KR101225617B1 - Pla vegetation mat - Google Patents

Abstract

PURPOSE: A manufacturing method of a polylactic acid vegetation mat using a biodegradable composite material with polylactic acid is provided to enhance the supporting force of a vegetation ground by suppressing the loss of biodegraded particles. CONSTITUTION: A manufacturing method of a polylactic acid vegetation using a biodegradable composite material comprises: a step of primary compounding 0.5-2 weight% of a biodegradable resin, and 98-99.5 weight% of a resin selected from PBS, PBSA and PBA resin; a step of secondary compounding 90-95 weight% of a polylactic acid resin, and 4-8 weight% of a resin selected from PBS, PBSA and PBA resin, and 4-8 weight% of the primary compounded nanocomposite resin; a step of manufacturing a biodegradable composite fiber by extruding and elongating the biodegradable composite resin; a step of soaking broken stones into a plant-nutrient solution for 30-40 minutes and drying the same; and a step of mixing 40-55 weight% of a biodegradable composite short fiber, 20-30 weight% of natural fiber and 25-30 weight% of the dried broken stone to manufacture a biodegradable composite material. [Reference numerals] (AA) Manufacturing a nanocomposite resin; (BB) Primarily compounding; (CC) Secondarily compounding; (DD) Manufacturing biodegradably composite short fibers; (EE) Introducing fine aggregate; (FF) Mixing; (GG) Introducing natural fibers; (HH) Introducing nutrient supplements; (II) Pressure molding; (JJ) Drawing after cooling and stabilization

Description

Manufacturing method of river block type reinforced vegetation mat using biodegradable composite material containing polylactic acid {PLA vegetation mat}

The present invention relates to a river block-type reinforced vegetation mat using a biodegradable composite material containing a polylactic acid, and more particularly, a composition constituting the block-type reinforced vegetation mat with polylactic acid as the main shaft. By mixing and constructing the fine aggregates of heavy weight for the stability of installation of block-type reinforced vegetation mat with natural fiber, it provides the nutrients necessary for plant growth during biodegradation process while performing the function of safe protection structure for root rooting time of vegetation. The present invention relates to a method for producing a stream-block-reinforced vegetation mat using biodegradable composite materials containing polylactic acid, which can contribute to strengthening the root lubrication of the plant.

The general vegetation block provides the ability to protect the disasters from natural disasters such as floods by regularly stacking or connecting concrete structures of the size that secure the space for vegetation, and to visually complement the erosion of concrete structures through vegetation plants. Of course, it is installed for the purpose of providing a more eco-friendly environment.

However, concrete, which is a material of vegetation block, has a limit that is not environmentally friendly and visually unfriendly because it causes water pollution because pollutants including strong alkaline materials are continuously eluted.

Of course, since the concrete structure itself is durable, the durability of the construction structure has a long advantage, but in fact, since the plant itself prevents the loss of soil after the roots of the plant are rooted, it becomes an unnecessary structure from this time.

Nowadays, block type reinforced vegetation mats are made of biodegradable resins to solve the shortcomings of environmentally unfriendly concrete structures.They keep their shape stable while roots stick, and then biodegrade and disappear after roots stick. Biodegradable block-type reinforced vegetation mats are being released to achieve practically environmentally friendly goals.

However, the biodegradable block-type reinforced vegetation mat has a natural-friendly advantage of performing the function of the block-type reinforced vegetation mat only for a certain period of time and causing biodegradation, but does not cause environmental pollution. There is a downside to falling.

In addition, when the biodegradable block-type reinforced vegetation mat is biodegraded, it becomes a particulate state and the loss phenomenon due to weathering is accelerated, so that the phenomenon of cavitation occurs at the position where the block-type reinforced vegetation mat is located, which tends to weaken the bearing capacity of the vegetation ground.

In addition, since the main material of the biodegradable block-type reinforced vegetation mat is expensive polylactic acid (PLA), the manufacturing cost is very expensive.

The present invention has been made to solve the above conventional problems, the object of which is,

The composition constituting the block-type reinforced vegetation mat is made of polylactic acid as the main axis, and natural aggregates such as jute and hemp are added together with fine aggregates such as sand or stone powder to secure weight for the installation stability of the block-type reinforced vegetation mat. In addition, even if natural fiber including polylactic acid constituting the block-type reinforcement vegetation mat is in the state of microparticles by biodegradation, the coarse sand or rubble rubble suppresses the loss of biodegraded fine particles, thereby strengthening the bearing capacity of the vegetation ground.

Another object of the present invention is to include a large amount of components of the biodegradable block-type reinforced vegetation mat, such as sand, rubble, stone powder, etc. in a range without affecting the function of the block-type reinforced vegetation mat, thereby making expensive polylactic acid the main material. It is to reduce manufacturing costs by minimizing the proportion of PLA.

Still another object of the present invention is to mix fine aggregates such as sand, rubble and stone powder among constituents of the biodegradable block-type reinforced vegetation mat with nutrients necessary for plant growth or to immerse in a dissolved solution and then dry them. By constructing a block-type reinforcement vegetation mat to allow the vegetation plants to absorb it to help the growth of the plant.

Stream block type reinforced vegetation mat manufacturing method using a biodegradable composite material comprising a polylactic acid of the present invention for achieving the above object,

 10 to 15 wt% of palm oil in natural oil, 17 to 20 wt% of PLA content, and 65 to 73 wt% of mica are prepared.

0.5 wt% to 2 wt% of the biodegradable nanocomposite resin prepared and 98 wt% to 99.5 wt% of the selected resin among PBS, PBSA and PBA resins were first compounded for dispersion and diffusion,

Secondary compounding 90% to 95% by weight of PLA resin, 4% to 8% by weight of the optional resin of PBS, PBSA, PBA resin and 1% to 2% by weight of the first compounded biodegradable nanocomposite resin,

Manufacturing the biodegradable composite short fibers by extrusion stretching the secondary compounded biodegradable composite resin by setting the first screw at 200 ° C. to a die temperature of 220 ° C .;

Immersing rubble in a dissolved solution of plant nutrients for 30 to 40 minutes and then drying;

Preparing a biodegradable composite material by mixing 40 to 55 wt% of the biodegradable composite short fibers, 20 to 30 wt% of natural fibers, and 25 to 30 wt% of the dried rubble;

After filling the biodegradable composite material in the block-type reinforced vegetation mat press mold heated to 180 ℃ ~ 200 ℃ pressurized for 3 to 4 minutes by a press and then cooled and taken out.

The present invention provides a method for producing a stream block-type reinforced vegetation mat using a biodegradable composite material containing polylactic acid,

The composition of the block-type reinforced vegetation mat is added to the biodegradable composite short fibers including polylactic acid and fine aggregates such as sand or stone powder having a large specific gravity and large particles to natural fibers such as jute and hemp. It has the advantage of ensuring the weight for the installation stability of the particles and at the same time the biodegradation of fine particles of coarse sand or stone rubble even if the natural fiber including polylactic acid constituting the block-type reinforced vegetation mat is biodegradable By suppressing the loss of them there is an advantage of preventing the loss phenomenon due to weathering and improving the bearing capacity of vegetation ground.

In addition, the present invention, nutrients, such as nitrogen, phosphoric acid, potassium or root rooting nutrients necessary for plant growth of fine aggregates such as sand, rubble and stone powder among the components constituting the biodegradable block-type reinforced vegetation mat Therefore, the vegetated plants can be absorbed not only in the vegetation soil but also in the block-type reinforced vegetation mat, which has the advantage of greatly helping plant growth. In particular, as the plant grows rapidly, the time required for firm rooting of roots can be reduced to a minimum, thereby reducing the loss of vegetation soil to a minimum.

Minimize the ratio of expensive polylactic acid (PLA), which is the main material, by including a large amount of fine aggregates such as sand, rubble, and stone without affecting the function of the block-type reinforced vegetation mat. There is an advantage to reduce the manufacturing cost.

1 is a process block diagram of a stream block-type reinforced vegetation mat using a biodegradable composite material containing a polylactic acid of the present invention.

The stream-block-reinforced vegetation mat using the biodegradable composite material containing the polylactic acid of the present invention includes biodegradable composite short fibers made of a biodegradable composite material, natural fibers and fine aggregates.

Biodegradable composite short fiber is the main material of the block-type reinforced vegetation mat to perform the function of maintaining the shape of the block-type reinforced vegetation mat for a long time. Looking at the manufacturing method, in one step, the content of palm oil in natural oil 10 wt% to 15 wt% of PLA, 17 wt% to 20 wt% of nanocomposite, 65 wt% to 73 wt% of nano mica is prepared,

In the second step, primary compounding for dispersing and diffusing 0.5 wt% to 2 wt% of the prepared biodegradable nanocomposite resin and 98 wt% to 99.5 wt% of the selected resin among PBS, PBSA and PBA resins,

In three steps, 90 wt% to 95 wt% of PLA resin, 4 wt% to 8 wt% of the selected resin among PBS, PBSA, and PBA resin, and 1 wt% to 2 wt% of the first compounded biodegradable nanocomposite resin I've found some tea

The second compounded biodegradable composite resin in the fourth step is extrusion stretched by setting the first screw 200 ℃ to die temperature 220 ℃ to produce a biodegradable composite short fibers.

Natural fiber performs a function of improving mechanical properties such as impact strength, and may be used by using materials such as jute, hemp, sheep, ramie, coconut fiber, rice straw, or by selectively mixing two or more materials. .

In addition, fine aggregates, including the purpose of securing the weight for the stability of the installation of the block-type reinforced vegetation mat, and the ability to suppress the loss phenomenon during the biodegradation process of the biodegradable composite resin, including the input of expensive biodegradable composite short fibers By minimizing and forming a strong block-type reinforced vegetation mat, it cuts sand, masato, or other materials such as crushed stone and stone powder obtained by crushing stone or gravel into small particles. The particle size of the fine aggregate is suitable to about 0.5 ~ 1mm, but the size of the particles can be selected differently depending on the material does not necessarily need to be limited numerically.

Looking at the process of manufacturing block type reinforced vegetation mat using these components,

First, the step of preparing a biodegradable composite material by mixing the biodegradable composite short fibers 40 to 55% by weight, 20 to 30% by weight natural fibers and 25 to 30% by weight of the dried rubble.

When the amount of biodegradable composite short fibers is less than 40%, the formed block-type reinforced vegetation mat easily collapses, and because of the large gaps between fine aggregates, the rate of biodegradation is too fast. It is suitable to inject into. In addition, when the input amount is more than 55% by weight, moldability and robustness are greatly improved, and biodegradation time is increased. However, this exceeds the firmness and biodegradation time necessary for performing the function of the biodegradable block type reinforced vegetation mat. However, the biodegradable block-type reinforced vegetation mat, which requires about 3 years of biodegradation time, was found to be less than 55% by weight.

The mixture of these components is introduced into a press mold and heated to a high temperature while applying a high pressure to form. At this time, it is preferable to maintain the temperature of a press die at 180 degreeC-200 degreeC. That is, if the temperature is not uniformly transmitted due to factors such as the nonuniformity of the temperature of the input biodegradable composite short fibers, natural fibers and fine aggregates and the thickness of the block-type reinforced vegetation mat formed, the biodegradation The melt state of the adult composite short fibers may be uneven, which may lead to product defects. Therefore, after filling the biodegradable composite material in the press mold, it is preferable to sufficiently heat the pressurizing time for 3 to 4 minutes.

After pressurizing is completed in this way, the product is completed by cooling again for 2 to 3 minutes, stabilizing, and separating from the mold.

The finished product can be configured in the shape of a triangular, square, hexagonal circle, and the like, there can be configured one or more vegetation space for vegetation inside. That is, the space configuration divides the internal space of the body into partitions to form a plurality of spaces. In addition, the bottom of the body constitutes a floor, and the floor may extend to one side and overlap with the vegetation blocks connected adjacently to support each other. In addition, the installation of the vegetation block can be integrated by connecting each other through the body of the pin made of PLA material.

On the other hand, the block-type reinforced vegetation mat made of the biodegradable composite material of the present invention, the nutrients necessary for the growth of the plant is eluted in the process of biodegradation, so that the plant that absorbs it is well developed, especially deep roots and wide It is spreading to perform the function of improving the bearing capacity of the ground. To do this, you can add nutrients to help the plant grow.

There are two ways to add nutrients, which are supplied in the form of particles such as fertilizers and then molded.The nutrients are dissolved in the liquid phase and the fine aggregates are immersed and dried to dry the nutrients on the surface of the fine aggregates. Or to penetrate the interior voids and later dissolve.

The time for immersing the fine aggregate in nutrients is about 30 minutes to 1 hour is sufficient. This is the time to allow nutrients to fully penetrate the interior voids of the aggregate.

Nutrients to be added include one of basic nutrients such as nitrogen, phosphoric acid and potassium, or a mixture of two or more kinds of nutrients, for example, a compound fertilizer, and root rooting to make roots grow well without rot. It can be composed of nutrients.

Claims (4)

10 to 15 wt% of palm oil in natural oil, 17 to 20 wt% of PLA content, and 65 to 73 wt% of mica are prepared.
0.5 wt% to 2 wt% of the biodegradable nanocomposite resin prepared and 98 wt% to 99.5 wt% of the selected resin among PBS, PBSA and PBA resins were first compounded for dispersion and diffusion,
Secondary compounding 90% to 95% by weight of PLA resin, 4% to 8% by weight of the optional resin of PBS, PBSA, PBA resin and 1% to 2% by weight of the first compounded biodegradable nanocomposite resin,
Manufacturing the biodegradable composite short fibers by extrusion stretching the secondary compounded biodegradable composite resin by setting the first screw at 200 ° C. to a die temperature of 220 ° C .;
Immersing rubble in a dissolved solution of plant nutrients for 30 to 40 minutes and then drying;
Preparing a biodegradable composite material by mixing 40 to 55 wt% of the biodegradable composite short fibers, 20 to 30 wt% of natural fibers, and 25 to 30 wt% of the dried rubble;
Filling the biodegradable composite material in a block-type reinforced vegetation mat press mold heated to 180 ° C. to 200 ° C., pressurizing for 3 to 4 minutes by a press, and then cooling and withdrawing the mold;
Stream block type reinforced vegetation mat manufacturing method using a biodegradable composite material comprising a polylactic acid, characterized in that consisting of. The method of claim 1, wherein the plant nutrient is a composite fertilizer, characterized in that the river block-type reinforced vegetation mat production method using a biodegradable composite material comprising a polylactic acid. The method of claim 1, wherein the phytonutrient is a root block-enriched vegetation mat using a biodegradable composite material comprising a polylactic acid, characterized in that the root root root nutrient. 10 to 15 wt% of palm oil in natural oil, 17 to 20 wt% of PLA content, and 65 to 73 wt% of mica are prepared.
0.5 wt% to 2 wt% of the biodegradable nanocomposite resin prepared and 98 wt% to 99.5 wt% of the selected resin among PBS, PBSA and PBA resins were first compounded for dispersion and diffusion,
Secondary compounding 90% to 95% by weight of PLA resin, 4% to 8% by weight of the optional resin of PBS, PBSA, PBA resin and 1% to 2% by weight of the first compounded biodegradable nanocomposite resin,
Manufacturing the biodegradable composite short fibers by extrusion stretching the secondary compounded biodegradable composite resin by setting the first screw at 200 ° C. to a die temperature of 220 ° C .;
40 to 55% by weight of the biodegradable composite short fibers, 20 to 25% by weight of natural fibers, 20 to 25% by weight of the dried rubble, and 5 to 10 weight of the nutrients selected from the three major nutrients nitrogen, phosphoric acid and potassium Mixing the% to prepare a biodegradable composite material;
Filling the biodegradable composite material in a block-type reinforced vegetation mat press mold heated to 180 ° C. to 200 ° C., followed by press molding for 3 to 4 minutes by a press;
Withdrawing after cooling and stabilizing;
Stream block type reinforced vegetation mat manufacturing method using a biodegradable composite material comprising a stream polylactic acid, characterized in that consisting of.

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