KR20170018656A - Ozone Resistant Polyurethane Composition and Process of Preparing Same in using boundary of ozonewater and air - Google Patents

Ozone Resistant Polyurethane Composition and Process of Preparing Same in using boundary of ozonewater and air Download PDF

Info

Publication number
KR20170018656A
KR20170018656A KR1020150112561A KR20150112561A KR20170018656A KR 20170018656 A KR20170018656 A KR 20170018656A KR 1020150112561 A KR1020150112561 A KR 1020150112561A KR 20150112561 A KR20150112561 A KR 20150112561A KR 20170018656 A KR20170018656 A KR 20170018656A
Authority
KR
South Korea
Prior art keywords
ozone
weight
water
parts
present
Prior art date
Application number
KR1020150112561A
Other languages
Korean (ko)
Inventor
최정미
Original Assignee
최정미
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 최정미 filed Critical 최정미
Priority to KR1020150112561A priority Critical patent/KR20170018656A/en
Publication of KR20170018656A publication Critical patent/KR20170018656A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/005—Stabilisers against oxidation, heat, light, ozone
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/07—Aldehydes; Ketones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3472—Five-membered rings
    • C08K5/3475—Five-membered rings condensed with carbocyclic rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/66—Substances characterised by their function in the composition
    • C08L2666/78—Stabilisers against oxidation, heat, light or ozone

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Sealing Material Composition (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The present invention relates to an ozone-resistant polyurethane composition in a half-shell receiving manner capable of preventing corrosion at the interface between ozone water and ozone gas, and a method for producing the same. The ozone-resistant polyurethane in the half-shell receiving invention of the present invention is not only resistant to ozone water even when it is completely contained in ozone water at a high concentration (8 ppm), but also in a state of being contained in the interface between the ozone water and the gaseous state Semi-submerged state), it has strong corrosion resistance against ozone.
An object of the present invention is to provide a polyurethane composition having good durability at physical properties such as hardness, recording and cracking even at the interface between ozone water and gaseous phase having an ozone concentration of about 8 ppm. Another object of the present invention is to provide an ozone-resistant polyurethane composition which can be used as a lining, a sealant, a cushion body, a corrosion inhibitor, etc. in various valves and pipes as well as water supply and drainage facilities.
The ozonized polyurethane composition according to the present invention comprises a diphenylmethane diisocyanate (MDI) represented by the following formula (1) and a polytetramethylene ether glycol (PTMEG) represented by the following formula (2) 100 parts by weight of a polyurethane prepolymer; 10 to 12 parts by weight of 1.4 butane diol (BDO: 1.4 Buthane Diol) represented by the following formula (3) as a hydroxyl group (OH) curing agent; And 1.6-2.2 parts by weight of benzophenone or benzotriazole as a UV stabilizer.
(Formula 1)

Figure pat00013

(2)
Figure pat00014

(Formula 3)
Figure pat00015

The ophthalmic polyurethane composition according to the present invention comprises 100 parts by weight of a polyurethane prepolymer composed of diphenylmethane diisocyanate represented by the above formula (1) and polytetramethylene ether glycol represented by the above formula (2), benzophenone or benzotriazole 1.6 to 2.2 parts by weight of a mixture are mixed and stirred at 80 to 90 DEG C for 20 minutes; And mixing 10 to 12 parts by weight of 1.4 butanediol represented by the above formula (3) in the above-mentioned solution.
The present invention has good durability in terms of properties such as recording and cracking at the interface between ozone water and gaseous state at the ozone concentration of about 8 ppm, and has good durability in the ozonated water line of advanced treatment water treatment plant, the present invention provides a novel ointment-resistant ozone-resistant polyurethane composition which can be used as a sealant, a cushion body, a corrosion inhibitor, and the like. Therefore, the present invention provides an effect of maximizing the service life of various facilities by protecting various facilities used in the ozonated water line from the strong oxidizing power of the ozonated water.

Description

Technical Field [0001] The present invention relates to an ozone-resistant polyurethane composition and a method for producing the ozone-resistant polyurethane composition,

The present invention relates to a polyurethane composition. More particularly, the present invention relates to a lining material for corrosion prevention or sealing function of various valves used in an ozone treatment line of an advanced treatment plant, or an inner coating material or ozone contact Ozone-resistant polyurethane composition capable of preventing corrosion even at the interface between ozone water and ozone gas among ozone-resistant polyurethanes which can be used as a corrosion inhibitor or cushion seat material " .

The advanced treatment plant uses ozone (O 3 ) as a means of disinfecting water. Since ozone is very strong oxidizing, the surfaces of valves, pipes and ozone contact vessels used in the ozone line must be protected by ozone-resistant materials. Ozone is composed of three oxygen atoms, has a sterilizing power based on strong oxidizing power, has no residual material after sterilization, and has a very short half life in water of 25 minutes, which is used in many fields as well as advanced treatment water treatment plants.

Ozone water is used as water for ozone treatment. Ozone water is widely used for disinfection of water in advanced treatment plant and prevention of food corruption at food processing plant. In addition, ozone water is used for sewage treatment, wastewater treatment, and manure disposal. Often, highly purified water treatment plants in a water treatment plant include an ozone disinfection process.

The ozone oxidation power will corrode equipment that uses ozone, so ozone-resistant equipment must be used for ozone-resistant materials. The ozone-resistant materials known so far include metals such as stainless steel, brass, pig iron and plastics such as polyvinyl chloride (PVC), Teflon and the like, as well as polyethylene (PE), ethylene propylene There is synthetic rubber.

As the demand for ozone water increases, facilities are becoming diversified, and material constituting each facility is also actively developed. Among the ozonated water facilities, polyurethane is a material that can substitute for elastomers such as rubber but is resistant to ozone. Polyurethanes are generally known to be very strong in ozone as a result of testing for ozone in air.

Since the concentration of ozone is mainly used in ppm, the unit of ppm is a unit of the ratio to the amount of water. Therefore, the difference between the ozone concentration in the ozone water of 1 ppm and the ozone concentration in the gaseous state is 1 ppm. The difference in density between water and air is about 1,000 times. Considering the difference between the molecular weight of water and the average molecular weight of air, the volume of one million molecules of air molecules is about 1,600 times the volume of one million molecules of water molecules. Therefore, assuming the same volume, the number of ozone contained in 1 ppm of ozone water is about 1,300 to 1,500 times, depending on temperature and pressure, compared with 1 ppm of gas.

As a prior art, there is a " ozone-resistant polyurethane composition and a production method thereof " as a prior art for composition ratio and production method of polyurethane which does not cause corrosion even in high concentration ozone water. In the prior art, the composition ratio and the production method of the polyurethane without the change of hardness and without the recording and the crack were suggested even at the ozone water concentration 8 ppm which is much higher than the ozone concentration of 1 to 2 ppm used in the water treatment.

In the environment where ozone water is used, the place where the most corrosion occurs is the interface between the ozone water and the gas state. This is because the ozone contained in the ozonated water vaporizes and exerts a strong impact on the material that is constantly touching the interface through the micro bomb effect. Through this impact, the corrosion at the interface between the ozonated water and the gaseous state is more than twice as fast as the contact with the ozonated water.

In the ozone treatment facility, various methods have been tried to eliminate such interface, but it is difficult to remove the interface due to the nature of the equipment in which the water flowing through the ozone contact tank or the ozone contact tank flows. The ozone contact tank is usually a concrete structure designed to flow water naturally and zigzag, and the water passing through it is introduced into the next process through the pipe. If a constant water pressure can be applied to the pipe, it is easy to eliminate the interface, but since the ozone contact tank and the rear pipe can not be pressurized, it is impossible to eliminate the interface between the ozone water and the gaseous state.

Patent Document 10-1051316, ozone-resistant polyurethane composition and method for producing the same

The present invention provides an ozone-resistant polyurethane composition having a high corrosion resistance even at an interface between ozone water and a gaseous phase, and a process for producing the same. The ozone-resistant polyurethane in the half-shell receiving invention of the present invention is not only resistant to ozone water even when it is completely contained in ozone water at a high concentration (8 ppm), but also in a state of being contained in the interface between the ozone water and the gaseous state Semi-submerged state), it has strong corrosion resistance against ozone.

The present invention also provides a polyurethane composition having good durability at physical properties such as hardness, recording and cracking at the interface between ozone water and gas at an ozone concentration of about 8 ppm. Another object of the present invention is to provide an ozone-resistant polyurethane composition which can be used as a lining, a sealant, a cushion body, a corrosion inhibitor, etc. in various valves and pipes as well as water supply and drainage facilities. It is still another object of the present invention to provide a method for producing the ozonized polyurethane composition in the bag receptacle.

The ozonized polyurethane composition according to the present invention comprises a diphenylmethane diisocyanate (MDI) represented by the following formula (1) and a polytetramethylene ether glycol (PTMEG) represented by the following formula (2) 100 parts by weight of a polyurethane prepolymer; 10 to 12 parts by weight of 1.4 butane diol (BDO: 1.4 Buthane Diol) represented by the following formula (3) as a hydroxyl group (OH) curing agent; And 1.6-2.2 parts by weight of benzophenone or benzotriazole as a UV stabilizer.

Figure pat00001

Figure pat00002

Figure pat00003

The ophthalmic polyurethane composition according to the present invention comprises 100 parts by weight of a polyurethane prepolymer composed of diphenylmethane diisocyanate represented by the above formula (1) and polytetramethylene ether glycol represented by the above formula (2), benzophenone or benzotriazole 1.6 to 2.2 parts by weight of a mixture are mixed and stirred at 80 to 90 DEG C for 20 minutes; And mixing 10 to 12 parts by weight of 1.4 butanediol represented by the above formula (3) in the above-mentioned solution.

The present invention has good durability in terms of properties such as recording and cracking at the interface between ozone water and gaseous state at the ozone concentration of about 8 ppm, and has good durability in the ozonated water line of advanced treatment water treatment plant, the present invention provides a novel ointment-resistant ozone-resistant polyurethane composition which can be used as a sealant, a cushion body, a corrosion inhibitor, and the like. Therefore, the present invention provides an effect of maximizing the service life of various facilities by protecting various facilities used in the ozonated water line from the strong oxidizing power of the ozonated water.

The present invention relates to an ozone-resistant polyurethane composition for use in an advanced treatment plant using ozone water having a concentration of ozone of 8 ppm or more and various valves and pipes used for advanced treatment sewage treatment plants from corrosion of ozonated water. In particular, ozone-resistant polyurethane compositions for use as anti-corrosive, sealant or cushioning materials for preventing ozone water corrosion in parts that are flooded in ozone water or in semi-flooded conditions at the interface between ozone water and gas .

Generally, polyurethane is a polymer excellent in durability, chemical resistance, water resistance, etc., and is attracting much attention not only industrially but also in commercial due to its advantage that it is used in various forms such as softness, hardness or paint form. Polyurethane is a chemical term for a compound having a urethane bond (-NH-CO-O-) chemically, and this urethane bond is a hydroxyl group (-OH) containing an isocyanate group (-NCO) . Here, the structure other than the urethane bond structure may be selected depending on the kind of isocyanate and polyol and the combination thereof, and products of various uses can be produced depending on the structure to be combined.

Polyurethane is a copolymer in which a soft segment having a glass transition temperature (Tg) lower than room temperature and a hard segment higher than room temperature are continuously connected. Since the two blocks do not melt each other, the phase separation occurs microscopically to form a domain. At room temperature, the hard segment acts as a rubber to suppress the flowability of the soft segment, acting as a rubber. The soft segment in the polyurethane elastomer is a linear polymer chain such as polyester or polyether, and the hard segment is a solid compound such as urethane group, urea.

The ozonized polyurethane composition of the present invention comprises a polyurethane prepolymer (DPI) composed of diphenylmethane diisocyanate (MDI) represented by the following formula (1) and polytetramethylene ether glycol (PTMEG) represented by the following formula 100 parts by weight; 10 to 12 parts by weight of 1.4 butane diol (BDO: 1.4 Buthane Diol) represented by the following formula (3) as a hydroxyl group (OH) curing agent; And 1.6-2.2 parts by weight of benzophenone or benzotriazole as a UV stabilizer.

(Formula 1)

Figure pat00004

(2)

Figure pat00005

(Formula 3)

Figure pat00006

The ozone-resistant polyurethane composition of the present invention comprises 100 parts by weight of a polyurethane prepolymer composed of diphenylmethane diisocyanate represented by the above formula (1) and polytetramethylene ether glycol represented by the above formula (2), with benzophenone or benzotriazole 1.6 to 2.2 Are mixed and stirred at 80 to 90 DEG C for 20 minutes; And mixing 10 to 12 parts by weight of 1.4 butanediol represented by the above formula (3) in the above-mentioned solution.

The polyurethane prepolymer was prepared by adding a polyol to a reactor capable of temperature control and speed control, adding isocyanate dropwise at 80 ° C with stirring at 120 rpm, reacting for 3 to 4 hours, and then reacting when the free NCO group content reached the theoretical value Terminated. As the curing agent, 1.4-butanediol represented by the above formula (3) is preferably used, and it is preferable to use benzophenone or benzotriazole as the UV stabilizer.

In the present invention, the hydroxyl group curing agent is used in an amount of 10 to 12 parts by weight based on 100 parts by weight of the polyurethane prepolymer. If the amount of the hydroxyl group-curing agent is less than 10 parts by weight, sufficient curing can not be obtained. If the amount of the hydroxyl group-curing agent is more than 12 parts by weight, the curing agent is excessively cured and the elasticity of the polyurethane decreases sharply. When the hardness is low and the elasticity is high, 10 to 11 parts by weight of the hydroxyl group curing agent is added, and the hardness is low but the hardness is high It is preferable to add 11 to 12 parts by weight of the hydroxyl group curing agent.

Table 1 shows a polyurethane prepolymer composed of diphenylmethane diisocyanate and polytetramethylene ether glycol as a first component, 1.4-butanediol as a hydroxyl group (OH) curing agent as a second component, and benzophenone Is expressed as the third component, and the specimens are prepared by varying the weight of each component. The results are as follows. The samples were immersed and semi-immersed in 8 ppm ozone water, and then recorded and cracked after 300 hours.

As shown in Table 1, in the case of half-immersion, recording or cracking occurred depending on the weight portion. In the case of submersion, recording or cracking did not occur. Particularly, in case of semi - immersion, recording and cracking occurred at the interface between ozone water and gas phase. It is considered that ozone in the ozonated water vaporized and transmitted a strong influence to the surface of the specimen. Based on these experiments, the ratio of the optimum weight portion to the weight portion of the first component, the second component and the third component was found.

Example Component [parts by weight] After 300 hours The first component The second component The third component Flooding Semi-immersion Prepolymer Hardener UV stabilizer record crack record crack One 100 9 1.4 none none Occur none 2 100 9 1.6 none none Slight occurrence none 3 100 9 1.8 none none none none 4 100 9 2.0 none none none none 5 100 9 2.2 none none Slight occurrence none 6 100 9 2.4 none none Occur none 7 100 10 1.4 none none Slight occurrence none 8 100 10 1.6 none none none none 9 100 10 1.8 none none none none 10 100 10 2.0 none none none none 11 100 10 2.2 none none none none 12 100 10 2.4 none none Slight occurrence none 13 100 11 1.4 none none Slight occurrence none 14 100 11 1.6 none none none none 15 100 11 1.8 none none none none 16 100 11 2.0 none none none none 17 100 11 2.2 none none none none 18 100 11 2.4 none none Slight occurrence none 19 100 12 1.4 none none Slight occurrence none 20 100 12 1.6 none none none none 21 100 12 1.8 none none none none 22 100 12 2.0 none none none none 23 100 12 2.2 none none none none 24 100 12 2.4 none none Slight occurrence Slight occurrence 25 100 13 1.4 none none Occur Slight occurrence 26 100 13 1.6 none none Slight occurrence Slight occurrence 27 100 13 1.8 none none none none 28 100 13 2.0 none none none none 29 100 13 2.2 none none Slight occurrence Slight occurrence 30 100 13 2.4 none none Occur Slight occurrence

Claims (2)

100 parts by weight of a polyurethane prepolymer composed of diphenylmethane diisocyanate represented by the following formula (1) and polytetramethylene ether glycol represented by the following formula (2);
10 to 12 parts by weight of 1,4-butanediol represented by the following formula (3); And
1.6-2.2 parts by weight of benzophenone or benzotriazole;
Wherein the ozone-containing polyurethane composition is in the form of an ozone-containing polyurethane composition for lining the valve, pipe or ozone contact tank used in an advanced treatment plant.
(Formula 1)
Figure pat00007

(2)
Figure pat00008

(Formula 3)
Figure pat00009
 100 parts by weight of a polyurethane prepolymer composed of diphenylmethane diisocyanate represented by the following formula (1) and polytetramethylene ether glycol represented by the following formula (2) is mixed with 1.6 to 2.2 parts by weight of benzophenone or benzotriazole, Stir for 20 minutes; And
Mixing 10 to 12 parts by weight of 1.4-butanediol represented by the following formula (3) in the above-mentioned cross-linking solution;
Wherein the ozone-containing polyurethane composition is in the form of an ozone-free polyurethane composition for the lining of a valve, pipe or ozone contact tank for use in an advanced treatment plant.
(Formula 1)
Figure pat00010

(2)
Figure pat00011

(Formula 3)
Figure pat00012
KR1020150112561A 2015-08-10 2015-08-10 Ozone Resistant Polyurethane Composition and Process of Preparing Same in using boundary of ozonewater and air KR20170018656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150112561A KR20170018656A (en) 2015-08-10 2015-08-10 Ozone Resistant Polyurethane Composition and Process of Preparing Same in using boundary of ozonewater and air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150112561A KR20170018656A (en) 2015-08-10 2015-08-10 Ozone Resistant Polyurethane Composition and Process of Preparing Same in using boundary of ozonewater and air

Publications (1)

Publication Number Publication Date
KR20170018656A true KR20170018656A (en) 2017-02-20

Family

ID=58265139

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150112561A KR20170018656A (en) 2015-08-10 2015-08-10 Ozone Resistant Polyurethane Composition and Process of Preparing Same in using boundary of ozonewater and air

Country Status (1)

Country Link
KR (1) KR20170018656A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101051316B1 (en) 2010-11-22 2011-07-22 한국수자원공사 Ozone resistant polyurethane composition and process of preparing same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101051316B1 (en) 2010-11-22 2011-07-22 한국수자원공사 Ozone resistant polyurethane composition and process of preparing same

Similar Documents

Publication Publication Date Title
EP1861445B1 (en) Fouling resistant polyurethanes, in particular for maritime use
JP5519128B2 (en) Polyurethane foam used as a carrier for water treatment
TW201004992A (en) Polyurethane foam and polishing pad
WO2009088456A3 (en) Impact-resistant polyurethanes
WO2010023885A1 (en) Method of manufacturing flexible polyurethane foam
JP2007177045A (en) Polyurethane resin forming composition, sealing material and hollow fiber membrane module
EP2585509A1 (en) Coated parts and use thereof
TW200842133A (en) Process for the preparation of PIPA polyols for the production of highly elastic flexible polyurethane foams
JP5490426B2 (en) Polyurethane foam for microbial immobilization support
JP2009220079A (en) Water treatment carrier
JP2022033191A (en) Flexible polyurethane foam for microorganism carrier and microorganism carrier
JP5354475B2 (en) Polyurethane resin-forming composition, sealing material, and hollow fiber membrane module
KR101051316B1 (en) Ozone resistant polyurethane composition and process of preparing same
JP5418804B2 (en) Urethane elastomer filler
KR20170018656A (en) Ozone Resistant Polyurethane Composition and Process of Preparing Same in using boundary of ozonewater and air
JP5627333B2 (en) Polyurethane composition for integral skin foam
JP2009185155A (en) Low rebound flexible polyurethane foam
JP2008031197A (en) Polyurethane resin-forming composition for sealant used for hollow fiber membrane module, and sealant for hollow fiber membrane module using the same composition
US20090203809A1 (en) Novel polyurethanes with a high water content, method for the production and application thereof
JP2017125191A (en) Sealant consisting of high heat resistant and high cut-off performance polyurethane foam
JP4828370B2 (en) Method for producing microbial carrier for water treatment
CN104178015B (en) Elastomer combined material for polyurethane spray coating and preparation method thereof
JPS6076525A (en) Urethane composition
JP2017057327A (en) Polyurethane foam for water treatment carrier
JP2016538387A (en) Polyurethane resin composition for hollow fiber membrane potting agent and hollow fiber membrane module

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application
E601 Decision to refuse application