KR101969825B1 - method of luminescent bollard using waste plastic and synthetic rubber resin - Google Patents

Abstract

The present invention relates to a manufacturing method of a support for crops using waste plastics as a main material, and more preferably, to a manufacturing method of the support for crops, which has innovatively increased durability and anti-aging properties of the support required as a support means having light weight and high elasticity by using waste materials such as the waste plastics as the main material. More specifically, the manufacturing method of a support for crops using waste plastics obtains a light support with excellent tensile strength, elastic force and flexural strength and can minimize deformation of the support due to an external pressure or an impact in the long term by adding SAN (styrene acrylonitrile) and EAC (ethylene acrylate copolymer) having excellent chemical resistance, corrosion resistance and workability as additives to a ground material obtained by grinding the waste plastics that have been discarded after using to a predetermined size.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a luminescent bollard using waste plastics and synthetic rubber resins,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a bollard using waste plastics and synthetic rubber as main materials, (Styrene acrylonitrile) and EAC (Ethylene acrylate copolymer) which are excellent in workability. It is lightweight, has excellent tensile strength, elasticity and bending strength, can minimize the deformation due to external pressure or impact for a long period of time, The present invention relates to a method of producing a bollard using waste plastics and synthetic rubber resins which emit light without use.

Generally, bollard is an obstacle that is installed to prevent the entry of a car into a pedestrian road, and it usually takes the form of a struc- ture made of a rigid structure such as iron or concrete.

In recent years, however, the function of indicating roadway and vehicle or forbidden areas has been preferred rather than the entry of automobiles. However, problems such as damage to the vehicle body caused by a slight hitting of automobiles due to rigid structures such as iron or concrete Although it is gradually replaced by lightweight stainless steel pipe and high strength elastic material which has excellent impact absorption and excellent resilience, it is constructed to absorb impact by elastic itself, so there is a limit to bollard and impact absorption, And the breakage of the bollard can not be prevented.

In order to solve the above problems, Korean Patent No. 740552 discloses a shock absorbing elastic bollard in which a support, an impact absorbing cylinder, a tubular rotation supporting means and a support rail are constituted to absorb and disperse the impact when a vehicle collides In addition, the domestic registered patent No. 0747117 has a disadvantage in that it is necessary to excavate the road as a base when installing or repairing the bollard, and in order to improve it, it is necessary to replace the existing metal material and stone with waste synthetic resin Discloses a bollard in which a support bar and a support bar are detachably mountable so that the vehicle can enter the sidewalk in an emergency situation. Korean Patent No. 1113136 discloses a technique for a rotary type elastic bollard in which an external impact is minimized by being rotated in both directions in accordance with an impact direction. In Korean Patent No. 1033740 and 1424576, Discloses a bollard for improving the visibility of the bollard to improve the function of the bollard and to prevent a safety accident.

In addition, Korean Registered Utility Model No. 0451407 discloses a shock absorbing bollard equipped with a cover for shock absorption, and Korean Utility Model No. 2014-0006281 discloses a shock absorbing bollard having a cover for impact absorption, A technology for a road bollard capable of emitting light by its own power supply and capable of enhancing visibility at night is disclosed, and domestic public utility model 2017-0001057 has an elastic material and a buffer part so that a pedestrian or a vehicle collides with a bollard In addition, since the solar cell is installed and the power is supplied by itself, the LED is lit at night to allow the light to be emitted, thereby reducing the risk of collision. In addition, Is disclosed.

Meanwhile, in recent years, attempts have been made to recycle industrial waste, which is abandoned and used in industrial sites or homes, as various building materials without discarding them. In particular, waste plastics among waste materials have a great social problem due to difficulty in processing such as waste, which does not rot after a long period of time, and more safe and beneficial recycling technologies of waste plastics have been introduced and implemented. However, It is difficult to recycle it.

(KR) Korean Patent No. 740552 (KR) Korea Patent No. 747117 (KR) Korea Patent No. 1113136 (KR) Korean Patent No. 1033740 (KR) Korean Patent No. 1424576 (KR) Domestic registered utility model 0451407 (KR) Domestic Public Utility Model No. 2014-0006281 (KR) Domestic registered utility model 2017-0001057

The applicant of the present invention has found that the present applicant has excellent tensile strength, bending strength, impact resistance, creep resistance, abrasion resistance, chemical resistance, and less occurrence of crazing due to internal stress after molding and minimizes discoloration due to sunlight or long- And a bollard using a resin composition obtained by mixing waste plastic, synthetic rubber and SAN (styrene acrylonitrile) resin.

In addition, the SAN (styrene acrylonitrile) resin of the present invention is highly dispersed and concentrated at a high concentration to improve the kneadability with the pulverized waste plastic material, and masterbatch is formed in the form of pellets, And ease of workability.

Further, the composition of the masterbatch is composed of waste plastics powder, SAN (styrene acrylonitrile) resin, synthetic rubber resin, lubricant, pigment, stearic acid, and oxidized polyethylene wax.

Another object of the present invention is to provide a luminescent bollard coated with a phosphorescent pigment capable of exhibiting various colors and patterns with enhanced functions, and capable of emitting light by itself without a power source at night.

A method of manufacturing a bollard according to the present invention will now be described in detail with reference to the accompanying drawings.

 A method of manufacturing a bollard using waste plastic according to the present invention comprises the steps of selecting waste plastic, washing and drying it, cutting the waste plastic with a cutter, and crushing the waste plastic with a crusher;

 A pulverizing step of pulverizing the pulverized waste plastic to a suitable size using a pulverizer;

20 to 40 parts by weight of a synthetic rubber resin, 10 to 30 parts by weight of a master batch mixture, 1.5 to 4 parts by weight of a stabilizer, 3 to 10 parts by weight of EAC (Ethylene acrylate copolymer resins) 1.5 to 4 parts by weight of a filler, 1 to 2 parts by weight of a processing aid, 5 to 9 parts by weight of an impact modifier, and 0.1 to 2 parts by weight of a lubricant;

A shaping step of shaping the mixed mixture into a strut shape through a high frequency induction type extruder;

And applying a phosphorescent pigment to the outer circumferential surface of the formed bollard to perform coating treatment.

The present invention having such characteristics as described above can be applied to a bollard which is formed by adding a synthetic rubber, a master batch mixture and an additive to a papermaking resin, can vividly color various colors, and the outer surface of the luminescent pigment is coated with a coating agent It is possible to maintain safety by emitting light at night even without using a power source or the like, and also has the effect of remarkably improving strength and life span while being a highly elastic lightweight product having flexibility required as a bollard.

In addition, the master batch mixture of the present invention has excellent mutual kneading ability with waste plastics and synthetic rubbers. SAN in the master batch mixture composition has a high tensile strength to improve the tensile strength at the time of molding. Ethylene acrylate copolymer imparts flexibility, And has the effect of simultaneously improving flexibility and impact resistance.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

20 to 40 parts by weight of a synthetic rubber resin, 10 to 30 parts by weight of a master batch mixture, and 10 to 30 parts by weight of an ethylene acrylate copolymer resins (EAC) (3) are added to 100 parts by weight of pulverized waste plastics according to the present invention. , 1.5 to 4 parts by weight of a filler, 1.5 to 4 parts by weight of a stabilizer, 1 to 2 parts by weight of a processing aid, 5 to 9 parts by weight of an impact modifier, and 0.1 to 2 parts by weight of a lubricant.

The term waste plastic as used herein means waste plastic such as polyethylene, terephthalate, polyvinyl chloride, polypropylene, polycarbonate, polyacetyl, polystyrene or methacrylic resin. The synthetic rubber in the present invention may also be selected from among styrene butadiene rubber (SBR), butadiene rubber (BR), polychloroprene rubber (CR) and ethylene propylene rubber (EPR) Means one or more species.

In order to impart a specific function to a plastic product to be produced in the process of molding the plastic by extrusion or injection using a plastic raw material, it is necessary to add an additive having a desired function to the basic plastic raw material, It is possible to manufacture a plastic product having a high heat resistance. The additive having such a function is generally difficult to use because it is mixed with the plastic raw material directly because most of the additive is in a powder state or a liquid state and the miscibility with the basic plastic raw material is poor, You can not make it. "Master batch" means a raw material in the form of pellets in which base plastic materials and additives to be added are concentrated and dispersed at a high concentration to solve these problems. In the present invention, the waste plastic crushed material, the synthetic rubber resin and the master batch are mixed and processed to produce a plastic product having a desired color or a specific function. The composition components and the composition ratios of the master batch in the present invention are shown in Table 1.

Master batch composition Raw material Weight portion Remarks Waste plastic crusher 100 SAN (Styrene Acrylonitrile) 20 to 60 Synthetic rubber resin 5 to 50 Lubricant 0.1 to 2 Pigment 0.1 to 2 Stearic acid 1-4 Oxidized polyethylene wax 2 to 4

Components and composition ratios of masterbatch composition

SAN resin is a binary copolymer made by polymerizing styrene which is an aromatic hydrocarbon and acrylonitrile which is an unsaturated nitrile. It is a binary copolymer which has tensile strength, flexural strength, impact resistance, creep resistance, abrasion resistance, chemical resistance, transparency, There is a problem that the thermoplastic resin, polyvinyl chloride resin or EAC (ethylene acrylate copolymer), which is excellent in chemical resistance, heat deformation and gloss, and which is less likely to cause crazing due to internal stress after molding, is poor in kneadability. The synthetic rubber resin may be one selected from the group consisting of styrene butadiene rubber (SBR), butadiene rubber (BR), polychloroprene rubber (CR) and ethylene propylene rubber (EPR) Or two or more kinds thereof, which greatly enhance pressure resistance, impact resistance, flexibility, elasticity and corrosion resistance, but also have a disadvantage in that they are poor in kneadability with waste plastics. Accordingly, in the present invention, SAN (Styrene Acrylonitrile Copolymers) resin, which is poor in kneadability with waste plastic crushed material, is master batch-formed.

The addition of a stabilizer in the processing of plastics facilitates processing and is added during polymerization to compensate for or improve the poor physical properties of these products. In the present invention, Zn and Ca stabilizers are added, Suppresses the occurrence and facilitates release.

The processing aid serves to accelerate the gelling of the resin. In the present invention, an acrylic processing aid is used, and carbonic acid is used as a filler. Calcium carbonate is inexpensive and increases moldability, reduces the abrasion of the mixing and processing apparatus, facilitates processing because of a wide range of adjustment of the particle size, and in particular, calcium carbonate having a particle size of less than 0.1 탆, And disperses the impact applied to the outside of the synthetic resin pipe to strengthen the impact resistance.

Impact reinforcing agent It is a material reinforcing the impact resistance by imparting elasticity to the resin composition, thereby increasing the tensile, compression and impact strength, and improving the dimensional stability and resistance to thermal deformation. In the present invention, MBS (methyl methacrylate butadiene styrene) impact modifier and CPE (chlorinated polyethylene) impact modifier are used as an impact modifier. In the present invention, a pigment is added to impart various colors to the bollard. Is selected from among pigments such as TiO2, HgS, CuCO3, Cu (OH) 3, As2S2, Pb3O4, PbCO3, CaCO3, Phthalocyanine BLUE, Diazo Yellow, carbon black, zinc oxide or copper sulfate depending on the desired color. In the present invention, it is possible to further add an activator per R-site as an additive. The compositional components and composition ratios of the bollard of the present invention using plastics are shown in Table 2

Compositional composition and composition ratio Raw material Weight portion Remarks Waste plastic crusher 100 Primary H-Mixer temperature
: 100-140

Secondary C-Blender temperature
: 60 ° C Synthetic rubber resin 20 - 40 Master batch mixture 10 to 30 EAC 3 to 10 Filler 1.5 to 4 stabilizator 1.5 to 4 Processing aid 1-2 Impact modifier 5 ~ 9 Lubricant 0.1 to 2

Composition and composition ratio of bollard

 In the present invention, the waste plastic collected in an industrial site or the like is thoroughly cleaned and dried, and then the foreign substance on the cleaned and dried waste plastic is sorted through a sorting machine.

The selected waste plastic is crushed to a size of about 30-50 mm, which is a fine size that can easily be processed by a crusher, and then crushed to a size of 0.5-2.0 mm using a crusher. In the case of exceeding 2 mm, the durability of the produced bollard tends to be poor or the moldability may be deteriorated. Therefore, the size of the fine particles is preferably 0.5 to 2.0 mm Is preferably maintained.

When the master batch mixture is less than 10 parts by weight, moldability of the support pillars may be deteriorated. When the master batch mixture is more than 30 parts by weight, the utilization ratio of the master batch mixture is increased. However, The physical properties of durability may be deteriorated. Therefore, the master batch mixture is preferably used in a range of 10 to 30 parts by weight based on the total mixture.

The bollard manufactured through the manufacturing method of the present invention is in the form of a panel. The bollard is manufactured by the manufacturing method of the present invention. It is preferable to crush it to a fine size as described above since it is a general shape of a rectangular bar having a square cross section and a cylindrical shape.

The waste plastic pulverized product is introduced into a compounding machine together with a synthetic rubber resin and blended with the master batch and dried for a predetermined time.

Therefore, it is fed to a high-frequency heating type extruder so that the product can be formed in the shape of an angled square, a triangle or a cylindrical rod as a bollard excellent in permeability, adhesion, durability, aging resistance and flame retardancy.

The bollard which has undergone the extraction step is coated with an accumulative glaze so that it can emit itself at night.

Transparent glaze that is incorporated into the light-axis glazing in the present invention are SiO ₂ 100 parts by weight, Na ₂ O, 15-20 parts by weight, B ₂ O ₃ , 10-20 parts by weight K ₂ O 1-5 parts by weight, Li ₂ O 2-6 parts by weight, and Al ₂ O ₃ 5-10 The glaze composed of a weight part has good translucency and has a low melting point, which is easy to manufacture. The phosphorescent pigment is preferably composed of a compound which is harmless to the human body, such as (SrO) (MgO) and Al ₂ O ₃ SrO ₃ B ₂ O ₃ , and has high brightness, long duration, and excellent heat resistance. When the amount of the phosphorescent pigment is too small, the phosphorescent effect can not be obtained properly. If the amount of the phosphorescent pigment is too high, the cost increases. Therefore, 100 parts by weight of the transparent glaze and 20 to 70 parts by weight of the phosphorescent pigment are mixed, When the phosphorescent layer is used for general purposes, the phosphorescent layer is formed to a thickness of 80-120 mu m, thereby solving the problem of phosphorescent effect and cost at the same time.

≪ Example 1 >

≪ Production of Resin Composition >

30 parts by weight of a styrene butadiene rubber (SBR), 10 parts by weight of a master batch mixture, 1.5 parts by weight of a Zn stabilizer, 1.5 parts by weight of a Ca stabilizer, 0.5 parts by weight of an ethylene acrylate copolymer resins (EAC) 5 parts by weight of a filler, 2 parts by weight of a filler, 1 part by weight of a processing aid, 5 parts by weight of an impact modifier, and 0.2 parts by weight of a lubricant.

≪ Example 2 >

<Manufacture of Bollard>

The resin composition of Example 1 was transferred to a high-frequency heating type mold extruder so as to be formed in the form of a square, a triangle or a cylinder rod, heated at 110 to 140 캜, extruded, and taken out to form a bollard. A luminous bollard was prepared by coating the upper part of the bollard with an accumulative glaze mixed with a transparent glaze and a phosphorescent pigment at the upper end of the bollard.

Claims (5)

Cutting waste plastic, washing and drying, cutting with a cutter, and crushing with a crusher to a size of 30 to 50 mm;
Crushing the crushed waste plastic to a size of 0.5 to 2.0 mm suitable for rubbing with a crusher;
100 parts by weight of waste plastic, 20 to 60 parts by weight of SAN (styrene acrylonitrile), 5 to 50 parts by weight of a synthetic rubber resin, 0.1 to 2 parts by weight of a lubricant, 1 to 4 parts by weight of stearic acid, 0.1 to 2 parts by weight of a pigment, 2 to 4 parts by weight of a master batch mixture;
20 to 40 parts by weight of a synthetic rubber resin, 10 to 30 parts by weight of a master batch mixture, 1.5 to 4 parts by weight of a stabilizer, 3 to 10 parts by weight of EAC (Ethylene acrylate copolymer resins) 1 to 2 parts by weight of a processing aid, 5 to 9 parts by weight of an impact modifier, and 0.1 to 2 parts by weight of a lubricant to prepare a resin composition;
Extruding the mixed resin composition through a mold extruder of high frequency heating type;
Coating an extruded bollard with an accumulative glaze on the upper outer circumferential surface of the bollard;
Wherein the light emitting bollard includes a plurality of light emitting bollards. The method according to claim 1,
The synthetic rubber resin of the master batch mixture is selected from the group consisting of styrene butadiene rubber (SBR), butadiene rubber (BR), polychloroprene rubber (CR), and ethylene propylene rubber (EPR) And wherein the light emitting bollard is one or two selected from the group consisting of the light emitting bollard and the light emitting bollard. delete delete The method according to claim 1,
Wherein the waste plastics are wastes of polyethylene, terephthalate, polyvinyl chloride, polypropylene, polycarbonate, polyacetyl, polystyrene or methacrylic resin.