CN108003601A - A kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material - Google Patents
A kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material Download PDFInfo
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- CN108003601A CN108003601A CN201711427215.1A CN201711427215A CN108003601A CN 108003601 A CN108003601 A CN 108003601A CN 201711427215 A CN201711427215 A CN 201711427215A CN 108003601 A CN108003601 A CN 108003601A
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- gasket seal
- seal material
- oxidized starch
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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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention discloses a kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material, starch is made after gelatinized corn starch and is aoxidized with sodium metaphosphate and potassium permanganate solution, with the graphene after vulcanization, aramid fiber forms compound, with polycarbonate glycol, different methyl diphenylene diisocyanate is main synthesis material, after synthesizing cross-linked Waterborne Polyurethane Prepolymer, with plasticizer, auxiliary agent is granulated after being kneaded cooling and shaping together, gasket seal material prepared by the present invention has toughness height, the advantages that light weight, and the method for preparing the gasket material is simple, process conditions are easily controllable.
Description
Technical field
The present invention relates to gasket material, and in particular, to one kind contains oxidized starch high-toughness polyurethane gasket sheet material
The preparation method of material.
Background technology
Makrolon can simply be divided into several classes such as aliphatic, aromatic series, in automobile, build as a kind of thermoplastic polymer
Build, have a wide range of applications in the industry such as electric appliance.Because its is nontoxic, transparent, corrosion resistant candle property is good, it is also applied in daily life, than
Such as safety glass, CD material.
Gasket seal is commercial plant static seal form the most general, therefore spacer seal is industrial production application again
One of most wide accessory.Seal quantity is thousands of used in general industry manufacturing enterprise, to large-scale petroleum chemical industry, electric power
It is then ten hundreds of Deng enterprise, and leakage is the failure mode that process units is most commonly seen in many industrial processes.With
The development of modern industrial production, each industrial department, especially Large Scale Petrochemical Enterprises, thermal power plant, nuclear power station and other
Industrial enterprise proposes more and more high requirement to the performance of gasket seal.
Hu Hongjiu exists《The preparation of blocked isocyanate crosslinking non-asbestos aramid fiber enhancing Latex Gasket Sheet Crosslinked material》
Using blocked isocyanate as crosslinking agent in one text, it is prepared for non-asbestos aramid fiber enhancing elastomer latex using copying to follow the example of and copies
Plate is taken, and illustrates its strengthening mechanism.The isocyanate groups of high activity are formed in aramid fiber, rubber latex and filler
Firm covalent bond is glued, and compensate for the deficiency of mechanical adhering force therebetween and Hydrogen bonding forces, the Main Mechanical of plate
Improve notable.But it is raw material that the gasket seal material, which employs carboxylic acrylonitrile butadiene rubber latex, due to carboxylic acrylonitrile butadiene rubber latex toughness not
By force, it is neither corrosion-resistant, but intolerant to abrasion, the gasket seal corrosion resistance and wearability produced are all bad, thereby using the longevity
Life is not grown.
The content of the invention
The defects of the object of the invention is exactly to make up prior art, improves toughness and mechanical strength, there is provided one kind contains
The preparation method of oxidized starch high-toughness polyurethane gasket seal material.
The present invention is achieved by the following technical solutions：
A kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material, comprises the following steps：
（1）5-10 weight starch and 30-50 parts by weight water are blended in after gelatinized corn starch is made in 25-35 DEG C of stirring, add 2-4 weights
Part sodium metaphosphate, 0.5-1 parts by weight potassium permanganate solutions are measured, 60-90 DEG C of reaction 2-4h of water-bath, obtains oxidized starch solution；
（2）1-5 parts by weight of graphite alkene is immersed in the concentrated sulfuric acid heat 5-20 it is small when after taking-up must with distilled water filtration washing 3-6 time
After vulcanizing graphene, by step（1）Oxidized starch solution, 20-30 parts by weight aramid fiber and the vulcanization graphene mixing of gained,
Be stirred continuously at 60-70 DEG C 1-3 it is small when, obtain homogeneous mixed solution, it is stand-by；
（3）By 25-30 weight part polycarbonate dihydric alcohol drying and dehydratings 12-24 it is small when after, be slowly added to 20-25 diphenyl methanes
Diisocyanate, and 0.02-1 parts by weight dibutyl tin laurates, in nitrogen atmosphere after 80-85 DEG C of reaction 15-20 minutes,
When reaction 3-4 is small after addition proper amount of acetone dilution, 60-70 DEG C is cooled to, adds 5-10 parts by weight dihydromethyl propionic acid, 5-7 weights
Measure 1,4 butanediol of part and step（2）It is stand-by when gains reaction 1-12 is small；
（4）By step（3）Gains and 30-50 parts by weight of plasticizer, 0.2-1 parts by weight auxiliary agents are added in mixer, fully
It is kneaded after stirring evenly at 200-220 DEG C 50-70 minutes, is then cooled and shaped, is granulated to be made described containing oxidation for 25-30 DEG C
Starch high-toughness polyurethane gasket seal material.
Step（1）The starch is cornstarch, one kind of tapioca or farina or mixing.
Step（1）The potassium permanganate solution is potassium permanganate and water 1:1 allocates and obtains.
Step（4）The plasticizer is trioctyl trimellitate (TOTM), one kind in dioctyl terephthalate.
Step（4）The auxiliary agent is calcium zinc stabilizer.
It is an advantage of the invention that：
Starch is made after gelatinized corn starch the present invention is aoxidized with sodium metaphosphate and potassium permanganate solution, with the graphite after vulcanization
Alkene, aramid fiber forms compound, using polycarbonate glycol, different methyl diphenylene diisocyanate as main synthesis material, closes
Into after crosslinking Waterborne Polyurethane Prepolymer, with plasticizer, auxiliary agent is granulated after being kneaded cooling and shaping together.The present invention will vulcanize graphite
Alkene carries out cladding using oxidized starch and forms cross-linked structure, big and the advantages of density is high using graphene specific surface area, is conducive to
Evenly, oxidized starch can be improved when forming performed polymer as crosslinking agent, aramid fiber at the same time for starch and other stock dispersions
The quality of moulding material is reduced while mechanical strength, plasticizer is added when being kneaded, improves the softening temperature of gasket material,
Mixing is employed, is cooled and shaped so that obtained gasket material has more excellent mechanical property, gasket prepared by the present invention
Sheet material has the advantages that toughness height, light weight, and the method for preparing the gasket material is simple, and process conditions are easily controllable.
Embodiment
A kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material, comprises the following steps：
（1）By 8 weight starch and 40 parts by weight water be blended in 30 DEG C stirring gelatinized corn starch is made after, add 3 parts by weight metaphosphoric acids
Sodium, 0.8 parts by weight potassium permanganate solution, when 75 DEG C of reactions 3 of water-bath are small, obtain oxidized starch solution；
（2）Will 3 parts by weight of graphite alkene immerse when heating 12 is small in the concentrated sulfuric acid after taking-up distilled water filtration washing must vulcanize stone 5 times
After black alkene, by step（1）The oxidized starch solution of gained, 25 parts by weight aramid fibers and vulcanization graphene mixing, at 65 DEG C
Be stirred continuously 2 it is small when, obtain homogeneous mixed solution, it is stand-by；
（3）By 27 weight part polycarbonate dihydric alcohol drying and dehydratings 18 it is small when after, be slowly added to 23 diphenylmethane diisocyanates
Ester, and 0.08 parts by weight dibutyl tin laurate, in nitrogen atmosphere after 83 DEG C of reactions 18 minutes, adds proper amount of acetone dilution
When reaction 3.5 is small afterwards, 65 DEG C are cooled to, adds 7 parts by weight dihydromethyl propionic acids, 6 parts by weight Isosorbide-5-Nitrae butanediols and step（2）Institute
Thing reaction 1-12 it is small when, it is stand-by；
（4）By step（3）Gains and 40 parts by weight of plasticizer, 0.5 parts by weight auxiliary agent are added in mixer, are sufficiently stirred
It is kneaded after uniformly at 2100 DEG C 60 minutes, is then cooled and shaped, is granulated and is gathered with being made described containing oxidized starch high tenacity for 27 DEG C
Urethane gasket seal material.
Step（1）The starch is cornstarch, one kind of tapioca or farina or mixing.
Step（1）The potassium permanganate solution is potassium permanganate and water 1:1 allocates and obtains.
Step（4）The plasticizer is trioctyl trimellitate (TOTM), one kind in dioctyl terephthalate.
Step（4）The auxiliary agent is calcium zinc stabilizer.
Claims (5)
1. a kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material, it is characterised in that including following
Step：
（1）5-10 weight starch and 30-50 parts by weight water are blended in after gelatinized corn starch is made in 25-35 DEG C of stirring, add 2-4 weights
Part sodium metaphosphate, 0.5-1 parts by weight potassium permanganate solutions are measured, 60-90 DEG C of reaction 2-4h of water-bath, obtains oxidized starch solution；
（2）1-5 parts by weight of graphite alkene is immersed in the concentrated sulfuric acid heat 5-20 it is small when after taking-up must with distilled water filtration washing 3-6 time
After vulcanizing graphene, by step（1）Oxidized starch solution, 20-30 parts by weight aramid fiber and the vulcanization graphene mixing of gained,
Be stirred continuously at 60-70 DEG C 1-3 it is small when, obtain homogeneous mixed solution, it is stand-by；
（3）By 25-30 weight part polycarbonate dihydric alcohol drying and dehydratings 12-24 it is small when after, be slowly added to 20-25 diphenyl methanes
Diisocyanate, and 0.02-1 parts by weight dibutyl tin laurates, in nitrogen atmosphere after 80-85 DEG C of reaction 15-20 minutes,
When reaction 3-4 is small after addition proper amount of acetone dilution, 60-70 DEG C is cooled to, adds 5-10 parts by weight dihydromethyl propionic acid, 5-7 weights
Measure 1,4 butanediol of part and step（2）It is stand-by when gains reaction 1-12 is small；
（4）By step（3）Gains and 30-50 parts by weight of plasticizer, 0.2-1 parts by weight auxiliary agents are added in mixer, fully
It is kneaded after stirring evenly at 200-220 DEG C 50-70 minutes, is then cooled and shaped, is granulated to be made described containing oxidation for 25-30 DEG C
Starch high-toughness polyurethane gasket seal material.
2. a kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material according to claim 1,
It is characterized in that, step（1）The starch is cornstarch, one kind of tapioca or farina or mixing.
3. a kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material according to claim 1,
It is characterized in that, step（1）The potassium permanganate solution is potassium permanganate and water 1:1 allocates and obtains.
4. a kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material according to claim 1,
It is characterized in that, step（4）The plasticizer is trioctyl trimellitate (TOTM), one kind in dioctyl terephthalate.
5. a kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material according to claim 1,
It is characterized in that, step（4）The auxiliary agent is calcium zinc stabilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711427215.1A CN108003601A (en) | 2017-12-26 | 2017-12-26 | A kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711427215.1A CN108003601A (en) | 2017-12-26 | 2017-12-26 | A kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material |
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| Publication Number | Publication Date |
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| CN108003601A true CN108003601A (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711427215.1A Pending CN108003601A (en) | 2017-12-26 | 2017-12-26 | A kind of preparation method containing oxidized starch high-toughness polyurethane gasket seal material |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585485A (en) * | 2012-01-06 | 2012-07-18 | 华南理工大学 | Starch/thermoplastic polyurethane (TPU) composite material with high mechanical property and preparation method thereof |
-
2017
- 2017-12-26 CN CN201711427215.1A patent/CN108003601A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585485A (en) * | 2012-01-06 | 2012-07-18 | 华南理工大学 | Starch/thermoplastic polyurethane (TPU) composite material with high mechanical property and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘万辉主编: "《复合材料 第2版》", 31 March 2017, 哈尔滨工业大学出版社 * |
| 桂立丰总主编: "《机械工程材料测试手册 物理金相卷》", 30 November 1999, 辽宁科学技术出版社 * |
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| PB01 | Publication | ||
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Application publication date: 20180508 |