CN101348557A - Wearing resistance enhanced pouring type urethane elastomer composition - Google Patents
Wearing resistance enhanced pouring type urethane elastomer composition Download PDFInfo
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- CN101348557A CN101348557A CNA2008101391401A CN200810139140A CN101348557A CN 101348557 A CN101348557 A CN 101348557A CN A2008101391401 A CNA2008101391401 A CN A2008101391401A CN 200810139140 A CN200810139140 A CN 200810139140A CN 101348557 A CN101348557 A CN 101348557A
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- tdi
- mdi
- tolylene diisocyanate
- prepolymer
- polyester polyol
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Abstract
A cast type polyurethane elastomer compound with improved abrasion resistance consists of two constituents of a prepolymer and an aroma diamine curing agent. MDI/TDI-80 cross blending diisocyanate reacts with polyester polyol at a temperature of between 70 to 90 DEG C to obtain a prepolymer containing 3 to 5 percent of isocyanic acid radical. The invention adopts the MDI/TDI-80 cross blending diisocyanate to replace TDI-80, thereby improving the abrasion resistance of a TDI-80 type polyurethane elastomer.
Description
Technical field
The present invention relates to a kind of pouring type urethane elastomer composition.
Background technology
Polyurethane elastomer is by soft section and hard section a kind of segmented copolymer that constitutes, and is characterized in that goods hardness setting range is wide, and the elasticity of existing rubber has the hardness of plastics again, has the favorable mechanical performance.Be deep in national economy and the people's lives in recent years, become a kind of new synthetic materials.The prepolymer that is used to produce polyurethane elastomer all is that TDI or MDI and polyol reaction make usually, the former adopts MOCA as chainextender usually, the latter adopt dibasic alcohol as: 1,4-butyleneglycols etc. are as chainextender, but dibasic alcohol is as chainextender, because its water-absorbent causes goods easily to foam by force, manufacturability is poorer than adopting MOCA.
TDI type polyurethane performed polymer comprises two kinds on TDI-100 type and TDI-80 type, since TDI-100 contain 2, the 4-tolylene diisocyanate is more than 98.5%, TDI-80 then contain 80% 2, the 4-tolylene diisocyanate and 20% 2, the 6-tolylene diisocyanate, because 2,6-tolylene diisocyanate symmetry is good, the crystallization that has determined TDI-80 synthetic polyurethane elastomer to compare with the TDI-100 synthetic is strong, toughness is relatively poor, so elastomeric mechanical property of TDI-100 type polyurethane and wear resisting property performance getting well much than TDI-80 type.Because vapour pressure height (20 ℃ of 1.33Pa), volatility height, the toxicity of TDI are big, in the production and the course of processing, can cause bigger harm simultaneously to human body.The steam of MDI forces down (20 ℃ 1.33 * 10
-3Therefore Pa), volatility is little, selects for use the little MDI of human body harm, reduces application to the virulent TDI of human body and also be thing highly significant.
Summary of the invention
Technical problem to be solved by this invention provides a kind of goods wear resistance enhanced pouring type urethane elastomer composition that makes.
Wear resistance enhanced pouring type urethane elastomer composition of the present invention is characterized in that being made up of two kinds of components:
A component: a kind of prepolymer, obtain according to the method for being prepared as follows: by weight percentage, reacted 2～3 hours at 70 ℃～90 ℃ by vulcabond 15%～25% and polyester polyol 75%～85%, obtain the isocyano mass content and be 3～5% prepolymer, it is 2 and the poly-adipate polyester polyvalent alcohol of number-average molecular weight in 1000～2000 scopes that described polyester polyol adopts functionality, described vulcabond is made up of diphenylmethanediisocyanate and tolylene diisocyanate blend, and wherein tolylene diisocyanate accounts for 65%～75% of blend vulcabond gross weight;
The B component: a kind of aromatic diamine solidifying agent, be selected from 3,3 '-two chloro-4,4 '-diaminodiphenyl-methane or 3,5-diformazan sulfenyl tolylene diamine.
Optimized technical scheme is:
The number-average molecular weight of described polyester polyol is 1500.
Described diphenylmethanediisocyanate is meant MDI-100, MDI-50 or liquefied mdi, MDI-50 more preferably, and tolylene diisocyanate is meant TDI-80 or TDI-100, more preferably TDI-80.
A component and B component are packed separately, when being used for production of articles, with diamine curing agent (B component) and prepolymer (A component) with 0.85～1.0 NH
2The equivalence ratio of/NCO is carried out hybrid reaction, and mixing temperature is 75 ℃～90 ℃.Then according to common mode pour into a mould, sulfidization molding, the goods curing temperature is 100 ℃～115 ℃, vulcanizes the demoulding in 30～60 minutes, 100 ℃～115 ℃ postcure 8～10 hours, obtains the polyurethane elastomer goods.
Appellation A, B component are just for the convenience on explaining.
The present invention adopts MDI/TDI-80 blend vulcabond and polyester polyol to be used for the synthetic of prepolymer, arylamine class chainextender is used for the making of polyurethane elastomer, the prepolymer processing performance is good, it should be noted that especially the mechanical property of goods and wear resisting property have obtained large increase.And under the situation that TDI holds at high price, this application then has very big economic implications.Select for use the little MDI of human body harm, reduced application the virulent TDI of human body.Described polyurethane elastomer is mainly used in the making of elastomeric articles such as urethane rubber tire, polyurethane plate, rubber roll.
Embodiment
Following examples material therefor is as follows: be not specifically noted, each percentage ratio refers to mass percent.
CMA1024 (commercially available prod model, down together): number-average molecular weight 1000, hexanodioic acid, ethylene glycol, propylene glycol synthetic polyester diol
ODX150: number-average molecular weight 1500, hexanodioic acid, ethylene glycol, propylene glycol synthetic polyester diol
ODX218: number-average molecular weight 2000, hexanodioic acid, ethylene glycol, propylene glycol synthetic polyester diol
TDI-80:2,4-tolylene diisocyanate 80%, 2,6-tolylene diisocyanate 20%
MDI-50:4,4-diphenylmethanediisocyanate 50%, 2,4-diphenylmethanediisocyanate 50%
MOCA:3,3 '-two chloro-4,4 '-diaminodiphenyl-methane
E-300:3,5-diformazan sulfenyl tolylene diamine
MDI-100:4, the 4-diphenylmethanediisocyanate
Liquefied mdi: the MDI-100 of carbodiimide modification
Embodiment 1:
Prepolymer: the polyester polyol of molecular weight 1000 (CMA1024) 75%, diphenylmethanediisocyanate (MDI-100) 8.5%, tolylene diisocyanate (TDI-80) 16.5% (0.095MPa) removes bubble, obtains isocyano-content and be 5% prepolymer in 2～3 hours vacuum of 70 ℃ of reactions.。
Solidifying agent be selected from 3,3 '-two chloro-4,4 '-diaminodiphenyl-methane (MOCA)
Prepolymer and MOCA are with 0.9 NH
2The equivalence ratio of/NCO is carried out hybrid reaction, and mixing temperature is 80 ℃, and the goods curing temperature is 100 ℃, vulcanizes the demoulding in 40 minutes, 110 ℃ of postcure 10 hours, obtains the polyurethane elastomer goods.
Embodiment 2:
Prepolymer: the polyester polyol of molecular weight 1500 (ODX150) 80%, diphenylmethanediisocyanate (MDI-50) 7%, tolylene diisocyanate (TDI-80) 13% (0.095MPa) removes bubble, obtains isocyano-content and be 4.1% prepolymer in 2～3 hours vacuum of 70 ℃～90 ℃ reactions.
Solidifying agent be selected from 3,3 '-two chloro-4,4 '-diaminodiphenyl-methane (MOCA)
Prepolymer and MOCA are with 0.9 NH
2The equivalence ratio of/NCO is carried out hybrid reaction, and mixing temperature is 90 ℃, and the goods curing temperature is 115 ℃, vulcanizes the demoulding in 60 minutes, 100 ℃ of postcure 8 hours, obtains the polyurethane elastomer goods.
Embodiment 3:
Prepolymer: the polyester polyol of molecular weight 2000 (ODX218) 85%, diphenylmethanediisocyanate (liquefied mdi) 3.2%, tolylene diisocyanate (TDI-80) 11.3% (0.095MPa) removes bubble, obtains isocyano-content and be 3% prepolymer in 2～3 hours vacuum of 80 ℃ of reactions.
Solidifying agent be selected from 3,3 '-two chloro-4,4 '-diaminodiphenyl-methane (MOCA)
Prepolymer and MOCA are with 0.9 NH
2The equivalence ratio of/NCO is carried out hybrid reaction, and mixing temperature is 80 ℃, and the goods curing temperature is 100 ℃, vulcanizes the demoulding in 30 minutes, 110 ℃ of postcure 9 hours, obtains the polyurethane elastomer goods.
Comparison example: the polyester polyol of molecular weight 1500 (ODX150) 82%, tolylene diisocyanate (TDI-80) 18% obtain the performed polymer of isocyano-content 4%.
Solidifying agent be selected from 3,3 '-two chloro-4,4 '-diaminodiphenyl-methane (MOCA), prepolymer and MOCA are with 0.9 NH
2The equivalence ratio of/NCO is reacted, and mixing temperature is 75 ℃～90 ℃, and the goods curing temperature is 100 ℃～115 ℃, vulcanizes the demoulding in 20～60 minutes, 100 ℃～115 ℃ postcure 8～10 hours, obtains the polyurethane elastomer goods.
Polyurethane elastomer product properties such as following table:
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparison example |
| Hardness (Shao A) | 95 | 90 | 80 | 90 |
| Tensile strength (Mpa) | 60 | 54 | 48 | 48 |
| Elongation % | 500 | 680 | 750 | 620 |
| Tear strength (KN/m) | 100 | 90 | 80 | 90 |
| Resilience % | 30 | 45 | 30 | 25 |
| Wear resisting property/gram | 2.4 | 1.8 | 1.5 | 2.9 |
The wear resisting property test is adopted in the table, 80 order emery wheels, and 2500 rev/mins of test rotating speeds, heavy burden 20KG, drift angle 15 degree, the variation of weighing product weight is changeed in test 15000.
Claims (4)
1, a kind of wear resistance enhanced pouring type urethane elastomer composition is characterized in that being made up of two kinds of components:
A component: a kind of prepolymer, obtain according to the method for being prepared as follows: by weight percentage, reacted 2～3 hours at 70 ℃～90 ℃ by vulcabond 15%～25% and polyester polyol 75%～85%, obtain the isocyano mass content and be 3～5% prepolymer, it is 2 and the poly-adipate polyester polyvalent alcohol of number-average molecular weight in 1000～2000 scopes that described polyester polyol adopts functionality, described vulcabond is made up of diphenylmethanediisocyanate and tolylene diisocyanate blend, and wherein tolylene diisocyanate accounts for 65%～75% of blend vulcabond gross weight;
The B component: a kind of aromatic diamine solidifying agent, be selected from 3,3 '-two chloro-4,4 '-diaminodiphenyl-methane or 3,5-diformazan sulfenyl tolylene diamine.
2, elastic composition according to claim 1, the number-average molecular weight that it is characterized in that described polyester polyol is 1500.
3, elastic composition according to claim 1 is characterized in that described diphenylmethanediisocyanate is meant MDI-100, MDI-50 or liquefied mdi, and tolylene diisocyanate is meant TDI-80 or TDI-100.
4, elastic composition according to claim 1 is characterized in that described diphenylmethanediisocyanate refers to MDI-50, and tolylene diisocyanate is meant TDI-80.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101391401A CN101348557A (en) | 2008-08-08 | 2008-08-08 | Wearing resistance enhanced pouring type urethane elastomer composition |
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|---|---|---|---|
| CNA2008101391401A CN101348557A (en) | 2008-08-08 | 2008-08-08 | Wearing resistance enhanced pouring type urethane elastomer composition |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181033A (en) * | 2011-03-28 | 2011-09-14 | 来安县安泰聚氨酯制品有限公司 | Technology formula of polyurethane stripping wheel |
| CN101570676B (en) * | 2009-06-04 | 2012-01-04 | 长兴三伟热熔胶有限公司 | Polyurethane hot melt adhesive for high-grade lining cloth and preparation method thereof |
| CN102516495A (en) * | 2011-10-27 | 2012-06-27 | 山东东大一诺威聚氨酯有限公司 | Method for preparing corrosion-resisting polyurethane elastomer |
| CN104693401A (en) * | 2015-01-20 | 2015-06-10 | 淄博赛通聚氨酯有限公司 | Formula and production technology of polyurethane low-speed solid tire |
| CN106854270A (en) * | 2016-12-30 | 2017-06-16 | 山东诺威聚氨酯股份有限公司 | Many durometric polyurethane elastomers and preparation method thereof |
| CN107075075A (en) * | 2014-06-23 | 2017-08-18 | 科思创德国股份有限公司 | The purposes of thermoplastic polyurethane powder |
| CN109206586A (en) * | 2018-10-22 | 2019-01-15 | 苏州市宝苏矿冶设备有限公司 | A kind of preparation method of polyurethane flame-proof cutting roller |
| CN112175564A (en) * | 2020-10-29 | 2021-01-05 | 江苏东邦科技有限公司 | High-wear-resistance environment-friendly adhesive for bonding seat leather |
| CN112625570A (en) * | 2020-12-08 | 2021-04-09 | 默利卡高分子材料（上海）有限公司 | Coating polyurethane mortar |
| CN113717341A (en) * | 2021-10-20 | 2021-11-30 | 中国科学院兰州化学物理研究所 | Hydrolysis-resistant polyurethane elastomer with high strength, high toughness and high wear resistance and preparation method thereof |
-
2008
- 2008-08-08 CN CNA2008101391401A patent/CN101348557A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570676B (en) * | 2009-06-04 | 2012-01-04 | 长兴三伟热熔胶有限公司 | Polyurethane hot melt adhesive for high-grade lining cloth and preparation method thereof |
| CN102181033A (en) * | 2011-03-28 | 2011-09-14 | 来安县安泰聚氨酯制品有限公司 | Technology formula of polyurethane stripping wheel |
| CN102516495A (en) * | 2011-10-27 | 2012-06-27 | 山东东大一诺威聚氨酯有限公司 | Method for preparing corrosion-resisting polyurethane elastomer |
| CN107075075A (en) * | 2014-06-23 | 2017-08-18 | 科思创德国股份有限公司 | The purposes of thermoplastic polyurethane powder |
| CN104693401A (en) * | 2015-01-20 | 2015-06-10 | 淄博赛通聚氨酯有限公司 | Formula and production technology of polyurethane low-speed solid tire |
| CN104693401B (en) * | 2015-01-20 | 2018-07-31 | 日照悍马轮胎股份有限公司 | A kind of polyurethane low speed solid tyre and its production technology |
| CN106854270A (en) * | 2016-12-30 | 2017-06-16 | 山东诺威聚氨酯股份有限公司 | Many durometric polyurethane elastomers and preparation method thereof |
| CN109206586A (en) * | 2018-10-22 | 2019-01-15 | 苏州市宝苏矿冶设备有限公司 | A kind of preparation method of polyurethane flame-proof cutting roller |
| CN112175564A (en) * | 2020-10-29 | 2021-01-05 | 江苏东邦科技有限公司 | High-wear-resistance environment-friendly adhesive for bonding seat leather |
| CN112625570A (en) * | 2020-12-08 | 2021-04-09 | 默利卡高分子材料（上海）有限公司 | Coating polyurethane mortar |
| CN113717341A (en) * | 2021-10-20 | 2021-11-30 | 中国科学院兰州化学物理研究所 | Hydrolysis-resistant polyurethane elastomer with high strength, high toughness and high wear resistance and preparation method thereof |
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Open date: 20090121 |