KR101749614B1 - Excellent Heat Insulating Polyurethane Foam Board and Method of Producing the Same - Google Patents

Abstract

The present invention provides a method for producing a polyurethane foam board.
The present invention relates to a method for producing a polyester resin composition, which comprises 100 parts by weight of a polyester polyol, 10 to 30 parts by weight of a flame retardant, 1.5 to 10 parts by weight of a catalyst, 2 to 5 parts by weight of a foaming agent and 1.5 to 5.0 NL / A first mixing step; A second mixing step of adding 15 to 40 parts by weight of cyclopropane as a blowing agent to 115 to 150 parts by weight of the primary mixture at a high pressure to obtain a second mixture; 130 to 190 parts by weight of the second mixture and 200 to 300 parts by weight of Polymeric MDi-I at a high pressure into a mixing head to form a third mixture; A double conveyor step of sending the tertiary mixture to an injection nozzle coupled to a mixing head and injecting the mixture to the outside to form a polyurethane foam together with a polyurethane reaction; The method comprising the steps of: preparing a polyurethane foam board;

Description

FIELD OF THE INVENTION [0001] The present invention relates to a polyurethane foam board having excellent flame retardancy and a method of manufacturing the same. More particularly,

The present invention relates to a polyurethane foam board having excellent flame retardancy and a process for producing the polyurethane foam board. More particularly, the present invention relates to an environmentally friendly foaming agent free from ozone layer destruction and to solve the problem of insufficient heat insulation and insolubility to polyol, To a polyurethane foam board having excellent flame retardant performance and a manufacturing method thereof.

Generally, Rigid Polyurethane Foam is widely used for refrigerator, freezing container, LNG insulator, building insulation, insulating material, and other ornaments because it is lightweight, has excellent heat insulation, and has excellent soundproofing and molding processability. Rigid polyurethane foam is mainly used as a heat insulating material, and when it is used as an interior material of a building, it requires high flame retardancy.

In order to improve the flame retardancy of the rigid polyurethane foam, it is most important that the polymeric MDI is used as the isocyanate material and the aromatic ester polyol composition liquid is used as the polyol raw material. When a polymeric MDI and an aromatic ester polyol are reacted to form a polyurethane product, a rigid urethane foam having excellent flame retardancy can be produced.

However, HCFC-141b can no longer be used as a conventional blowing agent due to global warming, and cyclopentane is used as a substitute material thereof. However, there is a serious problem in manufacturing a polyurethane product having good flame retardancy .

Conventional foaming agent HCFC-141b has been widely used in the field of the production of rigid urethane foam because it has excellent foaming performance of polyurethane and has excellent heat insulating properties of hard urethane foam obtained after foaming. These conventional foaming agents, HCFC-141b, are exposed to the atmosphere and are now regarded as substances that cause ozone depletion and global warming, and their use is gradually being prohibited by international treaties such as the Montreal Convention. ought.

On the other hand, Cyclopentane, which does not cause serious problems such as global warming, is used as a blowing agent even when exposed to the atmosphere, in contrast to the conventional blowing agent HCFC-141b.

However, when cyclopentane is used as a blowing agent, there are problems in that various physical properties including heat insulation and flame retardancy of the hard urethane foam are lowered.

In the technical field of the refrigerator insulation material in which the rigid urethane foam is used merely as a heat insulating material and the technical field of the automobile interior material, it is sufficient that only the heat insulating performance can be improved without considering flame retardant performance. Therefore, To solve these problems.

On the other hand, in the technical field related to the interior materials of buildings, since polyurethane products require high flame retardant performance in addition to heat insulating performance, there are problems that are more complicated and difficult to solve. This problem can be summarized as the fact that it is necessary to ensure a high flame retardancy besides the heat insulating performance in polyurethane products.

DISCLOSURE OF THE INVENTION The inventors of the present invention, in response to such a problem, have analyzed this method in various manners regarding a conventional method of producing a polyurethane foam, and the results are as follows.

In the production of rigid polyurethane foam boards, first, the use of cyclopentane, which is an environmentally friendly blowing agent, can not be abandoned, and cyclopentane must be used as a blowing agent. This does not mean that companies can not fulfill their corporate social responsibilities under domestic and foreign legal regulations unless they produce eco-friendly products, and they can not be welcomed in the market from a long-term perspective. Second, by using cyclopentane as a blowing agent, the flame retardancy of a polyurethane product can not be deteriorated. To compensate for such a decrease in flame retardancy, an aromatic ester polyol having excellent flame retardancy should be used. Thirdly, cyclopentane is used as a foaming agent for environmentally friendly products, and aromatic ester polyol is used for improving flame retardancy. However, since cyclopentane is hardly dissolved in the aromatic ester polyol in practice, Which is difficult to produce. In addition, the aromatic ester polyol has a primary hydroxyl group at the terminal thereof, so that it is difficult to suitably use catalysts that have a higher reactivity than PPG and improve curability due to quick reactivity. If the catalysts can not be used properly, the final product of the rigid urethane foam board will cause problems with product quality such as shrinkage, warpage, and adhesion.

As a result, at the present state of the art, the problem of insolubility existing between the cyclopentane and the aromatic ester polyol and the problem caused by the quick reactivity of the aromatic ester polyol are not solved. As a result, the aromatic ester polyol It is necessary to minimize the use amount of the flame retardant, and thus the flame retardancy can not be improved.

The conventional method of manufacturing a rigid polyurethane foam and the manufacturing apparatus thereof will be described below.

Korean Patent No. 10-465384 entitled "Manufacturing Process System of Flame Retardant Insulating Panels" (December 29, 2004); Korean Patent Publication No. 2010-100951 entitled "Method for producing rigid polyurethane foam" (Sep. 15, 2010); Korean Patent No. 10-1311473 entitled " Urethane Foam Production Apparatus and Urethane Foam Production Method "(Feb. Korean Patent Laid-Open Publication No. 2016-95227 "Method for producing polyurethane using homogenizer" (Aug. 11, 2016); Korean Patent Laid-Open Publication No. 2016-95228 entitled "Polyurethane Manufacturing Method for Dispersing and Mixing Nitrogen in Polyol" (Aug. 11, 2016); Korean Patent Laid-Open Publication No. 2016-95229 "Method for producing polyurethane using nitrogen adsorbed adsorbent" (Aug. 11, 2016); Korean Patent No. 10-1612296 entitled " Device for manufacturing polyurethane foam board having excellent heat insulation "(Apr. 7, 2016)

Disclosure of Invention Technical Problem [8] The present invention has been made to solve all the problems of the prior art described above, and it is an object of the present invention to solve the problems of deterioration of physical properties and insolubility to polyol due to environmentally friendly foaming agents while using cyclopentane which is an environmentally friendly foaming agent without ozone layer destruction, And an object of the present invention is to provide an excellent polyurethane foam board and a manufacturing method thereof.

In order to achieve the above object, the present invention provides a process for producing a polyester polyol, which comprises mixing 100 parts by weight of a polyester polyol, 10 to 30 parts by weight of a flame retardant, 1.5 to 10 parts by weight of a catalyst, 2 to 5 parts by weight of a foaming agent and 1.5 to 5.0 NL / To obtain a first mixture; A second mixing step of adding 15 to 40 parts by weight of cyclopropane as a blowing agent to 115 to 150 parts by weight of the primary mixture at a high pressure to obtain a second mixture; 130 to 190 parts by weight of the second mixture and 200 to 300 parts by weight of Polymeric MDi-I at a high pressure into a mixing head to form a third mixture; A double conveyor step of sending the tertiary mixture to an injection nozzle coupled to a mixing head and injecting the mixture to the outside to form a polyurethane foam together with a polyurethane reaction; The present invention also provides a method for producing a polyurethane foam board having excellent flame retardancy.

Wherein the first mixing step comprises feeding the polyester polyol raw material up to a low pressure of 2.5-5.0 bar in a feed line and again elevated to a high pressure of 100-180 bar; The flame retardant component and the foam stabilizer are raised in the supply pipe at a low pressure of 2.5 to 5.0 bar and then raised to a high pressure of 100 to 180 bar and supplied; The catalyst component is raised in the feed pipe at a low pressure of 2.5 to 5.0 bar and further raised to a high pressure of 100 to 180 bar and supplied; Nitrogen gas of 1.0 to 5.0 NL / MIN is supplied at a high pressure of 220 to 270 bar, and these are all introduced into the inlet of the high-speed mixer and mixed in the first half of the high-speed mixer.

In the second mixing step, the primary mixture is fed to the inlet of the high-speed mixer, and the cyclopentane component as the foaming agent is raised to a low pressure of 2.5 to 5.0 bar in the feed pipe while mixing at a high speed within the inlet, It is preferable to supply the mixture to the intermediate inlet of the high-speed mixer. In this case, the cyclopentane component means that the foaming agent component is further mixed with 3 to 5 components already mixed in the high-speed mixer. The components from the high-speed mixer form a secondary mixture comprising cyclopentane.

In the third mixing step, the polymeric MDi component supplied at a high pressure from the isocyanate tank is raised to a low pressure of 2.5-5.0 bar in the supply pipe, and further raised to a high pressure of 100-180 bar, And the secondary mixture supplied from the high-speed mixer at a high pressure of 100 to 180 bar is injected at a high speed into the other inlet of the mixing head.

In the third mixing step, the polymeric MDI components injected at high speed into both the inlet ports of the mixing head and the secondary mixture are confronted with each other in front of each other, so that kinetic energy of the raw material components on both sides are changed into collision energy, The components are vigorously mixed with each other, and the raw ingredients sufficiently mixed due to the remaining energy of the remaining components move to the nozzle portion coupled to the mixing head.

The present invention also provides a rigid polyurethane foam board produced by the above-mentioned manufacturing method.

The present invention also provides an apparatus for manufacturing a rigid polyurethane foam board suitable for the above-mentioned manufacturing method.

An apparatus for producing a rigid polyurethane foam board according to the present invention comprises an isocyanate tank for storing a polymeric MDI raw material and supplying the polymeric MDI raw material to a mixing head at a high pressure in order to cause a urethane reaction; A polyol tank capable of storing a polyol raw material and supplying the raw material of polyol to the inlet of the high-speed mixer at a high pressure; A catalyst tank for storing a catalyst for promoting the urethane reaction and supplying the catalyst to the inlet of the high-speed mixer at a high pressure; An additive tank for storing an additive which stably performs the urethane reaction and gives the required performance to the foam, and supplies the additive at a high pressure to the inlet of the high-speed mixer; A nitrogen supplier for storing liquid nitrogen and supplying the liquid nitrogen to the inlet of the high-speed mixer at a high pressure; A blowing agent feeder for storing cyclopentane as a blowing agent and feeding the cyclopentane to a middle inlet of a high-speed mixer at a high pressure; A high-speed mixer in which the polyol, the additive, the catalyst and the nitrogen are supplied from the inlet of the mixer, the mixture is firstly mixed, the pentane is supplied from the blowing agent cycle to the second mixer, Wow; The raw material of polymeric MDi supplied at high pressure in the isocyanate tank and the secondary mixture supplied at high speed in the high-speed mixer are brought into contact with each other so that the kinetic energy of the polymeric MDi raw material and the motion of the secondary mixture A mixing head in which energy is changed into impact energy so that raw material components on both sides are vigorously mixed and then discharged to the outside; .

The method for producing a polyurethane foam board according to the present invention has an advantage of realizing an optimal condition for overcoming the insolubility of cyclopentane, while using cyclopentane which is insoluble in insoluble polyol component.

In addition, since the method for producing a polyurethane foam board according to the present invention allows a polyester polyol component having excellent flame retardancy to be fully used and used, it is advantageous that the finally obtained polyurethane foam board has a greatly improved flame retardancy .

In addition, the polyurethane foam board completed by the present invention is produced by using cyclopentane as a foaming agent, but using it continuously, so that it can receive the spotlight as an eco-friendly material.

In addition, the polyurethane foam board completed by the present invention has an advantage that flame retardancy is remarkably improved to such an extent that flame retardant performance can exhibit quasi-flammability while using cyclopentane as a foaming agent.

Further, the apparatus for producing a polyurethane foam board according to the present invention is advantageous for a continuous production process, not an intermittent type, while using cyclopentane as a foaming agent, and thus has an advantage in mass production of an environmentally friendly polyurethane foam board product will be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing an apparatus for manufacturing a main portion and an overall process of a manufacturing method of a polyurethane foam board of the present invention,
2 is a schematic configuration diagram of a high-speed mixer of the present invention,
3 is a sectional photograph of the polyurethane foam board manufactured in Example 4,
4 is a sectional photograph of the polyurethane foam board manufactured in Example 5,
5 is a sectional photograph of the polyurethane foam board manufactured by Comparative Example 2,
6 is a sectional photograph of the polyurethane foam board manufactured by Comparative Example 4,
7 is a sectional photograph of the polyurethane foam board manufactured in Example 8,
8 is a sectional photograph of the polyurethane foam board manufactured in Example 9,
9 is a sectional photograph of the polyurethane foam board manufactured by Comparative Example 6,
10 is a sectional photograph of the polyurethane foam board manufactured by Comparative Example 10,
11A and 11B are copies of a test report on the flame retardant performance test of the polyurethane foam board produced in Example 4. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that the accompanying drawings are only for explaining the technical idea of the present invention in detail and that the technical idea of the present invention is not limited thereto and that various modifications are possible. In the description of the present invention, the same reference numerals are used for the same parts, and parts that can be easily created by those having ordinary skill in the art are omitted in the description of the present invention .

Manufacturing method of polyurethane foam board

The present invention provides a method for producing a polyurethane foam board having excellent flame retardancy. INDUSTRIAL APPLICABILITY The present invention makes it possible to produce a polyurethane foam board having good reactivity and excellent flame retardancy while using cyclopentane which is not soluble in a polyol component as a foaming agent.

The present invention provides a rigid polyurethane foam board using a polyester polyol and various additives, cyclopentane and polymeric MDI as blowing agents. The present invention has a technical feature in that nitrogen gas is used to solve the problem of the insolubility of the cyclopentane to the polyester polyol.

The present invention relates to a method for producing a polyester resin composition, which comprises 100 parts by weight of a polyester polyol, 10 to 30 parts by weight of a flame retardant, 1.5 to 10 parts by weight of a catalyst and 2 to 5 parts by weight of a foaming agent, / MIN to the high-speed mixer 170 at a high pressure to obtain a first mixture.

The polyester polyol is supplied from the polyol tank 120, and the present invention will be described based on 100 parts by weight of the polyol for convenience of explanation. The polyester polyol is supplied at a high pressure. At the beginning of the operation, the polyester polyol is supplied to the mixing head 180 to be recycled and circulated. On the other hand, when the manufacturing method of the present invention is performed, ). In the high-speed mixer 170, as shown below, the mixture is mixed with various additives to form a primary mixture, which is mixed with a foaming agent to form a secondary mixture. The polyester polyol is preferably an aromatic polyester polyol.

The flame retardant is used to improve the flame retardant performance of a polyurethane foam board which is a foam, and it is used in an amount of 10 to 30 parts by weight based on 100 parts by weight of the total polyol. The flame retardant will form a primary mixture with a portion of the polyol and additives and nitrogen. Examples of the flame retardant include halogen flame retardants such as tris (2-chloropropyl) phosphate, tris (20 chloroethyl) phosphate and chlorinated paraffin, phosphorus flame retardants such as triethyl phosphate, and nitrogen flame retardants such as melamine cyanurate.

The catalyst is used to induce a rapid reaction in the urethane reaction, and 1.5 to 10 parts by weight is used relative to 100 parts by weight of the total polyol. The catalyst may be used as a single drug, but a plurality of different drugs may be used. When a plurality of catalysts are used, it is advantageous to obtain a stable reaction under a variety of conditions. Therefore, it is preferable to use a plurality of catalysts rather than a single catalyst. Examples of the catalyst include an amine catalyst such as triethylenediamine, dimethylethanolamine, tetramethylbutanediamine, dimethylcyclohexylamine, triethylamine, pentamethyldiethylenetriamine, and tris [3- (dimethylamino) propyl] hexahydrotriazine , Dibutyltin dilaurate, potassium octoate, dibutyltin dimercapride, stannous octoate and the like can be used. When the catalyst is used in an amount of not more than 1.5 parts by weight, the urethane reaction proceeds slowly, which is undesirable. When the catalyst is used in an amount of more than 10 parts by weight, the urethane reaction proceeds too fast.

The foam stabilizer is used to induce the uniformity of reactants during the urethane reaction and to stabilize the cell. As the foam stabilizer, silicone foam stabilizers such as silicone glycol copolymer and polysiloxane ether, and non-silicone foam stabilizers such as vinyl-2-pyrrolidone can be used. When the foam stabilizer is used in an amount of 2 parts by weight or less based on 100 parts by weight of the total polyol, the uniformity of the reactants is lowered and the size of the cells is increased. As a result, the physical properties and heat insulating properties of the final product are deteriorated, Or more, the cell of the foam may be excessively opened and contracted, which is not preferable.

The nitrogen (N2) gas is used to improve the contact area of various additives by finely dividing and bubbling the various liquid additives in the high-speed mixer 170 to be mixed at high pressure. The nitrogen gas mixes with various additives in the high-speed mixer 170 to change the liquid-phase additives in the high-speed mixer 170 into bubbles, thereby making a crucial contribution to obtaining the first mixture, 170) to the bubbling of the cyclopentane coming through the intermediate inlet of the reactor.

The nitrogen (N2) gas is preferably used at a low temperature, particularly at a low temperature of 4 DEG C or lower. The reason for this is as follows. A large amount of catalyst is used for the polyurethane reaction. The higher the amount of the catalyst used, the better the curability. Therefore, it is required to lower the temperature of the reactant as much as possible. On the other hand, if the temperature of the polyol, the catalyst, or the foam stabilizer is lowered in the reactants, the process of transferring through the pipeline is not smooth and it is difficult to expect a smooth mixing operation. In this respect, lowering the temperature of the feedstock is limited. In addition, when air is used, the temperature of the air in the atmosphere is influenced by the seasons of the seasons, and furthermore, the temperature is around 30 ° C in the same period as in the summer, It has a disadvantage that it must be used in a low level. On the contrary, when the nitrogen (N2) gas is used, the temperature of the liquid nitrogen can be freely lowered, so that there is an advantage that it is not affected by the atmospheric temperature at all. The supply temperature of the nitrogen (N2) gas is preferably a low temperature state of 4 DEG C or lower, more preferably about 0 DEG C.

The nitrogen (N2) gas is preferably supplied to the high-speed mixer 170 at an ultra-high pressure of 220 to 270 bars at a rate of 1.5 to 5.0 NL / MIN. It is preferable to use a booster device for raising the nitrogen gas at an ultra-high pressure. In addition, when the nitrogen gas is supplied at a rate of 1.5 NL / MIN or less, the bubbles can not be formed in a sufficient degree. Therefore, when the amount of the nitrogen gas is 5.0 NL / MIN or more, the product density becomes too low. The shrinkage phenomenon occurs, which is not preferable.

In the course of performing the first mixing step, each component should be supplied or injected at a high pressure. To this end, the polyester polyol raw material is raised in the second supply pipe 122 to a low pressure of 2.5 to 5.0 bar by the low-pressure pump P1 and then raised to a high pressure of 100 to 180 bar in the high- It is good to do. It is preferable that the flame retardant and the foam stabilizer are raised in the third supply pipe 132 by the low pressure pump P1 to a low pressure of 2.5 to 5.0 bar and then raised by the high pressure pump P2 to a high pressure of 100 to 180 bar. It is preferable that the catalyst component is raised to a low pressure of 2.5 to 5.0 bar in the low pressure pump P1 while passing through the fourth supply pipe 142 and then raised to a high pressure of 100 to 180 bar in the high pressure pump P2 . It is preferable that the nitrogen gas is supplied at 1.5 to 5.0 NL / MIN at an ultra-high pressure of 220 to 270 bar, and they are all put into the inlet of the high-speed mixer 170 and mixed in the first half of the high- It is preferable to first raise the pressure in the low-pressure pump, then increase the pressure to 100-180 bar using a booster device and a high-pressure pump, or increase the pressure to 220-270 bar.

In the present invention, 115 to 150 parts by weight of the primary mixture are uniformly mixed in the high-speed mixer 170, 15 to 40 parts by weight of cyclopentane as a foaming agent is additionally supplied, And a mixing step.

In the second mixing step, the primary mixture is supplied to the inlet 177 of the high-speed mixer 170, and the cyclopentane component, which is a foaming agent, is supplied to the sixth supply pipe 162 at a rate of 2.5 - It is preferable to raise the pressure of the high-pressure mixer 170 to a low pressure of 5.0 bar and then raise it to a high pressure of 100 to 180 bar, and supply it to the intermediate inlet 178 of the high- In this case, the cyclopentane component is further mixed with 3 to 5 components already in the high-speed mixer 170, and the additional component is further mixed, and the cyclopentane component is mixed with the cyclopentane .

2, there are a plurality of honeycomb structures 172 that interfere with the flow of the fluid and disperse the flow direction inside the high-speed mixer 170, and a plurality of honeycomb structures 172 formed between the honeycomb structures It is desirable to form transfer passages 174 and allow the primary mixture to mix with each other as it rapidly flows between the pelletized transfer passages 174. The cyclic pentane is preferably mixed at a high speed through the intermediate inlet 178 of the high-speed mixer 170 after the primary mixture is mixed to some extent inside the high-speed mixer 170. Since the blowing agent cyclopentane itself is a gaseous component, it is not necessary to inject it into the high-speed mixer 170 from the beginning like other additives. When the blowing agent pentane is added in an amount of not more than 15 parts by weight, the foaming performance is not exhibited properly. On the other hand, when the blowing agent is added in an amount of more than 40 parts by weight, the quality is deteriorated due to excessive foaming.

When the primary mixture and the blowing agent cyclopentane are uniformly mixed in the high-speed mixer 170, a secondary mixture is produced, and the secondary mixture is discharged to the outside through the high-speed mixer 170. Accordingly, a primary mixture is obtained in the first half of the high-speed mixer 170, and a secondary mixture is obtained in the latter half of the high-speed mixer 170. The secondary mixture thus obtained is in a suspended state by the above-mentioned nitrogen gas, which is observed as a crumbly formed cream type. This is because the oil type cyclopentane component is uniformly mixed with the aqueous polyol component, the foam stabilizer component, the flame retardant component and the catalyst component, and the nitrogen gas is mixed in the high-speed mixer 170 Which means that they were directly involved in their mixing.

The present invention includes a third mixing step in which 130-190 parts by weight of the secondary mixture and 200-300 parts by weight of polymeric MDI are charged into the mixing head 180 at a high pressure to form a tertiary mixture.

The secondary mixture is obtained through the above-mentioned high-speed mixer 170 and means a mixture in the form of a bubble. The bubble-like mixture is an apparently cloudy cream type and refers to a mixture in suspension.

The polymeric MDI is supplied from an isocyanate tank 110 and is one of the basic raw materials for reacting with the polyol component to form a polyurethane. When the polymeric MDI is mixed in an amount of 200 parts by weight or less, a sufficient degree of flame retardancy is not exhibited. On the other hand, when 300 parts by weight or more of the polymer is mixed with the polymeric MDI, the foam is easily broken and adherence is deteriorated.

In the third mixing step, the polymeric MDi component is raised from the first supply pipe 112 to a low pressure of 2.5-5.0 bar, and further raised to a high pressure of 100-180 bar to the left inlet of the mixing head 180 It is preferable to feed the mixture at a high speed into the right inlet of the mixing head 180 while maintaining the secondary mixture at a high pressure of 100 to 180 bar.

In the third mixing step, the secondary mixture and the polymeric MDI are mixed with each other at a high speed through the mixing head 180. More specifically, the polymeric MDI is injected at a high speed from the lower left end of the mixing head 180 to the right, and the secondary mixture is injected at a higher speed in the left direction from the lower right end of the mixing head 180 . At this time, the polymeric MDI and the secondary mixture are confronted to each other and collide with each other. In this case, since the kinetic energy of the polymeric MDi and the kinetic energy of the secondary mixture collide with each other in opposite directions, they are vigorously kneaded, and the remaining energy remaining in the kneading process by the impact is the third The mixture is rapidly discharged to the injection nozzle 182 coupled to the outlet of the mixing head 180.

The present invention is a method for forming a polyurethane foam board for forming a polyurethane foam together with a polyurethane reaction by sending the tertiary mixture to an injection nozzle 182 coupled to a mixing head 180 and injecting the same through a nozzle .

The formation of the polyurethane foam board proceeds in a conventional manner. The polyurethane foam board is formed by a so-called double conveyor belt apparatus (not shown) while causing the urethane reaction in the tertiary mixture injected from the injection nozzle 182, Is completed. Such steps are merely ordinary in this technical field, and detailed description will be omitted.

The obtained Semi-incombustible  Polyurethane foam board

The present invention relates to a process for producing a rigid polyurethane foam board by obtaining a primary mixture, a secondary mixture and a tertiary mixture in the manner as described above and appropriately proceeding to respective process conditions, do.

The rigid polyurethane foam board produced by the production method of the present invention has good heat insulation, excellent flame retardancy, and semi-flammability.

Semi-incombustible  Manufacturing apparatus for polyurethane foam board

In addition, the present invention can be manufactured using the apparatus 100 for manufacturing a rigid polyurethane foam board suitable for the above-mentioned manufacturing method.

An apparatus 100 for manufacturing a rigid polyurethane foam board according to the present invention includes an isocyanate tank 110 storing a polymeric MDI raw material. The isocyanate tank 110 supplies the polymeric MDi raw material to the mixing head 180 at a high pressure to cause a urethane reaction therein.

The isocyanate tank 110 supplies the polymeric raw material to the mixing head 180 at a high pressure through the first supply pipe 112. The first supply pipe 112 is raised to a low pressure of 2.5 to 5.0 bar A high pressure pump P2 for increasing the pressure of the low pressure pump P1 to a high pressure of 100 to 180 bar and a flow meter F1 for measuring the supply amount of the polymeric IMD raw material flowing at a high pressure. 112 are connected to the lower left inlet of the mixing head 180.

Since the isocyanate tank 110 supplies the polymeric raw material to the mixing head 180 at a high pressure, it is necessary to connect the first collection pipe 114 to the mixing head 180. One end of the first recovery pipe 114 is connected to the mixing head 180 and the other end of the first recovery pipe 114 is connected to the isocyanate tank 110. A three- To the isocyanate tank (110) or the first supply pipe (112).

An apparatus 100 for manufacturing a rigid polyurethane foam board according to the present invention includes a polyol tank 120 storing a polyol raw material.

The polyol tank 120 supplies the polyol raw material through the second supply pipe 122 at a high pressure. The second supply pipe 122 is provided with a low-pressure pump P1 for raising the pressure to 2.5 to 5.0 bar, and a flow meter F1 for measuring the supply amount of the polyol raw material flowing at a high pressure are provided. The second supply pipe 122 is branched, one of which is connected to the input port of the lower right end of the mixing head 180, the other of which is connected to the inlet portion 177 of the high-speed mixer 170 .

Since the polyol tank 120 supplies the polyol raw material to the mixing head 180 at a high pressure, it is also necessary to use the second recovery pipe 124 connected thereto. One end of the second recovery pipe 124 is connected to the mixing head 180 and the other end of the second recovery pipe 124 is connected to the polyol tank 120. A three- To be connected to the polyol tank (120) or the supply pipe (124).

The polyol tank 120 is branched and supplies a polyol raw material to the high-speed mixer 170 at a high pressure. In the high-speed mixer 170, various additives are mixed with nitrogen gas to form a bubble- The primary mixture is further mixed with the foaming agent, and then the secondary mixture is formed, and the secondary mixture is introduced into the mixing head 180.

The polyol tank 120 may use a polyester polyol raw material or a polyether polyol raw material depending on the product of the polyurethane foam board to be finally produced. In general, the polyester polyol raw materials are mainly used for producing flame retardant products, while the polyether polyol raw materials are mainly used for producing general products. The present invention relates to a technique for producing a flame retarded product using a polyester polyol raw material, but it can also be used at the same time. The polyol tank 120 may be constituted individually according to the polyol raw material used. 1, each of the polyol tanks 120 and 120 'is illustrated.

An apparatus 100 for manufacturing rigid polyurethane foam boards according to the present invention includes a catalyst tank 130 for storing and supplying a catalyst for promoting urethane reaction between an isocyanate component and a polyol component.

The catalyst tank 130 safely stores a catalyst or a plurality of catalysts and a catalyst for promoting the urethane reaction between the isocyanate component and the polyol component is introduced into the inlet portion 177 of the high-speed mixer 170 through the third supply pipe 132 Supply. In general, the catalyst stored in the catalyst tank is supplied to the mixing head to allow the urethane reaction to proceed there. In contrast, in the present invention, since the catalyst of the catalyst tank 130 is supplied to the high-speed mixer 170, . The catalyst tank 120 is connected to a third supply pipe 132 for supplying the catalyst at a high pressure. In the third supply pipe 132, a low pressure pump P1 for raising the catalyst to a low pressure of 2.5 to 5.0 bar, a high pressure pump P2 for raising the pressure to 100 to 180 bar and a supply amount of a catalyst flowing at a high pressure are measured A flow meter F1 is provided. The catalyst supplied through the flowmeter F1 is introduced into the inlet 177 of the high-speed mixer 170.

An apparatus 100 for manufacturing rigid polyurethane foam boards according to the present invention includes an additive tank 140 for storing and supplying an additive that stably performs urethane reaction and imparts necessary performance to the foam.

The additive tank 140 stably stores the flame retardant and various additives necessary for stabilizing the various raw material components before the urethane reaction and for improving the flame retardancy of the polyurethane foam board after the urethane reaction, To the inlet portion 177 of the high-speed mixer 170 through the first passage 142. Typically, the additive is supplied to a mixing head in which the polyol component and the isocyanate component are mixed with each other. However, in the present invention, in order to supply various additives of the additive tank 140 to the high-speed mixer 170, . The additive tank 140 is connected to a fourth supply pipe 142 for supplying the additive at a high pressure. A low pressure pump P1 for raising the additive to a low pressure of 2.5 to 5.0 bar and a high pressure pump P2 for raising the additive to a high pressure of 100 to 180 bar and a supply amount of a catalyst flowing at a high pressure are measured in the fourth supply pipe 142 A flow meter F1 is provided. The additive supplied through the flowmeter F1 is introduced into the inlet 177 of the high-speed mixer 170. [

The apparatus 100 for manufacturing rigid polyurethane foam boards according to the present invention includes a nitrogen supplier 150 for storing liquid nitrogen and supplying the liquid nitrogen to the inlet of the high-speed mixer 170 at a high pressure.

The nitrogen feeder 150 includes liquefied nitrogen and is supplied with nitrogen at a high speed to uniformly knead the polyol component, the catalyst, and the various additives described above, thereby obtaining a bubble- . The nitrogen supply unit 150 is connected to a fifth supply pipe 152 for supplying nitrogen at a high pressure. A second low pressure pump P3 for raising the nitrogen to a low pressure of 7 to 15 bar and an ultra high pressure pump P4 for raising the nitrogen to an ultra high pressure of 220 to 270 bar and a nitrogen gas And a flow meter F1 for measuring the supply amount is provided. The nitrogen gas is supplied in the range of 1.5 to 5.0 NL / Min and is preferably introduced into the inlet 177 of the high-speed mixer 170. The nitrogen gas introduced into the inlet 177 of the high-speed mixer 170 is mixed with the polyol component, the flame retardant, the foam stabilizer and the catalyst to form a bubble-like primary mixture, which is further mixed with the foaming agent, To form a mixture.

An apparatus 100 for manufacturing rigid polyurethane foam boards according to the present invention includes a blowing agent feeder 160 for storing or supplying cyclopentane as a blowing agent.

The blowing agent feeder 160 needs to keep the cyclopentane stored at a high pressure in a stable state. The blowing agent feeder 160 is connected to a sixth feed pipe 162 for feeding cyclopentane as a blowing agent at a high pressure. A low pressure pump P1 for raising the cyclopentane to a low pressure of 2.5 to 5.0 bar and a high pressure pump P2 for raising the cyclone pentane to a high pressure of 100 to 180 bar and a cyclopentane feed rate And a flowmeter F1 for measuring the flow rate of the fluid. The additive supplied through the flowmeter F1 is introduced into the intermediate inlet 178 of the high-speed mixer 170. Since cyclopentane is in a gaseous state, the cyclopentane is differently processed in that it is not fed into the inlet portion 177 of the high-speed mixer 170, such as the polyol component constituting the primary mixture, various additives and catalysts it means.

The apparatus 100 for producing a rigid polyurethane foam board according to the present invention is characterized in that the polyol, the catalyst and nitrogen are supplied from the inlet 177 and mixed first, and the intermediate filler 178 is supplied with pentane And a high-speed mixer 170 for further secondary mixing and then discharging the secondary mixture to the outside.

The high-speed mixer 170 mixes liquid raw materials with nitrogen uniformly to form a bubble-type primary mixture, and more uniformly mixes the primary mixture and the foaming agent to form a polyol component of the cyclopentane, And to overcome the insolubility of the drug.

The high-speed mixer 170 includes a plurality of honeycomb structures 172 that interfere with the flow of the fluid and disperse the flow direction of the fluid, and the flow passages 174 formed between the honeycomb structures 172 And includes a body 176 surrounding the outer portion thereof. The high-speed mixer 170 includes an inlet 177 disposed at the front of the body 176 and adapted to receive fluids introduced from the outside, a high-pressure mixer 170 disposed at the rear of the body 176, And an intermediate charging unit 178 formed between the inlet 177 and the discharging unit 179 and formed at an intermediate portion of the body 176. The discharging unit 179 is provided with a discharging unit 179, The fluid components flowing into the honeycomb structure 172 through the inlet portion 177 are separated by the honeycomb structures 172 from each other through the passages 174, They flow quickly, and through this process, they are uniformly mixed with one another. The cyclone pentane is injected into the middle of the high-speed mixer 170. After the cyclopentane is uniformly mixed with the primary mixture, the intermediate injection unit 178 is made into a secondary mixture, (179). ≪ / RTI >

The apparatus 100 for manufacturing rigid polyurethane foam boards according to the present invention includes a mixing head 180. The mixing head 180 receives the polymeric MDi raw material from the isocyanate tank 110 at a high pressure and receives the secondary mixture from the high-speed mixer 170 at a high pressure. Thereafter, the polymeric MDi Mixes the mixture at high speed and vigorously, and discharges the mixture through the injection nozzle.

The mixing head 180 receives the polymeric raw material supplied at a high pressure from the isocyanate tank 110 to the lower left inlet and mixes the secondary mixture supplied at a high speed from the high- And supplied to the inlet. The polymeric IMEI introduced at the left inlet and the secondary mixture injected at the right inlet at the high pressure are brought into contact with each other at the inside of the mixing head 180. At this time, the kinetic energy of the polymeric monomer and the kinetic energy of the secondary mixture are opposite to each other, and they collide with each other to cause a large collision, resulting in a violent mixing action. The raw materials intensely mixed in the mixing head 180 are discharged to the outside through the spray nozzle 182.

The raw materials discharged to the outside form a polyurethane foam board through a conventional double conveyor belt.

Practice  Yes

<< Example 1 >> Standard

In the polyol tank 120, 100 kg of the polyester polyol is sent to the second feed pipe 122, the pressure of the low-pressure pump is raised to 3.0 bar, the pressure of the high-pressure pump is raised to 120 bar, ). 15 kg of the flame retardant agent and 3 kg of the flame retardant agent are sent to the fourth supply pipe 142 in the additive tank 140, the pressure of the low-pressure pump is raised to 3.0 bar, the pressure of the high-pressure pump is raised to 125 bar, To the inlet portion 177 of the outlet. In the catalyst tank 130, 2 kg of the catalyst 1 and 3 kg of the catalyst 2 are sent to the third supply pipe 132. The pressure is raised to 3.0 bar by the low-pressure pump and is increased to 120 bar by the high- And introduced into the inlet portion 177 of the mixer 170. Nitrogen is supplied to the fifth supply pipe 152 at a rate of 2.5 NL / MIN by the nitrogen supplier 150, and then the nitrogen is elevated to a low pressure of 10 bar and then to an ultra-high pressure of 230 bar. To the inlet portion 177 of the outlet. In the blowing agent feeder 160, 25 kg of cyclopentane is fed to the sixth feed pipe 162, the pressure of the low-pressure pump is raised to 3.0 bar, the pressure of the high-pressure pump is raised to 120 bar, Lt; RTI ID = 0.0 &gt; 178 &lt; / RTI &gt;

The characteristics of the secondary mixture discharged through the outlet 179 of the high-speed mixer 170 were observed. The characteristics of the secondary mixture were slightly cloudy and had a micro bubble shape.

The secondary mixture was introduced into the right inlet of the mixing tank 170 at a high pressure of 150 bar. In the isocyanate tank 110, the polymeric MDI raw material was charged at a high pressure of 150 bar into the left inlet of the mixing tank 170 in the range of 150 to 180 parts by weight. After completion of the kneading operation at high speed in the mixing tank 170, the mixture was injected through the injection nozzle 182, and a urethane reaction was induced in the double conveyor belt region to produce a polyurethane foam board.

Nitrogen gas fixation + Cyclopentane  Observations at the time of change (1):

&Lt; Examples 2 to 6 &gt; >

In Example 1, the content of the polyol and each of the additives was fixed, and the content of the nitrogen gas was kept fixed. On the other hand, the content of cyclopentane in the blowing agent was changed to prepare a secondary mixture, The procedure of Example 1 was repeated. The data on the content of each example are summarized in Table 1 below.

 Example 2  Example 3  Example 4  Example 5  Example 6  Polyol (kg)  100   100   100   100   100  Flame retardant (kg)  15   15   15   15   15  Foaming agent (kg)  3.0   3.0   3.0   3.0   3.0  Catalyst (1) (kg)  2.0   2.0   2.0   2.0   2.0  Catalyst (2) (kg)  3.0   3.0   3.0   3.0   3.0  Nitrogen gas (NL / Min)  2.5   2.5   2.5   2.5   2.5  Cyclopentane (kg)  15   20   30   35   40  Secondary mixture (kg)  138.0   143.0   153.0   158.0   163.0 Polyol: Aromatic Polyester Polyol
Flame retardant: tris (2-chloropropyl) phosphate
Polishing agent: polysiloxane ether
Catalyst (1): Triethylamine
Catalyst (2): Pentamethyldiethylenetriamine

As shown in Table 1, when nitrogen gas is supplied to the high-speed mixer 170 at 2.0 NL / Min, 15 to 40 parts by weight of cyclolpentane is added as a foaming agent to 100 parts by weight of the polyol .

The polyurethane foam board was prepared by processing the aluminum thin film in the process of the double conveyor belt operation, and the cross section of the product was photographed. FIGS. 3 and 4 are sectional photographs of the products obtained in Examples 4 and 5, respectively. All of them were normal products and confirmed that they were not harmful.

Nitrogen gas fixation + Cyclopentane  Observation result at the time of change (2):

&Lt; Comparative Examples 1 to 5 &gt; >

In Example 1, the content of the polyol and each of the additives was fixed and the content of the nitrogen gas was kept fixed, while the content of the blowing agent cyclopentane was changed to obtain a secondary mixture. The secondary mixture was introduced into the right inlet of the mixing tank 170 at a high pressure of 150 bar. In the isocyanate tank 110, the polymeric MDI raw material was charged at a high pressure of 150 bar into the left inlet of the mixing tank 170 in the range of 150 to 180 parts by weight. After completion of the kneading operation at high speed in the mixing tank 170, the mixture was injected through the injection nozzle 182, and a urethane reaction was induced in the double conveyor belt region to produce a polyurethane foam board. The data on the content of each comparative example are summarized in Table 2 below.

 Comparative Example 1  Comparative Example 2  Comparative Example 3  Comparative Example 4  Comparative Example 5  Polyol (kg)  100   100   100   100   100  Flame retardant (kg)  15   15   15   15   15  Foaming agent (kg)  3.0   3.0   3.0   3.0   3.0  Catalyst (1) (kg)  2.0   2.0   2.0   2.0   2.0  Catalyst (2) (kg)  3.0   3.0   3.0   3.0   3.0  Nitrogen gas (NL / Min)  2.5   2.5   2.5   2.5   2.5  Cyclopentane (kg)  10   12   45   50   55  Secondary mixture (kg)  133.0  135.0  168.0  173.0  178.0 Polyol: Aromatic Polyester Polyol
Flame retardant: tris (2-chloropropyl) phosphate
Polishing agent: polysiloxane ether
Catalyst (1): Triethylamine
Catalyst (2): Pentamethyldiethylenetriamine

As shown in Table 2, when the nitrogen gas is supplied to the high-speed mixer 170 at 2.0 NL / Min and at the same time, 15 parts by weight or less of cyclopentane is added as the blowing agent, the viscosity of the mixture becomes high, The parts to be uncharged may appear, whereas when it is added in an amount of 40 parts by weight or more, the density becomes too low and the dimensional stability of the product becomes problematic.

After proceeding to Comparative Example 2 and Comparative Example 4, the polyurethane foam board obtained by treating the aluminum thin film in the course of the double conveyor belt operation was prepared, and the cross section of the product was cut and photographed . 5 and 6 are cross-sectional photographs of the products obtained in Comparative Example 2 and Comparative Example 4, respectively.

As shown in FIG. 5, in Comparative Example 2, air voids are generated by the unfilled raw material at the upper end of the cross section, and the comparative example 4, as shown in FIG. 6, , The density of the raw material is lowered, the dimensional stability is poor, and a warping or twisting phenomenon occurs when the cross section of the final product is observed.

Cyclopentane  Observation results of fixed + nitrogen gas changes (1):

&Lt; Examples 7 to 11 &gt;

In Example 1, the content of the polyol and each of the additives was fixed, and the content of the cyclic pentane was kept fixed. On the other hand, the content of the nitrogen gas was changed to obtain a secondary mixture, . &Lt; / RTI &gt; The data on the content of each example are summarized in Table 3 below.

 Example 7  Example 8  Example 9  Example 10  Example 11  Polyol (kg)   100   100   100   100   100  Flame retardant (kg)   15   15   15   15   15  Foaming agent (kg)   3.0   3.0   3.0   3.0   3.0  Catalyst (1) (kg)   2.0   2.0   2.0   2.0   2.0  Catalyst (2) (kg)   3.0   3.0   3.0   3.0   3.0  Nitrogen gas (NL / Min)   1.5   2.0   3.0   4.0   5.0  Cyclopentane (kg)   25   25   25   25   25  Secondary mixture (kg)  148.0  148.0  148.0  148.0  148.0 Polyol: Aromatic Polyester Polyol
Flame retardant: tris (2-chloropropyl) phosphate
Polishing agent: polysiloxane ether
Catalyst (1): Triethylamine
Catalyst (2): Pentamethyldiethylenetriamine

As can be seen from the above Table 3, nitrogen gas was introduced into the high-speed mixer 170 at a rate of 1.5 to 5.0 NL / Min in a state where 25 parts by weight of cyclopentane was added as a blowing agent to 100 parts by weight of the polyol .

After proceeding according to Example 8 and Example 9, the polyurethane foam board obtained by processing the aluminum thin film in the course of the double conveyor belt operation was prepared, and a cross section of the product was photographed. FIGS. 7 and 8 are cross-sectional photographs of the products obtained in Examples 8 and 9, respectively. All of them were normal products and confirmed that they were not harmful.

Cyclopentane  Observation result when fixing + nitrogen gas change (2):

&Lt; Comparative Examples 6 to 10 &gt; > >

In Example 1, the content of the polyol and each of the additives was fixed, and the content of the cyclic pentane was kept fixed. On the other hand, the content of the nitrogen gas was changed to obtain a secondary mixture, 1 &lt; / RTI &gt; The data on the content of each comparative example are summarized in Table 4 below.

 Comparative Example 6  Comparative Example 7  Comparative Example 8  Comparative Example 9  Comparative Example 10  Polyol (kg)   100   100   100   100   100  Flame retardant (kg)   15   15   15   15   15  Foaming agent (kg)   3.0   3.0   3.0   3.0   3.0  Catalyst (1) (kg)   2.0   2.0   2.0   2.0   2.0  Catalyst (2) (kg)   3.0   3.0   3.0   3.0   3.0  Nitrogen gas (NL / Min)   0.5   1.0   5.5   6.0   6.5  Cyclopentane (kg)   25   25   25   25   25  Secondary mixture (kg)  148.0  148.0  148.0  148.0  148.0 Polyol: Aromatic Polyester Polyol
Flame retardant: tris (2-chloropropyl) phosphate
Polishing agent: polysiloxane ether
Catalyst (1): Triethylamine
Catalyst (2): Pentamethyldiethylenetriamine

As shown in Table 4, nitrogen gas was introduced into the high-speed mixer 170 at a rate of 1.0 NL / Min or less, or 5.0 NL / min in the state of feeding 25 parts by weight of cyclolpentane as a blowing agent to 100 parts by weight of the polyol / Min. &Lt; / RTI &gt;

In the course of the comparative example 6 and the comparative example 10, the polyurethane foam board obtained by processing the aluminum thin film in the course of the double conveyor belt operation was prepared and the cross section of the product was photographed. Figs. 9 and 10 are cross-sectional photographs of the products obtained by the comparative example 6 and the comparative example 10, respectively.

In the case of Comparative Example 6, the mixing efficiency by the nitrogen gas is low, so that the uniformity and stability of the quality of the final product are inferior, and as seen from FIG. 9, some air voids are generated in the final product have. In addition, in the case of the Comparative Example 10, the nitrogen gas is excessively excessive and the cell size increases during the urethane reaction of the mixed raw material. As a result, as shown in FIG. 10, .

Flame Retardant Performance of Foamed Polyurethane Foam Board:

The polyurethane foam obtained in Example 4 was taken and the flame retardant performance thereof was examined. In order to objectively confirm the flame retardant performance of the polyurethane foam, the test was commissioned to the Korea Shipbuilding & Marine Equipment Research Institute.

Flammability evaluation was based on the Ministry of Land Transport Notice 2015-744 and KS F ISO 5660-1: 2008 Combustion Performance Test as test item heat release rate, and it was recognized that it is suitable as semi-fireproof material. In addition, the test item gas hazards were based on the Ministry of Land, Infrastructure and Transport Notice 2015-744 and KS F 2271: 2006 on flammability test of interior materials and structures of buildings, and the result is also suitable as semi-fireproof material .

Table 5 summarizes these results.

 Test items (flame retardant performance)   Test Specification  Test result  Heat release rate Ministry of Land Transportation Notice 2015-744
KS F ISO 5660-1: 2008  Semi-incombustible material (flame retardant grade 2) suitable  Gas hazard Ministry of Land Transportation Notice 2015-744
KS F 2271: 2006  Semi-incombustible material (flame retardant grade 2) suitable

FIGS. 11A and 11B show the hard polyurethane foam board manufactured by the fourth embodiment to the Korea Shipbuilding & Marine Engineering Research Institute, and a copy of the test report issued there is scanned and attached.

Since the polyurethane foam board manufactured by the present invention is excellent in flame retardancy and heat insulation property, it can be very usefully used for providing a polyurethane foam heat insulation board used as an interior material of a residential apartment complex and a building.

As described above, the present invention provides a process for producing a polyol compound for polyurethane production, a process for producing a polyol compound for producing a high-temperature and low-reactivity polyurethane, a process for producing the polyol compound for producing a high heat- The method for producing the polyurethane foam foam using the polyol compound for urethane production and the method for manufacturing the board for the polyurethane foam foam have been described in detail. However, the present invention is not limited thereto. The scope of which is to be determined and limited by the appended claims.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

100: rigid urethane foam board manufacturing apparatus (present invention),
110: Isocyanate tank,
112, 122, 132, 142, 152, 162:
114, 124: recovery pipe, 120, 120 ': polyol tank,
130: catalyst tank, 140: additive tank,
150: nitrogen feeder, 160: blowing agent feeder,
170: high-speed mixer, 172: honeycomb structure,
174: transfer passages, 176: body,
177: inlet portion, 178: intermediate input portion,
179: discharging portion, 180: mixing head,
182: injection nozzle,
12: 3-way valve P1: Low pressure pump,
P2: High pressure pump, F1: Flow meter

Claims (16)

10 to 30 parts by weight of a flame retardant, 1.5 to 10 parts by weight of a catalyst and 2 to 5 parts by weight of a foam stabilizer were charged at a high pressure of 100 to 180 bar and a nitrogen gas (N2) gas of 1.5 to 5.0 NL / MIN At a super-high pressure of 220 to 270 bar by a booster device while maintaining the temperature at 4 ° C or lower, thereby obtaining a primary mixture;
A second mixing step of adding 15 to 40 parts by weight of cyclopropane as a foaming agent to 115 to 150 parts by weight of the primary mixture at a high pressure of 100 to 180 bar to obtain a secondary mixture in a suspended state;
130 to 190 parts by weight of the second mixture and 200 to 300 parts by weight of Polymeric MDI are fed into a mixing head at a high pressure of 100 to 180 bar to form a third mixture;
A double conveyor step of sending the tertiary mixture to an injection nozzle coupled to a mixing head and injecting the mixture to the outside to form a polyurethane foam together with a polyurethane reaction; To
Wherein the polyurethane foam is a polyurethane foam.
The method according to claim 1,
Wherein the nitrogen (N2) gas is used while being maintained at 0 占 폚.
The method according to claim 1,
The first mixing step raises the polyester polyol feedstock to a low pressure of 2.5-5.0 bar in the second feed pipe 122 and then raising the feed pressure to 100-180 bar; The flame retardant and the foam stabilizer are raised in the third supply pipe 132 at a low pressure of 2.5 to 5.0 bar and then raised to a high pressure of 100 to 180 bar and supplied; The catalyst component is raised in the fourth supply pipe 142 to a low pressure of 2.5 to 5.0 bar, and further raised to a high pressure of 100 to 180 bar and supplied; Nitrogen gas 1.5 to 5.0 NL / MIN is supplied at an ultra-high pressure of 220 to 270 bar, all of which are put into the inlet of the high-speed mixer 170 and mixed in the first half of the high-speed mixer 170. A method for producing a polyurethane foam board.
The method of claim 3,
Characterized in that the flame retardant is used in the group consisting of tris (2-chloropropyl) phosphate, tris (20 chloroethyl) phosphate, chlorinated paraffin, triethyl phosphate, melamine cyanurate, and the manufacture of high flame retardant polyurethane foam boards Way.
The method of claim 3,
Wherein the foam stabilizer is a silicone foam stabilizer composed of a silicone glycol copolymer or polysiloxane ether or a non-silicone foam stabilizer composed of vinyl-2-pyrrolidone is used as the foam stabilizer .
The method of claim 3,
The catalyst may be an amine-based catalyst comprising triethylenediamine, dimethylethanolamine, tetramethylbutane diamine, dimethylcyclohexylamine, triethylamine, pentamethyldiethylenetriamine, and tris [3- (dimethylamino) propyl] hexahydrotriazine Characterized in that a metal catalyst based on dibutyltin dilaurate, potassium octoate, dibutyltin dimercaptide, stannus octoate is used, or a method for producing a highly flame retardant polyurethane foam board .
The method according to claim 1,
In the second mixing step, the cyclopentane component, which is a foaming agent, is supplied from the sixth supply pipe 162 to the inlet of the high-speed mixer 170 at a low pressure of 2.5 to 5.0 bar , And is further raised to a high pressure of 100 to 180 bar and supplied to the intermediate inlet of the high-speed mixer (170).
8. The method of claim 7,
The high-speed mixer 170 includes a plurality of honeycomb structures 172 which interfere with the flow of the fluid and disperse the flow direction thereof, movement passages 174 formed between the honeycomb structures 17, An inlet 177 located at the front of the body 176 and receiving fluids introduced from the outside and an inlet 176 located at the rear of the body 176 and containing the mixed fluid mixture therein, And an intermediate insertion portion 178 formed between the inlet portion 177 and the discharge portion 179 and formed at an intermediate portion of the body 176 Wherein the polyurethane foam is a polyurethane foam.
9. The method of claim 8,
The high-speed mixer 170 is fed with high pressure through the inlet 177 of the high-speed mixer 170, the pentane is introduced into the blowing agent cycle at a high speed through the intermediate inlet 178 thereof, The cyclopentane is rapidly flowed by the honeycomb structured bodies 172 between the moving passages 174 formed between the honeycomb structured bodies 172 while the honeycomb structures 172 are twisted and broken and form a vigorous vortex, To form a second mixture. &Lt; RTI ID = 0.0 &gt; 11. &lt; / RTI &gt;
10. The method of claim 9,
Wherein the cyclopentane component is further mixed to form a secondary mixture in a state where 3 to 5 components are already mixed in the high-speed mixer (170) .
11. The method of claim 10,
The secondary mixture is a mixture of a polyol component which is a raw material of an aqueous type, a cyclopentane component which is an oil-based raw material with respect to a foaming agent component, a flame retardant component and a catalyst component, and nitrogen (N2) Wherein the bubble-like suspension state is formed in the high-speed mixer (170) through a high-speed kneading process.
The method according to claim 1,
In the third mixing step, the polymeric MDi component supplied at a high pressure from the isocyanate tank 110 is raised from the first supply pipe 112 to a low pressure of 2.5 to 5.0 bar and then raised to a high pressure of 100 to 180 bar And the second mixture supplied from the high-speed mixer 170 at a high pressure of 100 to 180 bar is introduced into the other inlet of the mixing head 180 at a high speed. , A method for producing a highly flame retardant polyurethane foam board.
13. The method of claim 12,
In the third mixing step, the polymeric MDI components injected at high speed into both of the inlet ports of the mixing head 180 and the secondary mixture are confronted with each other in front of each other, so that kinetic energy of the raw material components on both sides are changed into collision energy The raw material components on both sides are vigorously mixed with each other and the raw material components sufficiently mixed due to the remaining energy of the remaining are moved to the nozzle part coupled to the mixing head 180. [ A method for producing a urethane foam board.
A highly flame retardant polyurethane foam board, characterized by being produced by any one of claims 1 to 13.
15. The method of claim 14,
The polyurethane foam board is approved as a semi-fireproof material when measured on the basis of KS F ISO 5660-1: 2008 Combustion Performance Test, Notification No. 2015-744 of the Ministry of Land, Transport and Tourism, Polyurethane foam board.
15. The method of claim 14,
The polyurethane foam board is suitable as a semi-fireproof material when measured on the basis of flammability test of internal materials and construction of buildings in KS F 2271: 2006 as a test item gas hazard test as a test item 2015-744 of the Ministry of Land, Characterized in that a high flame retardant polyurethane foam board.

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