CN102643408A - Preparation method of polyurethane elastomer for engineering tire treads - Google Patents
Preparation method of polyurethane elastomer for engineering tire treads Download PDFInfo
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- CN102643408A CN102643408A CN2012101241472A CN201210124147A CN102643408A CN 102643408 A CN102643408 A CN 102643408A CN 2012101241472 A CN2012101241472 A CN 2012101241472A CN 201210124147 A CN201210124147 A CN 201210124147A CN 102643408 A CN102643408 A CN 102643408A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a preparation method of polyurethane elastomer for engineering tire treads. The polyurethane elastomer is prepared from polytetramethylene glycol with the relative molecular weight of 2000, polyether triol EP-330N with the relative molecular weight of 4800, MDI (diphenylmethane diisocyanate), 1,4-butanediol and dibutyltin dilaurate. The polyurethane elastomer for the engineering tire treads prepared by the method has the advantages of no pollution, small wear, low rolling resistance and thermogenesis and excellent tearing resistance. Additionally, the tensile strength of the polyurethane elastomer reaches 31Mpa, the elongation at break of the polyurethane elastomer reaches 518%, the wear volume of the polyurethane elastomer reaches 0.0158cm3 (1.61km)-1, and the compression fatigue temperature rise of the polyurethane elastomer is only 9.2 DEG C.
Description
Technical field
The present invention relates to a kind of technology of preparing category of polyurethane elastomer, specifically, relate to a kind of living technology of preparing category that is used for the polyurethane elastomer that engineering tire tread uses.
Background technology
At present, it is tyre surface that the engineering tyre of producing on the market generally adopts rubber, and the rubber tyre life-span is short, and wear resistance and tear resistance are relatively poor, and the rubber engineering tyre load is limited, the phenomenon of blowing out often occurs; In production and use, produce a lot of waste materials, the recycling difficulty is bigger after scrapping, and causes environmental pollution in the use easily; Its production technique is very complicated, and investment of production equipment is very high.Polyurethane elastomer is a kind of very special elastomerics, and its performance range is very wide, is the macromolecular material between plastics and rubber.With the rubber phase ratio, it has excellent mechanical strength, good wear resistance, and high elongation, the heavy burden ability is strong, and the hardness variable range is big, good damping effect, dynamic heat build up is low, and rolling resistance is little, simultaneously the excellent properties of oil resistant and chemical mediator.So replace rubber applications on tire tread is made with polyurethane elastomer, good application prospects is arranged, be the ideal material of green tire.
Summary of the invention
Realize that the method for preparing polyurethane elastic body that is used for engineering tire tread of the present invention is:
The starting material that the present invention is used for the polyurethane elastomer of engineering tire tread have: polytetrahydrofuran diol, relative molecular weight are 2000; Polyether-tribasic alcohol, relative molecular weight are 4800; '-diphenylmethane diisocyanate; 1, the 4-butyleneglycol; Dibutyl tin dilaurate.
The elastic polyurethane preparation process that is used for engineering tire tread is that two-step approach is synthetic, and isocyano-content is set at 3%-7% in the prepolymer, and raw material is pressed the preparation of column weight amount per-cent:
More than four kinds of raw-material weight per-cent sums be 100%, the catalyzer dibutyl tin dilaurate is 0.23% of a starting material total amount
Preparation technology at first adds polytetrahydrofuran diol in the there-necked flask, and oil bath is heated to 120 ℃-130 ℃, under the vacuum condition, starts stirring; Dehydration 2h-3h is cooled to 55 ℃-65 ℃ then, adds the MDI that measures; Let its natural intensification 10min--15min, be heated to 70 ℃-85 ℃, isothermal reaction 2h-3h; Back sampling titrimetry isocyano-NCO content reaches preset value 3%-7% and gets final product stopped reaction, subsequently vacuumize degassing bubble 20min-40min; Be cooled to 55 ℃-65 ℃, discharging, the prepolymer preparation is accomplished, i.e. the A component; The prepolymer A component that measures is warming up to 75 ℃-85 ℃ in there-necked flask; Vacuum defoamation 30min-45min is cooled to 55 ℃-65 ℃ then, the good polyether-tribasic alcohol that proportions, 1 of preheating under 55 ℃ of-65 ℃ of conditions; 4-butyleneglycol, dibutyl tin dilaurate are poured in the there-necked flask; Vacuum stirring 3～7min pours the material that mixes in the mould into casting then.
More excellent: production technique is earlier polytetrahydrofuran diol to be added in the there-necked flask, and oil bath is heated to 130 ℃, starts stirring under the vacuum condition, dehydration 3h; Be cooled to 60 ℃ then, add the MDI measure, let its natural intensification 15min; Slowly be heated to 80 ℃, isothermal reaction 2.5h, back sampling titrimetry-NCO content; Reach preset value 3%-7% and get final product stopped reaction, vacuumize de-bubbled 30min subsequently; Be cooled to 60 ℃, discharging, the prepolymer preparation is accomplished, i.e. the A component; The prepolymer A component that measures is warming up to 80 ℃ in there-necked flask, vacuum defoamation 40min is cooled to 60 ℃ then; The good polyether-tribasic alcohol that proportions, 1 of preheating under 60 ℃ of conditions; 4-butyleneglycol, dibutyl tin dilaurate are poured in the there-necked flask, and vacuum stirring 3～4min pours the material that mixes in advance at 55 ℃-65 ℃ into then; In the good mould of 60 ℃ of preheatings that more excellent is, casting.
The polyurethane elastomer that is used for engineering tire tread of the present invention has been compared advantage with existing rubber engineering tire tread:
1. physical strength, wear resistance obviously improve, and rolling resistance obviously reduces;
2. production technique is liquid phase processing, and complete processing is simple;
3. in use do not have obnoxious flavour and discharge,, belong to the environment-friendly and green tire tread environment and body harmless.
Embodiment
Embodiment 1
The polyurethane elastomer that is used for engineering tire tread is synthetic by two-step approach, and the isocyano-content of prepolymer is set me 3%, and proportioning raw materials is by following weight percent configuration:
More than four kinds of raw-material weight per-cent sums be 100%, the catalyzer dibutyl tin dilaurate is 0.23% of a starting material total amount
After proportioning raw materials is selected, carry out concrete production technique:
At first polytetrahydrofuran diol is added in the there-necked flask, oil bath is heated to 125, starts stirring under the vacuum condition, dehydration 2.5h; Be cooled to 60 ℃ then, add the MDI measure, let its natural intensification 15min; Be heated to 80 ℃, isothermal reaction 2h, back sampling titrimetry-NCO content; Reach preset value and get final product stopped reaction, subsequently under the vacuum condition, de-bubbled 30min; Be cooled to 60 ℃, discharging, the prepolymer preparation is accomplished, i.e. the A component.The prepolymer A component that measures is warming up to 80 ℃ in there-necked flask; Vacuum defoamation 30min is cooled to 60 ℃ then, the good polyether-tribasic alcohol that proportions, 1 of preheating under 60 ℃ of conditions; 4-butyleneglycol, dibutyl tin dilaurate are poured in the there-necked flask; Vacuum stirring 4min pours the material that mixes in advance in the good mould of 60 ℃ of preheatings casting then.Concrete effect is seen table 1.
Embodiment 2
The polyurethane elastomer that is used for engineering tire tread is synthetic by two-step approach, and the isocyano-content of prepolymer is set me 4%, and proportioning raw materials is by following weight percent configuration:
More than four kinds of raw-material weight per-cent sums be 100%, the catalyzer dibutyl tin dilaurate is 0.23% of a starting material total amount
After proportioning raw materials is selected, carry out concrete production technique:
At first polytetrahydrofuran diol is added in the there-necked flask, oil bath is heated to 130 ℃, under the vacuum condition, starts stirring; Dehydration 2.5h is cooled to 59 ℃ then, adds the MDI that measures; Let its natural intensification 15min, slowly be heated to 83 ℃, isothermal reaction 2h; Sampling titrimetry-NCO content in back reaches preset value and gets final product stopped reaction, subsequent degassifying using vacuum bubble 20min; Be cooled to 55 ℃, discharging, the prepolymer preparation is accomplished, i.e. the A component.The prepolymer A component that measures is warming up to 79 ℃ in there-necked flask; Vacuum defoamation 30min is cooled to 59 ℃ then, the good polyether-tribasic alcohol that proportions, 1 of preheating under 59 ℃ of conditions; 4-butyleneglycol, dibutyl tin dilaurate are poured in the there-necked flask; Vacuum stirring 3min pours the material that mixes in the mould that preheating is good under 59 ℃ of conditions into casting then.Concrete effect is seen table 1.
Embodiment 3
The polyurethane elastomer that is used for engineering tire tread is synthetic by two-step approach, and the isocyano-content of prepolymer is set me 6%, and proportioning raw materials is by following weight percent configuration:
More than four kinds of raw-material weight per-cent sums be 100%, the catalyzer dibutyl tin dilaurate is 0.23% of a starting material total amount
After proportioning raw materials is selected, carry out concrete production technique:
At first polytetrahydrofuran diol is added in the there-necked flask, oil bath is heated to 120 ℃, under the vacuum condition, starts stirring; Dehydration 3h is cooled to 65 ℃ then, adds the MDI that measures; Let its natural intensification 15min, slowly be heated to 75 ℃, isothermal reaction 2.5h; Sampling titrimetry-NCO content in back reaches preset value and gets final product stopped reaction, vacuum outgas bubble 40min; Be cooled to 65 ℃, discharging, the prepolymer preparation is accomplished, i.e. the A component.The prepolymer A component that measures is warming up to 75 ℃ in there-necked flask; Vacuum defoamation 30min is cooled to 65 ℃ then, the good polyether-tribasic alcohol that proportions, 1 of preheating under 65 ℃ of conditions; 4-butyleneglycol, dibutyl tin dilaurate are poured in the there-necked flask; Vacuum stirring 3min pours the material that mixes in advance in the good mould of 65 ℃ of preheatings casting then.Concrete effect is seen table 1.
Embodiment 4
The polyurethane elastomer that is used for engineering tire tread is synthetic by two-step approach, and the isocyano-content of prepolymer is set me 7%, and proportioning raw materials is by following weight percent configuration:
Above raw-material weight per-cent sum is 100%, and the catalyzer dibutyl tin dilaurate is 0.23% of a starting material total amount
After proportioning raw materials is selected, carry out concrete production technique:
At first polytetrahydrofuran diol is added in the there-necked flask, oil bath is heated to 120 ℃, under the vacuum condition, starts stirring; Dehydration 3h is cooled to 62 ℃ then, adds the MDI that measures; Let its natural intensification 15min, slowly be heated to 82 ℃, isothermal reaction 2h; Sampling titrimetry-NCO content in back reaches and gets final product stopped reaction about preset value, subsequent degassifying using vacuum bubble 40min; Be cooled to 62 ℃, discharging, the prepolymer preparation is accomplished, i.e. the A component.The prepolymer A component that measures is warming up to 82 ℃ in there-necked flask; Vacuum defoamation 30min is cooled to 62 ℃ then, the good polyether-tribasic alcohol that proportions, 1 of preheating under 63 ℃ of conditions; 4-butyleneglycol, dibutyl tin dilaurate are poured in the there-necked flask; Vacuum stirring 3min pours the material that mixes in advance in the good mould of 63 ℃ of preheatings casting then.Concrete effect is seen table 1.
Table 1: polyurethane elastomer tyre surface and rubber tread performance comparison
By visible in the table 1, its each performance of polyurethane elastomer that is used for engineering tire tread of the present invention all is significantly increased, and cost is similar with the rubber tread that often has.
Claims (2)
1. an engineering tire tread is used method for preparing polyurethane elastic body, it is characterized in that: starting material are pressed the configuration of column weight amount per-cent:
More than four kinds of raw-material weight per-cent sums be 100%
The catalyzer dibutyl tin dilaurate is 0.23% of above four kinds of starting material gross weights;
And the relative molecular weight of above-mentioned starting material polytetrahydrofuran diol is 2000; The relative molecular weight of polyether-tribasic alcohol EP-330N is 4800;
Preparation technology at first adds polytetrahydrofuran diol in the there-necked flask, and oil bath is heated to 120 ℃-130 ℃, under the vacuum condition, starts stirring; Dehydration 2h-3h is cooled to 55 ℃-65 ℃ then, adds the MDI that measures; Let its natural intensification 10min--15min, be heated to 70 ℃-85 ℃, isothermal reaction 2h-3h; Back sampling titrimetry isocyano-NCO content reaches preset value 3%-7% and gets final product stopped reaction, subsequently vacuumize degassing bubble 20min-40min; Be cooled to 55 ℃-65 ℃, discharging, the prepolymer preparation is accomplished, i.e. the A component; The prepolymer A component that measures is warming up to 75 ℃-85 ℃ in there-necked flask; Vacuum defoamation 30min-45min is cooled to 55 ℃-65 ℃ then, the good polyether-tribasic alcohol that proportions, 1 of preheating under 55 ℃ of-65 ℃ of conditions; 4-butyleneglycol, dibutyl tin dilaurate are poured in the there-necked flask; Vacuum stirring 3～7min pours the material that mixes in the mould into casting then.
2. engineering tire tread according to claim 1 is used method for preparing polyurethane elastic body, it is characterized in that: production technique is earlier polytetrahydrofuran diol to be added in the there-necked flask, and oil bath is heated to 130 ℃; Start stirring under the vacuum condition, dehydration 3h is cooled to 60 ℃ then; Add the MDI measure, let its natural intensification 15min, slowly be heated to 80 ℃; Isothermal reaction 2.5h, sampling titrimetry-NCO content in back reaches preset value 3%-7% and gets final product stopped reaction; Vacuumize de-bubbled 30min subsequently; Be cooled to 60 ℃, discharging, the prepolymer preparation is accomplished, i.e. the A component; The prepolymer A component that measures is warming up to 80 ℃ in there-necked flask; Vacuum defoamation 40min is cooled to 60 ℃ then, the good polyether-tribasic alcohol that proportions, 1 of preheating under 60 ℃ of conditions; 4-butyleneglycol, dibutyl tin dilaurate are poured in the there-necked flask; Vacuum stirring 3～4min pours the material that mixes in advance in the good mould of 60 ℃ of preheatings the normal pressure casting then.
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| CN2012101241472A CN102643408A (en) | 2012-04-25 | 2012-04-25 | Preparation method of polyurethane elastomer for engineering tire treads |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044654A (en) * | 2012-12-13 | 2013-04-17 | 华南理工大学 | Polyurethane elastomer with long alkyl branch, preparation method thereof and application thereof |
| CN103435774A (en) * | 2013-07-20 | 2013-12-11 | 北京化工大学 | Method for modifying polyester bioelastomer |
| CN103435777A (en) * | 2013-08-19 | 2013-12-11 | 淄博启明星新材料有限公司 | Polyurethane engineering tire for mine use and preparation method thereof |
| CN105085859A (en) * | 2015-08-04 | 2015-11-25 | 万华化学集团股份有限公司 | Soft polyurethane elastomer combination material, preparing method therefore and application thereof |
| CN105440256A (en) * | 2015-12-09 | 2016-03-30 | 东莞市精伦实业有限公司 | Low-hardness and high-resilience polyurethane elastomer and preparation method thereof |
| CN111995729A (en) * | 2020-08-31 | 2020-11-27 | 山东一诺威聚氨酯股份有限公司 | Soft-segment crosslinked thermoplastic polyurethane elastomer and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044654A (en) * | 2012-12-13 | 2013-04-17 | 华南理工大学 | Polyurethane elastomer with long alkyl branch, preparation method thereof and application thereof |
| CN103044654B (en) * | 2012-12-13 | 2015-06-03 | 华南理工大学 | Polyurethane elastomer with long alkyl branch, preparation method thereof and application thereof |
| CN103435774A (en) * | 2013-07-20 | 2013-12-11 | 北京化工大学 | Method for modifying polyester bioelastomer |
| CN103435774B (en) * | 2013-07-20 | 2015-07-22 | 北京化工大学 | Method for modifying polyester bioelastomer |
| CN103435777A (en) * | 2013-08-19 | 2013-12-11 | 淄博启明星新材料有限公司 | Polyurethane engineering tire for mine use and preparation method thereof |
| CN103435777B (en) * | 2013-08-19 | 2015-06-24 | 淄博启明星新材料有限公司 | Polyurethane engineering tire for mine use and preparation method thereof |
| CN105085859A (en) * | 2015-08-04 | 2015-11-25 | 万华化学集团股份有限公司 | Soft polyurethane elastomer combination material, preparing method therefore and application thereof |
| CN105085859B (en) * | 2015-08-04 | 2017-11-28 | 万华化学集团股份有限公司 | A kind of flexibel polyurethane elastomer combined material and its preparation method and application |
| CN105440256A (en) * | 2015-12-09 | 2016-03-30 | 东莞市精伦实业有限公司 | Low-hardness and high-resilience polyurethane elastomer and preparation method thereof |
| CN105440256B (en) * | 2015-12-09 | 2018-05-11 | 东莞市精伦实业有限公司 | A kind of polyurethane elastomer of the high rebound of soft and preparation method thereof |
| CN111995729A (en) * | 2020-08-31 | 2020-11-27 | 山东一诺威聚氨酯股份有限公司 | Soft-segment crosslinked thermoplastic polyurethane elastomer and preparation method thereof |
| CN111995729B (en) * | 2020-08-31 | 2022-04-19 | 山东一诺威聚氨酯股份有限公司 | Soft-segment crosslinked thermoplastic polyurethane elastomer and preparation method thereof |
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Application publication date: 20120822 |