KR101644564B1

KR101644564B1 - A synthetic resins boundary stone

Info

Publication number: KR101644564B1
Application number: KR1020150135995A
Authority: KR
Inventors: 강순진
Original assignee: 주식회사 스텝스톤
Priority date: 2015-09-25
Filing date: 2015-09-25
Publication date: 2016-08-02

Abstract

The present invention relates to a synthetic resin boundary stone having excellent flame retardancy and improved breaking strength. To improve the strength of the recycled polypropylene, glass fiber is added and a flame retardant is added to improve the flame retardancy to improve the flame retardancy, A plurality of support walls are formed in the longitudinal direction so as to define a space portion formed in the upper and lower surfaces in a state that the rear surface is opened, And a plurality of upper protrusions are formed on the upper surface to be spaced apart from each other by a predetermined distance. On the lower surface of each of the spaces defined by the support walls, a lower concrete layer And a lower hole Is formed, and the pigment is added to the various colors is possible flame retardancy is excellent and provides a breaking strength enhanced resin boundary stone.

Description

{Synthetic resins boundary stone with excellent flame retardancy and improved breaking strength}

More particularly, the present invention relates to a synthetic resin boundary sheet excellent in flame retardancy and improved in breaking strength. More specifically, glass fiber is added to improve the strength of the recycled polypropylene, and a flame retardant is added to improve flame retardancy, Which is excellent in flame retardancy and durability which is not cracked due to an increase in breaking strength, and which has improved breaking strength.

Generally, a boundary stone is installed to divide a roadway, a sidewalk, a sidewalk, and a breakwater, and the boundary stone currently used is installed on a ground 1 at a point between the road and the sidewalk, .

In this state, a display bar (3) is provided so as to be able to accurately place the barrier stones at the position where the front part of the barrier stones (2) is located, and the bar stones Install the base plate (4).

The concrete block 5 to be installed in front of the display bar is temporarily arranged and then the concrete block 5 is placed between the floor plate 4 and the barrier block 2, So that the concrete which is being conveyed is a height not exceeding the display bar (3).

In the state where the concrete poured as described above is waiting to be hardened to some extent, the respective boundary stones 2 located in front of the concrete are put on the concrete surface in accordance with the display line 3, 2).

When the installation of the barriers is completed, the display bar 3 and the support plate 4 are removed, as well as the concrete exposed in front of the barriers is cleanly removed, The road is packed in the roadway, and the roadside is covered with sidewalk and the sidewalk is laid on the roadside.

However, the above-mentioned conventional boundary stone is made of granite as a main material and has a basic size of about 200 mm in width and 300 mm in length and about 1 M in length, so that the weight is relatively large and the worker can carry only one barrier When transporting the barriers to the work site, a conveying machine such as a crane was required when placing the barriers carried at the work site. When moving and installing the barriers at the work site, Since a man's worker can not carry heavy seamstones, two or more workers must carry the seamstones and put them on concrete that has been laid. Therefore, Because you have to put on the construction Since it is relatively difficult to accurately adjust the height and the daytime of the slope, only skilled workers need to install the slope so that the efficiency of the work is lowered. Moreover, even if the skilled worker constructs the slope, There was a lot of problems such as rebuilding the concrete with the heavy stones being lifted up again and rebuilding.

In order to solve this problem, the present applicant has proposed a boundary stone made of waste synthetic resin named 'Boundary Stone and its construction method' in the registered patent 10-0998238, and the present invention has many problems of the existing granite boundary stones described above 2, the boundary stones are formed by using waste synthetic resin as a material. The front and back surfaces are formed with a backside as a starting point, and upper and lower surfaces are formed. In addition, The strength of the synthetic resin material itself is weak compared with the strength of the conventional boundary stone of the stone material and is frequently damaged due to collision with a vehicle and therefore frequent replacement is required And there is a lack of supporting wall between the upper and lower sides of the boundary Therefore, the problem that the support strength is weakened and the front part is damaged due to receiving the load applied to the upper surface is exposed, and when the upper surface of the boundary is made of synthetic resin, the pedestrian slides on the upper surface of the boundary There is a risk of safety accidents, and the color of the boundary stones is made of a monochromatic black or dark gray-based achromatic color, which is not good for aesthetics of the city.

[0030]

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a polypropylene resin composition which comprises glass fiber and flame retardant added to recycled polypropylene, A plurality of supporting walls for partitioning the inner space between the upper and lower sides of the barrier seams are formed and sidewalls are formed on each of the both sides to distribute the load applied to the upper surface evenly over the front and upper surfaces, And a plurality of upper protrusions are formed on the upper surface of the barrier stones to prevent slippage of the pedestrian. By adding pigment and ultraviolet screening agent to the synthetic resin material at a constant weight ratio, the synthetic resin barrier stones having various colors are produced and maintained, And various colored borders suitable for the environment It is an object of the present invention to provide a synthetic resin boundary stone excellent in flame retardancy and capable of improving the breaking strength, which can enhance the appearance of the city.

These objects of the present invention are achieved by a method for producing a recycled polypropylene resin by adding a glass fiber and a flame retardant to a recycled polypropylene to prepare a recycled polypropylene resin and then mixing the pigment and the ultraviolet screening agent at a predetermined weight ratio, A plurality of support walls are formed in the longitudinal direction so as to define a space formed inside the upper and lower surfaces in a state that the rear surface is open, side walls for blocking the side surfaces are formed on both side surfaces thereof, And a lower hole through which a fastening member embedded in the lower concrete layer passes and is fixed is formed on the lower surface of each of the space portions defined by the support wall. Various colors can be realized by the pigment This is achieved by a synthetic resin barrier having excellent flame retardancy and improved breaking strength.

The weight ratio of the components constituting the reclaimed polypropylene resin is 5 to 10 parts by weight of a flame retardant, 1 to 2 parts by weight of a pigment, 1 to 2 parts by weight of a flame retardant, And 2 to 3 parts by weight of a blocking agent are added and mixed. Preferably, 7 parts by weight of a flame retardant, 1 to 2 parts by weight of a pigment is added to 100 parts by weight of a mixture of 90 to 95 parts by weight of polypropylene and 5 to 10 parts by weight of glass fibers, And 2 to 3 parts by weight of an ultraviolet screening agent are mixed to constitute a regenerated polypropylene resin.

The present invention relates to a method for producing a recycled polypropylene resin by adding a glass fiber and a flame retardant to a recycled polypropylene to improve the breaking strength and flame retardancy of the synthetic resin boundary stone and to add a pigment and an ultraviolet screening agent to the recycled polypropylene resin A synthetic wall is constructed, and side walls are formed on both sides of the synthetic resin boundary, and a plurality of supporting walls are formed between the upper and lower sides to distribute the load applied to the upper side to both side walls and the supporting walls, And a plurality of upper protrusions are formed on the upper surface of the barrier to prevent pedestrians from slipping to prevent pedestrians' safety accidents, and to exhibit an excellent effect of improving the beauty of the city by expressing synthetic resin barrier stones in various colors.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exemplary view showing a construction state of a conventional boundary stone. Fig.
2 is a perspective view showing an example of a conventional synthetic resin boundary stone.
3 is a perspective view of a synthetic resin boundary sheet according to an embodiment of the present invention.
4 is a cross-sectional view taken along line II in Fig.
FIG. 5 is a schematic cross-sectional exemplary view showing completion of construction using a synthetic resin boundary stone according to an embodiment of the present invention; FIG.
6 is a flow chart showing steps of manufacturing and constructing synthetic resin boundary stones according to a temporary example of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the annexed drawings. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention. Thickness may be expressed in exaggerated or reduced form.

3 is a cross-sectional view taken along the line II of FIG. 3, FIG. 6 is a cross-sectional view of the synthetic resin boundary stone according to an embodiment of the present invention, and FIG. Fig.

As shown in the drawing, the synthetic resin boundary stones (A) having excellent flame retardancy and improved breaking strength according to an embodiment of the present invention are obtained by adding glass fibers and a flame retardant to the recycled polypropylene, adding pigments and ultraviolet screening agents thereto (A) having excellent flame retardancy and improved breaking strength of the polypropylene-based synthetic resin material which is capable of realizing a variety of colors by pigment is manufactured by using the upper face 10, the lower face 20 and the front face The side walls 40 are formed on the left and right sides of the upper and lower surfaces 10 and 20 so that the upper and lower surfaces 20 and 20 are formed in a ' A plurality of support walls 50 extending upwardly and downwardly spaced apart from each other at a predetermined interval are formed between the upper surface 10 and the upper surface 10 so as to partition the space 60. A plurality of spaced apart spaced apart The upper protrusion 11 is formed and the fastening member 100 embedded in the lower concrete layer 200 penetrates through the lower surface 20 of each of the space portions 60 partitioned by the support wall 50 And the synthetic resin boundary stones are fixedly disposed on the lower concrete layer 200. The lower concrete layer 200 is formed of a synthetic resin,

As shown in Fig. 3, caulking grooves 41 (see Fig. 3) are formed on the outer side surfaces of at least one side wall of the side wall 40 of the synthetic resin barrier claws A at substantially right angles along the edges of the upper surface 10 and the front surface 30 And the elastic packing 42 is inserted into the caulking groove 41 to prevent the occurrence of a gap between the elastic packing 42 and other adjacent synthetic resin boundary seals.

First, as shown in FIG. 6, the first step of manufacturing the synthetic resin boundary stones having excellent flame retardancy and improved breaking strength according to an embodiment of the present invention includes adding glass fiber and a flame retardant to the recycled polypropylene, Thereby performing a process step of manufacturing the resin. The synthetic resin barrier stones according to the present invention are obtained by adding glass fibers to regenerated polypropylene which is a waste synthetic resin to obtain a glass fiber reinforced polypropylene resin which is GFRP (Glass Fiber Reinforced Plastic) The propylene resin is stronger than iron, lighter than aluminum, and has an advantage of being excellent in workability without being rusted. As a typical rigid substitute with carbon fiber reinforced plastic (CFRP), 3 to 15 weight ratio of glass fiber is added to 85 to 97 weight ratio of polypropylene 5 to 10 parts by weight of a flame retardant, 1 to 2 parts by weight of a pigment and 2 to 3 parts by weight of an ultraviolet screening agent are added to and mixed with 100 parts by weight of the mixture, and glass fibers having excellent breaking strength are added to and mixed with polypropylene having excellent tensile strength, And the flame retardancy is added to the flammable polypropylene By making flame retardant against flames such as fire or vehicle explosion that can occur on the road, it is possible to use a recycled polypropylene resin that enables the functions of synthetic resin boundary seats as road seams to be comparable to those of stone seams The process steps of manufacturing are performed.

If the weight ratio of the glass fiber reinforced polypropylene resin constituting the glass fiber reinforced polypropylene resin is reduced to 3 or less, the breaking strength as a boundary stone does not reach the desired breaking strength as desired. On the contrary, if the weight ratio is 15 or more The manufacturing cost is increased sharply and the strength is greatly increased, so that the physical properties of the polypropylene having a high tensile strength can not be exhibited properly, and the stiffness that the barrier is required to exhibit arises.

Such a glass fiber reinforced polypropylene resin is very light, has excellent durability, impact resistance and abrasion resistance, has various advantages such as not rusting, low thermal conductivity and excellent workability, but it has a drawback in that it can not be used at a high temperature , A flame retardant is added to and mixed with a glass fiber reinforced polypropylene as a raw material for synthetic resin boundary stones according to an embodiment of the present invention to firstly provide weak flame retardancy at a high temperature which is a disadvantage of glass fiber reinforced polypropylene, It also allows some damage to the barrier seams to be delayed even in an emergency such as a fire or vehicle explosion that can occur on the road.

When the production of the recycled polypropylene resin having improved breaking strength and flame retardancy is completed by mixing and mixing glass fiber and flame retardant in the reclaimed polypropylene, the color of the recycled polypropylene is in a black or dark gray color, Therefore, in order to develop various colors of synthetic resin boundary stones suitable for the installation place, pigments and ultraviolet screening agents are added to and mixed with the above-mentioned recycled polypropylene resin to prepare a synthetic resin for boundary stones.

The present process step is a step of improving the physical properties of the synthetic resin barrier, that is, the tensile strength, the breaking strength, the flame retardancy, and the like, but the additional function as the synthetic resin barrier, that is, the color development by the pigment, A pigment of 1 to 2 parts by weight, a UV-blocking agent of 2 to 5 parts by weight, and a UV-blocking agent at a weight ratio of 95 to 97 parts by weight of a recycled polypropylene resin mixed with recycled polypropylene, glass fiber and flame retardant, 3 weight ratio to prepare a synthetic resin for barrier stones.

The pigments of this process step can be used as additives for imparting various colors and include known insoluble azo pigments, phthalocyanine pigments, quinacridone pigments, isoindolin pigments, isoindolinone pigments, perylene pigments, perinone pigments, An inorganic pigment such as an organic pigment such as a photographic pigment or an anthraquinone pigment or an inorganic pigment such as a metal oxide or a composite metal oxide such as iron, cobalt, aluminum, cadmium, lead, copper, titanium, magnesium, chromium, zinc, antimony, May be selected to determine the color of the recycled polypropylene synthetic resin in a predetermined color.

In addition, the ultraviolet screening agent of the present process step is an additive for shielding ultraviolet rays and preserving and maintaining the hue of the ultraviolet ray. The known ultraviolet screening agents include known bisbenzotriazole, cinnamate, salicylate, benzophenone, triazine, It is preferable to select any one of them.

The weight ratio of the pigment and the ultraviolet screening agent is a range capable of smoothly performing color development and ultraviolet screening functions, and if mixed in excess, the weight ratio of the synthetic resin is so small that the strength of the barrier is damaged. The expression or ultraviolet blocking function becomes insufficient.

As described above, the regenerated polypropylene resin having excellent flame retardancy and improved breaking strength was prepared by adding glass fibers and a flame retardant to the regenerated polypropylene, and a pigment and an ultraviolet screening agent were added thereto to prepare a regenerated polypropylene synthetic resin. A synthetic resin boundary stone having excellent flame retardancy and improved breaking strength according to an embodiment of the present invention used as a road boundary stone is manufactured.

The synthetic resin boundary stones having excellent flame retardancy and improved breaking strength according to an embodiment of the present invention are formed into a long rectangle shape in the longitudinal direction and have an upper surface 10 and a front surface 30, A plurality of support walls 50 are formed in the longitudinal direction so as to partition the upper and lower surfaces 10 and 20 and the space 60 formed in the rear surface, And a plurality of upper protrusions 11 are formed on the upper surface 10 so as to be spaced apart from each other with a predetermined gap therebetween. The upper protrusions 11 are formed on the upper surface 10, A lower hole 21 is formed in the lower surface 20 of the space portion 60 to penetrate and fix the fastening member 100 embedded in the lower concrete layer 200.

The pair of side walls 40 and the plurality of support walls 50 blocking the left and right sides are provided with a load applied to the upper surface 10 together with the side wall 40 and the support wall 50 as well as the front surface 30 It is possible to receive the load evenly while transmitting the load to the synthetic resin bushing 20, thereby further enhancing the support strength of the synthetic resin boundary stone, thereby preventing breakage or damage due to external force.

In addition, a plurality of upper protrusions 11 spaced apart from each other at a predetermined interval on the upper surface 10 prevent pedestrians from sliding on the upper part of the boundary stones, thereby preventing a safety accident of the pedestrian. If the upper projection 11 is formed into Braille for the visually impaired and the contents of the barrier or the like which comprehends the road and the lead are embossed, the safety accident that falls off the boundary seat during the walking of the visually impaired person .

A lower hole 21 is formed in the lower surface 20 of each of the space portions 60 defined by the support wall 50 so that the fastening member 100 embedded in the lower concrete layer 200 penetrates So that the synthetic resin boundary stones are fixedly disposed on the concrete layer 200 by using the fixing nut 110.

The synthetic resin brittle stone having excellent flame retardancy and improved breaking strength according to an embodiment of the present invention having the above-described technical features can be obtained by first extruding a synthetic resin having the above- .

At the position where the manufactured synthetic resin boundary stones are completed, the fastening member 100 is embedded in the lower concrete layer 200 on the ground in advance, fixed and cured, and is formed to support and fix the synthetic resin boundary stones. The synthetic resin barrier seals are disposed in such a manner that a lower hole 21 formed in the lower surface 20 of the synthetic resin barrier seat passes through the embedded fastening member 100 and a fixing nut 110 The synthetic resin boundary stones and the lower concrete layer 200 are fixed by screwing them to the threaded portion of the upper end of the fastening member 100. [

When the fixing of the synthetic resin boundary layer and the lower concrete layer 200 is completed, the space 60, which is divided into the open rear surface of the synthetic resin barrier, The construction of the synthetic resin boundary stones according to the embodiment of the present invention is completed as shown in FIG.

In the synthetic resin boundary stones having excellent flame retardancy and improved breaking strength according to the embodiment of the present invention, glass fibers and a flame retardant are added to and mixed with the synthetic resin to be a raw material of the synthetic resin boundary stones. In addition to the tensile strength of polypropylene, The weakness of the polypropylene at high temperature is caused by the flame retardant agent and the effect of retarding the fire and explosion by melting. Next, it is possible to express various colors of the synthetic resin barrier by the pigment and the sunscreen, An external load applied to the top surface 10 by the side wall 40 and the support wall 50 formed in the synthetic resin barrier seals is applied not only to the front surface 30 but also to the top surface 10, The side wall 40, the support wall 50, and the like to prevent breakage or damage to the external load, It is possible to prevent the pedestrian from slipping by a plurality of upper protrusions 11 formed on the upper surface 10 of the resinous resinous seam and prevent the safety accident of the pedestrian in advance and to form the upper protrusion 11 into braille for the visually impaired And it is also possible to prevent safety accidents during the walking of the visually impaired by informing the visually impaired in advance of the road borders.

According to the present invention, synthetic resin boundary stones having excellent flame retardancy and improved breaking strength can be manufactured in the boundary stone manufacturing industry which manufactures boundary stones for separating roads and roads, so that it is possible to repeatedly manufacture the same products. something to do.

10: upper surface 11: upper projection
20: lower surface 21: lower surface
30: side wall 40: support wall
50:
100: fastening member 200: concrete layer

Claims

A synthetic resin-made boundary stone produced by mixing a reclaimed polypropylene with an additive for improving flame retardancy and breaking strength,
The synthetic resin boundary stones having excellent flame retardancy and improved breaking strength,
A glass fiber and a flame retardant were added to the recycled polypropylene to prepare a recycled polypropylene resin,
A pigment and an ultraviolet screening agent were added to the prepared recycled polypropylene resin to prepare a synthetic resin,
The upper surface 10, the lower surface 20, and the front surface 30 are formed by injection molding,
Side walls 40 for blocking the side surfaces are formed on both sides,
And a plurality of support walls 50 formed integrally with the upper surface 10 and the lower surface 20 and extending in the vertical direction so as to be spaced apart from each other, Is partitioned to be divided,
A plurality of upper protrusions 11 are formed on the upper surface 10 so as to be spaced apart from each other by a predetermined distance,
A lower hole 21 is formed in the lower surface 20 of each of the space portions 60 defined by the support wall 50 and the fastening member 100 embedded in the lower concrete layer 20 passes through and is fixed And,
A caulking groove 41 is formed on the outer surface of at least one side wall of the side wall 40 of the synthetic resin barrier claw A at substantially right angles along the edges of the upper surface 10 and the front surface 30,
5 to 10 parts by weight of a flame retardant, 1 to 2 parts by weight of a pigment and 2 to 3 parts by weight of an ultraviolet screening agent are added to 100 parts by weight of a mixture of 85 to 97 parts by weight of the recycled polypropylene and 3 to 15 parts by weight of glass fibers, By weight. The synthetic resin boundary stones having excellent flame retardancy and improved breaking strength are characterized in that they are constituted by addition and mixing.

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