CN104109373A - Modified nanometer titanium dioxide toughened nylon material and preparation method thereof - Google Patents
Modified nanometer titanium dioxide toughened nylon material and preparation method thereof Download PDFInfo
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- C09C1/0081—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
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Abstract
The invention discloses a preparation method of toughening a nylon material through modified nanometer titanium dioxide and belongs to the technical field of modification technology of nylon materials. The nylon material is prepared by employing nylon 66 as a base material with addition of modified nanometer titanium dioxide as a toughening agent and addition of other additives. The modified nanometer titanium dioxide is prepared by firstly preparing metal-doped nanometer titanium dioxide and carrying out a graft modification process to a surface of the metal-doped nanometer titanium dioxide with dendritic polymers, thereby obtaining a novel nanometer organic-inorganic composite toughening agent, wherein the dendritic polymers account for 5-30% of the toughening agent and the modified nanometer titanium dioxide toughening agent accounts for 0.05-0.5% of the nylon material. Compared with a nylon material in the prior art, The toughened nylon material prepared in the invention is greatly improved in various mechanical properties, wherein tensile yield strength, bending strength and notch impact strength are all increased by 5-20 times. In addition, the toughened nylon material is low in cost of employed raw materials, is little in an usage amount of the toughening agent, is suitable for industrial production and has a wide market prospect.
Description
Technical field:
The invention belongs to nylon material modification technology field.Be specifically related to the preparation method by modified nano-titanium dioxide tenacity nylon material, wherein toughner is the compound toughner of a kind of novel nano organic-inorganic.
Technical background:
Nylon is a kind of application engineering plastics very widely, along with the raising of people to the requirement of nylon material character.Add various auxiliary agents in order to improve the various mechanical properties of nylon material.Wherein toughner is the emphasis of research.
Toughner as toughening nylon is roughly divided into four classes: rubber elastomer, thermoplastic elastomer, rigidity organic copolymer, inorganic rigid filler.But not all elastomerics is all applicable to the toughness reinforcing of nylon.Nylon is a kind of crystalline high polymer with polarity, in general, and with the applicable nylon of elastomerics of polarity.Certainly, by graft copolymerization, in nonpolar elastic body macromolecular chain, introducing polar group is also feasible approach.
1. rubber elastomer: rubber elastomer is the desirable toughner of polymkeric substance.Be mainly that rubber has very high toughness, low especially Tg, can give plastics good anti-low temperature brittleness.As the rubber of nylon toughener, have EPM, EPDM, NBR, 38 chis etc., thermoplastic elastomer has SBS, SEBS, EVA, EAA, and using maximum is EPDM.Rubber, as the toughner of nylon, preferably first vulcanizes before use.Rubber is appropriately crosslinked, makes it by linear structure, become reticulated structure, just has excellent modified effect.
2. thermoplastic elastomer thermoplastic elastomer and rubber difference are exactly not need vulcanization crosslinking directly to use.Its elasticity approaches rubber, and thermoplastic elastomer is copolymerized macromolecule or graft copolymer.SBS is because the existence of divinyl in macromole has given SBS very high elasticity, and the elasticity of the different SBS of butadiene content is also different.SEBS is the product of SBS after hydrogenation, and the feature of this product maximum is that weathering resistance is stronger than SBS.Thermoplastic elastomer toughening nylon and rubber toughening nylon also have certain difference in performance, and the rigid nature such as the former flexural strength are high compared with the latter.
3. to can not show a candle to elastomeric research so extensive for the toughness reinforcing research of rigidity organic polymer Rigid Organic Fillers.The organic macromolecule kind that nylon is played to toughening effect is not a lot, as liquid crystal polymer class.But from toughness reinforcing principle, the polymkeric substance lower than nylon has certain toughening effect to nylon, as PP, PE, ABS etc.The toughening effect of this base polymer is not as elastomerics.
4. rigid inorganic particle, when inorganic filler particle size reaches nano-grade size, has certain toughening effect, as CaCO3, talcum powder, polynite, wollastonite etc.Rigid particles has certain toughening effect to nylon, can improve the rigidity of nylon, but it is remarkable to be not so good as elastomeric toughening effect.
If obtain good toughness, tenacity increased nylon that rigidity is high, it is very necessary adopting composite toughing agent or toughness reinforcing enhancing Composite technology.The present invention adopts modified nano-titanium dioxide as toughner, and this is the compound toughner of a kind of organic-inorganic, and its advantage is that consumption is few, and the various mechanical properties of gained nylon material are excellent.
Summary of the invention:
The toughness reinforcing nylon material of nanometer that the object of this invention is to provide a kind of mechanical property excellence.In the situation that use the seldom toughner of amount, can reach good toughening effect.With low cost, technique is simple, is applicable to suitability for industrialized production.
The present invention can be achieved through the following technical solutions: a kind of by modified nano-titanium dioxide tenacity nylon material and preparation method thereof, it is characterized in that: it comprises following raw material nylon, modified nano-titanium dioxide toughner, auxiliary agent.Above-mentioned several raw materials are carried out to pre-mixing, then melt extruded by twin screw extruder.Enter in water coolingly, pelletizing, dries, and obtains product.
The preparation method of wherein said modified nano-titanium dioxide toughner is as follows: first prepare metal-doped nano titanium oxide, then carry out grafting with dendritic macromole and obtain new modified nano titanium oxide toughner.
Wherein said metal-doped nano titanium oxide preparation method as follows: various metal-salts are added to dehydrated alcohol, tetra-n-butyl titanate, nitric acid and water make in colloidal sol by certain proportioning, colloidal sol is placed in to constant temperature oven dries, calcination, and grind and obtain the nano-titanium dioxide powder that iron adulterates.
Wherein said dendritic macromole is polyamide-amide (PAMAM), and that the present invention uses is the 5th generation molecule G5.0PAMAM, the 7th generation molecule G7.0PAMAM, one or more mixing in the tenth generation molecule G10.0PAMAM.
By metal-doped nano titanium oxide, than pure titanium dioxide, there is good dispersing property, solved the shortcoming that titanium dioxide is easily reunited, and when carrying out grafting with dendritic macromole, there is a more binding site, more various bonding mode, dendritic macromole combines with the inorganic nano titanium dioxide of rigidity, in nylon material, disperse to form island structure, thereby make the modified nano-titanium dioxide toughner in the present invention there is excellent toughness reinforcing performance.
The present invention compared with prior art, there is following apparent outstanding feature and remarkable advantage: what the present invention adopted is the compound toughening technology of novel organic-inorganic, than single toughening technology, nylon material mechanical property improves significantly, and the addition of toughner still less.Be conducive to add other auxiliary agents in order to improve other performances of nylon material.And technique is relatively simple, with low cost, be applicable to suitability for industrialized production, there are wide market outlook.
Embodiment:
Embodiment 1,
Step 1: the preparation of modified nano-titanium dioxide toughner, according to mass ratio, be dehydrated alcohol: tetra-n-butyl titanate: nitric acid (1: 4): water: iron nitrate=700: 80: 2.5: 8: 3 proportioning makes colloidal sol, colloidal sol is placed in to constant temperature oven dries, calcination, and grind and obtain the nano-titanium dioxide powder that iron adulterates.Nano-titanium dioxide powder and the dendritic macromole polyamide-amine (G5.0PAMAM) of iron doping are added in acetonitrile, at 80 ℃, stir 8 hours, suction filtration, dries, and obtains modified nano-titanium dioxide toughner.
Step 2: tenacity nylon material preparation is 600 parts according to weight part note nylon, 2 parts of the modified nano-titanium dioxide toughner of being prepared by step 1,30 parts of auxiliary agents mix, and deliver to twin screw extruder melting coextrusion.Enter in water coolingly, pelletizing, dries, and obtains tenacity nylon material.
Embodiment 2,
Step 1: the preparation of modified nano-titanium dioxide toughner, according to mass ratio, be dehydrated alcohol: tetra-n-butyl titanate: nitric acid (1: 4): water: ammonium meta-vanadate=700: 80: 3: 8: 4 proportioning makes colloidal sol, colloidal sol is placed in to constant temperature oven dries, calcination, and grind and obtain the nano-titanium dioxide powder that vanadium adulterates.Nano-titanium dioxide powder and the dendritic macromole polyamide-amine (G7.0PAMAM) of vanadium doping are added in dimethylbenzene and tetrahydrofuran (THF) mixed solvent, at 110 ℃, stir 4 hours, suction filtration, dries, and obtains modified nano-titanium dioxide toughner.
Step 2: tenacity nylon material preparation is 600 parts according to weight part note nylon, 1 part of the modified nano-titanium dioxide toughner of being prepared by step 1,30 parts of auxiliary agents mix, and deliver to twin screw extruder melting coextrusion.Enter in water coolingly, pelletizing, dries, and obtains tenacity nylon material.
Embodiment 3,
Step 1: the preparation of modified nano-titanium dioxide toughner, according to mass ratio, be dehydrated alcohol: tetra-n-butyl titanate: nitric acid (1: 4): water: nickelous nitrate=650: 80: 3: 8: 3 proportioning makes colloidal sol, colloidal sol is placed in to constant temperature oven dries, calcination, and grind and obtain the nano-titanium dioxide powder that nickel adulterates.Nano-titanium dioxide powder and the dendritic macromole polyamide-amine (G10.0PAMAM) of nickel doping are added in dimethylbenzene and acetonitrile mixed solvent, at 100 ℃, stir 6 hours, suction filtration, dries, and obtains modified nano-titanium dioxide toughner.
Step 2: tenacity nylon material preparation is 600 parts according to weight part note nylon, 3 parts of the modified nano-titanium dioxide toughner of being prepared by step 1,30 parts of auxiliary agents mix, and deliver to twin screw extruder melting coextrusion.Enter in water coolingly, pelletizing, dries, and obtains tenacity nylon material.
Table one
Claims (8)
1. by the toughness reinforcing nylon material of modified nano-titanium dioxide, it is characterized in that: it comprises following raw material nylon, modified nano-titanium dioxide toughner, auxiliary agent; Above-mentioned several raw materials are carried out to pre-mixing, then by twin screw extruder melting coextrusion; Enter in water coolingly, pelletizing, dries, and obtains product.
2. a modified nano-titanium dioxide toughner claimed in claim 1, it is characterized in that: the preparation method of modified nano-titanium dioxide toughner is, various metal-salts are added to dehydrated alcohol, tetra-n-butyl titanate, in nitric acid and water, mix and make colloidal sol, colloidal sol is placed in to constant temperature oven and dries, calcination, and grind and obtain metal-doped nano-titanium dioxide powder; Then metal-doped nano-titanium dioxide powder and dendritic macromole are joined in organic solvent, at 80～110 ℃, heated and stirred is 4～8 hours, and suction filtration is dried, and obtains modified nano-titanium dioxide toughner.
3. the preparation method of modified nano-titanium dioxide toughner according to claim 2, is characterized in that: described doping metals is aluminium, iron, one or more mixing in nickel; Content is 10～50% of titanium dioxide weight.
4. the preparation method of modified nano-titanium dioxide toughner according to claim 2, it is characterized in that: described dendritic macromole is polyamide-amide (PAMAM), that the present invention uses is the 5th generation molecule G5.0PAMAM, the 7th generation molecule G7.0PAMAM, one or more in the tenth generation molecule G10.0PAMAM are mixed, and add-on is 5～30% of titanium dioxide weight.
5. the preparation method of modified nano-titanium dioxide toughner according to claim 2, is characterized in that: organic solvent used is methyl alcohol, dimethylbenzene, tetrahydrofuran (THF), one or more mixing in acetonitrile.
6. according to claim 1 a kind of by the toughness reinforcing nylon material of modified nano-titanium dioxide, it is characterized in that: the add-on of modified nano-titanium dioxide toughner is 0.05～0.5% of nylon weight.
7. according to claim 1 a kind of by the toughness reinforcing nylon material of modified nano-titanium dioxide, it is characterized in that: auxiliary agent is 3-r-chloropropyl trimethoxyl silane, 3-aminopropyl triethoxysilane, methacrylic acid, methylene-succinic acid, antioxidant 1010, carbon black, paraffin, stearic acid, oleic acid, several mixing in naphthenic oil, add-on is 1～10% of nylon weight.
8. according to claim 1 a kind of by the toughness reinforcing nylon material of modified nano-titanium dioxide, it is characterized in that: double-screw extruder screw melt temperature is 210～280 ℃, screw speed is 25～50 revs/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310134816.9A CN104109373A (en) | 2013-04-18 | 2013-04-18 | Modified nanometer titanium dioxide toughened nylon material and preparation method thereof |
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| CN201310134816.9A CN104109373A (en) | 2013-04-18 | 2013-04-18 | Modified nanometer titanium dioxide toughened nylon material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115678271A (en) * | 2022-11-02 | 2023-02-03 | 常州大学 | Preparation method of bio-based polyamide vegetable dye color master batch |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1421485A (en) * | 2001-11-29 | 2003-06-04 | 浙江工业大学 | Toughened composite polymer material and its prepn |
| CN102585289A (en) * | 2012-02-24 | 2012-07-18 | 常州龙途新材料科技有限公司 | Dendritic macromolecular functional titanium dioxide micro particle toughening agent and epoxy resin |
-
2013
- 2013-04-18 CN CN201310134816.9A patent/CN104109373A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1421485A (en) * | 2001-11-29 | 2003-06-04 | 浙江工业大学 | Toughened composite polymer material and its prepn |
| CN102585289A (en) * | 2012-02-24 | 2012-07-18 | 常州龙途新材料科技有限公司 | Dendritic macromolecular functional titanium dioxide micro particle toughening agent and epoxy resin |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115678271A (en) * | 2022-11-02 | 2023-02-03 | 常州大学 | Preparation method of bio-based polyamide vegetable dye color master batch |
| CN115678271B (en) * | 2022-11-02 | 2023-08-22 | 常州大学 | Preparation method of bio-based polyamide plant dye masterbatch |
| WO2023168968A1 (en) * | 2022-11-02 | 2023-09-14 | 常州大学 | Preparation method for bio-based polyamide plant dye color master batch |
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