of 5-10mm, mechanically stirring for 6-10h, filtering, washing with water to be neutral, and drying;
(2) adding sodium dodecyl sulfate into deionized water, stirring, dissolving, adding the modified hollow polyester fiber, performing ultrasonic oscillation for 10-15min, adding water glass, dropwise adding a sulfuric acid solution at a stirring speed of 20-30r/min, and standing to obtain gel;
(3) transferring the gel into a high-pressure kettle, heating to 130-150 ℃, reacting for 15-20h, cooling, taking out, washing with water until the gel does not contain sulfate ions, drying at 90-100 ℃, and screening to obtain the pre-coated hollow polyester fiber.
Preferably, the mass concentration of the sulfuric acid solution is 5-8%.
Preferably, the preparation method of the polyvinyl alcohol/starch adhesive is as follows:
heating the polyvinyl alcohol solution to 80-90 ℃, stirring and dissolving, cooling to 40-50 ℃, adding potassium persulfate, stirring and reacting for 30-50min, adding the pregelatinized starch, continuously stirring and reacting for 1-3h, adding boric acid, reacting for 20-30min, and cooling.
Preferably, the mass concentration of the polyvinyl alcohol solution is 20-25%.
Preferably, the weight ratio of the polyvinyl alcohol solution, the pregelatinized starch and the boric acid is 150-: 20-30: 1-5.
The preparation method of the high-strength polyester fiber acoustic board comprises the following specific steps:
adding wheat straw powder, porous silicon carbide ceramic nano powder, heavy calcium carbonate, light calcium carbonate and nano titanium dioxide into a ball mill, and ball-milling for 30-40min to obtain a mixed material, wherein the ball-material ratio is 5: 1, adding the mixed material, high-density polyethylene, pre-coated hollow polyester fiber, basalt fiber, nano-cellulose, stearic acid and EBS diffusion powder into a high-speed mixer, uniformly mixing, adding into an extruder for crosslinking, extruding to obtain master batches, mixing the master batches with sesbania gum and polyvinyl alcohol/starch adhesive, adding into a mold, and carrying out hot-press molding at the temperature of 110 ℃ and 10-15MPa and cooling.
(III) advantageous effects
The invention provides a high-strength polyester fiber acoustic board and a preparation method thereof, and the high-strength polyester fiber acoustic board has the following beneficial effects:
wheat straw as agricultural waste is used as a precedent of building blocks or plates, the hollow structure of the wheat straw is endowed with certain heat preservation and sound absorption performance, but the wheat straw cannot be widely popularized and used in large area due to poor strength, the hollow polyester fiber has a three-dimensional distribution structure and is not wound, the wheat straw powder is well supported, the hollow polyester fiber is uniformly distributed in the wheat straw powder and has certain reinforcement effect, the stiffness modulus of the hollow polyester fiber is increased, the mechanical property is improved, and the strength is improved, in addition, the pre-coating treatment is carried out on the hollow polyester fiber, on one hand, the compatibility between the hollow polyester fiber and the wheat straw powder and inorganic fillers is improved, on the other hand, the toughness of the hollow polyester fiber is further improved, the basalt fiber is used as an auxiliary toughening fiber and forms criss-cross reinforcement and bridging effects with the pre-coated hollow polyester fiber, the wheat straw powder can be firmly bound to prevent the wheat straw, the sound wave enters the sound-absorbing board, and continuously vibrates in the gaps formed by the mutual communication of the wheat straw powder and is finally absorbed, the addition of the rest inorganic filler can play a role in supplementing and enhancing, and sesbania gum and polyvinyl alcohol/starch gum adhesive are compounded for use, so that inorganic, organic and high polymer materials can be tightly connected together to form a surface with continuous stress distribution, and the sound-absorbing board is green and environment-friendly.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a high-strength polyester fiber acoustic board comprises the following components in parts by weight:
145 parts of wheat straw powder, 22 parts of high-density polyethylene, 30 parts of pre-coated hollow polyester fiber, 15 parts of basalt fiber, 20 parts of porous silicon carbide ceramic nano powder, 2.5 parts of nano cellulose, 2 parts of stearic acid, 5 parts of heavy calcium carbonate, 3 parts of light calcium carbonate, 30 parts of sesbania gum, 3 parts of polyvinyl alcohol/starch adhesive, 6 parts of nano titanium dioxide and 5 parts of EBS diffusion powder.
The preparation method of the pre-coated hollow polyester fiber comprises the following steps:
adding a silane coupling agent into deionized water, adjusting the pH value to 2, heating to 30 ℃, adding hollow polyester fibers with the length of 5-10mm, mechanically stirring for 8 hours, filtering, washing to be neutral, drying, adding sodium dodecyl sulfate into the deionized water, stirring, dissolving, adding the modified hollow polyester fibers, ultrasonically oscillating for 12 minutes, adding water glass, dripping sulfuric acid solution with the mass concentration of 6% at the stirring speed of 30r/min, standing to obtain gel after dripping, transferring the gel into a high-pressure kettle, heating to 135 ℃, reacting for 18 hours, cooling, taking out, washing until the gel does not contain sulfate ions, drying at 100 ℃, and screening to obtain the pre-coated hollow polyester fibers.
The preparation method of the polyvinyl alcohol/starch adhesive comprises the following steps:
heating a polyvinyl alcohol solution with the mass concentration of 24% to 85 ℃, stirring and dissolving, cooling to 50 ℃, adding potassium persulfate, stirring and reacting for 35min, adding pregelatinized starch, continuing to stir and react for 3h, adding boric acid, reacting for 30min, and cooling, wherein the weight ratio of the polyvinyl alcohol solution to the pregelatinized starch to the boric acid is 180: 25: 3.
the preparation method of the high-strength polyester fiber acoustic board comprises the following specific steps:
adding wheat straw powder, porous silicon carbide ceramic nano powder, heavy calcium carbonate, light calcium carbonate and nano titanium dioxide into a ball mill, and ball-milling for 40min to obtain a mixed material, wherein the ball-material ratio is 5: 1, adding the mixed material, high-density polyethylene, pre-coated hollow polyester fiber, basalt fiber, nano-cellulose, stearic acid and EBS diffusion powder into a high-speed mixer, uniformly mixing, adding into an extruder for crosslinking, extruding to obtain master batches, mixing the master batches with sesbania gum and a polyvinyl alcohol/starch adhesive, adding into a mold, and carrying out hot press molding at 110 ℃ and 12MPa for cooling.
Example 2:
a high-strength polyester fiber acoustic board comprises the following components in parts by weight:
140 parts of wheat straw powder, 30 parts of high-density polyethylene, 40 parts of pre-coated hollow polyester fiber, 12 parts of basalt fiber, 24 parts of porous silicon carbide ceramic nano powder, 5 parts of nano cellulose, 2 parts of stearic acid, 5 parts of heavy calcium carbonate, 2 parts of light calcium carbonate, 30 parts of sesbania gum, 4 parts of polyvinyl alcohol/starch adhesive, 8 parts of nano titanium dioxide and 4 parts of EBS diffusion powder.
The preparation method of the pre-coated hollow polyester fiber comprises the following steps:
adding a silane coupling agent into deionized water, adjusting the pH value to 2, heating to 35 ℃, adding hollow polyester fibers with the length of 5-10mm, mechanically stirring for 10 hours, filtering, washing with water to be neutral, drying, adding sodium dodecyl sulfate into the deionized water, stirring, dissolving, adding the modified hollow polyester fibers, ultrasonically oscillating for 12 minutes, adding water glass, dripping sulfuric acid solution with the mass concentration of 8% at the stirring speed of 30r/min, standing to obtain gel after dripping, transferring the gel into a high-pressure kettle, heating to 140 ℃, reacting for 20 hours, cooling, taking out, washing with water until the gel does not contain sulfate ions, drying at 100 ℃, and screening to obtain the pre-coated hollow polyester fibers.
The preparation method of the polyvinyl alcohol/starch adhesive comprises the following steps:
heating a polyvinyl alcohol solution with the mass concentration of 20% to 85 ℃, stirring and dissolving, cooling to 50 ℃, adding potassium persulfate, stirring and reacting for 50min, adding pregelatinized starch, continuing to stir and react for 2h, adding boric acid, reacting for 25min, and cooling, wherein the weight ratio of the polyvinyl alcohol solution to the pregelatinized starch to the boric acid is 160: 25: 2.
the preparation method of the high-strength polyester fiber acoustic board comprises the following specific steps:
adding wheat straw powder, porous silicon carbide ceramic nano powder, heavy calcium carbonate, light calcium carbonate and nano titanium dioxide into a ball mill, and ball-milling for 40min to obtain a mixed material, wherein the ball-material ratio is 5: 1, adding the mixed material, high-density polyethylene, pre-coated hollow polyester fiber, basalt fiber, nano-cellulose, stearic acid and EBS diffusion powder into a high-speed mixer, uniformly mixing, adding into an extruder for crosslinking, extruding to obtain master batches, mixing the master batches with sesbania gum and a polyvinyl alcohol/starch adhesive, adding into a mold, and carrying out hot press molding at 100 ℃ and 12MPa for cooling.
Example 3:
a high-strength polyester fiber acoustic board comprises the following components in parts by weight:
130 parts of wheat straw powder, 22 parts of high-density polyethylene, 35 parts of pre-coated hollow polyester fiber, 20 parts of basalt fiber, 20 parts of porous silicon carbide ceramic nano powder, 4 parts of nano cellulose, 2.5 parts of stearic acid, 5 parts of heavy calcium carbonate, 2 parts of light calcium carbonate, 30 parts of sesbania gum, 2 parts of polyvinyl alcohol/starch adhesive, 6 parts of nano titanium dioxide and 4 parts of EBS diffusion powder.
The preparation method of the pre-coated hollow polyester fiber comprises the following steps:
adding a silane coupling agent into deionized water, adjusting the pH value to 2, heating to 35 ℃, adding hollow polyester fibers with the length of 5-10mm, mechanically stirring for 8 hours, filtering, washing with water to be neutral, drying, adding sodium dodecyl sulfate into the deionized water, stirring, dissolving, adding the modified hollow polyester fibers, ultrasonically oscillating for 12 minutes, adding water glass, dripping a sulfuric acid solution with the mass concentration of 7% at the stirring speed of 30r/min, standing to obtain gel after dripping, transferring the gel into a high-pressure kettle, heating to 135 ℃, reacting for 16 hours, cooling, taking out, washing with water until the gel does not contain sulfate ions, drying at 100 ℃, and screening to obtain the pre-coated hollow polyester fibers.
The preparation method of the polyvinyl alcohol/starch adhesive comprises the following steps:
heating a polyvinyl alcohol solution with the mass concentration of 25% to 85 ℃, stirring and dissolving, cooling to 40 ℃, adding potassium persulfate, stirring and reacting for 40min, adding pregelatinized starch, continuing to stir and react for 1h, adding boric acid, reacting for 20min, and cooling, wherein the weight ratio of the polyvinyl alcohol solution to the pregelatinized starch to the boric acid is 180: 30: 1.
the preparation method of the high-strength polyester fiber acoustic board comprises the following specific steps:
adding wheat straw powder, porous silicon carbide ceramic nano powder, heavy calcium carbonate, light calcium carbonate and nano titanium dioxide into a ball mill, and ball-milling for 30min to obtain a mixed material, wherein the ball-material ratio is 5: 1, adding the mixed material and high-density polyethylene, pre-coated hollow polyester fiber, basalt fiber, nano-cellulose, stearic acid and EBS diffusion powder into a high-speed mixer, uniformly mixing, adding into an extruder for crosslinking, extruding to obtain master batches, mixing the master batches with sesbania gum and polyvinyl alcohol/starch adhesive, adding into a mold, and carrying out hot press molding at 102 ℃ and 11MPa for cooling.
Example 4:
a high-strength polyester fiber acoustic board comprises the following components in parts by weight:
150 parts of wheat straw powder, 30 parts of high-density polyethylene, 35 parts of pre-coated hollow polyester fiber, 12 parts of basalt fiber, 20 parts of porous silicon carbide ceramic nano powder, 3 parts of nano cellulose, 1 part of stearic acid, 5 parts of heavy calcium carbonate, 2 parts of light calcium carbonate, 22 parts of sesbania gum, 4 parts of polyvinyl alcohol/starch adhesive, 8 parts of nano titanium dioxide and 2 parts of EBS diffusion powder.
The preparation method of the pre-coated hollow polyester fiber comprises the following steps:
adding a silane coupling agent into deionized water, adjusting the pH value to 2, heating to 32 ℃, adding hollow polyester fibers with the length of 5-10mm, mechanically stirring for 6 hours, filtering, washing with water to be neutral, drying, adding sodium dodecyl sulfate into the deionized water, stirring, dissolving, adding the modified hollow polyester fibers, ultrasonically oscillating for 12 minutes, adding water glass, dripping sulfuric acid solution with the mass concentration of 6% at the stirring speed of 30r/min, standing to obtain gel after dripping, transferring the gel into a high-pressure kettle, heating to 140 ℃, reacting for 18 hours, cooling, taking out, washing with water until the gel does not contain sulfate ions, drying at 100 ℃, and screening to obtain the pre-coated hollow polyester fibers.
The preparation method of the polyvinyl alcohol/starch adhesive comprises the following steps:
heating a polyvinyl alcohol solution with the mass concentration of 20% to 80 ℃, stirring and dissolving, cooling to 45 ℃, adding potassium persulfate, stirring and reacting for 40min, adding pregelatinized starch, continuing to stir and react for 1h, adding boric acid, reacting for 30min, and cooling, wherein the weight ratio of the polyvinyl alcohol solution to the pregelatinized starch to the boric acid is 180: 22: 5.
the preparation method of the high-strength polyester fiber acoustic board comprises the following specific steps:
adding wheat straw powder, porous silicon carbide ceramic nano powder, heavy calcium carbonate, light calcium carbonate and nano titanium dioxide into a ball mill, and ball-milling for 40min to obtain a mixed material, wherein the ball-material ratio is 5: 1, adding the mixed material and high-density polyethylene, pre-coated hollow polyester fiber, basalt fiber, nano-cellulose, stearic acid and EBS diffusion powder into a high-speed mixer, uniformly mixing, adding into an extruder for crosslinking, extruding to obtain master batches, mixing the master batches with sesbania gum and polyvinyl alcohol/starch adhesive, adding into a mold, and carrying out hot press molding at 108 ℃ and 14MPa and cooling.
Example 5:
a high-strength polyester fiber acoustic board comprises the following components in parts by weight:
120 parts of wheat straw powder, 20 parts of high-density polyethylene, 30 parts of pre-coated hollow polyester fiber, 10 parts of basalt fiber, 18 parts of porous silicon carbide ceramic nano powder, 2 parts of nano cellulose, 1 part of stearic acid, 4 parts of heavy calcium carbonate, 1 part of light calcium carbonate, 20 parts of sesbania gum, 1 part of polyvinyl alcohol/starch adhesive, 5 parts of nano titanium dioxide and 2 parts of EBS diffusion powder.
The preparation method of the pre-coated hollow polyester fiber comprises the following steps:
adding a silane coupling agent into deionized water, adjusting the pH value to 2, heating to 30 ℃, adding hollow polyester fibers with the length of 5-10mm, mechanically stirring for 6 hours, filtering, washing to be neutral, drying, adding sodium dodecyl sulfate into the deionized water, stirring, dissolving, adding the modified hollow polyester fibers, ultrasonically oscillating for 10 minutes, adding water glass, dropwise adding a sulfuric acid solution with the mass concentration of 5% at the stirring speed of 20r/min, standing after dropwise adding to obtain gel, transferring the gel into a high-pressure kettle, heating to 130 ℃, reacting for 15 hours, cooling, taking out, washing until the gel does not contain sulfate ions, drying at 90 ℃, and screening to obtain the pre-coated hollow polyester fibers.
The preparation method of the polyvinyl alcohol/starch adhesive comprises the following steps:
heating a polyvinyl alcohol solution with the mass concentration of 20% to 80 ℃, stirring and dissolving, cooling to 40 ℃, adding potassium persulfate, stirring and reacting for 30min, adding pregelatinized starch, continuing to stir and react for 1h, adding boric acid, reacting for 20min, and cooling, wherein the weight ratio of the polyvinyl alcohol solution to the pregelatinized starch to the boric acid is 150: 20: 1.
the preparation method of the high-strength polyester fiber acoustic board comprises the following specific steps:
adding wheat straw powder, porous silicon carbide ceramic nano powder, heavy calcium carbonate, light calcium carbonate and nano titanium dioxide into a ball mill, and ball-milling for 30min to obtain a mixed material, wherein the ball-material ratio is 5: 1, adding the mixed material and high-density polyethylene, pre-coated hollow polyester fiber, basalt fiber, nano-cellulose, stearic acid and EBS diffusion powder into a high-speed mixer, uniformly mixing, adding into an extruder for crosslinking, extruding to obtain master batches, mixing the master batches with sesbania gum and polyvinyl alcohol/starch adhesive, adding into a mold, and carrying out hot press molding at 100 ℃ and 10MPa for cooling.
Example 6:
a high-strength polyester fiber acoustic board comprises the following components in parts by weight:
150 parts of wheat straw powder, 30 parts of high-density polyethylene, 40 parts of pre-coated hollow polyester fiber, 20 parts of basalt fiber, 25 parts of porous silicon carbide ceramic nano powder, 5 parts of nano cellulose, 3 parts of stearic acid, 6 parts of heavy calcium carbonate, 3 parts of light calcium carbonate, 30 parts of sesbania gum, 5 parts of polyvinyl alcohol/starch adhesive, 10 parts of nano titanium dioxide and 5 parts of EBS diffusion powder.
The preparation method of the pre-coated hollow polyester fiber comprises the following steps:
adding a silane coupling agent into deionized water, adjusting the pH value to 2, heating to 35 ℃, adding hollow polyester fibers with the length of 5-10mm, mechanically stirring for 10 hours, filtering, washing with water to be neutral, drying, adding sodium dodecyl sulfate into the deionized water, stirring, dissolving, adding the modified hollow polyester fibers, ultrasonically oscillating for 15 minutes, adding water glass, dripping sulfuric acid solution with the mass concentration of 8% at the stirring speed of 30r/min, standing to obtain gel after dripping, transferring the gel into a high-pressure kettle, heating to 150 ℃, reacting for 20 hours, cooling, taking out, washing with water until the gel does not contain sulfate ions, drying at 100 ℃, and screening to obtain the pre-coated hollow polyester fibers.
The preparation method of the polyvinyl alcohol/starch adhesive comprises the following steps:
heating a polyvinyl alcohol solution with the mass concentration of 25% to 90 ℃, stirring and dissolving, cooling to 50 ℃, adding potassium persulfate, stirring and reacting for 50min, adding pregelatinized starch, continuing to stir and react for 3h, adding boric acid, reacting for 30min, and cooling, wherein the weight ratio of the polyvinyl alcohol solution to the pregelatinized starch to the boric acid is 200: 30: 5.
the preparation method of the high-strength polyester fiber acoustic board comprises the following specific steps:
adding wheat straw powder, porous silicon carbide ceramic nano powder, heavy calcium carbonate, light calcium carbonate and nano titanium dioxide into a ball mill, and ball-milling for 40min to obtain a mixed material, wherein the ball-material ratio is 5: 1, adding the mixed material and high-density polyethylene, pre-coated hollow polyester fiber, basalt fiber, nano-cellulose, stearic acid and EBS diffusion powder into a high-speed mixer, uniformly mixing, adding into an extruder for crosslinking, extruding to obtain master batches, mixing the master batches with sesbania gum and polyvinyl alcohol/starch adhesive, adding into a mold, and carrying out hot press molding at 110 ℃ and 15MPa for cooling.
Example 7:
a high-strength polyester fiber acoustic board comprises the following components in parts by weight:
120 parts of wheat straw powder, 30 parts of high-density polyethylene, 30 parts of pre-coated hollow polyester fiber, 20 parts of basalt fiber, 18 parts of porous silicon carbide ceramic nano powder, 5 parts of nano cellulose, 1 part of stearic acid, 6 parts of heavy calcium carbonate, 1 part of light calcium carbonate, 30 parts of sesbania gum, 1 part of polyvinyl alcohol/starch adhesive, 10 parts of nano titanium dioxide and 2 parts of EBS diffusion powder.
The preparation method of the pre-coated hollow polyester fiber comprises the following steps:
adding a silane coupling agent into deionized water, adjusting the pH value to 2, heating to 35 ℃, adding hollow polyester fibers with the length of 5-10mm, mechanically stirring for 6 hours, filtering, washing with water to be neutral, drying, adding sodium dodecyl sulfate into the deionized water, stirring, dissolving, adding the modified hollow polyester fibers, ultrasonically oscillating for 15 minutes, adding water glass, dripping sulfuric acid solution with the mass concentration of 8% at the stirring speed of 20r/min, standing to obtain gel after dripping, transferring the gel into a high-pressure kettle, heating to 130 ℃, reacting for 20 hours, cooling, taking out, washing with water until the gel does not contain sulfate ions, drying at 90 ℃, and screening to obtain the pre-coated hollow polyester fibers.
The preparation method of the polyvinyl alcohol/starch adhesive comprises the following steps:
heating a polyvinyl alcohol solution with the mass concentration of 25% to 80 ℃, stirring and dissolving, cooling to 50 ℃, adding potassium persulfate, stirring and reacting for 30min, adding pregelatinized starch, continuing to stir and react for 3h, adding boric acid, reacting for 20min, and cooling, wherein the weight ratio of the polyvinyl alcohol solution to the pregelatinized starch to the boric acid is 200: 20: 5.
the preparation method of the high-strength polyester fiber acoustic board comprises the following specific steps:
adding wheat straw powder, porous silicon carbide ceramic nano powder, heavy calcium carbonate, light calcium carbonate and nano titanium dioxide into a ball mill, and ball-milling for 30min to obtain a mixed material, wherein the ball-material ratio is 5: 1, adding the mixed material and high-density polyethylene, pre-coated hollow polyester fiber, basalt fiber, nano-cellulose, stearic acid and EBS diffusion powder into a high-speed mixer, uniformly mixing, adding into an extruder for crosslinking, extruding to obtain master batches, mixing the master batches with sesbania gum and polyvinyl alcohol/starch adhesive, adding into a mold, and carrying out hot press molding at 110 ℃ and 10MPa for cooling.
Example 8:
a high-strength polyester fiber acoustic board comprises the following components in parts by weight:
150 parts of wheat straw powder, 20 parts of high-density polyethylene, 40 parts of pre-coated hollow polyester fiber, 10 parts of basalt fiber, 25 parts of porous silicon carbide ceramic nano powder, 2 parts of nano cellulose, 3 parts of stearic acid, 4 parts of heavy calcium carbonate, 3 parts of light calcium carbonate, 20 parts of sesbania gum, 5 parts of polyvinyl alcohol/starch adhesive, 5 parts of nano titanium dioxide and 5 parts of EBS diffusion powder.
The preparation method of the pre-coated hollow polyester fiber comprises the following steps:
adding a silane coupling agent into deionized water, adjusting the pH value to 2, heating to 30 ℃, adding hollow polyester fibers with the length of 5-10mm, mechanically stirring for 10 hours, filtering, washing to be neutral, drying, adding sodium dodecyl sulfate into the deionized water, stirring, dissolving, adding the modified hollow polyester fibers, ultrasonically oscillating for 10 minutes, adding water glass, dripping a sulfuric acid solution with the mass concentration of 5% at the stirring speed of 30r/min, standing to obtain gel after dripping, transferring the gel into a high-pressure kettle, heating to 150 ℃, reacting for 15 hours, cooling, taking out, washing until the gel does not contain sulfate ions, drying at 100 ℃, and screening to obtain the pre-coated hollow polyester fibers.
The preparation method of the polyvinyl alcohol/starch adhesive comprises the following steps:
heating a polyvinyl alcohol solution with the mass concentration of 20% to 90 ℃, stirring and dissolving, cooling to 40 ℃, adding potassium persulfate, stirring and reacting for 50min, adding pregelatinized starch, continuing to stir and react for 1h, adding boric acid, reacting for 30min, and cooling, wherein the weight ratio of the polyvinyl alcohol solution to the pregelatinized starch to the boric acid is 150: 30: 1.
the preparation method of the high-strength polyester fiber acoustic board comprises the following specific steps:
adding wheat straw powder, porous silicon carbide ceramic nano powder, heavy calcium carbonate, light calcium carbonate and nano titanium dioxide into a ball mill, and ball-milling for 40min to obtain a mixed material, wherein the ball-material ratio is 5: 1, adding the mixed material and high-density polyethylene, pre-coated hollow polyester fiber, basalt fiber, nano-cellulose, stearic acid and EBS diffusion powder into a high-speed mixer, uniformly mixing, adding into an extruder for crosslinking, extruding to obtain master batches, mixing the master batches with sesbania gum and polyvinyl alcohol/starch adhesive, adding into a mold, and carrying out hot press molding at 100 ℃ and 15MPa for cooling.
Table 1 below shows the results of the performance tests of the acoustic panels of examples 1 to 3 according to the invention:
table 1:
as shown in the table 1, the polyester fiber acoustic board has extremely high mechanical strength, excellent thermal insulation performance and can greatly reduce noise pollution.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The high-strength polyester fiber sound-absorbing board is characterized by comprising the following components in parts by weight:
120-150 parts of wheat straw powder, 20-30 parts of high-density polyethylene, 30-40 parts of pre-coated hollow polyester fiber, 10-20 parts of basalt fiber, 18-25 parts of porous silicon carbide ceramic nano powder, 2-5 parts of nano cellulose, 1-3 parts of stearic acid, 4-6 parts of heavy calcium carbonate, 1-3 parts of light calcium carbonate, 20-30 parts of sesbania gum, 1-5 parts of polyvinyl alcohol/starch adhesive, 5-10 parts of nano titanium dioxide and 2-5 parts of EBS diffusion powder.
2. The high strength polyester fiber sound-absorbing sheet according to claim 1, comprising the following components in parts by weight:
145 parts of wheat straw powder, 22 parts of high-density polyethylene, 30 parts of pre-coated hollow polyester fiber, 15 parts of basalt fiber, 20 parts of porous silicon carbide ceramic nano powder, 2.5 parts of nano cellulose, 2 parts of stearic acid, 5 parts of heavy calcium carbonate, 3 parts of light calcium carbonate, 30 parts of sesbania gum, 3 parts of polyvinyl alcohol/starch adhesive, 6 parts of nano titanium dioxide and 5 parts of EBS diffusion powder.
3. The high strength polyester fiber sound-absorbing sheet according to claim 1, comprising the following components in parts by weight:
140 parts of wheat straw powder, 30 parts of high-density polyethylene, 40 parts of pre-coated hollow polyester fiber, 12 parts of basalt fiber, 24 parts of porous silicon carbide ceramic nano powder, 5 parts of nano cellulose, 2 parts of stearic acid, 5 parts of heavy calcium carbonate, 2 parts of light calcium carbonate, 30 parts of sesbania gum, 4 parts of polyvinyl alcohol/starch adhesive, 8 parts of nano titanium dioxide and 4 parts of EBS diffusion powder.
4. The high-strength polyester fiber sound-absorbing panel according to claim 1, wherein the pre-coated hollow polyester fiber is prepared by forming a nano-silica coating layer on the surface of the modified hollow polyester fiber by a hydrothermal method.
5. The high strength polyester fiber sound-absorbing sheet according to claim 4, wherein the pre-coated hollow polyester fiber is prepared by the following method:
(1) adding a silane coupling agent into deionized water, adjusting the pH value to 2, heating to 30-35 ℃, adding hollow polyester fibers with the length of 5-10mm, mechanically stirring for 6-10h, filtering, washing with water to be neutral, and drying;
(2) adding sodium dodecyl sulfate into deionized water, stirring, dissolving, adding the modified hollow polyester fiber, performing ultrasonic oscillation for 10-15min, adding water glass, dropwise adding a sulfuric acid solution at a stirring speed of 20-30r/min, and standing to obtain gel;
(3) transferring the gel into a high-pressure kettle, heating to 130-150 ℃, reacting for 15-20h, cooling, taking out, washing with water until the gel does not contain sulfate ions, drying at 90-100 ℃, and screening to obtain the pre-coated hollow polyester fiber.
6. The high strength polyester fiber sound-absorbing sheet according to claim 5, wherein the sulfuric acid solution has a mass concentration of 5 to 8%.
7. The high strength polyester fiber sound-absorbing panel according to claim 1, wherein the polyvinyl alcohol/starch adhesive is prepared by the following method:
heating the polyvinyl alcohol solution to 80-90 ℃, stirring and dissolving, cooling to 40-50 ℃, adding potassium persulfate, stirring and reacting for 30-50min, adding the pregelatinized starch, continuously stirring and reacting for 1-3h, adding boric acid, reacting for 20-30min, and cooling.
8. The high strength polyester fiber sound-absorbing sheet according to claim 7, wherein the polyvinyl alcohol solution has a mass concentration of 20 to 25%.
9. The sound-absorbing polyester fiber board as claimed in claim 7, wherein the weight ratio of polyvinyl alcohol solution, pregelatinized starch, boric acid is 150-: 20-30: 1-5.
10. The method for producing a high-strength polyester fiber sound-absorbing panel according to any one of claims 1 to 9, wherein the method comprises the following steps:
adding wheat straw powder, porous silicon carbide ceramic nano powder, heavy calcium carbonate, light calcium carbonate and nano titanium dioxide into a ball mill, and ball-milling for 30-40min to obtain a mixed material, wherein the ball-material ratio is 5: 1, adding the mixed material, high-density polyethylene, pre-coated hollow polyester fiber, basalt fiber, nano-cellulose, stearic acid and EBS diffusion powder into a high-speed mixer, uniformly mixing, adding into an extruder for crosslinking, extruding to obtain master batches, mixing the master batches with sesbania gum and polyvinyl alcohol/starch adhesive, adding into a mold, and carrying out hot-press molding at the temperature of 110 ℃ and 10-15MPa and cooling.
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