CN108864507A - A kind of polyurethane seal strip for refrigerator door production technology - Google Patents
A kind of polyurethane seal strip for refrigerator door production technology Download PDFInfo
- Publication number
- CN108864507A CN108864507A CN201810749087.0A CN201810749087A CN108864507A CN 108864507 A CN108864507 A CN 108864507A CN 201810749087 A CN201810749087 A CN 201810749087A CN 108864507 A CN108864507 A CN 108864507A
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- refrigerator door
- polyurethane
- production technology
- seal strip
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/08—Parts formed wholly or mainly of plastics materials
- F25D23/082—Strips
- F25D23/087—Sealing strips
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Refrigerator Housings (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a kind of polyurethane seal strip for refrigerator door production technology, the substance including following parts by weight：60-80 parts of polyolefin polyhydric alcohol,20-30 parts of polymer polyatomic alcohol,2-5 parts of antioxidant,10-15 parts of nano-titanium dioxide,1-3 parts of plasticiser,4-8 parts of modifying agent,1-2 parts of dispersing agent and 0.5-1.5 parts of catalyst,There is elasticity well by polyurethane seal strip for refrigerator door prepared by the production technology,Good sealing effect can be played,And preparation method,Processing technology is simple,High production efficiency,It can be good at being fused in polyurethane strip of paper used for sealing by the nano-titanium dioxide that modifying agent and dispersing agent are handled,The nano-titanium dioxide of rutile-type can effectively absorb some ultraviolet lights and other luminous energy,Reduce illumination adverse effect caused by polyurethane strip of paper used for sealing,Extend the service life of polyurethane strip of paper used for sealing,And nano-titanium dioxide is white powder,It can be good at blending with polyurethane strip of paper used for sealing,Polyurethane strip of paper used for sealing is not influenced carries out toning operation.
Description
Technical field
The present invention relates to seal strip for refrigerator door production technical fields more particularly to a kind of polyurethane seal strip for refrigerator door to produce work
Skill.
Background technique
Sealing strip is to seal a kind of thing, it is made to be not easy to open, and plays damping, waterproof, sound insulation, heat-insulated, dust-proof, solid
The product for the effects of determining, the sealing strip sold currently on the market are mostly rubber material, mechanical performance, wearability and high pressure resistant
Performance is poor.Polyurethane elastomeric materials have good elastic property, wearability and high voltage performance etc., and performance diversity makes
It is frequently used in especially household appliances manufacturing, and polyurethane used in refrigerator doors is strict with, and needs in refrigerator
Excellent resilience performance is kept during use, guarantees that the air-tightness of refrigerator is unaffected, but in sealing strip long-time use process, it is close
Strip of paper used for sealing is influenced by illumination, accelerates the aging of polyurethane, so that sealing strip is easy to be hardened, affects the close of refrigerator doors
Feng Xing.
Therefore, we have proposed a kind of polyurethane seal strip for refrigerator door production technologies for solving the above problems.
Summary of the invention
The shortcomings that being easy aging the purpose of the present invention is to solve sealing strip, and a kind of polyurethane refrigerator door seal proposed
Production technology.
A kind of polyurethane seal strip for refrigerator door production technology, includes the following steps：
S1：Raw material is weighed according to the ratio of following parts by weight：60-80 parts of polyolefin polyhydric alcohol, polymer polyatomic alcohol 20-30
Part, 2-5 parts of antioxidant, 10-15 parts of nano-titanium dioxide, 1-3 parts of plasticiser, 4-8 parts of modifying agent, 1-2 parts of dispersing agent and
0.5-1.5 parts of catalyst；
S2：Modifying agent and dispersing agent are add to deionized water, heating water bath simultaneously stirs a period of time, so that solid dissolution
To mixed solution, then nano-titanium dioxide is added in mixed solution, insulated and stirred is for a period of time；
S3：Mixture in S2 is filtered, and filter residue is washed using deionized water, filter residue is dried after washing
Processing, is ground after drying, and grinding, which finishes, carries out sieving processing, obtains modified nano-titanium dioxide；
S4：Polyolefin polyhydric alcohol, polymer polyatomic alcohol, antioxidant, plasticiser and catalyst are mixed at normal temperature,
Modified nano-titanium dioxide is added in mixed process, and stirs a period of time, obtains mixed material；
S5：Mixed material is heated to 50 DEG C -60 DEG C, and material is injected into preset mold, obtains polyurethane after cooling
Seal strip for refrigerator door.
Preferably, the polyolefin polyhydric alcohol is that end hydroxy butadiene polyalcohol, end hydroxy butadiene-acrylonitrile are more
One of first alcohol is a variety of.
Preferably, the polymer polyatomic alcohol is one of polyglycol ether, polypropylene glycol ether, polybutadiene alcohol ether or more
Kind.
Preferably, the antioxidant is 2,6- di-tert-butylphenol or double salicylidenediamines.
Preferably, the plasticiser is phthalic acid two (2- ethyl hexyl) ester, and catalyst is the production of Mai Tu company of the U.S.
A-338.
Preferably, the modifying agent is cetyl trimethylammonium bromide, and dispersing agent is calgon.
Preferably, the heating temperature in the S2 is 70 DEG C -90 DEG C, mixing time 2h-4h.
Preferably, the mesh number of sieve is -360 mesh of 300 mesh in the S3.
Preferably, mixing time is 4h-8h in the S4.
Preferably, the crystal form of the nano-titanium dioxide is rutile-type.
The beneficial effects of the invention are as follows：
1, there is elasticity well by polyurethane seal strip for refrigerator door prepared by the production technology, sealing effect well can be played
Fruit, and preparation method, processing technology is simple, high production efficiency.
2, antioxidant can effectively delay polyurethane strip of paper used for sealing to aoxidize, and extend the service life of polyurethane strip of paper used for sealing,
It can be good at being fused in polyurethane strip of paper used for sealing by the nano-titanium dioxide that modifying agent and dispersing agent are handled, rutile-type is received
Rice titanium dioxide can effectively absorb some ultraviolet lights and other luminous energy, reduce illumination bad shadow caused by polyurethane strip of paper used for sealing
It rings, extends the service life of polyurethane strip of paper used for sealing, and nano-titanium dioxide is white powder, be can be good at and polyurethane strip of paper used for sealing
It blends, does not influence polyurethane strip of paper used for sealing and carry out toning operation.
Specific embodiment
Combined with specific embodiments below the present invention is made further to explain.
In embodiment 1：
A kind of polyurethane seal strip for refrigerator door production technology, includes the following steps：
S1：Raw material is weighed according to the ratio of following parts by weight：60 parts of polyolefin polyhydric alcohol, 20 parts of polymer polyatomic alcohol, antioxygen
2 parts of agent, 10 parts of nano-titanium dioxide, 1 part of plasticiser, 4 parts of modifying agent, 1 part of dispersing agent and 0.5 part of catalyst；
S2：Modifying agent and dispersing agent are add to deionized water, heating water bath simultaneously stirs a period of time, so that solid dissolution
To mixed solution, then nano-titanium dioxide is added in mixed solution, insulated and stirred for a period of time, heating temperature 70
DEG C, mixing time 4h；
S3：Mixture in S2 is filtered, and filter residue is washed using deionized water, filter residue is dried after washing
Processing, is ground after drying, and grinding, which finishes, carries out sieving processing, and the mesh number of sieve is 300 mesh, obtains modification
Nano-titanium dioxide；
S4：Polyolefin polyhydric alcohol, polymer polyatomic alcohol, antioxidant, plasticiser and catalyst are mixed at normal temperature,
Modified nano-titanium dioxide is added in mixed process, and stirs a period of time, mixing time 4h obtains mixed material；
S5：Mixed material is heated to 50 DEG C, and material is injected into preset mold, obtains polyurethane refrigerator doors after cooling
Strip of paper used for sealing.
Wherein polyolefin polyhydric alcohol is end hydroxy butadiene polyalcohol, and polymer polyatomic alcohol is polyglycol ether, antioxygen
Agent is 2,6- di-tert-butylphenol, and plasticiser is phthalic acid two (2- ethyl hexyl) ester, and catalyst is raw for Mai Tu company of the U.S.
The A-338 of production, modifying agent are cetyl trimethylammonium bromide, and dispersing agent is calgon, the crystal form of nano-titanium dioxide
For rutile-type.
In embodiment 2：
A kind of polyurethane seal strip for refrigerator door production technology, includes the following steps：
S1：Raw material is weighed according to the ratio of following parts by weight：70 parts of polyolefin polyhydric alcohol, 25 parts of polymer polyatomic alcohol, antioxygen
4 parts of agent, 12 parts of nano-titanium dioxide, 2 parts of plasticiser, 8 parts of modifying agent, 2 parts of dispersing agent and 1.5 parts of catalyst；
S2：Modifying agent and dispersing agent are add to deionized water, heating water bath simultaneously stirs a period of time, so that solid dissolution
To mixed solution, then nano-titanium dioxide is added in mixed solution, insulated and stirred for a period of time, heating temperature 90
DEG C, mixing time 2h；
S3：Mixture in S2 is filtered, and filter residue is washed using deionized water, filter residue is dried after washing
Processing, is ground after drying, and grinding, which finishes, carries out sieving processing, and the mesh number of sieve is 360 mesh, obtains modification
Nano-titanium dioxide；
S4：Polyolefin polyhydric alcohol, polymer polyatomic alcohol, antioxidant, plasticiser and catalyst are mixed at normal temperature,
Modified nano-titanium dioxide is added in mixed process, and stirs a period of time, mixing time 8h obtains mixed material；
S5：Mixed material is heated to 60 DEG C, and material is injected into preset mold, obtains polyurethane refrigerator doors after cooling
Strip of paper used for sealing.
Wherein polyolefin polyhydric alcohol is end hydroxy butadiene-acrylonitrile polyalcohol, and polymer polyatomic alcohol is polypropylene glycol
Ether, antioxidant are double salicylidenediamines, and plasticiser is phthalic acid two (2- ethyl hexyl) ester, and catalyst is that the U.S. steps figure
The A-338 of company's production, modifying agent is cetyl trimethylammonium bromide, and dispersing agent is calgon, nano-titanium dioxide
Crystal form be rutile-type.
In embodiment 3：
A kind of polyurethane seal strip for refrigerator door production technology, includes the following steps：
S1：Raw material is weighed according to the ratio of following parts by weight：80 parts of polyolefin polyhydric alcohol, 30 parts of polymer polyatomic alcohol, antioxygen
3 parts of agent, 15 parts of nano-titanium dioxide, 3 parts of plasticiser, 6 parts of modifying agent, 1 part of dispersing agent and 1 part of catalyst；
S2：Modifying agent and dispersing agent are add to deionized water, heating water bath simultaneously stirs a period of time, so that solid dissolution
To mixed solution, then nano-titanium dioxide is added in mixed solution, insulated and stirred for a period of time, heating temperature 80
DEG C, mixing time 3h；
S3：Mixture in S2 is filtered, and filter residue is washed using deionized water, filter residue is dried after washing
Processing, is ground after drying, and grinding, which finishes, carries out sieving processing, and the mesh number of sieve is 320 mesh, obtains modification
Nano-titanium dioxide；
S4：Polyolefin polyhydric alcohol, polymer polyatomic alcohol, antioxidant, plasticiser and catalyst are mixed at normal temperature,
Modified nano-titanium dioxide is added in mixed process, and stirs a period of time, mixing time 6h obtains mixed material；
S5：Mixed material is heated to 55 DEG C, and material is injected into preset mold, obtains polyurethane refrigerator doors after cooling
Strip of paper used for sealing.
Wherein polyolefin polyhydric alcohol is end hydroxy butadiene-acrylonitrile polyalcohol, and polymer polyatomic alcohol is polypropylene glycol
Ether, antioxidant are double salicylidenediamines, and plasticiser is phthalic acid two (2- ethyl hexyl) ester, and catalyst is that the U.S. steps figure
The A-338 of company's production, modifying agent is cetyl trimethylammonium bromide, and dispersing agent is calgon, nano-titanium dioxide
Crystal form be rutile-type.
In embodiment 4：
A kind of polyurethane seal strip for refrigerator door production technology, includes the following steps：
S1：Raw material is weighed according to the ratio of following parts by weight：80 parts of polyolefin polyhydric alcohol, 30 parts of polymer polyatomic alcohol, antioxygen
3 parts of agent, 15 parts of nano-titanium dioxide, 3 parts of plasticiser, 6 parts of modifying agent, 1 part of dispersing agent and 1 part of catalyst；
S2：Modifying agent and dispersing agent are add to deionized water, heating water bath simultaneously stirs a period of time, so that solid dissolution
To mixed solution, then nano-titanium dioxide is added in mixed solution, insulated and stirred for a period of time, heating temperature 80
DEG C, mixing time 3h；
S3：Mixture in S2 is filtered, and filter residue is washed using deionized water, filter residue is dried after washing
Processing, is ground after drying, and grinding, which finishes, carries out sieving processing, and the mesh number of sieve is 320 mesh, obtains modification
Nano-titanium dioxide；
S4：Polyolefin polyhydric alcohol, polymer polyatomic alcohol, antioxidant, plasticiser and catalyst are mixed at normal temperature,
Modified nano-titanium dioxide is added in mixed process, and stirs a period of time, mixing time 6h obtains mixed material；
S5：Mixed material is heated to 55 DEG C, and material is injected into preset mold, obtains polyurethane refrigerator doors after cooling
Strip of paper used for sealing.
Wherein polyolefin polyhydric alcohol is end hydroxy butadiene polyalcohol, in end hydroxy butadiene-acrylonitrile polyalcohol
Mixture, polymer polyatomic alcohol is polyglycol ether, polypropylene glycol ether, the mixture in polybutadiene alcohol ether, and antioxidant is
Double salicylidenediamines, plasticiser are phthalic acid two (2- ethyl hexyl) ester, and catalyst is the A- of Mai Tu company of U.S. production
338, modifying agent is cetyl trimethylammonium bromide, and dispersing agent is calgon, and the crystal form of nano-titanium dioxide is golden red
Stone-type.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of polyurethane seal strip for refrigerator door production technology, which is characterized in that include the following steps：
S1：Raw material is weighed according to the ratio of following parts by weight：60-80 parts of polyolefin polyhydric alcohol, polymer polyatomic alcohol 20-30
Part, 2-5 parts of antioxidant, 10-15 parts of nano-titanium dioxide, 1-3 parts of plasticiser, 4-8 parts of modifying agent, 1-2 parts of dispersing agent and
0.5-1.5 parts of catalyst；
S2：Modifying agent and dispersing agent are add to deionized water, heating water bath simultaneously stirs a period of time, so that solid dissolution
To mixed solution, then nano-titanium dioxide is added in mixed solution, insulated and stirred is for a period of time；
S3：Mixture in S2 is filtered, and filter residue is washed using deionized water, filter residue is dried after washing
Processing, is ground after drying, and grinding, which finishes, carries out sieving processing, obtains modified nano-titanium dioxide；
S4：Polyolefin polyhydric alcohol, polymer polyatomic alcohol, antioxidant, plasticiser and catalyst are mixed at normal temperature,
Modified nano-titanium dioxide is added in mixed process, and stirs a period of time, obtains mixed material；
S5：Mixed material is heated to 50 DEG C -60 DEG C, and material is injected into preset mold, obtains polyurethane after cooling
Seal strip for refrigerator door.
2. a kind of polyurethane seal strip for refrigerator door production technology according to claim 1, which is characterized in that the polyolefin is more
First alcohol is one of end hydroxy butadiene polyalcohol, end hydroxy butadiene-acrylonitrile polyalcohol or a variety of.
3. a kind of polyurethane seal strip for refrigerator door production technology according to claim 1, which is characterized in that the polymer is more
First alcohol is one of polyglycol ether, polypropylene glycol ether, polybutadiene alcohol ether or a variety of.
4. a kind of polyurethane seal strip for refrigerator door production technology according to claim 1, which is characterized in that the antioxidant
For 2,6- di-tert-butylphenol or double salicylidenediamines.
5. a kind of polyurethane seal strip for refrigerator door production technology according to claim 1, which is characterized in that the plasticiser is
Phthalic acid two (2- ethyl hexyl) ester, catalyst are the A-338 of Mai Tu company of U.S. production.
6. a kind of polyurethane seal strip for refrigerator door production technology according to claim 1, which is characterized in that the modifying agent is
Cetyl trimethylammonium bromide, dispersing agent are calgon.
7. a kind of polyurethane seal strip for refrigerator door production technology according to claim 1, which is characterized in that adding in the S2
Hot temperature is 70 DEG C -90 DEG C, mixing time 2h-4h.
8. a kind of polyurethane seal strip for refrigerator door production technology according to claim 1, which is characterized in that sieve in the S3
Mesh number be -360 mesh of 300 mesh.
9. a kind of polyurethane seal strip for refrigerator door production technology according to claim 1, which is characterized in that stirred in the S4
Time is 4h-8h.
10. a kind of polyurethane seal strip for refrigerator door production technology according to claim 1, which is characterized in that the nanometer two
The crystal form of titanium oxide is rutile-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810749087.0A CN108864507A (en) | 2018-07-10 | 2018-07-10 | A kind of polyurethane seal strip for refrigerator door production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810749087.0A CN108864507A (en) | 2018-07-10 | 2018-07-10 | A kind of polyurethane seal strip for refrigerator door production technology |
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| Publication Number | Publication Date |
|---|---|
| CN108864507A true CN108864507A (en) | 2018-11-23 |
Family
ID=64300350
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|---|---|---|---|
| CN201810749087.0A Pending CN108864507A (en) | 2018-07-10 | 2018-07-10 | A kind of polyurethane seal strip for refrigerator door production technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113667190A (en) * | 2021-05-18 | 2021-11-19 | 广州城建职业学院 | Biodegradable modified starch-based toy material and preparation method of toy thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178812A (en) * | 1996-09-17 | 1998-04-15 | 国际壳牌研究有限公司 | Casted plastic potyurethane composition |
| CN106046317A (en) * | 2016-05-23 | 2016-10-26 | 万华化学集团股份有限公司 | Polyurethane composite material and polyurethane heat-preserving material prepared therefrom |
| CN106590514A (en) * | 2016-12-03 | 2017-04-26 | 范林虎 | Polyurethane sealant and preparation method thereof |
-
2018
- 2018-07-10 CN CN201810749087.0A patent/CN108864507A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178812A (en) * | 1996-09-17 | 1998-04-15 | 国际壳牌研究有限公司 | Casted plastic potyurethane composition |
| CN106046317A (en) * | 2016-05-23 | 2016-10-26 | 万华化学集团股份有限公司 | Polyurethane composite material and polyurethane heat-preserving material prepared therefrom |
| CN106590514A (en) * | 2016-12-03 | 2017-04-26 | 范林虎 | Polyurethane sealant and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113667190A (en) * | 2021-05-18 | 2021-11-19 | 广州城建职业学院 | Biodegradable modified starch-based toy material and preparation method of toy thereof |
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Application publication date: 20181123 |