KR100914276B1 - Rope and vegetationbase material coated with composition containing rubber - Google Patents

Abstract

A rope coated with a composition containing a rubber component and plant materials are provided to improve shape stability and durability of the rope and the plant materials by coating the surface of the rope and the plant materials with the rubber component. A composition containing a rubber component includes a rubber mixed with natural rubber and styrene butadiene rubber to weight ratio of 1:1-4:1, a component for a cross-linking process of the rubber component, and a functional additive. A moisturizing aiding agent is the functional additive. The moisturizing aiding agent is a powder shape which is selected among bark, jute, coier, straw, waste wooden etc. The moisturizing aiding agent is added with the weight ratio of ~20 parts by weight based on the rubber component 100 parts by weight.

Description

ROPE AND VEGETATIONBASE MATERIAL COATED WITH COMPOSITION CONTAINING RUBBER}

The present invention relates to ropes and vegetation materials coated with a rubber component-containing composition.

A method to prevent soil loss on the slopes or riversides of road cutouts caused by road construction. Etc. have been used a lot. However, this method has a problem that concrete or synthetic resins are not environmentally friendly due to the recent increase in environmental concern.

Therefore, the development of materials that are harmless to an environmentally friendly environment is made by these social demands, and specifically, such environmentally friendly materials include coir (palm fiber), jute, rice straw, and the like. In addition, various vegetation materials products such as vegetation mats, vegetation nets, vegetation rolls, and bags using natural materials have been produced. However, the vegetation materials made of such natural materials are not very durable in themselves, and when vegetation zones are formed by using vegetation materials and ropes made of such natural materials, they are quickly corroded by external environment such as water and air. There was a problem that the durability is weakened.

In addition, in the case of vegetation mats used as a raft block, etc., the shape of the vegetation mat is maintained until the seeds are rooted and sprouted and stabilized, but proper water supply is required. Until the form was not maintained until the plant dies, sometimes due to excessive moisture caused a problem that the seeds rot.

The present invention is to solve the problems of the prior art, the technical problem is to improve the durability and shape stability of the rope and vegetation material by coating the surface of the rope and vegetation material used in the conventional rubber composition.

In order to achieve the above object, the present inventors coated the rope and vegetation material used in the past with a rubber-containing composition to produce a rope and vegetation material with high durability and form stability.

In the description and claims of the present invention, "rope" refers to a natural fiber rope made of natural or biodegradable material and decomposable in a short time, and is a natural material such as coir fiber, jute fiber, cotton fiber or vegetable fiber. A rope made of one or more lines twisted together. The natural fiber material may be coir fiber, jute fiber, cotton fiber or rice straw.

In addition, the "vegetable material" is a vegetation roll, vegetation mat, vegetation net, coir felt, coir net, vegetation bag, coir blanket, jute mash, jute bag, as well as natural natural It is made of materials, and the inside is filled with soil, artificial soil, charcoal, natural fiber, and non-woven fabrics.It is installed on slope incisions, riversides and slopes to protect the ground and to grow plants such as herbs. Used in a comprehensive sense. 1 shows a rope which can be coated with a rubber component-containing composition according to the invention, FIG. 2 is a net, FIG. 3 is a harness, FIG. 4 is a bamboo shaped product, and FIG. 5 shows a vegetation mat. Figure 6 shows a product filled with soil inside the bamboo-shaped product of Figure 5;

The vegetation material can produce various applied vegetation materials including the rope of the present invention using coir fibers or jute in addition to those described above, and vegetation materials of the type not specified above are also included in the scope of the present invention. Inclusion is obvious to those of ordinary skill in the art.

The rubber component-containing composition of the present invention comprises i) a rubber component, ii) a component for the crosslinking process of the rubber component, and iii) a functional additive.

As the rubber component i) in the rubber component-containing composition of the present invention, natural rubber or synthetic rubber can be mixed and used alone.

Natural rubber has a solid form and a liquid form, and the double liquid form is generally referred to as latex. Latex has a specific gravity of 0.98. Ingredients are 60% water, 35% rubber, 2% protein, 1% soap, fatty acids and sterols, 1% sugar, 0.4% minerals, enzymes and others. Particles of natural rubber wrapped in protein layers are suspended in water, and the diameter of most particles is 0.5 to 1μ. Latex is distributed by concentrating the rubber component content to 60 to 70% by various methods such as centrifugation, cleaning and evaporation. In the present invention, as a latex which is a liquid natural rubber, a solid content of 60 to 65 wt% was used. It is commercially available and can be easily purchased and used.

Natural rubber has excellent elasticity and elongation, but has poor heat resistance, ozone resistance, processability, and durability, and is particularly susceptible to decay. When only latex is used as a natural rubber component, there is no burden on environmental pollution, but since the latex itself is in a colloidal state, coating of vegetation materials is difficult and thus the workability is reduced, so that synthetic rubber is mixed with the natural rubber component. Natural rubber and synthetic rubber are preferably used by mixing in a ratio of 1.6: 1 to 2.6: 1 by weight. If the content of the natural rubber is higher than the ratio, there is a problem that the durability is weakened and workability is lowered, and if the content of the natural rubber is lower than the ratio, there is a problem that it does not act as an environmentally friendly material.

Synthetic rubber used in combination with the natural rubber in the present invention, isoprene rubber (IR), styrene-butadiene rubber (SBR), butadiene rubber (BR), chloroprene rubber (CR), butyl rubber (IIR), ethylene-propylene rubber Synthetic rubber latexes such as (EPM, EPDM), urethane rubber (U), chloro sulfonated polyethylene rubber (hypalon, CSM) and styrene-butadiene-vinylpyridine (VPL) may be used alone or in combination. Preferably, it is best to use styrene-butadiene rubber and butadiene rubber in a ratio of 4: 1 to 1: 1 by weight.

In the present invention, a crosslinking agent (or a vulcanizing agent), a vulcanization accelerator, and a vulcanization accelerator are included as components for the crosslinking process of the rubber component in the rubber component-containing composition.

The crosslinking agent is mixed with the rubber component to form a crosslinked structure between the rubber molecules, thereby increasing the elasticity of the rubber to give the rubbery elasticity. In diene rubbers with double bonds in the molecular chain of rubber, sulfur is usually used as a vulcanizing agent, but peroxides or synthetic resins are sometimes used when there are no double bonds in the carbon chain. Such vulcanizing agents are thermally vulcanized through a heat source such as water vapor or air in a state in which raw rubber or other compounding agents are mixed together. The crosslinking agent may be used in an amount of 0.15 to 0.4 parts by weight with respect to 100 parts by weight of the rubber component. If the content is less than 0.15 parts by weight, the crosslinking is insufficient, and when the content is more than 0.4 parts by weight, the hardness rises rapidly and the coating solution becomes hard. Sulfur may be used as the crosslinking agent in the present invention.

The crosslinking aid is used to shorten the molding time during crosslinking and to obtain an appropriate crosslinking structure. The amount of the crosslinking aid may be used in an amount of 0.01 to 0.1 parts by weight based on 100 parts by weight of the rubber component. If the content is less than 0.01 parts by weight, there is almost no effect of the crosslinking aid, and if it exceeds 0.1 parts by weight, the hardness is sharply increased by overcrosslinking. In the present invention, sulfur cross-linking aid BZ (Zinc-di-n-butyl dithiocarbamate), aldehyde ammonia water system, aldehyde amine system, thiourea, guanidine, thiazole, Vulcanization accelerators such as sulfenamide, thiuram, thiophosphate, triazine, and mixtures thereof may be used.

The vulcanization accelerator is for activating the vulcanization accelerator, and may be used in an amount of 0.001 to 0.01 parts by weight based on 100 parts by weight of the rubber component, and if the content is less than 0.001 parts by weight, there is no active effect of the vulcanization accelerator, and the content is greater than 0.01 parts by weight. In other words, the increase in the activating effect of the vulcanization accelerator is weak and it is not economical. In the present invention, one or more metal oxides such as zinc oxide, magnesium oxide, and titanium oxide, which are vulcanization accelerators, and calcium carbonate, barium stearate, stearic acid, and the like can be selected and used.

In the rubber component-containing composition of the present invention, a moisturizing aid and a porous adsorption filling aid may be used as the functional additive.

Moisturizing aids are installed on slope cutouts, riversides, and slopes by filling soil, artificial soil, charcoal, natural fiber, and non-woven fabrics in the vegetation materials to protect the ground, and to maintain moisture in vegetation materials when growing plants such as herbs. Is added for Bark, jute, coir, crest, waste wood, etc., which is a natural material, is coated by adding 1 to 20 parts by weight to the composition in the form of powder made of a predetermined powder. If the content is less than 1 part by weight, the effect is insignificant. If the content is more than 20 parts by weight, the increase in the effect is weak and not economical. By the action of this moisturizing aid, the composition is coated on the vegetation material to form fine pores on the coating surface.

The porous adsorption filling aid is installed in the inclined surface incisions, riversides, inclined ground by filling soil, artificial soil, charcoal, natural fiber, nonwoven fabric, etc. in the vegetation material as above to protect the ground and to grow plants such as herbaceous plants. It is added to adsorb harmful substances such as ammonia in contaminated water and to nourish plants for water purification. Specifically, 1 to 20% by weight of porous adsorbates such as male, elvan, zeolite and pearlite are added and coated. If the content is less than 1 part by weight, the effect is insignificant. If the content is more than 20 parts by weight, the increase in the effect is weak and not economical.

Hereinafter, the process of making a rope or a vegetation material from the rubber component containing composition of this invention is demonstrated.

The method of coating the rope or vegetation material with the rubber component-containing composition of the present invention is shown in Figure 6

I) preparing the rope or material to be coated;

ii) surface treatment of the rope or material to be coated;

iii) preparing a rubber component-containing composition and coating the rubber component-containing composition by dipping, spraying, brushing, etc. according to the properties of the rope or material to be coated;

iv) drying by hot air drying, air drying or quenching to crosslink the rubber component of the coated rope or material; And

v) aging the coated or dried rope or material.

In the step ii) the surface treatment step is to increase the coating adhesion between the rope or the material to be coated with the composition containing the rubber component, immersed in a strong base aqueous solution of 0.01 ~ 0.05 mol / L concentration for 1 minute to 5 minutes, washed with water It consists of steps. As a strong base aqueous solution, sodium hydroxide (NA0H) and potassium hydroxide (KOH) can be used. The preparing of the rubber component-containing composition in step iii) is as follows. First, the rubber component-containing composition of the present invention is made as follows.

Natural rubber, synthetic rubber or a mixture is added to the mixer as a rubber component, and water and an emulsion stabilizer are added to prepare a solution.

2 parts by weight of powdered sulfur, a crosslinking agent, 0.2 parts by weight of ZZ-di-n-butyldithiocarbamate (VZ), and 2 parts by weight of activated zinc oxide, a crosslinking aid, are used as a functional additive. After grinding the charcoal and powder form to make a composition, it was added to the prepared solution and pulverized for about 2 to 3 days to prepare a sol solution.

The present invention reinforces the shortcomings of the existing vegetable material while strengthening the construction of the cod, civil engineering, river construction, harbor construction, building construction. In addition, as the durability is enhanced, there is no need to frequently replace vegetable materials in civil works, river works, port works, and construction works, and as a result, economic effects can be expected.

In addition, when using the vegetation rope and mat coated with the rubber component composition of the present invention can contribute to the stabilization of the base continuously after the vegetation restoration. Rope netting net mat has higher frictional force than plate-shaped felt when installed on the slope, and is produced by attaching seeds or hanging down in porous spaces when seed is sprayed. It does not interfere with growth at all.

Experimental Example 1 Measurement of Tensile Strength of Natural Rubber Component-Containing Composition-coated Rope

As a natural rubber component, the content of natural latex is as shown in the table below, 2 parts by weight of powder sulfur as a crosslinking agent, 0.2 parts by weight of zinc-di-n-butyldithiocarbamate (BZ) as a vulcanization accelerator, and 2 parts by weight of activated zinc oxide as a crosslinking aid. The parts were mixed to prepare a rubber component-containing composition, and a rope having a diameter of 5 mm was used as a general vegetation rope as a coating object material. The rubber component composition was coated on the vegetation rope by dip coating. As a comparative example, the general vegetation rope was not coated.

The tensile strength of the rope was measured to determine the change in the properties of the rope due to the coating. Tensile strength is the maximum stress at which the rope will break under load. The maximum load divided by the original cross section of the specimen is expressed as (kgf / m). The higher the tensile strength, the more load is required until it is broken, and the higher the tensile strength, the more durable. Tensile strength was tested by the Korea Apparel Testing and Research Institute, and the data in each case represent the average of five experiments.

Measurement of Tensile Strength According to Natural Latex Content Natural latex Vulcanizer Vulcanization accelerator Vulcanization Acceleration Tensile strength (kgf / m) Comparative Example 1 - - - - 220 Example 1 75.8 2 0.2 2 525 Example 2 65.8 2 0.2 2 565 Example 3 55.8 2 0.2 2 513 Example 4 45.8 2 0.2 2 475 Example 5 35.8 2 0.2 2 462

As shown in Table 1, the tensile strength of the composition of the present invention was measured when the content of natural latex was 65.8.

Experimental Example 2 Measurement of Tensile Strength of Rope Coated with a Mixing Composition of Natural and Synthetic Rubber Components-Measurement of Change in Tensile Strength According to Changes in Styrene Butadiene Rubber Content

In the case of natural latex, the tensile strength was measured to be 65.8, which was the largest in Experimental Example 1, and the content of SB latex as synthetic rubber was changed as shown in the following table. Was as follows.

Determination of Tensile Strength of Ropes Coated with Styrene Butadiene Rubber Blend Composition Natural latex Styrenebutadiene rubber Vulcanizer Vulcanization accelerator Vulcanization Accelerator Tensile strength (kgf / m) Example 2 65.8 - 2 0.2 2 565 Example 6 65.8 5 2 0.2 2 462 Example 7 65.8 10 2 0.2 2 475 Example 8 65.8 20 2 0.2 2 523 Example 9 65.8 25 2 0.2 2 510 Example 10 65.8 30 2 0.2 2 520

When styrene butadiene rubber was added in addition to the natural latex, the tensile strength was measured when the content ratio of natural latex and styrene butadiene rubber was 65.8: 20.

Experimental Example 3 Measurement of Tensile Strength of Rope Coated with a Mixing Composition of Natural and Synthetic Rubber Components-Measurement of Change in Tensile Strength According to Contents of Styrene Butadiene Rubber and Butadiene Rubber

As a natural rubber component, the content of natural latex is 65.8, and the styrene-butadiene rubber content is 20, and the composition is changed to the content of butadiene rubber as a synthetic rubber as shown in the following table. The result of measuring the tensile strength by preparing the component composition is as follows.

Measurement of Tensile Strength of Ropes Coated with Styrene Butadiene Rubber and Butadiene Rubber Mixtures Natural latex Styrenebutadiene rubber Butadiene rubber Vulcanizer Vulcanization accelerator Vulcanization Acceleration Tensile strength (kgf / m) Example 2 65.8 - - 2 0.2 2 565 Example 11 65.8 20 5 2 0.2 2 632 Example 12 65.8 20 10 2 0.2 2 652 Example 13 65.8 20 15 2 0.2 2 636 Example 14 65.8 20 20 2 0.2 2 613 Example 15 65.8 20 25 2 0.2 2 595 Example 16 65.8 20 30 2 0.2 2 575

As shown in Table 3 above, the tensile strength of the composition of Example 13, in which 15 parts of butadiene rubber was mixed with 20 parts of styrene butadiene rubber, was the highest. Tensile strength was higher in the examples of Experimental Example 3 in which styrenebutadiene rubber and butadiene rubber were mixed than in Experimental Example 1 using only natural latex.

Experimental Example 4 Measurement of Change in Tensile Strength According to Surface Treatment

Vegetation rope was immersed in 0.1 mol / L sodium hydroxide solution for 1 minute and then washed, coated with the same composition as in Example 13, 4, 15, 16 in Experimental Example 3 and the tensile strength was measured.

Measurement of Tensile Strength of Ropes Coated with Styrene Butadiene Rubber and Butadiene Rubber Mixtures Natural latex Styrenebutadiene rubber Butadiene rubber Vulcanizer Vulcanization accelerator Vulcanization Acceleration Surface treatment Tensile strength (kgf / m) Example 12 65.8 20 10 2 0.2 2 x 652 Example 13 65.8 20 15 2 0.2 2 x 636 Example 14 65.8 20 20 2 0.2 2 x 613 Example 15 65.8 20 25 2 0.2 2 x 595 Example 12-1 65.8 20 10 2 0.2 2 o 678 Example 13-1 65.8 20 15 2 0.2 2 o 656 Example 14-1 65.8 20 20 2 0.2 2 o 635 Example 15-1 65.8 20 25 2 0.2 2 o 612

As shown in the above table, in the case of Examples 12-1 to 15-1 subjected to surface treatment in order to increase the adhesion between the rope and the composition, the tensile strength was constant compared to Examples 12 to 15 coated with the same composition without surface treatment. By increasing the ratio, the surface treatment process increased the adhesion strength of the rubber component-containing composition of the present invention to increase the tensile strength, which results in improved durability due to the surface treatment.

Experimental Example 5 Preparation of Composition-Coated Rope with Functional Additives and Performance Test (Tensile Strength)

When the moisturizing aid and the porous adsorption filling aid were added as functional additives to the same composition as in Examples 13 to 17 of Experimental Example 3, the tensile strength was measured and shown in Table 5. Jute and Coir Bark were mixed in a 1: 1 weight ratio as a moisturizing aid, and then used to grind it into a powder form, and the ganban rock powder + charcoal powder were used as a porous adsorption filler.

Measurement of Tensile Strength of Ropes Coated with Compositions Containing Functional Additives Natural latex Styrenebutadiene rubber Butadiene rubber Vulcanizer Vulcanization accelerator Vulcanization Acceleration Moisturizing Supplements Porous Adsorption Filling Aids Tensile strength (kgf / m) Example 12 65.8 20 10 2 0.2 2 - - 652 Example 13 65.8 20 15 2 0.2 2 - - 636 Example 14 65.8 20 20 2 0.2 2 - - 613 Example 15 65.8 20 25 2 0.2 2 - - 595 Example 12-2 65.8 20 10 2 0.2 2 10 30 620 Example 13-2 65.8 20 15 2 0.2 2 20 20 604 Example 14-2 65.8 20 20 2 0.2 2 20 30 590 Example 15-2 65.8 20 25 2 0.2 2 30 20 574

As shown in the above table, when the functional additive is a moisturizing aid of jute, coir bark, and porcelain adsorption filling adjuvant, ganban rock powder + charcoal powder is used, the tensile strength is reduced than when the functional additive is not included. It was measured higher than in the case of Comparative Example 1 of Experimental Example 1 not included as a rubber component composition.

Experimental Example 6 Germination Experiments

In general, commercially available ropes (ropes used in Comparative Example 1) were prepared in a general Coir vegetation mat form (500 × 500 T30) as shown in FIG. 5. The general coir vegetation mat form (500X500 T30) of this size was dip-coated with the composition of Examples 12-2, 13-2, 14-2, which is a composition to which a certain amount of a functional filler and a functional filler supplement were added. Prepared.

Soil was filled in each vegetation mat thus prepared, and comparative germination experiments were performed. At the time of comparative germination experiment, the average temperature of the laboratory was 25 ° C., and watering was performed once a day, and the soil layer was 100 mm.

Germination test results Mat coated with the composition of Example 12-2 Mat coated with the composition of Example 13-2 Mat coated with the composition of Example 14-2 Comparative Example 2 (mat made of rope of Comparative Example 1) 5-day germination rate 45% grass 55% grass 45% grass Both grass 35% Native Plant 25% Native Plant 35% Native Plant 35% Native Plant 0% 10-day germination rate 85% grass 95% grass 80% grass 70% grass Native Plant 80% Native plants 85% Native Plant 90% 50% of native plants 10 days growth height (cm) Grass 12cm Grass 14cm Grass 12cm Grass 5cm Native Plant 7cm Native Plant 9cm Native Plant 10cm Native Plant 2cm Plant growth after 3 weeks 3-4 leaf leaves, growing without any problems in growth Stable growth and fillers and supplements helped stem growth of plants. Among the germination test samples, the leaves of the plant showed the deepest green color and showed steady growth. Due to the lack of solidity, there was a lot of shaking due to the wind, causing yellowing of the leaves. Plant growth after 4 weeks It grew densely with a greening rate of more than 90%, and was not integrated with the block and separated from plants. The greening rate was over 90%, and the strong growth required a certain amount of batteries. The growth of native plants was the most active, and the role of filling supplements seems to be large. The greening rate was increased by 50%, and the plant and the mat were separated with a slight force.

When the vegetation mat coated with the composition of <Example 12-2> and the vegetation mat coated with the composition of <Comparative Example 2> were used, the germination of plants was shown in FIG. 7. Both grasses showed similar germination rates in early germination, but in the case of native plants with high water demand, germination began only on the vegetation mat coated with the composition of <Example 12-2, 13-2, 14-2>, 10 days There was a marked difference in germination rate even after the passage of time. The vegetation mat coated with the composition of <Example 12-2, 13-2, 14-2> is germinated due to the moisturizing power of the latex, which is a natural rubber component, while maintaining its shape by the tensile strength of the latex used as the coating composition. It was found to have a lot of influence.

Even after the plants were grown in Comparative Example 2, the adhesion with the ground was small, so that the plants fell even in the wind, and there was a lot of difficulty in growth.

On the other hand, the mat coated with the composition of <Example 13-2, 14-2>, which is stable in block form, showed smooth growth from early germination to maturity, and more than 90% of greening rate was confirmed.

In addition, in the case of native plants, it was possible to confirm high germination and growth power in the mat coated with the composition of <Example 14-2> having a high content of the filling aid.

1 shows a rope according to the invention.

2 shows a net made by the present invention.

Figure 3 shows the fiber roll produced by the present invention.

4 shows a bamboo shaped product made according to the present invention.

Figure 5 shows the vegetation mat prepared by the present invention.

6 shows one method of carrying out the production method of the present invention with a bag.

7 shows the germination state of plants when the vegetation mat coated with the composition of <Example 12-2> and the vegetation mat coated with the composition of <Comparative Example 2> are used.

Claims (8)

i) a rubber component in which a natural rubber, a synthetic rubber in which styrene-butadiene rubber (SBR) and butadiene rubber are mixed in a weight ratio of 1: 1 to 4: 1, is mixed in a weight ratio of 1.6: 1 to 2.6: 1; ii) a component for the crosslinking process of the rubber component; And iii) consisting of functional additives Vegetation material coated with a rubber component-containing composition. delete delete The method of claim 1, Iii) as a functional additive, a moisturizing aid is used in the form of powder made by grinding any one selected from the group consisting of bark, jute, coir, crest, waste wood, and 100% by weight of the rubber component A vegetation material coated with a rubber component-containing composition, characterized in that added to 1 to 20 parts by weight relative to the part. The method of claim 1, Iii) the porous adsorption filling aid as a functional additive is used in the form of powder made by grinding any one selected from the group consisting of male, elvan, zeolite and pearlite, and 100 parts by weight of the rubber component in the rubber component-containing composition. A vegetation material coated with a rubber component-containing composition, characterized in that 1 to 20 parts by weight relative to. The method of claim 1, The vegetation material is a vegetation material coated with a rubber component-containing composition, which is a rope, or a net, roll or bag made with a rope. i) preparing the vegetation material to be coated; ii) a surface treatment step of immersing the vegetation material to be coated in an aqueous solution of sodium hydroxide (Na0H) for 1 to 5 minutes and then cleaning the surface; iii) preparing the coating with a composition comprising a rubber component and an additive; iv) coating the coating agent by dipping, spraying, or applying a brush according to the characteristics of the vegetation material to be coated; And v) drying by hot air drying, natural drying or quenching to vulcanize the rubber component of the coated vegetation material. delete

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