KR102273281B1 - Building material comprising paper mulberry cotton - Google Patents

Abstract

The present invention has elasticity and soundproofing effect, including mulberry cotton, and has a relatively increased flame retardant (flame retardant) effect. It relates to a building material such as a finishing material, an exterior material, an interior material, and a manufacturing method thereof.
In the present invention, an ethylvinyl acetate mixture is prepared by mixing ethylvinylacetate and water, and the mixing ratio (v/v) of ethylvinylacetate and water is 3:7 to 3:10, ethyl vinyl Acetate mixture preparation step; A mixing step of ethylvinyl acetate mixture and daksom, in which the ethylvinylacetate mixture prepared in the preparation step of the ethylvinylacetate mixture is added to and mixed with mulberry cotton; A mineral powder addition step of adding and mixing mineral powder to the mixture of ethyl vinyl acetate mixture and daksom prepared in the mixing step of the ethyl vinyl acetate mixture and daksom; and a molding step of dehydrating the mixture of ethyl vinyl acetate prepared in the mineral powder adding step, daksom, and mineral powder with a filter press at 100 to 150° C. to produce a molded article.

Description

Building material comprising paper mulberry cotton

The present invention relates to a construction material including mulberry cotton (hereinafter referred to as mulberry cotton), which has a soundproofing (sound absorption) effect, and is harmless to the human body, such as a finishing material, an exterior material, an interior material, and a manufacturing method thereof.

Architectural finishing materials are surface materials used for interior and exterior of buildings, and are materials used for floors, walls, and ceilings.

Interior materials are materials that serve as both finishing and decoration for the inner surface of the structure constituting the space of a building. In many cases, plate-shaped materials are the main components to form the surface. It is a building material that must meet the required performance.

Exterior materials refer to materials used to finish the exterior of a building.

Recently, a lot of problems due to inter-floor noise are occurring, and in order to solve the noise problem, a soundproofing material, a sound-absorbing panel, etc. are used. The sound-absorbing panel is expensive and there are many things harmful to the human body.

In general, the sound absorbing material refers to a material with a high sound absorption rate and is used for noise prevention. In general, materials with a soft and complex surface or porous materials are suitable as sound-absorbing materials. The frequency must be taken into consideration because low-frequency sounds have a large sound absorption rate, and high-frequency sounds have small sound absorption coefficients, but vice versa. As sound-absorbing materials, ① mineral fibers such as glass wool and rock wool, animal fibers such as felt using porosity, ② thin veneer plates, glass plates, etc. that absorb sound as they vibrate and absorb sound as they vibrate. There are hard fiberboards, etc., and ③ to absorb sound by causing resonance. Each of these materials has sound absorbing properties, and when these materials are properly combined, the sound absorbing properties are further increased.

Also, sick house syndrome is a common symptom experienced by people who enter a newly built house for the first time. Sick house syndrome is caused by building materials that contain a lot of chemicals. The building materials in question include not only building exterior materials such as concrete and cement, which are basic structures in building buildings, but also interior materials such as wallpaper, ceiling materials, and flooring materials, as well as adhesives used in the process of attaching exterior materials and interior materials. As a result, almost all types of building materials are a problem.

For the present invention, some of the present inventors and applicants have applied for Korean Patent Application No. 10-2017-0072215 "Maknae cotton manufacturing system".

As a prior art, Korean Patent Registration No. 10-1340280 relates to a building interior material containing a mulberry component, which is prepared by mixing calcined loess powder and kaolin powder with pulverized mulberry bast fiber in a predetermined weight ratio to make a composition, After mixing and pulverizing the composition and water in a kneader, the contents filtered through a mesh screen are dehydrated with a filter press to produce a molded article. Then, the molded article is unglazed or chaebol-grilled to obtain a molded article having strong strength and light weight. However, in Korean Patent Registration No. 10-1340280, the elasticity is remarkably reduced, the specific gravity of using mulberry bast fiber is small, and furthermore, because the mulberry bast fiber is crushed and used, and unglazed and chaebol-roasted, a soundproofing effect is expected. hard to do

As another prior art, Korean Patent Registration No. 10-0975568 relates to a method for manufacturing a building surface finishing material mixed with ocher and mulberry pulp, and in detail, calcined loess powder, mulberry pulp and indigo leaf powder made from mulberry bark. It relates to a method for manufacturing a surface finishing material for a building, which is mixed in a certain ratio and mixed with glutinous rice paste and agar agar grass in a certain ratio to form a mortar shape. However, Korean Patent Registration No. 10-0975568 is made in the form of mortar and contains a small amount of mulberry pulp compared to loess powder, so it is difficult to expect a soundproofing effect.

Domestic Registered Patent No. 10-1340280 Domestic Registered Patent No. 10-0975568

An object to be solved by the present invention is to provide a finishing material, an exterior material, an interior material, and a manufacturing method thereof, which have elasticity and have a soundproofing effect, and include mulberry cotton.

Another problem to be solved by the present invention is a relatively increased flame retardant (flame retardant) effect. To provide a finishing material, an exterior material, an interior material, and a manufacturing method thereof including mulberry cotton.

In order to solve the above problems, an embodiment of the method for manufacturing a building material comprising mulberry cotton of the present invention is to prepare an ethylvinyl acetate mixture by mixing ethylvinylacetate and water, but ethylvinylacetate ) and the mixing ratio of water (v/v) is 3:7 to 3:10, ethyl vinyl acetate mixture preparation step; A mixing step of ethylvinyl acetate mixture and daksom, in which the ethylvinylacetate mixture prepared in the preparation step of the ethylvinylacetate mixture is added to and mixed with dak cotton (mulberry cotton); Mineral powder adding step of adding and mixing mineral powder to the mixture of ethyl vinyl acetate mixture and daksom prepared in the mixing step of ethyl vinyl acetate mixture and daksom; and a molding step of dehydrating the mixture of ethyl vinyl acetate, daksom, and mineral powder prepared in the mineral powder adding step with a filter press at 100 to 150° C. to produce a molded article.

Another embodiment of the method for manufacturing a building material containing mulberry cotton of the present invention is an ethylvinyl acetate mixture preparation step of preparing an ethylvinyl acetate mixture by mixing ethylvinylacetate and water; A mixing step of ethylvinyl acetate mixture and daksom, in which the ethylvinylacetate mixture prepared in the preparation step of the ethylvinylacetate mixture is added to and mixed with dak cotton (mulberry cotton); and a molding step of dehydrating the mixture of ethylvinyl acetate mixture and daksom prepared in the mixing step of the ethylvinyl acetate mixture and daksom with a filter press at 100 to 150° C. to produce a molded article.

In the step of mixing the ethylvinyl acetate mixture and the daxom, the mixing ratio (w/w) of the daxom and the ethylvinylacetate mixture is 1:3. Alternatively, in the mixing step of the mixture of ethyl vinyl acetate and daksom, 3 liters of ethyl vinyl acetate mixture are mixed with respect to 1 kg of daksom.

The mineral powder consists of one or more powders of elvan, germanium, mica, jade, enerite, and amethyst.

In the mineral powder addition step, the mixing ratio (w/w) of the mulberry cotton and the mineral powder is 10:1~2. Alternatively, the mixing ratio (w/w) of the mixture of the ethylvinyl acetate mixture and Daksom and the mineral powder is 40:1.

In the mixing step of the ethylvinyl acetate mixture and the mulberry mulberry, the mulberry fibrous body preparation step of cutting the mulberry white skin to a predetermined size, dividing the fibrous body (fiber) of the cut mulberry mulberry bark, and drying; A first thinning step of stretching the mulberry fibers dried in the mulberry fibrous body preparation step with a roller, shredding the spread mulberry mulberry fibers, and removing foreign substances while spreading the chopped mulberry fibers; A second thin cutting step of turning over the top (surface) and bottom (bottom) of the mulberry fibers that have undergone the first thinning step, cutting them, and removing foreign substances while spreading the chopped mulberry fibers; A third thinning step of slicing the mulberry fibers that have undergone the second thinning step, and removing foreign substances while spreading the chopped mulberry fibers; A fourth thinning step of turning over the top (surface) and bottom (bottom) of the mulberry fibers that have undergone the third thinning step, cutting them, and spreading the chopped mulberry fibers; a fifth shredding step of shredding the mulberry fibers that have passed through the fourth shredding step, and storing the chopped mulberry fibrous bodies as mulberry in a mulberry storage unit; manufactured, including

A finishing material for construction, or an exterior material for construction, or an interior material for construction made of the method for manufacturing a construction material containing the mulberry cotton of the present invention is characterized.

In addition, the building material comprising the mulberry cotton of the present invention is characterized in that it contains mulberry cotton, ethylvinylacetate and mineral powder.

The mixing ratio (v/v) of ethylvinylacetate and water is 3:7 to 3:10, the mixing ratio (w/w) of mulberry cotton and mineral powder is 10:1 to 2, and the mineral powder is elvan It is at least one selected from the group consisting of powder, germanium powder, mica powder, jade powder, enerite powder, and amethyst powder.

The finishing material, exterior material, and interior material including mulberry cotton, manufactured by the manufacturing method of the present invention, have elasticity and have a soundproofing effect.

In addition, the finishing materials, exterior materials, and interior materials containing mulberry cotton, which are vulnerable to flame retardation, have a relatively increased flame retardant (flame retardant) effect.

In addition, the building material according to the present invention does not emit environmental pollutants by using an eco-friendly material, and at the same time has a soundproofing effect, is light, relatively flexible, has elasticity, and has relatively improved flame retardant and flame retardant effects.

1 is a test result of the sound absorption coefficient according to the frequency of the ceiling finish material containing mulberry fibers.
FIG. 2 shows the test body used in the test of FIG. 1 and the installation of the test body.
3 is a test result of sound transmission loss according to the frequency of the ceiling finishing material containing mulberry fibers.

Hereinafter, the present invention will be described in more detail through examples. However, the following examples are only illustrative of the present invention, and the scope of the present invention is not limited to the following examples.

<Manufacturing of raw materials for building materials>

The manufacturing method of mulberry wool, which is used as a raw material for construction materials such as finishing materials, exterior materials, and interior materials, will be explained.

In the cutting step, the mulberry bark is cut to a predetermined size by a rotary cutter, and the fibers (fibers) that are bundled together in the mulberry tree are separated (divided). That is, the mulberry bark is cut to a predetermined size by a rotary cutter and cut while moistening, and the cut mulberry bark is passed between two pressing rollers to divide the fibers (fibers) of the mulberry bark.

In the drying step, the cut and separated mulberry fibers are dried.

In the first shredding step, the dried mulberry fibers are spread by a roller (ie, a dispersion roller), and the spread mulberry fibers are minced. That is, in the first fine-cut portion consisting of the first fine-cut rotary drum and a plurality of fine-cut rollers disposed on the outer periphery of the first fine-cut rotary drum, a space between the first fine-cut rotary drum and the plurality of fine-shredding rollers, mulberry fiber By passing the sieves through, the mulberry fibers are minced.

In the spreading and first foreign material removal steps, foreign materials are removed while spreading the first chopped mulberry fibers. That is, by passing the first chopped mulberry fibers raised on the conveyor under the meshed first foreign material collecting drum (ie, between the conveyor and the first foreign material collecting drum), Foreign substances such as debris are collected in the foreign substance collecting drum.

In the second shredding step, the upper surface (surface) and the bottom surface (bottom) of the first chopped mulberry fibrous body from which foreign substances have been removed are turned over and cut into pieces. That is, the flipping roller is located between the feeding roller and the second rotating drum, and rotates in the opposite direction to the first rotating drum, and the upper surface (surface) and The bottom (bottom) is turned over and transferred to the second fine-cut rotary drum 321 . In the second fine cutting section comprising the second fine cutting rotary drum and a plurality of thinning rollers disposed on the outer periphery of the second thinning rotating drum, between the rotating, second thinning rotating drum and the plurality of thinning rollers, mulberry fibers are By passing through, the mulberry fibers are minced.

In the unfolding and second foreign material removal steps, foreign materials are removed while spreading the second chopped mulberry fibers. That is, by passing the second chopped mulberry fibers raised on the conveyor under the meshed second foreign material collecting drum (ie, between the conveyor and the second foreign material collecting drum), Foreign substances such as debris are collected in the foreign substance collecting drum.

In the third shredding step, the second shredded mulberry fibrous body from which foreign substances have been removed is shredded. That is, in the third fine-cut portion consisting of the third-thick rotating drum and a plurality of thin-cut rollers disposed on the outer periphery of the third thin-cut rotating drum, a space between the rotating, third thin-cut rotating drum and the plurality of thinning rollers, mulberry fiber By passing the sieves through, the mulberry fibers are minced.

In the step of spreading and removing the third foreign material, the foreign material is removed while spreading the third chopped mulberry fibers. That is, by passing the third chopped mulberry fibers raised on the conveyor under the meshed third foreign material collecting drum (ie, between the conveyor and the third foreign material collecting drum), Foreign substances such as debris are collected in the foreign substance collecting drum.

In the fourth shredding step, the top (surface) and bottom (bottom) of the third shredded mulberry fibrous body from which foreign substances have been removed are turned over and cut into pieces. That is, the flipping roller is located between the feeding roller and the fourth fine-cut rotating drum, and rotates in the opposite direction to the third fine-cut rotating drum, so that the upper surface (surface) and Turn over the bottom (bottom) and transfer it to the 4th sub-section rotating drum. In the second fine-cut section comprising the fourth-thick rotary drum and a plurality of chopping rollers disposed on the outer periphery of the fourth-thick rotary drum, between the rotating, fourth-thick rotary drum and the plurality of chopping rollers, mulberry fibers are By passing through, the mulberry fibers are minced.

In the spreading step, the fourth chopped mulberry fibers are spread by a roller (dispersion roller). That is, the mulberry fibrous body discharged through the fourth section rotating drum is placed on the conveyor, and the mulberry fibrous body placed on the conveyor is spread by the dispersion roller.

In the fifth shredding step, the unfolded fourth shredded mulberry fibers are minced. That is, in the fifth thin section consisting of the fifth thin rotating drum and a plurality of thinning rollers disposed on the outer periphery of the fifth thinning rotating drum, between the rotating, fifth thin rotating drum and the plurality of thinning rollers, mulberry wood By allowing the fibers to pass through, the mulberry fibers are minced.

The fifth shredded mulberry fibers are daksom and are stored in the daksom storage unit.

As used in the present invention, the term “mulberry cotton” is a wool-shaped white fiber made from paper mulberry, also called low-phase, and is a cotton produced using mulberry as a main raw material.

<Production of building materials>

The manufacturing method of building materials such as finishing materials, exterior materials, and interior materials is basically the same, and may vary depending on the purpose of use and the molding frame.

The manufacturing method of the building material is as follows.

As a first step, a step of preparing an ethylvinyl acetate mixture by mixing ethylvinylacetate (EVA) and water, wherein the mixing ratio (v/v) of ethylvinylacetate and water is 3:5 to 3:20 may be, but is not limited thereto, and may be a mixing ratio in a general range capable of manufacturing the building material of the present invention. Specifically, the mixing ratio may be 3:7 to 3:10. Preferably, the mixing ratio may be 3:7.

In the second step, adding the ethylvinyl acetate mixture prepared in the first step to daksom (mulberry cotton), so that the mixing ratio (w/w) of daksom and ethylvinylacetate mixture is 1:3, After adding the ethyl vinyl acetate mixture, stir at an appropriate speed to mix. Specifically, the mixture is added at a ratio of 3 liters of ethyl vinyl acetate mixture to 1 kg of daksom. Considering that 1 liter of the ethyl vinyl acetate mixture weighs about 0.9 kg, the mixing ratio (w/w) of the Daksom and the ethyl vinyl acetate mixture may be 1:3.

In the third step, a step of adding mineral powder to the mixture of mulberry cotton to which the ethylvinyl acetate mixture prepared in the second step is added (that is, the mulberry mixture in the second step), and Mineral powder is added to the mixture of the second step so that the mixing ratio (w/w) of the mineral powder is 40:1~4, and then mixed by stirring at an appropriate speed. Preferably, the mixing ratio (w/w) of the mulberry cotton and the mineral powder is 10:1 to 2, and therefore, the mixing ratio (w/w) of the mulberry cotton mixture and the mineral powder in the second step may be 40:1 . Here, as the mineral powder, elvan, germanium, mica, jade, enerite, loess, amethyst, etc. powder may be used, but is not limited thereto. In some cases, the third step may be omitted.

The total sum of the total weight of mulberry cotton and mineral powder used in performing the second and third steps is 1.5 (kg/L, w/v) or less, specifically 1.2 (kg/v) compared to the total volume of ethylvinyl acetate L, w/v) or less.

In the fourth step, a step of molding mulberry cotton to which the mineral powder and ethylvinyl acetate mixture prepared in the third step are added (that is, the daksom mixture in the third step), wherein the daksom mixture in the third step is 100 to 150 Dehydrated with a filter press under the condition of ℃ to produce a molded article.

The compression time for performing the fourth step, the forming step, may vary depending on the thickness of the building material manufactured according to the present invention. When the thickness of the building material is 1 to 2 cm, it can be performed within 10 minutes, and the greater the thickness, the longer the compression time.

As used herein, the term “ethylvinylacetate” is a copolymer of ethylene and vinylacetate, and in general, a copolymer in which vinyl acetate is optionally polymerized on the backbone of polyethylene. refers to The ethyl vinyl acetate is harmless to the human body and exhibits elasticity and adhesive properties.

The building material of the present invention can achieve an excellent effect of elasticity by including ethyl vinyl acetate. Specifically, when epoxy or silicone is used instead of ethylvinyl acetate, it is impossible to manufacture the building material as in the present invention, so it cannot be used, and when using glue, the production of the building material itself is possible, but elasticity There is a downside to this lack.

<Test 1>

KS F 2814: 2002 (Sound Absorption Coefficient and Impedance Determination Method by Impedance Pipe-Part 2: Transfer Function Method) The sound absorption coefficient for normal incident sound was measured according to the test method of At this time, the test was conducted using three specimens (diameter 100mm X thickness 16mm) for medium and low frequency measurement and three specimens for high frequency measurement (diameter 30mm X thickness 16mm).

1 is a test result of the sound absorption coefficient according to the frequency of the ceiling finishing material containing mulberry fiber, and FIG. 2 shows the test specimen used in the test of FIG. 1 and the installation of the specimen. Figure 2 (a) is a test specimen measured during the test of Figure 1, Figure 2 (b) is a state in which the test body of Figure 2 (a) is mounted on an impedance tube.

As shown in FIG. 1 , it can be seen that the ceiling finishing material including daksom has a sound-absorbing function. It can be seen that it is excellent in reducing noise from 1200Hz to 2000Hz, especially noise from 1600Hz.

<Test 2>

The product of the ceiling finishing material including the cotton wool manufactured by the above manufacturing method was tested by the Korea Institute of Construction and Living Environment, ASTM E2611-09 (Standard Test Method for Measurement of Normal Incidence Sound Transmission of Acoustical Materials Based on the Transsfer Matrix method) The sound transmission loss for normal incident sound was measured according to the test method of , and the measurement frequency band is the center frequency of 1/3 octave band, and it is 100Hz ~ 5000Hz. At this time, the test was conducted using three specimens (diameter 100mm X thickness 16mm) for medium and low frequency measurement and three specimens for high frequency measurement (diameter 30mm X thickness 16mm).

3 is a test result of sound transmission loss according to the frequency of the ceiling finish material containing mulberry fibers.

As a result of testing the sound transmission loss (acoustic transmittance) indicating the sound insulation performance, it can be seen that there is a sound insulation effect as shown in FIG. 3 .

In this specification, the detailed description of the contents that can be sufficiently recognized and inferred by those of ordinary skill in the art of the present invention is omitted, and the technical spirit or essential configuration of the present invention other than the specific examples described in the present specification is changed More various modifications are possible within the scope not to do so. Therefore, the present invention may be practiced in a manner different from that specifically described and exemplified herein, which will be understood by those of ordinary skill in the art of the present invention.

Claims (15)

Prepare an ethylvinyl acetate mixture by mixing ethylvinylacetate and water, but the mixing ratio (v/v) of ethylvinylacetate and water is 3:7 to 3:10, ethylvinylacetate mixture preparation step ;
A mixing step of ethylvinyl acetate mixture and daksom, in which the ethylvinylacetate mixture prepared in the preparation step of the ethylvinylacetate mixture is added to and mixed with mulberry cotton;
A mineral powder addition step of adding and mixing mineral powder to the mixture of ethyl vinyl acetate mixture and daksom prepared in the mixing step of the ethyl vinyl acetate mixture and daksom;
A molding step of producing a molded article by dehydrating the mixture of ethyl vinyl acetate, daksom, and mineral powder prepared in the mineral powder adding step with a filter press at 100 to 150° C.;
A method of manufacturing a building material comprising mulberry cotton, comprising a. Preparing an ethylvinyl acetate mixture by mixing ethylvinylacetate and water to prepare an ethylvinylacetate mixture;
A mixing step of ethylvinyl acetate mixture and daksom, in which the ethylvinylacetate mixture prepared in the ethylvinylacetate mixture preparation step is added to and mixed with mulberry cotton;
A molding step of dehydrating the mixture of the ethylvinyl acetate mixture and daksom prepared in the mixing step of the ethylvinyl acetate mixture and daksom with a filter press at 100 to 150° C. to produce a molded article;
A method of manufacturing a building material comprising mulberry cotton, comprising a. 3. The method of any one of claims 1 or 2,
In the mixing step of the ethyl vinyl acetate mixture and the daksom, the mixing ratio (w/w) of the daksom and the ethylvinyl acetate mixture is 1:3, A method for producing a building material containing mulberry cotton. 3. The method of any one of claims 1 or 2,
A method for producing a building material comprising mulberry cotton, characterized in that in the mixing step of the ethylvinyl acetate mixture and the daksom, 3 liters of the ethylvinylacetate mixture is mixed with respect to 1kg of the daksom. According to claim 1,
Mineral powder, elvan, germanium, mica, jade, enerite, characterized in that consisting of one or more of the powder of amethyst, a method of manufacturing a building material comprising mulberry cotton. 6. The method of claim 5,
In the step of adding the mineral powder, the mixing ratio (w/w) of the mulberry cotton and the mineral powder is 10:1 to 2, A method of manufacturing a building material containing mulberry cotton. 6. The method of claim 5,
A method for manufacturing a building material containing mulberry cotton, characterized in that the mixture of the mixture of ethyl vinyl acetate and mulberry, and the mineral powder have a mixing ratio (w/w) of 40:1. 3. The method of any one of claims 1 or 2,
Daksom in the mixing step of the ethyl vinyl acetate mixture and Daksom,
A mulberry fibrous body preparation step of cutting the mulberry bark to a predetermined size, dividing the fibrous body (fiber) of the cut mulberry bark, and drying;
A first thinning step of spreading the dried mulberry fibers by a roller in the mulberry fibrous body preparation step, shredding the spread mulberry fibers, and removing foreign substances while spreading the chopped mulberry fibers;
A second thin cutting step of turning over the top (surface) and bottom (bottom) of the mulberry fibers that have undergone the first thinning step, cutting them, and removing foreign substances while spreading the chopped mulberry fibers;
a third thinning step of slicing the mulberry fibers that have undergone the second thinning step, and removing foreign substances while spreading the chopped mulberry fibers;
A fourth thinning step of turning over the top (surface) and bottom (bottom) of the mulberry fibers that have undergone the third thinning step, cutting them, and spreading the chopped mulberry fibers;
a fifth thinning step, in which the mulberry fibers that have undergone the fourth thinning step are minced, and the chopped mulberry fibers are stored in a mulberry storage unit as daksom;
A method of manufacturing a building material comprising mulberry cotton, characterized in that it is manufactured including a. delete delete delete delete delete delete delete

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