WO2013187550A1

WO2013187550A1 - Pipe having internal/external anti-corrosion coating integrated with coupling packing, and method for coupling same

Info

Publication number: WO2013187550A1
Application number: PCT/KR2012/005173
Authority: WO
Inventors: 김동규; 조현석
Original assignee: 듀라케미(주)
Priority date: 2012-06-13
Filing date: 2012-06-29
Publication date: 2013-12-19
Also published as: KR101387422B1; KR20130139694A

Abstract

The present invention relates to a pipe coated with an anti-corrosion paint for preventing corrosion and, more particularly, to a pipe having an internal/external anti-corrosion coating integrated with a coupling packing, and to a method for coupling same, wherein a resin having high restoring force and elongation is used for the anti-corrosion paint, and the entire outer perimeter of one end of the pipe is integrally coated with the anti-corrosion paint to a certain thickness or the entire inner perimeter of an inlet connecting portion is integrally coated to a certain thickness, thereby forming a coupling projection simultaneously having a coupling means for connecting two pipes together through press fitting and a packing means for sealing. Thus, when the ground is shifted by means of a natural disaster, such as the ground sinking or an earthquake, the coupling projection having high restoring force and elongation absorbs the impacts or shaking so as to stably maintain the coupled state of one pipe to another, and in addition, the manufacturing costs of the pipes is significantly reduced because a flange or a separate coupling member and packing are not required due to the coupling projection being integrally formed with the anti-corrosion paint, and construction costs can be reduced by improving constructability in the connecting of two pipes through the use of a simple press fit by means of the coupling projections integrated with the anti-corrosion paint. The present invention is provided in the form of a hollow pipe, wherein a first connecting portion is formed on one end of the pipe, and a second connecting portion is formed on the other end and has a connecting inlet portion into which the first connecting portion of another adjacent pipe is inserted and installed. The internal and external surfaces of the pipe are coated to a certain thickness with the anti-corrosion paint for preventing corrosion so as to have the generally required anti-corrosion performance. The same material as the anti-corrosion paint is continuously coated on the first connecting portion of the pipe, all the way around over the upper surface of the conventional anti-corrosion paint coated thereon, to at least the thickness of the gap occurring due to the flare for required packing performing of 0.5 mm minimum more than the certain thickness, thereby integrally forming the coupling projection. Pipes can be installed connected to each other by securing the coupling projection formed on the first connecting portion of the pipe with the second connecting portion of the adjacent pipe using the anti-corrosion paint coated thereon as an adhesive. Also, pipes can be installed connected to each other using the anti-corrosion paint as an adhesive to secure the integrally formed coupling projection of the first connecting portion of one pipe (on which the same material as the anti-corrosion paint is continuously coated all the way around over the upper surface of the conventional anti-corrosion paint coated thereon to at least the thickness of the gap occurring due to the flare for required packing performing of at least 0.5 mm more than the certain thickness) to the integrally formed coupling projection of the second connecting portion of another pipe (on which the same material as the anti-corrosion paint is continuously coated all the way around over the upper surface of the conventional anti-corrosion paint coated thereon to at least the thickness of the gap occurring due to the flare for required packing performing of at least 0.5 mm more than the certain thickness).

Description

Inner / outer anticorrosive coating and joint packing integral pipe and its joining method

The present invention relates to a pipe coated with anticorrosive coating to prevent corrosion, and more particularly, using a resin having high restoring force and elongation as the above anticorrosive paint, wherein the anticorrosive paint is transferred to the outside of one end of the pipe. The ground of a general pipe is settled or earthquake by forming a coupling protrusion having both a coupling means for connecting two pipes together by forcibly fitting the two pipes and a packing means for sealing by being integrally coated with a certain thickness required for a method and a packing role on the periphery. When the ground flows due to natural disasters, etc., it is possible to absorb shocks or shakes at the coupling projections having high resilience and elongation to maintain a stable connection state between the pipes and the pipes. An integrally formed engaging projection eliminates the need for a flange or separate coupling member and packing. As a result, the manufacturing cost of the pipe is remarkably reduced, and the inner and outer anticorrosive coating and the joint packing of the pipe can be contributing to the construction cost by improving the workability by connecting the two pipes with only the fitting protrusions. It relates to an integrated tube and a coupling method thereof.

In general, the pipes (steel pipes, fume pipes, concrete pipes, cast iron pipes) are hollow and hollow to smoothly transport fluids, gases, and powders to their destinations. There is a law.

The permanent coupling method includes a welded joint and a soldered joint, and the decomposed coupling method includes a flange coupling joint, a threaded pipe joint, an expansion joint, and a socket insertion joint, and the flange coupling joint is a disk-shaped flange on both sides of the pipe. Bolts and nuts, and screwed pipe joints are made by digging a pipe screw at the end of the pipe and using elbows, tees, branches, crosses, sockets, bands, unions, and nipples. In addition, expansion joints are used where the temperature difference is large, and there are elastic rubber joints, corrugated joints, and sliding joints and band joints.

The socket insertion joint is a pipe tap joint, which uses the flexibility of the pipe, and is used to make a receiving jaw and an inserting jaw, and is used in combination with each other, and is mainly used to connect underground buried pipes such as water, sewer or gas.

However, the above pipe joints must be flanged at the joints and drilled through a plurality of bolt holes in the flanges and joined with bolts or nuts, and other parts such as packing or gaskets are required to prevent airtightness or watertightness. Therefore, due to the difficulty of repainting the site due to the damage of the existing corrosion-resistant part of the welding part, almost all of the corrosion of the mode steel pipe occurs in the welding part.

In addition, the joint use method with a plurality of patents is a problem of the loss of fluid transfer cost and the occurrence of corrosion of the pipe end due to the vortex formation due to the disturbance of the fluid flow due to the gap between the pipe, especially inside the connection part When using many subsidiary materials, molds, etc., there is an expensive disadvantage. The inconvenience of having to install the female screw and the male screw at the distal end of the pipe and the use of a plurality of parts are exposed to the problem that the productivity of the work decreases and the work cost increases accordingly.

In order to solve the above problem, Korean Patent No. 1019500 (Registration Date: February 25, 2011) is known to have a pipe having a pipe connector and a production method thereof, but a pipe forming apparatus is used to integrate the connection part with the pipe. As the process is very complicated and takes a lot of work time, the productivity is reduced, there is a problem that the work efficiency is lowered.

In particular, the permanent coupling method, which is joined by welding, the decomposed coupling method, which is coupled by flange coupling, and the prior art, such as Patent No. 1019500, have a ground in which a pipe including a leakage preventing packing and a pipe are connected or installed with each other. When the ground flows due to natural subsidence or natural phenomenon such as earthquake, it is impossible to absorb impact or shaking, causing cracks in the welded area, or the formation of minute gaps between the flange couplings, resulting in leakage of fluid, gas, and powder. There is a serious problem that occurs, and the steel pipe of 600mm or less in diameter is generally used to develop a number of methods such as flange coupling, threaded pipe joints, but more than 600mm diameter mainly uses a permanent coupling method that is joined by welding. In this method, corrosion of almost all steel pipes is concentrated in this area due to breakage of existing corrosion-resistant parts and difficulty in repainting the site after welding the pipe joints, and this is fundamentally required due to the enormous cost of maintenance. It is a situation that requires a technology that can be solved.

According to the present invention, when the ground subsides due to perfect watertightness of joint parts of a general pipe in a state in which pipes and pipes are connected to each other or embedded, or when the ground flows due to a natural disaster such as an earthquake, the resilience and elongation may be high. It is a technical problem to be able to prevent the fluid from leaking by absorbing the shaking to maintain a stable state of the connection between the pipe and the connection between the pipe.

In addition, the present invention is a coupling protrusion formed integrally with the anti-corrosive paint to the packing action, so that the manufacturing cost and manpower of the pipes remarkably increased as a flange or a separate coupling member and packing is not required to connect the adjacent pipes to each other during the pipe manufacturing In addition to reducing and perfect watertightness, it is a technical task to improve the workability by concatenating two pipes together by the coupling protrusion to contribute to a reduction in construction cost.

The present invention is applied to the outer and inner surfaces of the pipe for transporting fluids, gases, powders, etc. to smooth the flow of the fluid, and to prevent corrosion, the anticorrosive paints such as urethane, polyurea, silicone polyurea, silicone And coating using a high elongation resin, wherein the anticorrosive paint is provided with a coupling protrusion for simultaneously connecting the two pipes on one side of the outer end of the pipe by forcibly fitting the pipes together with a packing means for sealing. The coating is integrally formed by the thickness so that the pipe and the pipe are firmly coupled to each other by the coupling protrusion.

The present invention is applied to the outer and inner surfaces of the pipe to facilitate the flow of the fluid, and to use anti-corrosive paint for high corrosion resistance and elongation to prevent corrosion, this anticorrosive paint to the outside or inside the front end of both ends of the pipe Coupling the joints of pipes and pipes together by forming a coating with a certain thickness to form a coupling protrusion to have the coupling means for connecting two pipes and the packing means for sealing at the same time. Alternatively, if the ground is submerged in the buried state or the ground flows due to natural disasters such as an earthquake, it is possible to keep the coupling state of the pipe connection part in a stable state by absorbing the impact or shaking in the highly resilient coupling protrusion. This is to prevent the phenomenon of leakage.

In addition, the present invention is a coupling protrusion formed integrally with the anti-corrosive paint to the packing action, so that the manufacturing cost and manpower of the pipes remarkably increased as a flange or a separate coupling member and packing is not required to connect the adjacent pipes to each other during the pipe manufacturing Not only can it reduce, but by connecting the two pipes to each other by forcibly fitting by the coupling projections has the effect of contributing to the reduction in construction cost by improving the construction properties.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial front cross-sectional view showing an inner / outer anticorrosive coating and a joint packing integral tube of a tube of a first embodiment according to the present invention;

Figure 2a is a partial front cross-sectional view showing the coupling before and after the inner and outer anticorrosive coating of the tube of the first embodiment according to the present invention and the coupling portion packing integral tube.

Figure 2b is a partial front cross-sectional view showing the after coupling of the inner and outer anticorrosive coating of the tube of the first embodiment according to the present invention and the coupling portion packing integral tube.

Figure 3 is a manufacturing process of the inner and outer anticorrosive coating and coupling portion packing integral tube of the first embodiment of the present invention.

Figure 4 is a manufacturing process and coupling process flow chart of the inner and outer anticorrosive coating and coupling part packing integral tube of the tube according to the present invention.

Figure 5a (a), (b) is a partial front cross-sectional view and a combined cross-sectional view showing the inner and outer anticorrosive coating and the joint packing integral tube of the second embodiment of the present invention.

Figure 5b (a), (b) is a partial front cross-sectional view and a combined cross-sectional view showing the inner and outer anticorrosive coating and the joint packing integral tube of the tube of the third embodiment according to the present invention.

Figure 5c is a partial front cross-sectional view showing the inner and outer anticorrosive coating and coupling portion packing integral tube of the tube of the fourth embodiment according to the present invention.

The present invention is provided with a hollow pipe, one end of the pipe is formed with a first connecting portion, the other end is the first inlet having a connection inlet formed by welding and expansion pipe and the like is installed the first connection of the other pipe 2 In the pipe formed with a connection, coating the anti-corrosive coating to prevent corrosion on the inner and outer surfaces of the pipe to a predetermined thickness required for the general anticorrosive performance, and the first anticorrosive coating applied to the first connection of the pipe 0.5mm or more than a certain thickness required for the continuous expansion of the coating portion is required to the thickness of the gap generated by the continuous coating to form a coupling protrusion integrally, the coupling protrusion formed in the first connection portion of the pipe adjacent to the pipe It characterized in that the pipe and the pipes are connected to each other by fixing the anti-corrosive paint coated on the inner side of the second connection portion as an adhesive. The inner diameter of the connection inflow portion in which the first connection portion is introduced is installed to be 0.5 to 3 mm smaller than the thickness of the coupling protrusion so that the airtightness is sufficiently airtight by the compression and restoring force of the resin, which serves as a method and packing in the second connection portion. It is characterized in that to maintain, and instead of forming the engaging projection on the first connection portion may be formed opposite to the coupling projection on the second connection portion, or may be formed on both the first, second connection portion.

In addition, the present invention is provided with a hollow pipe, one end of the pipe is formed with a first connection portion, the other end is formed with a second connection portion having a connection inlet for the first connection of the other adjacent pipe is installed In the piping, the surface pretreatment step of removing the foreign substances present on the inner and outer surfaces of the pipe, and applying a primer to improve the adhesion between the pipe and the anticorrosive paint, and after completion of the surface pretreatment step and the inside of the pipe. Anticorrosive coating step of coating the anticorrosive coating to prevent corrosion of the outer surface, and 0.5mm or more than the predetermined thickness when the anticorrosive coating is applied continuously, more than the gap thickness caused by the packing performance is required Coupling protrusion forming step of forming a coupling protrusion by continuous coating, and after the coupling protrusion forming step, the coupling stones formed on the first connection portion Adhesive coating step of applying an adhesive to the outer surface of the base, and after the above and the adhesive coating step, the pipe coupling step of introducing the coupling projection to the second connecting portion of the adjacent pipe, and after the pipe coupling step, the adhesive is cured It is characterized by consisting of a curing step. And in the case of the pipe does not require the anticorrosive coating step of coating the anticorrosive coating can be omitted. That is, it is characterized in that it can be used only by the packing replacement method of the connection method of the pipe.

In another embodiment of the present invention, the pipe coupling step includes installing a coupling flange having a chain block installation hole formed at one side of the pipe, and forcing the pipe and the pipe together by coupling the chain block to the chain block installation hole. It is characterized in that to improve the workability.

Hereinafter, with reference to Figures 1 to 5c attached to the pipe and the construction method of the resin having a restoring force and elongation according to the present invention coated with the anti-corrosion and packing integral type as follows.

1 is a partial front cross-sectional view showing the inner and outer anticorrosive coating of the tube of the first embodiment according to the present invention and the joint packing integral tube, Figure 2a is an inner and outer anticorrosion coating of the tube of the first embodiment according to the present invention And a partial front cross-sectional view showing the coupling before the coupling of the integral packing tube, and FIG. 2B is a partial front cross-sectional view of the internal and external anticorrosive coating and coupling of the coupling packing integral tube of the first embodiment of the present invention. to be.

That is, the pipe 1 is formed in a hollow hollow shape, one end is formed with a first connecting portion (1a) the same as the outer diameter of the pipe 1, the other end is welded, than the outer diameter of the pipe (1), A second connecting portion 1b largely formed by expansion pipe or the like is formed, and the first and second connecting portions 1a and 1b are connected to each other by introducing adjacent pipes and pipes.

The entire surface of the inner and outer sides of the pipe (1), and both end surfaces of the pipe (1) has excellent resilience and elongation to perform a packing role such as urethane, polyurea, silicon polyurea, silicon, and high tensile strength Anticorrosive coating (2) to prevent corrosion is coated to surround the pipe (1) to a certain thickness.

In particular, the outer periphery of the first connection portion (1a) of one end of the pipe (1) coated with the anticorrosive coating (2) has excellent restoring force capable of performing a packing role, such as urethane, polyurea, silicon polyurea, silicone Coupling projections 3 protruding from the same material as the strong anticorrosive paint 2 are formed.

Wherein the coupling projection (3) is formed in the pipe coating step in the anticorrosive coating coating step in consideration of the size and thickness of 0.5mm or more than a predetermined thickness when the anticorrosive coating and the packing performance is required to be more than the gap (6) thickness generated by expansion By forming the coupling protrusions 3 by continuous coating, a function capable of absorbing shock or shaking can be expected, and a higher airtightness of the pipe is formed.

In addition, the coupling protrusion 3 is coated with an arc-shaped surface in order to smoothly flow into the connection inlet 5 formed in the second connection 1b of the other adjacent pipe 1-1. Preferably, the coupling protrusion 3 is formed to have a thickness of 0.5 mm or more higher than the gap 6 of the second connecting portion 1b, which is generated by expansion, so that the coupling protrusion 3 is formed within the second connecting portion 1b. And it is desirable to be able to sufficiently maintain the airtight by the compression and restoring force of the resin serving as the packing.

Hereinafter, the composition of the anticorrosive paint forming the coupling protrusion 3 in the present invention will be described.

In the present invention, as an embodiment of the anticorrosive paint to form the bonding projection (3), it determines the elongation and tensile strength of the anticorrosive paint, and has a prepolymer solution as a curing agent, rust and waterproof at the same time, yellowing phenomenon at all It is made of a resin solution that does not occur and has a low reactivity, and thus flattening occurs during coating, and thus no embossing due to dust (dust) occurs.

The prepolymer solution is composed of 10 to 13% NCO isophorone diisocyanate 100% by weight, the prepolymer solution is a material that influences the properties such as overall hardness, weather resistance, elongation, N = C = O bond (hereinafter referred to as 'NCO') The higher the NCO content, the higher the hardness of the coating after curing, and the lower the NCO content, the lower the hardness of the coating after curing. In the rust-preventive coating of the present invention, 10 to 13% by weight NCO HDI or 10 to 13 Use wt% NCO IPDI.

The resin solution is 50 to 53% by weight of polyoxypropylene diamine to adjust the elongation and tensile strength of the coating film, 4 to 7% by weight of polyethertriamine having a molecular weight of 5,000 to adjust the curing time, crosslinking of the respective materials 12 to 14% by weight of polydiethyltoluenediamine used as a reactive additive to increase the reaction, 25 to 29% by weight of polydiphenyltriamine to control the curing time and increase elongation in the cured material properties, 1 ~ 2% by weight of the adhesion promoter which increases the adhesion to the body when the mixing is smoothly applied, and 4 ~ 5% by weight of the pigment to express the color are sequentially added to the reactor, and then maintained at a speed of 200 to 300 rpm. Prepare by homogenizing by stirring for 20-30 minutes.

In the resin solution, when the polyoxypropylene diamine for controlling the elongation and tensile strength of the coating film is added less than 50% by weight, the elongation of the coating film is lowered. When the content is added in excess of 53% by weight, the elongation and tensile strength are increased. It is preferable to add it within the range of 50 to 53% by weight since it is inferior in wear resistance.

The polyethertriamine for adjusting the curing time in the resin solution is too slow when the addition time is less than 4% by weight, the surface state of the appearance and the adhesion decreases, and when it is added more than 7% by weight, the curing time It is preferable to add in 4-7 weight% range because this surface is too fast and workability | operativity falls.

The polydiethyltoluenediamine used as a reactive additive to increase the crosslinking reaction of each material in the resin solution is less than 12% by weight when unreacted material remains, the viscosity remains on the surface, the curing reaction is slowed, When more than 14% by weight is added is higher than the hardness of the surface is required, the adhesion is reduced and the elongation is also reduced, it is preferable to add within the range of 12 to 14% by weight.

The polydiphenyltriamine, which controls the curing time and increases the elongation of the cured material in the resin solution, remains less sticky on the surface when less than 25% by weight is added. Good wear resistance is lowered, and when it exceeds 29% by weight, the curing time is fast, but durability is lowered after curing, which is easily broken or broken, so it is preferable to add within 25 to 29% by weight.

An adhesion promoter which improves adhesion in the resin solution is beta- (3,4-epoxycyclohexyl) ethyltrimethoxysilane (α- (3,4-) which is a silane coupling agent having both inorganic and organic properties. Either epoxycyclohexyl) ethyltrimethoysilane, gamma-glycidoxypropyltrimethoxysilane, or gamma-methacryloxypropyltrimethoxysilane may be used alternatively, and less than 1% by weight may be added. In this case, a decrease in adhesive force occurs, and when added in an amount of 2% by weight or more, the adhesive force increases, but wear resistance is inferior.

When the pigment expressing the color in the resin solution is added less than 4% by weight does not come out concealed, when added to 5% by weight or more it is preferable to add within 4 to 5% by weight because it causes a viscosity increase.

In another embodiment of the anticorrosive paint forming the bonding protrusions 3 in the present invention, forming a Si-O repeating unit from 20 to 30 wt% of an amino-modified silicone, and 5 to 10 wt% of a polyisocyanate Adding polyamine to the Si-O repeating unit to induce urea bond, 2 to 5 wt% vinyltrimethoxysilane, 3 to 6 wt% diphenyldimethoxysilane, and 1 to 3 wt% butyltriethoxy Adding an silane to induce an addition reaction, adding 1 to 3 wt% of zinc and methanol, reacting for a sufficient time, and removing residual methanol; and adding an acrylic resin so that the total weight is 100 wt%. It will be prepared including the step of stirring for 40 to 70 minutes at a temperature of 30 ~ 45 ℃.

In a third embodiment of the anticorrosive paint forming the bonding protrusions (3) in the present invention, the step of adding a 20-30wt% potassium silicate solution to isopropyl alcohol to form a Si-O repeating unit, 3 ~ 5wt Inducing urethane bonds by adding% isocyanate; inducing addition reaction by adding 2-5 wt% N-octyltriethoxysilane and 2-5 wt% ether trimethoxysilane; Adding 5 wt% of zinc with stirring while maintaining a temperature of 30 to 40; and adding an acrylic resin such that the total weight is 100 wt%, and stirring the mixture at a temperature of 30 to 45 ° C. for 40 to 70 minutes. It is prepared by.

As another embodiment of the anticorrosive paint forming the bonding protrusions 3 in the present invention, elongation and tensile strength are determined, and the prepolymer solution, which is a curing agent, decreases the surface tension and improves the surface fluidity. It consists of a resin solution that prevents adhesion fundamentally and significantly reduces the frictional resistance with the surface of the body.

The prepolymer solution is composed of 10wt% to 13% NCO methylene diisocyanate 100wt%, the methylene diisocyanate is a material that influences the physical properties such as overall hardness, weather resistance, elongation, N = C = O bond (hereinafter referred to as 'NCO') The higher the NCO content, the higher the hardness of the coating after curing, and the lower the NCO content, the lower the hardness of the coating after curing, and 10-13% NCO methylene diisocyanate is used.

The resin solution is a polyoxypropylene diamine 42 ~ 48wt% to adjust the elongation and tensile strength of the coating film, 8 ~ 10wt% of polyethertriamine with a molecular weight of 5,000 to adjust the curing time, gelation time of the curing properties, namely 15-20 wt% of polydiphenyltriamine to adjust the curing time and increase elongation, 8-20 wt% of reactive amino-modified silicone fluid to increase slipperiness and antifouling, and modified fluorine 0.5 ~ 10wt% of resin (Amino-modified fluorinated resin), 5 ~ 9wt% of filler to increase abrasion resistance, and 1 ~ 2wt% of adhesion enhancer to increase the adhesion between the raw materials and smooth the mixing between materials, After adding 1 ~ 2wt% of the pigment to show the color reaction tank, it is prepared by homogenizing by stirring for 20 to 30 minutes while maintaining the speed of 200 ~ 300rpm.

When the polyoxypropylene diamine for controlling the elongation and tensile strength of the coating film is added to less than 42wt% in the resin solution, the elongation of the coating film is lowered. When it exceeds 48wt%, the elongation and tensile strength are increased, but wear resistance is lowered and durability is lowered. It is preferable to add in the range of 42-48 wt% by causing.

The polyethertriamine having a molecular weight of 5,000 to adjust the curing time in the resin solution is added when less than 8wt%, the curing time is long, and when added more than 10wt%, the curing time is too fast to decrease the appearance and adhesion It is preferable to add it within the range of 8 to 10 wt% by causing the phenomenon of lowering.

In the resin solution, polydiphenyltriamine, which adjusts the curing time and increases elongation of the cured product properties, is left sticky on the surface when added to less than 15wt% due to the characteristics of the polyurea solution, and remains after the completion of curing. There is a problem that adhesion of contamination and foreign matter is well and wear resistance is deteriorated. When it exceeds 20wt%, curing time is fast but durability is lowered after hardening, so it is easily broken or broken. It is preferable to add.

Reactive modified amino silicone resin which increases the slipperiness and antifouling property in the resin solution is less than 8wt% when the slipperiness and antifouling property is lowered to prevent the adhesion of the foreign matter, when added more than 20wt% It is preferable to add within the range of 8 to 20wt%, since the interlayer adhesion is reduced and the elongation is also reduced.

When the modified fluorine resin is added in less than 0.5wt%, the slipperiness and antifouling property is reduced to prevent the adhesion of foreign matters at the base, and when it is added in excess of 10wt%, the adhesive strength between layers is lowered and the elongation is also reduced. It is preferable to add in the range of 10wt%.

Filler that increases the wear resistance in the resin solution is used nano-silicate (Nano Silicate) and when added less than 5wt% wear resistance is lowered, in the case of more than 9wt% high specific gravity will affect the reaction within the range of 5 ~ 9wt% It is preferred to add at.

Adhesion promoters that facilitate the mixing of raw materials in the resin solution and increase the adhesion to the base material are beta- (3,4-epoxycyclohexyl) ethyltrimethoxy, a silane coupling agent having both inorganic and organic properties. Silane (β- (3,4-epoxycyclohexyl) ethyltrimethoysilane), gamma-glycidoxypropyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, or any one of the above alternatively used, When the silane coupling agent is added in less than 1wt%, the adhesive force decreases, and when it is added in an amount of 2wt% or more, the adhesive force increases but wear resistance decreases.

Pigments for the color in the resin solution is added to the pigment of various colors depending on the conditions of the color, when added in less than 1wt%, the color is concealed does not appear, usually added within the range of 1 ~ 2wt% If you do, you will get the color you want.

In another embodiment of the anticorrosive paint forming the engaging projection 3 in the present invention, it has excellent tensile strength, adhesion strength, elongation rate, ultra-fast curing, high elastic modulus to improve the excellent coating workability, determine elongation and tensile strength, hardener Phosphorus ultra-fast curing agent solution, and increased erosion durability due to the increase in elasticity and elongation, and excellent wear resistance, impact resistance and scratch resistance through elongation rate and high elasticity rate, and at the same time to achieve antifouling performance by reducing surface roughness and surface energy It consists of modified silicon nano powder solution.

The ultra-fast curing agent solution is composed of 100wt% polyisocyanate (NCO group 10-25% by weight), the polyisocyanate is a material that influences the properties such as overall hardness, weather resistance, elongation, N = C = O bond (hereinafter ' NCO '), and the higher the weight% of the NCO group, the higher the hardness of the coating film after curing, and the lower the weight% of the NCO group, the lower the hardness of the coating film after curing, thereby preventing erosion and cavitation of the present invention. In the paint, polyisocyanate having an NCO group of 10 to 25% by weight is used.

The modified silicon nano-powder solution is 30 to 33 wt% of polyoxypropylene diamine for controlling elongation and tensile strength of the coating film, 8 to 10 wt% of polyethertriamine having a molecular weight of 5,000 to adjust the curing time, and gelation in the curing properties. 10 ~ 15wt% of polydiphenyltriamine to adjust the curing time and increase elongation, and 8 ~ 17wt% of reactive modified amino silicone resin to increase slipperiness and stain resistance , 2 ~ 11wt% of Amino-modified fluorinated resin, 1 ~ 2wt% of adhesion promoter to increase the adhesion between the raw materials and smoothness of application, and 1 ~ 2wt of pigment to show color % And quasi-spherical, non-oxidized ceramic particles with a diameter of 0.1 to 10 μm and specific gravity between 16 and 2, which are susceptible to wear, erosion, cavitation and erosion in corrosive media.After the 10 ~ 35wt% nano-powder for burring a reaction tank is turned on, maintaining the speed of 200 ~ 300rpm and prepared by homogenization by stirring for 20 ~ 30 minutes.

When the modified silicon nano powder solution is added to less than 30wt% polyoxypropylenediamine for controlling the elongation and tensile strength of the coating film, the elongation of the coating film is lowered, when more than 33wt% elongation and tensile strength increases but wear resistance It is preferable to add it within the range of 30-33 wt% by falling and causing durability fall.

The polyethertriamine having a molecular weight of 5,000 to adjust the curing time in the modified silicon nanopowder solution becomes long when the addition time is less than 8wt%, and when it is added 10wt% or more, the curing time becomes too fast. It is preferable to add within the range of 8 to 10 wt%, because the phenomenon of lowering and lowering of adhesion force appears.

In the modified silicon nano powder solution, polydiphenyltriamine, which controls the curing time in the cured product property and increases the elongation, remains less sticky to the surface when added to less than 10wt% due to the corrosion resistance and cavitation inhibiting paint properties of the present invention. After the completion of curing, the surface remains contaminated and adhesion of foreign matters well, and the wear resistance is deteriorated.When it is more than 15wt%, the curing time is fast while the durability after the curing is lowered, so it is easily broken or broken. It is preferable to add in the range of 10 to 15 wt% by being generated.

Reactive modified amino silicone resin that increases the slipperiness and antifouling property in the modified silicon nanopowder solution, when added to less than 8wt%, the slipperiness and antifouling property is reduced to prevent the adhesion of foreign matters, 17wt% When the excess is added, the interlayer adhesion is lowered and the elongation is also reduced, so it is preferably added within the range of 8 to 17wt%.

When the modified fluorine resin is added in less than 2wt%, the slipperiness and antifouling property is lowered to prevent the adhesion of foreign matters, and when it is added in excess of 11wt%, the adhesive strength between layers is lowered and the elongation rate is also reduced. It is preferable to add in the% range.

In the modified silicon nanopowder solution, an adhesion enhancer that smoothly mixes raw materials and increases adhesion to the base material is beta- (3,4-epoxycyclohexyl) ethyl, which is a silane coupling agent having both inorganic and organic properties. Trimethoxysilane (β- (3,4-epoxycyclohexyl) ethyltrimethoysilane), gamma-glycidoxypropyltrimethoxysilane, or gammamethacryloxypropyltrimethoxysilane When the silane coupling agent is added in less than 1wt%, the adhesive force decreases, and when it is added in an amount of 2wt% or more, the adhesive force increases, but wear resistance decreases. .

Pigment for the color in the modified silicon nano-powder solution is a pigment of various colors are added depending on the conditions of the color, but when added to less than 1wt%, the color is not concealed, usually 1 ~ 2wt% range When added in, you will get the desired color.

The nano-powder for covering the parts susceptible to abrasion, erosion, cavitation, and erosion of the modified silicon nanopowder solution that is subject to various cavitation damage is titanium, zirconium, hafnium, tantalum, niobium, tungsten, molybdenum, and boron. , One of silicon nitride and carbon nitride is used, and when added to less than 10wt%, there is a problem that the corrosion resistance is lowered. When it is added above 35wt%, the corrosion resistance is high but the adhesive strength is relatively lowered. It is preferable to add in the range of 10-35 wt%.

The nanopowders have a good surface, adhesion, and a sufficient number of particles to be impacted to maintain good density and increased hardness (2,000 HV (500 g)) or more, and the nanopowders have a semi-spherical shape. By reducing the resistance to the ultrafast curing agent solution and the modified silicon nano-powder solution together with the best to withstand the impact of cavitation.

In addition, when the modified silicon nanopowder solution is mixed with less than 100wt% with respect to 100wt% of the ultra-fast curing agent solution, there is a problem that the effect of suppressing the cavitation phenomenon is insufficient and the construction is relatively fast, resulting in poor workability. When the modified silicon nanopowder solution is mixed at 200wt% or more with respect to 100wt% of the solution, it is preferable that the modified silicon nanopowder solution is mixed at a ratio of 1: 1 to 2 because the workability is poor because curing progresses at a very slow speed. .

Referring to Figures 2a and 2b of the internal and external anticorrosive coating and coupling part packing tube of the pipe configured as described above will be described the process of connecting the pipe and the pipe to each other as follows.

First, as shown in FIG. 2A, a predetermined amount of adhesive 4 is applied to the upper surface of the coupling protrusion 3 protruding from the outer surface of the first connecting portion 1a of the pipe 1, and then the adhesive 4 is applied. If hardening is performed by flowing into the inside of the second connection portion 1b of the neighboring pipe 1-1 to be connected before hardening, the adhesive 4 acts as a lubricant (slip agent). The first connecting portion 1a of) is relatively easily introduced into the second connecting portion 1b of the adjacent pipe 1-1.

The adhesive commonly used on the upper surface of the coupling protrusion 3 uses a room temperature curing type 1 part or 2 part type surface adhesive, and the coating method is applied by a brush, a hera, a roller, and a spray.

In this case, as shown in FIG. 2B, when the first connection part 1a of the pipe 1 is completely introduced into the second connection part 1b of the neighboring pipe 1-1, the outer surface of the first connection part 1a is disposed on the outer surface of the first connection part 1a. The anti-corrosive coating (2) coated and coated on the inner surface of the second connecting portion (1b) is compressed and planarized in the connection inlet (5) formed in the second connecting portion (1b) having a protruding restoring force and elongation When the coupling protrusions 3 of the first planarized connection part 1a are brought into close contact with each other, and a predetermined time elapses in this state, the anticorrosive coating 2 coated on the inner surface of the second connection part 1b by curing the adhesive 4 is applied. ) And the coupling protrusion 3 are coupled to each other, which means that the pipe 1 and the adjacent pipe 1-1 are connected and installed.

That is, the coupling projection part 3 having the high restoring force and elongation of the same material as the anticorrosive paint 2 inserted into the connection inlet part 5 formed in the second connection part 1b of the pipe 1 is connected to the connection inlet part ( It is formed larger than the diameter of 5) and is compressed by the restoring force when it is forcibly inserted into the second connecting portion 1b, and after the compression is completed, it is expanded by its own restoring force and coated on the inner side of the second connecting portion 1b. The gap between the anticorrosive paint 2 and the coupling protrusion 3 is filled, and at the same time, the integration of the anticorrosive paint and the coupling protrusion is further increased, thereby maintaining a packing function.

As described above, the present invention absorbs shocks or shakes from the coupling protrusions having high resilience when the ground is submerged in a perfect watertight and buried state when the pipe is connected to each other, and when the ground flows due to a natural disaster such as an earthquake. The connection state of the pipe connection can be maintained in a stable state to prevent the fluid flowing through the pipe leakage.

Figure 3 is a manufacturing process diagram of the inner and outer anticorrosive coating and the joint packing integral tube of the first embodiment of the present invention, Figure 4 is an inner and outer anticorrosive coating and the joint packing integral type tube of the tube according to the present invention As a manufacturing process and a joining process flowchart, the construction process which actually connects a piping and a manufacturing process and piping and piping is as follows.

First, as shown in (a) of FIG. 3, foreign substances such as dust present on the inner and outer surfaces of the pipe (1) (1-1) such as steel pipe, fume pipe, concrete pipe, and cast iron pipe are cleanly removed, and the pipe ( 1) and the surface pretreatment step 10 of applying a primer to improve the adhesion of the anticorrosive coating (2).

When the surface pretreatment step 10 of the pipe 1 is completed as described above, as shown in FIG. 3B, the inner and outer surfaces of the pipe 1 prevent corrosion due to chemical action from the outside (2). ) To perform anticorrosive coating step 20 of coating.

The anticorrosive coating step is continuously applied to the anticorrosive coating step as the same material as the anticorrosive paint 2 on the first connection portion 1a of the pipe 1 as shown in FIG. 0.5mm or more than a certain thickness at the time of the coating performance is required by the continuous coating over the gap (6) thickness is generated by performing the coupling protrusion forming step (30) by coating the integral coating coating having a restoring force according to the present invention The pipe manufacturing process is completed.

When the coupling protrusion forming step 30 is completed, the adhesive for applying an adhesive (4) to the outer surface of the coupling protrusion (3) formed in the first connecting portion (1a) of the pipe (1) as shown in FIG. The application step 40 is performed.

When the above and the adhesive coating step 40 is completed, as shown in (e) of FIG. 3, the coupling projection part 3 coated with the adhesive 4 is introduced into the second connection part 1b of another pipe 1-1. Perform the pipe coupling step 50 to combine.

When the pipe coupling step 50 is completed, the adhesive 4 is hardened and tightly coupled to the coupling protrusion 3 of the pipe 1 and the anticorrosive paint 2 of the adjacent pipe 1-1. By performing the curing step 60, the anticorrosive paint having a restoring force and elongation according to the present invention is to complete the manufacturing process and the bonding process of the pipe coated integrally packing.

The manufacturing process and the joining process of the pipe (1) made through the various steps as described above does not require a flange or a separate coupling member and packing connecting the neighboring pipe to each other during the manufacture of the pipe, the production cost and Not only can significantly reduce the manpower, but also by connecting the two pipes to each other by forcibly fitting by the coupling projections can improve the workability to contribute to the construction cost reduction.

Figure 5a (a), (b) is a partial front cross-sectional view and a combined cross-sectional view showing the inner and outer anticorrosive coating and the joint packing integral tube of the tube of the second embodiment according to the present invention, the anticorrosive paint (2) Coated pipe (1) has the same high resilience and tensile strength as the anticorrosive paint (2), which can perform a packing role such as urethane, polyurea, silicone polyurea, and silicone on the inner wall surface of the second connection portion 1b at one end of one end. Coupling protrusion 3a protruding as a material is formed.

Figure 5b (a), (b) is a partial front cross-sectional view and a combined cross-sectional view showing the inner and outer anticorrosive coating and the joint packing integral tube of the tube of the third embodiment according to the present invention, the anticorrosive paint (2) Coated pipe (1) has excellent resilience to perform a packing role such as urethane, polyurea, silicon polyurea, and silicon on the outer circumference of the first connection part 1a at both ends and the inner wall surface of the second connection part 1b. The same material as that of the anticorrosive paint 2 having strong tensile strength is formed, and both the

protrusions

3 and 3a protruding are formed, and the second and third embodiments have the same effects and effects as the first embodiment.

FIG. 5C is a partial front cross-sectional view showing an inner / outer anticorrosive coating and a joint packing integral tube of a tube according to a fourth embodiment of the present invention, wherein one side of the pipe 1 uses a chain block to pipe 1 and pipe In order to make the connection of (1-1) easier, the coupling flange 7 in which the chain block installation hole 7a is formed is provided.

In the fourth embodiment, the pipe 1 and the pipe 1-1 in which the

coupling protrusions

3 and 3a are formed in a state in which the chain block is coupled to the chain block installation hole 7a formed in the coupling flange 7 are formed. ) Is to be combined with each other to improve the construction properties.

According to the present invention, when the ground flows due to natural disasters such as sinking or earthquake, the pipe of the general pipe absorbs shocks or shakes from the coupling protrusion having high restoring force and elongation, and keeps the coupling state between the pipe and the pipe in a stable state. In the meantime, the manufacturing cost of the pipe can be remarkably reduced as the flange or separate coupling member and packing are not required by the coupling protrusion formed integrally with the anticorrosive paint, and the two protrusions are prevented by the coupling protrusion. By connecting each other with only the fitting, it is possible to contribute to the reduction of the construction cost by improving the constructability, so there is industrial applicability.

Claims

A hollow pipe 1 is provided, and one end of the pipe 1 is formed with a first connection part 1a, and the other end is provided with a first connection part 1a of another neighboring pipe 1-1. In the pipe formed with the second connecting portion (1b) having a connection inlet (5) inlet is installed,

An anticorrosive coating (2) for preventing corrosion on the inner and outer front surfaces of the pipe (1) (1-1) is formed with a coating thickness of 0.5 ~ 3mm,

Coupling projection portion 3 of the packing function continuously coated with the same material as the anticorrosive paint (2) around the upper surface of the anticorrosive coating (2) coated on the first connection portion (1a) of the pipe (1) (1-1) ) Integrally,

The anti-corrosive paint 2 coated on the inner side of the coupling protrusion 3 formed on the first connecting portion 1a of the pipe 1 and the second connecting portion 1b of the adjacent pipe 1-1 is coated with an adhesive agent 4. Inner and outer anticorrosive coating and coupling part packing integral pipe, characterized in that connected to each other installed).
The inside and the outside of the pipe according to claim 1, wherein the coupling protrusion part 3 is formed around the upper surface of the anticorrosive paint 2 coated on the inner surface of the second connection part 1b of one end of the pipe 1. Anticorrosion coating and joint packing integral tube.
According to claim 1, wherein the engaging projection (3), the upper circumference of the upper surface of the anticorrosive coating (2) coated on the first connecting portion (1a) of the pipe (1), the second connecting portion (1b) of the pipe (1) Anti-corrosive coating (2) coated on the inner side of the inner surface of the tube, characterized in that formed at the same time around the outer surface of the inner and outer anticorrosive coating and joint packing integral tube.
According to claim 1, wherein the inner diameter of the connection inlet 5, the first connecting portion (1a) of the pipe (1) is installed is 0.5 to 3.0mm less than the thickness of the engaging projection (3) to form a first , Inner and outer anticorrosive coating of the tube and the joint packing integral type pipe, characterized in that to maintain a perfect water tightness by compression and restoring force in the second connection (1a) (1b).
The inner side of the pipe according to claim 1, wherein one side of the pipe (1) (1-1) is provided with a coupling flange (7) having a chain block mounting hole (7a) formed thereon for easier coupling. Outer anticorrosive coating and joint packing integral type pipe.
The anticorrosive coating (2) and the engaging projection (3) according to claim 1,

A prepolymer solution composed of 100% by weight of 10 to 13% NCO isophorone diisocyanate, which influences physical properties such as overall hardness, weather resistance, and elongation;

50 to 53% by weight of polyoxypropylene diamine for adjusting elongation and tensile strength of the coating film, 4 to 7% by weight of polyethertriamine having a molecular weight of 5,000 to adjust the curing time,

12 to 14% by weight of polydiethyltoluenediamine used as a reactive additive to increase the crosslinking reaction of the respective materials,

25 to 29% by weight of polydiphenyltriamine to control the curing time and increase the elongation of the cured physical properties,

1 ~ 2% by weight of adhesion promoter which smoothly mixes the raw materials and increases the adhesion to the base when applied,

The resin solution which consists of 4-5 weight% of pigments for showing a color is provided,

Inner and outer anticorrosive coating and coupling part of the tube, characterized in that the mixture of the prepolymer solution and the resin solution in a 1: 1 ratio.
The anticorrosive coating (2) and the engaging projection (3) according to claim 1,

Forming Si—O repeat units from 20 to 30 wt% amino modified silicon;

Adding 5 to 10 wt% of polyisocyanate and polyamine to the Si-O repeating unit to induce urea bonds;

Adding 2 to 5 wt% vinyltrimethoxysilane, 3 to 6 wt% diphenyldimethoxysilane and 1 to 3 wt% butyltriethoxysilane to induce the addition reaction;

Adding 1 to 3 wt% of zinc with methanol to react for a sufficient time to remove residual methanol;

An internal and external anticorrosive coating and joint packing integral tube of the tube comprising the step of adding an acrylic resin so that the total weight is 100 wt% and stirring for 40 to 70 minutes at a temperature of 30 to 45 ℃.
The anticorrosive coating (2) and the engaging projection (3) according to claim 1,

Adding 20-30 wt% potassium silicate solution to isopropyl alcohol to form a Si-O repeating unit;

Adding 3 to 5 wt% of isocyanate to induce urethane bonds;

Inducing addition reaction by adding 2-5 wt% N-octyltriethoxysilane and 2-5 wt% ether trimethoxysilane;

Adding 1-5 wt% zinc with stirring while maintaining a temperature of 30-40;

An internal and external anticorrosive coating and joint packing integral tube of the tube comprising the step of adding an acrylic resin so that the total weight is 100 wt% and stirring for 40 to 70 minutes at a temperature of 30 to 45 ℃.
The anticorrosive coating (2) and the engaging projection (3) according to claim 1,

A prepolymer solution consisting of 100 wt% of 10-13% NCO methylene diisocyanate,

42 to 48 wt% of polyoxypropylene diamine to control elongation and tensile strength of coating film, 8 to 10 wt% of polyethertriamine having molecular weight of 5,000 to adjust curing time, and polydiphenyl tree to adjust curing property and increase elongation 15-20 wt% of amines,

8-20 wt% of modified amino silicone resin to increase slipperiness and antifouling property, 0.5 to 10wt% of modified fluororesin, and 5 to 9wt% of filler to increase wear resistance,

A resin solution composed of 1 to 2 wt% of an adhesion promoter and 1 to 2 wt% of a pigment showing color, which facilitates mixing between raw materials and increases adhesion to the base,

The inner and outer anticorrosive coating and the joint packing integral tube of the tube, characterized in that the prepolymer solution and the resin solution is used in a 1: 1 ratio.
The anticorrosive coating (2) and the engaging projection (3) according to claim 1,

Ultrasonic curing agent solution consisting of 100wt% polyisocyanate having 10 to 25% by weight of NCO group,

Polyoxypropylenediamine 30 ~ 33wt%, polyethertriamine 8 ~ 10wt% with molecular weight 5,000, 10 ~ 15wt% polydiphenyltriamine, modified amino silicone resin 8 ~ 17wt%, modified fluororesin 2 ~ 11wt%, adhesion promoter Modified silicon nanocomposite consisting of 10 ~ 35wt% of any one nanopowder selected from 1 ~ 2wt%, 1 ~ 2wt% pigment, titanium, zirconium, hafnium, tantalum, niobium, tungsten, molybdenum, boron, silicon nitride, carbon nitride Powder solution is provided,

The inner and outer anticorrosive coating and the joint packing integral tube of the tube, characterized in that the mixture of the ultra-fast curing agent solution and the modified silicon nanopowder solution in a ratio of 1: 1 to 2.
In the pipe of the hollow form, one end of the pipe is formed with a first connecting portion, the other end is a pipe with a second connecting portion having a connection inlet for the first connection of the other adjacent pipe is installed,

A surface pretreatment step 10 for removing foreign substances present on the inner and outer surfaces of the pipe and applying a primer to improve adhesion between the pipe and the anticorrosive paint;

After completion of the surface pretreatment step 10 and the anticorrosive coating step (20) to coat the anticorrosive paint to prevent corrosion of the inner and outer surfaces of the pipe,

After the anticorrosive coating step (20), forming a coupling protrusion forming a coupling protrusion having a packing function continuously made of the same material as the anticorrosive paint on both the first connecting portion or the second connecting portion or the first and second connecting portions ( 30) and,

After the coupling protrusion forming step 30, the adhesive coating step 40 for applying an adhesive to the outer surface of the coupling protrusion,

After the adhesive coating step 40, the pipe coupling step 50 for coupling the coupling projection to the connection of the adjacent pipe,

After the pipe coupling step (50), the internal and external anticorrosive coating and coupling portion of the tube integrally packed method characterized in that it comprises a curing step (60) for curing the adhesive.
According to claim 11, The pipe coupling step 50,

Inside the pipe, characterized in that the coupling flange is formed on one side of the pipe is installed, the coupling block is installed in the state in which the chain block and the pipe block is coupled to each other in the state in which the chain block installation hole is coupled to the chain block installation hole. · Coupling method of external anticorrosive coating and joint packing integral type pipe.