KR20170085230A

KR20170085230A - Apparatus for urethane foaming

Info

Publication number: KR20170085230A
Application number: KR1020160004580A
Authority: KR
Inventors: 이창열; 이병권; 이병석; 구본수
Original assignee: 주식회사 대동엔지니어링; 대림산업주식회사
Priority date: 2016-01-14
Filing date: 2016-01-14
Publication date: 2017-07-24

Abstract

The urethane foam apparatus according to the present invention comprises a main body in which a base material for forming a floor cushioning material is stored and supplied and a main body connected to the main body so that the base material can be supplied from the main body, And a nozzle part formed of a cushioning material and spraying onto the bottom of the construction site.
According to the urethane foaming apparatus of the present invention, there is an advantage that the material can be supplied more easily and smoothly when the floor type cushioning material of the wet type method is applied.

Description

{Apparatus for urethane foaming}

The present invention relates to a urethane foam apparatus for the construction of a polyurethane-based cement composite for preventing the noise of a building floor.

The apartment house is a common type of housing in Korea, and it divides the space with the neighbor by the floor plate and the wall for the division of the household. Therefore, the primary impact on the floor is transmitted to the lower and lateral generations on slabs and walls, resulting in noise in the other space, which is a major cause of dissatisfaction among members of the household.

The floor impact sound is a solid sound transmitted in a different way from the sound transmitted by the air. In Korea, where more than 70% of the residential type is concentrated in the multi - family housing, the problem of the indoor environment of the residents is getting higher and it is becoming a social problem.

In the case of apartment houses that have been approved for business since July 2005, standard floor structures or floor structures with a floor slab thickness of 210 mm have been constructed in accordance with the provisions of the House Construction Standards, but before 2005, the slab thicknesses were 120 mm to 150 mm (Floor impact sound) blocking capacity of conventional apartment houses is lower than that of new buildings.

In the case of Korea, since the problem of floor impact sound was not considered seriously, there was almost no countermeasure for blocking the floor impact sound during the construction of the building. Recently, however, the floor impact sound Efforts are underway to reduce. In recent years, especially, in order to reduce the floor impact noise generated in a house with a wall structure and to satisfy the method of applying to the new construction and the remodeling market, a wet type floor cushioning material of a wet type method was developed, A new type of cushioning material that can actively cope with conditions and field conditions has been developed and used.

However, there is a demand for a technique that can easily and smoothly inject the floor cushioning material, since the material must be injected in an accurate amount at the point necessary when the floor cushioning material is laid.

Korean Patent Publication No. 10-2011-0075504

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a urethane foam apparatus which can more easily and smoothly apply a material when a floor cushioning material of a wet type is applied.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the precise forms disclosed. Other objects, which will be apparent to those skilled in the art, It will be possible.

As described above, the urethane foam apparatus of the present invention proposed as described above includes a main body in which a base material for forming a floor cushioning material is stored and supplied, and a main body connected to the main body so that the base material can be supplied from the main body, And a nozzle part formed by mixing the materials with the floor cushioning material and spraying the mixture on the floor of the construction site.

As described above, according to the urethane foaming apparatus of the present invention, there is an advantage that the material can be supplied more easily and smoothly when the installation type floor cushioning material of the wet method is applied.

1 is a perspective view showing a main body of a urethane foaming apparatus according to the present invention.
2 is a perspective view showing a nozzle part of a urethane foaming device according to the present invention.
3 is a view showing an inner flow path of a nozzle part of a urethane foaming device according to the present invention.

Hereinafter, embodiments of a urethane foam apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a main body of a urethane foam apparatus according to the present invention, FIG. 2 is a perspective view showing a nozzle unit of a urethane foam apparatus according to the present invention, and FIG. 3 is a cross- Fig.

1, a urethane foam apparatus according to the present invention includes a main body 10 in which a base material for forming a floor cushion material is stored and supplied, And a nozzle unit (11) connected to the main body (10), mixing the base material to form the floor cushioning material and spraying the floor material to the floor of the construction site.

The base material may be prepared by mixing an isocyanate, a polyether polyol and a premixed resin and mixing the first liquid phase, the ceramic mixed powder, protein, and tetraethoxysilane (TEOS) 2 liquid phase.

Here, the first liquid phase is prepared by mixing 50 to 60 parts by weight of the isocyanate, 15 to 40 parts by weight of the polyether polyol, and 1.5 to 5 parts by weight of the premix resin.

The isocyanate is preferably a mixture selected from methylene diphenyl disocyanate (MDI) having a functional group of 2.1 to 2.4.

The MDI is obtained as a mixture of Monomeric MDI and Polymeric MDI. Monomeric MDI (hereinafter referred to as MMDI) is obtained by distillation of an MDI mixture, with two isomers depending on the NCO group position, and 4,4-MDI is a colorless crystalline solid having a tendency to become a dimer at room temperature , A freezing point of about 38 ° C, a white solid state at a temperature of 38 ° C or lower, and a transparent liquid state at a temperature of 38 ° C or higher. Since the original properties change depending on the storage period and the handling temperature, the temperature should be kept at -20 ° C for the white solid state and at 42-45 ° C for the liquid state. MMDI is mainly used for the production of preforms for the production of flexible foam, shoe window, and thermoplastic polyurethane (TPU).

The polymeric MDI (hereinafter referred to as PMDI) is a brown liquid having two or more aromatic rings and isocyanate groups, and the polyurethane made from the polymer is mainly a rigid foam and a semi-rigid foam. And the reactivity is lower than that of MMDI because the functional group is more than MMDI but NCO content is lower than MMDI.

And certain pre-polymers have NCO groups at the ends by reaction of polyol with excess isocyanate. The pre-polymer has a high molecular weight and therefore has a relatively low vapor pressure, which can greatly improve the working environment. And because the process can be controlled more smoothly, the physical properties of the produced PU can be more easily controlled.

Also, Modified MDI is a pale yellowish liquid which is reacted with a part of Monomeric MDI, and is denatured to liquid form for easy handling at room temperature.

The polyether polyol is prepared by adding propylene oxide (PO) or ethylene oxide (EO) to an initiator having two or more activated hydrogens (-OH, NH2) and a propylene glycol (PPG) , PTMEG (tetramethylene glycol), and PEG (ethylene glycol) polyester. It is weak to oil solvent and has low thermal safety and weak abrasion resistance which is physical property of PPG. The polyether polyol is produced by polymerizing ethylene oxide and propylene oxide under an alkali catalyst. Low molecular weight di, polyfunctional alcohols or amines are used as initiators. On the bonding structure, the polyether polyol type has a more flexible structure than the polyester polyol type and is used in a flexible foam.

1 to 2 parts by weight of a crosslinking agent, 1 part by weight of a crosslinking agent, 1 to 2 parts by weight of a crosslinking agent, 1 to 1.5 parts by weight of a crosslinking agent, 1 to 2.5 parts by weight of a chemical foaming agent Lt; / RTI >

The curable catalyst is added in order to promote polymerization or curing or to easily cause the reaction.

The crosslinking agent serves as a crosslinking agent between the chain-like polymer chains, and the crosslinking agent imparts mechanical strength and chemical stability to the resin such as hardness and elasticity.

The bubbling agent reacts with the isocyanate to chemically bond to the polyurethane main chain, thereby effectively opening the bubbles in the foam production process.

The chain extender is used to solidify the bond when the polymer is polymerized, and diol to diamine can be used.

The foam stabilizer lowers the surface tension of the material to improve the miscibility, uniformize the size of the produced bubbles, and regulate the cell structure of the foam to impart stability to the foam.

The chemical foaming agent is an additive that induces a porous structure in the prepared interlayer noise buffer composition, alone or in combination with other materials.

The second liquid phase is preferably prepared by mixing 10 to 30 parts by weight of the protein and 10 to 20 parts by weight of the tetraethoxysilane (TEOS) with respect to 50 to 70 parts by weight of the ceramic mixed powder Do.

Preferably, the ceramic mixed powder includes at least one of cement, loess, rice husk, oyster shell, and burnt lime.

The protein acts as a foaming agent in the second liquid phase and is divided into animal foam and vegetable foam. The animal foam agent collects the keratin, horn, hair and the like of the animal and uses the protein to remove it. Since the animal foam is hardened and used for the subsequent process, the speed of the air can be accelerated. The vegetable foam agent, Is slow. In the present invention, an animal protein foam is used.

The tetraethoxysilane (hereinafter, referred to as TEOS) is a silane compound mainly used as a solvent for polymeric polymers, and the silane compound is less harmful to the human body than an organic solvent and has excellent solubility. The TEOS has a freezing point of -77 ° C and a boiling point of 165 to 166 ° C which is not easily volatilized at room temperature. It is not harmful compared to other VOC-regulated substances and is relatively harmless when used as a solvent in polymer polymerization The polymerization is stable. The TEOS silane compound penetrates into the concrete and does not volatilize. After the gelling reaction proceeds, the voids of the concrete are filled and the strength of the concrete is increased.

The main body 10 includes a first liquid tank 101 in which the first liquid phase is stored, a second liquid tank 102 in which the second liquid phase is stored, a second liquid tank 102 in which the first liquid tank 101 and the second liquid tank A pump 103 for allowing the first liquid phase and the second liquid phase of the liquid tank 102 to be supplied toward the nozzle unit 11 and a control unit 104 for controlling the operation of the pump 103 .

The nozzle unit 11 includes a first liquid flow path 111 to which the first liquid phase is supplied, a second liquid flow path 112 to which the second liquid phase is supplied, an air flow path 113 to which air is supplied, A first liquid phase of the first liquid phase flow path 111, a second liquid phase of the second liquid phase flow path 112 and air of the air flow path 113 are mixed to form a mixing path 114 for forming a floor cushioning material And a discharging part 115 discharging the floor cushioning material formed in the mixing passage 114 to the outside.

The nozzle unit 11 further includes a washing and feeding path 116 connected to the mixing channel 114 so as to supply washing water. When the floor cushioning material jetting operation is completed through the nozzle, the mixing channel 114 May be washed by the washing water supplied from the washing and feeding path 116 so as to prevent clogging by the floor cushioning material.

As described above, according to the present invention, there is an advantage in that when the installation type floor cushioning material of the wet process method is applied, the material can be supplied more easily and smoothly in a precise amount at a more accurate point.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, All changes or modifications that come within the scope of the equivalent concept are to be construed as being included within the scope of the present invention.

10: Body
11:
101: First liquid tank
102: Second liquid tank
103: Pump
104:
111: first liquid phase flow path
112: second liquid phase flow path
113: air flow
114:
115:
116: Cleaning and feeding

Claims

A body in which a base material for forming a floor cushioning material is stored and supplied; And
And a nozzle part connected to the main body so that the base material can be supplied from the main body, and mixing the base material to form the bottom cushioning material and spraying the base material to the bottom of the construction site.

The method according to claim 1,
The base material may be prepared by mixing an isocyanate, a polyether polyol and a premixed resin and mixing the first liquid phase, the ceramic mixed powder, protein, and tetraethoxysilane (TEOS) 2 < / RTI > liquid phase.

3. The method of claim 2,
The main body includes:
A first liquid tank in which the first liquid phase is stored;
A second liquid tank in which the second liquid phase is stored;
A pump for allowing the first liquid phase and the second liquid phase of the first liquid phase tank and the second liquid phase tank to be fed toward the nozzle section; And
And a controller for controlling the operation of the pump.

3. The method of claim 2,
In the nozzle unit,
A first liquid-phase flow path to which the first liquid phase is supplied;
A second liquid phase flow passage to which the second liquid phase is supplied;
An air passage through which air is supplied;
A mixing flow path for mixing the first liquid phase of the first liquid phase flow path, the second liquid phase of the second liquid phase flow path and the air of the air flow path to form a floor cushioning material; And
And a discharging portion discharging the floor cushioning material formed in the mixing passage to the outside.

5. The method of claim 4,
The nozzle unit may further include a washing water channel connected to the mixing channel so as to supply washing water,
Wherein the mixing channel is cleaned by the washing water supplied from the washing channel so as to prevent the mixing channel from being blocked by the floor cushioning material when the floor cushioning material injection operation is completed through the nozzle. .