KR101716684B1 - Adhesive compositions of 2-component polyurethane and a liquid projectile including the same - Google Patents
Adhesive compositions of 2-component polyurethane and a liquid projectile including the same Download PDFInfo
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- KR101716684B1 KR101716684B1 KR1020150182799A KR20150182799A KR101716684B1 KR 101716684 B1 KR101716684 B1 KR 101716684B1 KR 1020150182799 A KR1020150182799 A KR 1020150182799A KR 20150182799 A KR20150182799 A KR 20150182799A KR 101716684 B1 KR101716684 B1 KR 101716684B1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/08—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers using foamed adhesives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
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- General Engineering & Computer Science (AREA)
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- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention provides a process for producing a polyol, comprising: 100 parts by weight of a polyol; 0.5 to 5.0 parts by weight of a foam stabilizer based on 100 parts by weight of the polyol; and 0.5 to 5.0 parts by weight of a catalyst based on 100 parts by weight of the polyol; And a curing agent comprising a diisocyanate or a polyisocyanate, wherein the curing agent and the curing agent are mixed at a weight ratio of 5: 1 to 1: 2, and then reacted to form a polyurethane To form a polyurethane-based point and adhesive composition.
The two-part polyurethane based point and adhesive composition according to the present invention exhibits an appropriate level of viscosity that can be used even in the ocean, showing not only excellent point and adhesion to the adherend, but also a viscosity capable of being sprayed by a nozzle, It is available.
In addition, the main and curing agent react with each other in a short time and expand to 10 times or more to form a polyurethane foam capable of restricting movement of a person or the activity of an object. The formed polyurethane foam has excellent adhesive strength and physical strength, Or to manufacture non-lethal suppressed weapons.
Description
The present invention relates to a two-part polyurethane based point and adhesive composition and a liquid projectile containing the same, and more particularly, to a two-part polyurethane based point and adhesive composition comprising a main material and a hardener, wherein the main material and the hardener are mixed and reacted for a short time to form a polyurethane foam A two-part polyurethane dot / adhesive composition and a liquid projectile using the same.
Recently, illegal fishing of fishing vessels of other countries has become a problem in the world. In Korea, illegal fishing of 200,000 fishing vessels has caused material and human damage to seaports, which are cracking illegal fishing with fishermen.
In particular, illegal fishing vessels in China are not only difficult to crack down on the seas, but also to prevent illegal fishing from entering the EZZ territory at midnight or early morning, Protection, protection against abandonment, resistance to high strength by using shields such as shafts and steel pipes, and damage to the seafloor in the process of cracking it.
In September 2008, four seaports of Mokpo Seonggye in Gagae Island, Shinan-gun, Jeollanam-do, were given 1 hour to Chinese sailors. The number of seafarers who had tried to crack down on illegal Chinese ships for the last three years was countless And on December 12, 2010, the Chinese captain was stabbed to death by a stabbing weapon.
Therefore, in this situation, various methods are being studied for the seaports to stop illegal fishing vessels safely and quickly and to arrest the crew. In recent years, interest in non - lethal weapons has been increasing as a device for such a role.
In general, non-lethal weapons (or less-lethal weapons) refer to weapons that are less likely to kill human beings and are used to fight against large-scale killer weapons that were used during the first, Has been developed since the 1980s with the aim of minimizing the damage of human life and reducing the loss of battle and the will of resistance.
The above-mentioned non-lethal weapon utilizes those manufactured in various forms and methods, and besides a stronger voltage such as a table or stun gun, a gas gun, a tear gas or tear gas, a swimmer gun capable of generating a vomiting by emitting a sound wave, And a device for disturbing the flight path or the ship's path by launching a gun electromagnetic wave and a laser that temporarily reduces the visual acuity.
As a result, non-lethal weapons such as water cannons, water cannons using fire fighting helicopters, and water cannons mixed with tear liquid have been introduced and used at present.
However, the water cannon has a disadvantage that it is scattered in the form of mist when the wind velocity is high or the spraying direction does not coincide with the direction of the wind, and the tear liquid used as the water cannon is not easily decomposed in a natural environment, There is a limit that can adversely affect.
Therefore, there is a need for studies on materials that can be effectively utilized as non-lethal weapons, and methods for operating them, which can overcome the aforementioned disadvantages.
Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a polyurethane foam having a point and adhesion property by mixing and reacting a base material and a curing agent in a short time, The present invention provides a two-component polyurethane dot / adhesive composition which can be effectively used for large-scale use, and a liquid-state projectile using the two-component polyurethane dot / adhesive composition.
According to an aspect of the present invention, there is provided a polyol composition comprising 100 parts by weight of a polyol, 0.5 to 5.0 parts by weight of a foam stabilizer based on 100 parts by weight of the polyol, and 0.5 to 5.0 parts by weight of a catalyst based on 100 parts by weight of the polyol. Containment; And a curing agent comprising a diisocyanate or a polyisocyanate, wherein the curing agent and the curing agent are mixed at a weight ratio of 5: 1 to 1: 2, and then reacted to form a polyurethane To form a polyurethane-based point and adhesive composition.
Also, the main material and the curing agent react for 30 to 150 seconds to form a polyurethane foam.
The polyurethane foam is characterized in that the strength by JIS K6503 (with a speed of 2 cm / minute in padding) is 100 g bloom or more.
The polyol is a polyfunctional polyol having at least two functional groups and is a water-soluble polyether-based, polyester-based or polycarbonate-based polyol having a hydroxyl value of 20 to 500 mg KOH / g and a molecular weight of 500 to 3000 g / mol .
In addition, the host material may further include at least one additive selected from the group consisting of a biodegradable material and a chain extender.
The biodegradable material may be at least one selected from the group consisting of dextrin, chitin, chitosan, alginic acid, cellulose, starch, collagen and gelatin. The chain extender may be at least one selected from the group consisting of diols, triols, diamines, tetraols , Polyamines, and amino alcohols.
The present invention also provides an integrated liquid projectile comprising the above-described two-part type point and adhesive composition, wherein the main material and the curing agent are separately stored in the front part and the rear part separated by the partition wall.
The present invention also relates to a two-part type point and adhesive composition as described above, wherein the main material and the hardener are separately stored in independent storage spaces, and the inside and the inside of the There is provided a two-component polyurethane based point and adhesive composition launching device comprising a nozzle and a double nozzle of an external nozzle.
The two-part polyurethane based point and adhesive composition according to the present invention exhibits an appropriate level of viscosity that can be used even in the ocean, showing not only excellent point and adhesion to the adherend, but also a viscosity capable of being sprayed by a nozzle, It is available.
In addition, the main and curing agent react with each other in a short time and expand to 10 times or more to form a polyurethane foam capable of restricting movement of a person or the activity of an object. The formed polyurethane foam has excellent adhesive strength and physical strength, Or to manufacture non-lethal suppressed weapons.
In addition, the two-part polyurethane based point and adhesive composition according to the present invention can be used in a nature-friendly manner because it further contains a biodegradable material or is highly biodegradable by a polyol contained in the main material.
1 is a flowchart showing a process of forming a polyurethane foam using a two-part polyurethane based point and adhesive composition according to the present invention.
2 is an actual image of a process for forming a polyurethane foam using the two-part polyurethane-based point and adhesive composition according to the present invention.
3 is a view showing an example of the integral liquid-projectile according to the present invention.
4 is a view showing an example of a two-component polyurethane based point and adhesive composition launching apparatus according to the present invention.
5 is an actual image of a polyurethane foam formed from a two-part polyurethane based point and adhesive composition produced by the method according to Examples 1 to 3 of the present invention.
6 is a graph showing the termination time of foaming according to the temperature change of the two-part polyurethane based point and adhesive composition produced by the method according to Examples 1 to 3 of the present invention.
Hereinafter, the present invention will be described in detail.
More particularly, the present invention relates to a two-part polyurethane based point and adhesive composition, and more particularly to a two-part polyurethane based point and adhesive composition which comprises a main material containing a polyol, a foaming agent and a catalyst and a curing agent comprising a diisocyanate or a polyisocyanate, The present invention relates to a two-part polyurethane-based point and adhesive composition capable of forming a foamed polyurethane foam by reacting and expanding in a short period of time when the main component and the curing agent are mixed in a state of being stored in a separated state in a two- Content.
Wherein the composition comprises 100 parts by weight of a polyol, 0.5 to 5.0 parts by weight of a foam stabilizer based on 100 parts by weight of the polyol, and 0.5 to 5.0 parts by weight of a catalyst based on 100 parts by weight of the polyol, and a diisocyanate or polyisocyanate- And the curing agent may be mixed at a weight ratio of 1: 0.2 to 1: 2.
As shown in Figs. 1 and 2, the two-part polyurethane based point and adhesive composition having the above composition can form a polyurethane foam having a point and adhesion property by being foamed in a short time by mixing the main material and the curing agent, The host material and the curing agent react within 30 to 150 seconds at atmospheric pressure to form a polyurethane foam having a point and adhesion property.
The main component and the curing agent may be mixed at a weight ratio of 1: 0.2 to 1: 2, preferably within 90 seconds, to form a polyurethane foam, so that the isocyanate of the curing agent exhibits toxicity The polyurethane foam can be formed by reacting with the polyol within 90 seconds, which is advantageous in solving the problem of toxicity due to the isocyanate.
At this time, since the polyurethane foam is easily formed in the winter season and the summer season, the temperature range for forming the polyurethane foam is not particularly limited, but polyurethane foam can be easily formed at a temperature of 0 to 50 ° C.
The two-part polyurethane based point and adhesive composition according to the present invention comprises 100 parts by weight of a polyol, 0.5 to 5.0 parts by weight of a foam stabilizer based on 100 parts by weight of the polyol, and 0.5 to 5.0 parts by weight of a catalyst based on 100 parts by weight of the polyol And a curing agent containing a diisocyanate or a polyisocyanate, a polyurethane foam having excellent mechanical properties and adhesion can be formed by mixing the curing agent and the curing agent.
In addition, the 2-pack type polyurethane dot / adhesive composition according to the present invention has a strength by JIS K 6503 (with a speed of 2 cm / min), which is a mass necessary for 4 mm of crushing when the surface is normally pressed with a 12.7 mm flier, Of not less than 100 g bloom and an average adhesive strength of 20 to 85 N by T-peel strength can be used to form a polyurethane foam having not only excellent mechanical properties but also excellent adhesion.
The polyol is a hydrophilic polyol, a water-soluble polyether-based, polyester-based or polycarbonate-based polyol having a polyfunctional polyol having 2 or more functional groups and a hydroxyl value of 20 to 500 mg KOH / g and a molecular weight of 500 to 3000 g / Can be used.
More specifically, the polyol is a polyether-based, polyester-based or polycarbonate-based polyol having a functional group of 2 to 3, a hydroxyl value of 20 to 500 mg KOH / g and a molecular weight of 500 to 3000 g / mol , And 0.1% of water, it is possible to form a polyurethane foam without a separate foaming agent, and it is possible to maintain an excellent adhesive force without greatly influencing the foaming rate and the mechanical strength of the foam, Can be improved.
In addition, since the polyol is a hydrophilic polyol having a molecular weight of 500 to 3000 g / mol, it is possible to easily mix the curing agent and the additive with the host material, as well as firing through a nozzle as a liquid body, And a cured polyurethane foam excellent in adhesion can be formed. That is, when the polyol has a molecular weight of more than 3000 g / mol, it is difficult to mix with the curing agent and the additive because of high viscosity, and it is difficult to launch the polyol through the nozzle itself.
The curing agent may be a diisocyanate or a polyisocyanate having two or more functional groups and may be selected from the group consisting of toluene diisocyanate (TDI), methylene diphenyl diisocyanate (MDI), hexamethylene diisocyanate diisocyanate, HDI), isophorone diisocyanate (IPDI), dicyclohexylmethane diisocyanate (H12MDI), hexamethylene diisocyanate trimer, toluene diisocyanate trimer ), An isophorone diisocyanate trimer, or a mixture thereof.
More preferably, the curing agent may include 2 to 6 polyisocyanates having a functional group containing methylene diphenyl diisocyanate (MDI).
The foam stabilizer prevents the cell structure from being separated, collapsed, and coarse cell foam during the formation of the polyurethane foam, as well as forming a high quality open-cell foam .
For this purpose, the foam stabilizer may be selected from the group consisting of silicone compounds, polyoxyethylene and polyoxypropylene derivatives, polyoxyethylene glycol, polyoxyethylene / polyoxypropylene random copolymers or polyoxyethylene / Polyoxypropylene block copolymers, polyoxyethylene alkylphenol condensation products, polyoxyethylene alkyl ethers, polyethylene fatty acid esters, polyoxyethylene castor ether, polyoxyethylene hydrogenated castor ether, polyoxyethylene amine ( polyoxyethylene amine, polyoxyethylene lauryl ether, or a mixture thereof. More preferably, silicone-based foaming agent can be used.
The catalyst promotes the polyurethane reaction to improve the reaction rate of the host material and the curing agent, and the catalyst may be an amine catalyst.
The amine-based catalyst may be selected from the group consisting of triethylenediamine, tetramethylethylenediamine, 1-methyl-4-dimethylaminoethyl-piperazine, 3-methoxy-N-dimethyl- N, N-dimethyl-N, N'-dimethylisopropyl-propylenediamine, N, N-diethyl-3-diethylaminopropylamine, triethylamine, tripropylamine, triisopropanolamine, tributyl Amine, trioctylamine, hexadecyldimethylamine, tris (3-dimethylamino) propylhexahydrotriamine, N-methylmorpholine, N-ethylmorpholine, N-octadecylmorpholine, monoethanolamine, diethanolamine N, N ', N'-tetramethylbutane diamine, N, N, N'-diethanolamine, diethylenetriamine, N, N, N'-tetraethylhexamethylenediamine, bis [2- (N, N-dimethylamino) ethyl] ether, N, N- Methylbenzylamine, N, N-dimethylcyclohexylamine, N, N, N ', N', N'-pentamethyldiethylenetriamine, triethylenediamine, formic acid and other salts of triethylenediamine, 2 amine and an oxyalkylene adduct, an azacyclic compound such as N, N-dialkylpiperazines, and a variety of N, N ', N'-trialkylaminoalkylhexahydrotriazole A typical example is a boron catalyst.
In addition, the two-part polyurethane based point and adhesive composition according to the present invention can be constituted so as to further include an additive in the above-mentioned main material, thereby improving the biodegradability as well as the termination of foaming and polyurethane foam formation time, volume change, .
The additive may be a biodegradable material, a chain extender, or a mixture thereof. The biodegradable material may be dextrin, chitin, chitosan, alginic acid, cellulose, starch, collagen, gelatin or a mixture thereof. The biodegradable material may be added to the host material to improve biodegradability, The foam is easily disassembled to solve environmental problems and human hazards.
The chain extender may be a diol, a triol, a diamine, a tetraole, a polyamine, an amino alcohol, or a mixture thereof. The chain extender may be added to the host material to increase the length of the molecule, To form a network structure, to strengthen the bonding between molecules, and to improve the mechanical strength of the polyurethane foam thus formed.
As described above, the two-part polyurethane based point and adhesive composition according to the present invention comprises a main material containing a polyol, a foaming agent and a catalyst, and a curing agent containing a diisocyanate or a polyisocyanate, A polyurethane foam having excellent mechanical strength and adhesive strength can be formed.
Accordingly, the two-pack type polyurethane dot / adhesive composition according to the present invention as described above can be effectively utilized as a foam material in various fields, and can be effectively utilized as a non-lethal weapon for a civilian use.
In the present invention, when the base material and the curing agent are separated from each other, the base material and the curing agent are kept in a separated state. When the base material and the curing agent are mixed and fired, they adhere to the surface of the adhered material with excellent adhesive strength. The present invention relates to an integral liquid projectile capable of forming a polyurethane foam.
The integral liquid projectile may be divided by a partition wall, and may include a front portion and a rear portion to store the main and curing agent, respectively (see FIG. 3).
When the bullet is fired on the surface of the adherend in a state where the base material and the hardener are separately stored in the bullet including the front portion and the rear portion as described above, the bullet collides with the surface of the adherend, The base material and the curing agent which are separated by the partition walls are mixed with each other and the base material and the curing agent react with each other to foam on the surface of the deposited material to form a polyurethane foam.
The launching of the integrated liquid projectile may be carried out by using various known methods. For example, a bullet projecting device using air pressure or a bullet at the rear end of the integral liquid projectile may be used to project a bullet A launching device is a representative example.
In the present invention, the separation and separation of the main material and the curing agent are maintained, and when they are mixed and fused to the adherend, they are adhered to the surface of the adherend with excellent adhesive force and then foamed rapidly to limit the movement of the person or the activity of the object The present invention provides a technical content of a two-component polyurethane based point and adhesive composition launch device capable of forming a polyurethane foam.
The launching apparatus may further include a storage container capable of separately storing the main material and the hardener, and each of the storage containers may be connected to an inner nozzle and an outer nozzle, respectively, so as to simultaneously fire the main material and the hardener. have.
When the base material and the curing agent are fired on the surface of the adherend in a state where the base material and the curing agent are separated and stored in the bullet including the front portion and the rear portion as described above and the base material and the curing agent are mixed And reacted and foamed on the surface of the substrate to form a polyurethane foam.
As described above, in order to simultaneously fire the base material and the curing agent, the launching apparatus may be a device provided with a double nozzle of an inner nozzle and an outer nozzle, and capable of simultaneously emitting the base material and the hardener supplied from the respective storage containers And may be configured to discharge the main material and the curing agent by using air pressure, but various solution injection methods can be utilized without being limited thereto.
Therefore, when the above-described unidirectional liquid projectile or two-liquid polyurethane based point and adhesive composition launching device is used, it is adhered to the surface of the adherend with excellent adhesive force, and rapidly expanded to 10 times or more to restrict movement of a person or activity of an object · The adhesive composition can be used for an interpersonal purpose, and can be effectively used for the purpose of eliminating illegal fishing boats or suppressing protests.
Hereinafter, the present invention will be described in more detail with reference to examples.
The embodiments presented are only a concrete example of the present invention and are not intended to limit the scope of the present invention.
<Examples>
A two-pack type polyurethane dot / adhesive composition having various compositions for forming a polyurethane foam was prepared using a hydrophilic polyol and various additives.
To this end, a curing agent comprising diisocyanate or polyisocyanate and a host material containing a polyol, a catalyst, a foam stabilizer and various additives were prepared, and the additive added to the host material was a biodegradable material (starch, dextrin) A mixture of these materials is used, and the polyurethane foam can be formed by reacting the above-described host material and the curing agent (see FIG. 2).
Example 1 Preparation of two-pack type polyurethane-based point and adhesive composition (HMA-01 to HMA-04)
Soluble polyol having a hydroxyl value of 20 to 25 mg KOH / g and a molecular weight of about 2000 g / mol and having high hydrophilicity was used to prepare a two-part polyurethane based point and adhesive composition having high biodegradability.
At this time, the two-component polyurethane dot and adhesive composition was composed of SC-3704 as a polyol, M-200 as a curing agent, and 67 parts by weight of a curing agent based on 100 parts by weight of the polyol.
Also, the polyol was constituted so as to include a catalyst of PC-5 and PC-41 and a foam stabilizer of TEGOSTAB B8409, and the starter was further comprised of starch, dextrin or chain extender as an additive, (HMA-01 to HMA-04) were prepared, each containing a SC-3704 polyol and different types and contents of additives.
< Example 2> 2-pack type Polyurethane-based point / adhesive composition ( HMB -01 to < HMB - 05) of Produce
A two-pack type polyurethane dot / adhesive composition having improved flowability was prepared using a polyol having a hydroxyl value of 30 to 115 mg KOH / g and a molecular weight of about 1000 g / mol with a low viscosity.
At this time, polyol was used as the two-component polyurethane dot and adhesive composition, SC-2170 or KE-825 was used, S-2527 was used as the curing agent, and the curing agent was added in an amount of 67 parts by weight based on 100 parts by weight of the polyol.
Further, the polyol is mainly composed of a catalyst of PC-5 and PC-41 and a foam stabilizer of TEGOSTAB B8409, and may further contain starch, dextrin or chain extender as an additive, (HMB-01 to HMB-05), a two-part polyurethane-based point and adhesive composition containing a polyol of C-2170 or KE-825 and having different kinds and contents of additives was prepared.
Example 3 Preparation of two-part polyurethane-based point and adhesive composition (HMC-01 to HMC-04)
A two-part polyurethane-based point and adhesive composition was prepared using a polyester polyol having a hydroxyl value of about 310 mg KOH / g and a molecular weight of about 320 g / mol and having high biodegradability.
At this time, the two-part polyurethane dot and adhesive composition was composed of JEP-402P as a polyol, M-200 as a curing agent, and 67 parts by weight of a curing agent based on 100 parts by weight of the polyol.
Also, the polyol was constituted so as to include a catalyst of PC-5 and PC-41 and a foam stabilizer of TEGOSTAB B8409, and the starter was further comprised of starch, dextrin or chain extender as an additive, (HMC-01 to HMC-04) were prepared as shown in Table 1, and two kinds of polyurethane-based point and adhesive compositions containing JEP-402P polyol and different types and contents of additives were prepared.
<Experimental Example>
(1) Strength and viscosity analysis of the two-part polyurethane-based point and adhesive composition prepared
Properties of each of the polyurethane-based point and adhesive compositions of Examples 1 to 3 were analyzed and shown in Table 4, and the polyurethane foam formed by each of Examples 1 to 3 was shown in FIG. 3 .
Referring to Table 4 and FIG. 3, the two-pack type polyurethane based point and adhesive composition (HMA-01 to HMA-04) prepared by the method according to Example 1 is a polyol having high hydrophilicity SC-3704 was used to form a polyurethane foam. The polyurethane foam was formed within a short time of 2.5 minutes or less, and it was confirmed that the formed polyurethane foam exhibited excellent physical strength and volume change.
The two-pack type polyurethane based point and adhesive compositions (HMB-01 to HMB-05) prepared by the method according to Example 2 were prepared in the same manner as in Example 1 (HMA-01 to HMA-04) (HMA-01 to HMA-04) by a small molecular weight, it is possible to form a foam with a relatively short molecular weight and a short foam termination time of 1.5 minutes or less It was also confirmed that the starch and dextrin showed relatively good biodegradability and formed a foam having excellent physical properties in volume change and physical strength.
In addition, the two-pack type polyurethane based point and adhesive compositions (HMC-01 to HMC-04) prepared by the method according to Example 3 were prepared in the same manner as in Example 1 (HMA-01 to HMA-04) A polyol having a smaller molecular weight than that of Example 2 (HMB-01 to HMB-05) was used. To further improve the biodegradability, a polyester polyol was used. To HMA-04) and Example 2 (HMB-01 to HMB-05), but the physical strength could be further improved.
(2) Analysis of the viscosity change of the prepared two-pack type polyurethane-based point and adhesive composition according to the temperature
In order to investigate the change in viscosity of a two-part polyurethane-based point-and-stick composition containing a hydrophilic polyol with a change in temperature under the assumption of the temperature during the winter season and the summertime, a low temperature agitation circulating with alcohol from 0 to 10 ° C was carried out at 20 to 50 ° C , Viscosity was measured with a Brookfield viscometer (RV-II +, SC4-21 spindle) using a water bath. The viscosities of the two-part polyurethane-based point and adhesive compositions containing polyol were measured at various temperatures by using HMA-01 (SC-3704 mixture), HMA-03 (SC-3704 HME-04 (SC-3704 and dextrin mixture), HMB-01 (SC-2170 mixture) and HMC-01 (JEP-402P mixture) The viscosity change was measured and the results are shown in Table 5.
Referring to Table 5, it was confirmed that the mixed liquid containing starch or dextrin in the polyol had a higher viscosity than the starch or the polyol containing no dextrin at both the low temperature and the high temperature. In addition, it was confirmed that the starch had a higher molecular weight than dextrin, and thus the viscosity of the mixture containing starch was higher than that of the mixture containing dextrin.
In addition, it was confirmed that the viscosity of the curing agent was much lower than that of the host material. Therefore, it is considered that the addition of starch or dextrin increases the viscosity and the mixing of the starch or dextrin with a substance such as a polyol or a hardening agent becomes difficult, while the degree of biodegradation is improved according to the amount of starch or dextrin added.
(3) Analysis of the bloom strength of the polyurethane foam formed by the two-part polyurethane-based point and adhesive composition prepared
(HMB-01 to HMB-05 and HMC-01 to HMC-04) prepared by the two-pack type two-component polyurethane based pressure-sensitive adhesive compositions (HMB-01 to HMB-05) prepared by the method according to Example 2 and Example 3 The strength was measured. In this case, a compact 100-2 (Rheotex) was used as a bloom strength measuring device, and a JIS K 6503, which is a mass necessary for 4 mm crushing when a surface is pressed with a 12.7 mm flier, is used to measure the diameter ) 12.7 mm, wave height of 2 cm / min and depth of 4 mm. The results of the measurement are shown in Table 6 below.
Referring to Table 6 above, all of HMB-02 to HMB-05 exhibited excellent strengths of 200 g or more, and in particular, HMC-01 to HMC-04 exceeded the measurement limit of 2,000 g bloom And HMB-02 to HMB-05 and HMC-01 to HMC-04, respectively, were found to have excellent strength.
(4) Adhesion analysis of the polyurethane foam formed by the two-part polyurethane-based point and adhesive composition produced
(HMB-02 to HMB-05) and Example 3 (HMC-01) to quantitatively analyze the adhesive strength of the polyurethane foam formed by the two-part polyurethane based point and adhesive composition thus prepared, - T-peel strength was measured. Specifically, HMB-02 to HMB-05 and HMC-01 were adhered to each of the specimens with cotton as a specimen, and the specimens were uniformly cut at a width of 25 mm after stopping for 10 minutes or more.
The cut samples were subjected to T-peel strength four times at a rate of 10 cm / min at room temperature, and the average of the measured values was shown in Table 7 in terms of Newton (N). Also, a universal tensile machine (UTM) was used to measure the strength.
Referring to Table 7, HMC-01 showed excellent strength of more than 2000 g bloom in the measurement of the jelly strength of the polyurethane foam, but the adhesive strength was about half the adhesive strength of HMB-02 to HMB-05 Respectively. The HMC-01 exhibited an adhesive strength of 20 N or more, confirming that HMC-01 had a lower adhesive strength than HMB-02 to HMB-05 and an excellent adhesive strength.
(5) Biodegradability analysis of the polyurethane foam formed by the two-part polyurethane-based point and adhesive composition produced
In order to confirm the biodegradability of the polyurethane foam formed by the two-part polyurethane based point and adhesive composition thus prepared, Example 1 (HMA-01, HMA-03 and HMA-04) prepared in the above example, (HMC-01) and Example 3 (HMC-01) were each foamed and then ground into sand using sandpaper. The degree of biodegradation was measured by OECD 301C method for 4 weeks. Table 8 shows the results.
As shown in Table 8, HMA-03 and HMA-04 containing 50% by weight of starch or dextrin added to the polyol showed a biodegradability of about 10% higher than those of the starch or dextrin-free HMA-01 HMA-03 and HMA-04 foams containing a polyether polyol added with starch or dextrin in spite of not adding starch and dextrin in the case of HMC-01 containing polyester polyol High.
(6) Analysis of polyurethane foam time according to the temperature of the two-pack type polyurethane-based point and adhesive composition
(HMA-03 and HMA-04) and Example 3 (HMC-01) prepared in the above example were measured at 0 to 50 ° C. in order to measure the termination time of polyurethane foaming according to seasonal temperature changes And the rising time of the foaming was measured while changing the temperature of the curing agent and the curing agent. The measurement results are shown in FIG.
4, it was confirmed that the foaming termination time was decreased with increasing temperature in both of HMA-03, HMA-04, and HMC-01, and the change was largely observed in the vicinity of 0 to 10 ° C, It was confirmed that the time required for completion of the foam formation was linearly decreased at a temperature higher than the above range.
From the above results, it can be seen that the two-part polyurethane based point and adhesive composition forming the point / adhesive polyurethane foam of the present invention can form polyurethane foam by mixing and reacting the base material and the curing agent in a short period of time and terminating the foaming, It can be seen that the formed polyurethane foam has excellent adhesive strength and physical strength. In addition, the polyurethane-based point and adhesive composition of the present invention includes a polyester-based polyol or a biodegradable material such as starch or dextrin as an additive in the main material, thereby improving the biodegradability and easily dissolving the formed polyurethane foam And it is environmentally friendly.
Accordingly, the polyurethane-based point and adhesive composition of the present invention can form polyurethane foam in a short time due to excellent adhesive force and physical strength, and has a viscosity capable of being fired in a liquid phase, so that it can be effectively utilized as a liquid projectile for non- It is possible.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.
Claims (8)
A curing agent comprising a diisocyanate or a polyisocyanate,
The main material and the curing agent are mixed at a weight ratio of 5: 1 to 1: 2, and then reacted to form a point-and-stick polyurethane foam,
The polyol is a water-soluble polyether-based, polyester-based or polycarbonate-based polyol having a hydroxyl value of 20 to 500 mg KOH / g and a molecular weight of 500 to 3,000 g / mol, wherein the polyol is a polyfunctional polyol having two or more functional groups.
The host material further comprises an additive made of a biodegradable material,
Wherein the biodegradable material is at least one selected from the group consisting of dextrin, chitin, chitosan, alginic acid, cellulose, starch, collagen and gelatin.
Wherein the main component and the curing agent react for 30 to 150 seconds to form a polyurethane foam.
Wherein the polyurethane foam has a strength of at least 100 g bloom according to JIS K6503 (with a padding speed of 2 cm / min).
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| KR20210046233A (en) * | 2019-10-18 | 2021-04-28 | 주식회사 엘지화학 | Two-part polyurethane adhesive composition |
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| KR20220017102A (en) * | 2020-08-04 | 2022-02-11 | (주)포스엔지니어링 | Splint for Emergency |
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