当前位置:首页 >> 能源/化工 >>

Polyurethane


Polyurethane
L. S. RAMANATHAN, S. SIVARAM, AND MUNMAYA K. MISHRA
ACRONYMS CLASS

PU, PUR O O

Polyurethanes ? ?O?? RH? ?? ??O?C?NH?R?NH?C?O? ?? x n R ? isocyanat

e unit RH ? polyol segment ?

STRUCTURE

MAJOR APPLICATIONS

Polyurethane ?exible foams ?nd applications in protective packaging, gaskets, textile laminates, protective cushioning in automobiles, and two component injection-grouting resins. Rigid polyurethane foams are used as thermal insulating materials in refrigerators, freezers, and water heaters. It is also used as a roof proo?ng material. Excellent dampening property, good mechanical and physical properties even at low temperatures, high combustion resistance, and low thermal conductivity.

PROPERTIES OF SPECIAL INTEREST

PROPERTY

UNITS

CONDITIONS

VALUE

REFERENCE

Density Flory-Huggins polymer solvent interaction parameter

g cm?3 ?

4,4H -Diphenylmethane diisocyanate (MDI)/1,4-butane diol (BD) TDI/1,4-BD (DMF)

1.297 0.122

(1) (2)

Unit cell dimensions
Sample Lattice ? Cell dimensions (A) a b c Cell angles (degrees)    Reference

Hexamethylene diisocyanate (HMDI)/ Ethylene glycol (EG) HMDI/1,3-propane diol (PD) HMDI/BD HMDI/1,5-pentane diol (PtD) HMDI/1,6-hexane diol (HD) Trimethylene diisocyanate (TMDI)/BD TMDI/HD MDI/BD MDI/BD

Triclinic Monoclinic Triclinic Monoclinic Triclinic Triclinic Triclinic Triclinic Triclinic

4.59 4.70 4.98 4.70 5.05 5.06 5.04 5.2 4.92

5.14 8.36 4.71 8.36 4.54 5.04 5.04 4.8 5.66

13.9 33.9 19.4 39.0 21.9 30.1 34.6 35 38.4

90 ? 116 ? 112 112 111 115 124

90 ? 105 ? 108 113 111 121 104

119 115 109 115 108 110 111 85 86

(3) (3) (3) (3) (3) (4) (4) (5, 6) (7)

870

Polymer Data Handbook. Copyright # 1999 by Oxford University Press, Inc. All rights reserved.

Polyurethane Conformational characteristics
Sample Solvent Mark-Houwinck parameters K ? 10
?4

?hR2 iaM?1a2 ? 109

Reference

(ml g )

?1

a

Toluene diisocyanate (TDI)/BD MDI/EG

? 100 DMF 95/5 DMF/acetone 90/10 DMF/acetone 85/15 DMF/acetone 79/21 DMF/acetone 71/29 DMF/acetone DMA (at 258C)

5.4 3.64 6.29 7.19 10.02 14.19 30 870

0.74 0.71 0.65 0.63 0.59 0.56 0.50 1.43

? 10.11 10.19 10.25 10.04 9.97 ? ?

(2) (8) (8) (8) (8) (8) (8) (9)

MDI/BD

Refractive index gradient
Sample Condition Solvent ! (nm) Temp (8C) dnadc (ml g?1 ) Second virial coef?cient A2 ? 104 Reference

TDI/BD MDI/1,6-HD
?

DMF DMF/acetone DMF/toluene

546 ? ?

? ? ?

0.14 0.159±0.203? 0.123±0.154?

? 3.0±4.5? 2.3±8.0?

(2) (10) (10)

Variable with respect to DMF volume fraction.

PROPERTY

UNITS

CONDITIONS

VALUE

REFERENCE

Heat of fusion Heat capacity

kJ mol?1 cal g?1 8C?1

MDI/BD HMDI/BD ?50 to 108C 45±1208C 195±2108C HMDI/DEG ?50 to ?58C 50±1008C 140±1608C HMDI/BD HMDI/diethylene glycol (DEG) HMDI/BD HMDI/DEG HMDI/BD HMDI/DEG HMDI/octa?uoro1,6-hexane diol (OFHD) MDI/EG Desmodur/1,6-HD Desmodur/cyclohexane dimethanol (CHDM)

5.3 0.422 0.495 0.665 0.422 0.512 0.623 6 10.5 40 45 295 272 271 363 322 302

(9) (11)

Crystallization half time Crystallization enthalpy Glass transition temperature

min cal cm?3 K

(12) (12) (12) (12) (13) (14) (15) (15)
871

Polymer Data Handbook. Copyright # 1999 by Oxford University Press, Inc. All rights reserved.

Polyurethane
PROPERTY UNITS CONDITIONS VALUE REFERENCE

Melting temperature

K

HMDI/BD HMDI/DEG HMDI/OFHD TDI/EG MDI/EG

476 396 399 453 498

(12) (12) (13) (14) (14)

Optical properties
System Temp. (8C) Solvent Optical rotation ?I?D Reference

MDI/(1S,2S)-diphenyl propane diol HMDI/(1S,2S)-diphenyl propane diol HMDI/(2R,4R)-pentanediol MDI/(1S,2S)-(?)-2-acetamido-1-phenyl-1,3-propanediol TDI/(1S,2S)-(?)-2-acetamido-1-phenyl-1,3-propanediol

25 25 25 25 25

DMSO DMSO DMSO DMF DMF

?71.6 ?14.7 ?80.6 ?24.6 ?20.6

(16) (16) (16) (17) (17)

PROPERTY

UNITS

CONDITIONS

VALUE

REFERENCE

Photoconductivity Refractive index

ohms?1 cm?1 ?

Polyurethane with pendant chromophore Polyurethane with pendant chromophore At 532 nm At 690 nm At 1,064 nm MDI/EG MDI/BD MDI/EG MDI/EG Desmodur/1,6-HD Desmodur/CHDM

1X3 ? 10?13

(18) (18)

1.879 1.812 1.763 2.5 27 21 36 220 220 (14) (1) (19) (14) (15)

Water vapor absorption Solubility parameter Elongation Adhesion strength

% (MPa)1a2 % psi

REFERENCES

1. 2. 3. 4. 5. 6. 7. 8. 872

Camberlin, Y., and J. P. Pascaut. J. Polym. Sci., Polym. Phys. Ed. 22 (1984): 1,835. Malichenko, B. F., et al. Polym. Sci. USSR 9 (1967): 2,975. Sato, Y., S. Nansai, and S. Kinoshita. Polym. J. 3 (1972): 113. Sato, Y., K. Hara, and S. Kinoshita. Polym. J. 14 (1982): 19. Blackwell, J., and K. H. Gardner. Polymer 20 (1979): 13. Blackwell, J., and M. Ross. J. Polym. Sci., Polym. Lett. Ed., 17 (1979): 447. Born, L., et al. J. Polym. Sci., Polym. Phys. Ed., 22 (1984): 163. Beachell, H. C., and J. C. Peterson. J. Polym. Sci., Part A-1, 7 (1969): 2,021. Polymer Data Handbook. Copyright # 1999 by Oxford University Press, Inc. All rights reserved.

Polyurethane
9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. Hwang, K. K. S., et al. J. Polym. Sci., Polym. Chem. Ed., 22 (1984): 1,677. Tuzar, Z., and H. C. Beachell. J. Polym. Sci., Polym. Lett. Ed., 9 (1971): 37. Godovskii, Y. K., and Y. S. Lipatov. Polym. Sci. USSR 10 (1968): 34. Godovskii, Y. K., and G. C. Slomimsky. J. Polym. Sci., Polym. Phys. Ed., 12 (1974): 1,053. Malichenko, B. F., Y. V. Sheludks, and Y. Y. Kercha. Polym. Sci. USSR 9 (1967): 2,808. Lyman, D. J. J. Polym. Sci. 45 (1960): 49. Chung, F. H. J. Appl. Polym. Sci. 42 (1991): 1,319. Kobayashi, T., M. Kakimoto, and Y. Imai. Polym. J. 25 (1993): 969. Chen, Y., and J. Tsay. Polym. J. 24 (1992): 263. Chen, M., et al. Appl. Phys. Lett. 64 (1994): 1,195. Nishimura, H., et al. Polym. Eng. and Sci. 26 (1986): 585.

Polymer Data Handbook. Copyright # 1999 by Oxford University Press, Inc. All rights reserved.

873


相关文章:
高分子简称和全名
(Ethylene Tetrafluoroethylene) Engineering Thermoplastic Polyurethane Ethylene Vinyl Acetate Copolymer Ethylene-Vinyl Acetate Copolymer Poly(Ethylene-Vinyl Alcohol) ...
七大纶
氨纶 丙纶 涤纶 锦纶 腈纶 氯纶 维纶 简称 PU PP PET PA PVC 全英 Polyurethane Polypropylene Terylene Polyamide Polyacrylonitrile Polyvinyl chloride Polyvinyl ...
PU和PA有什么区别
聚氨酯涂层胶(Polyurethane 简称 PU) 聚氨酯全称为聚氨基甲酸酯,是分子结构中含有—NHCOO—单元的高分子化合物,该单元由异氰酸基和 羟基反应而成,反应式如下: —...
高分子缩写
(GPPS) 聚苯乙烯 PSU Polysulphone 聚砜树脂 PTFE Polytetyafluoroethylene 聚四氟乙烯 PU Hard polyurethane elastomer 硬聚氨脂弹性体 PUR Polyurethane 聚氨脂 PVAC...
氨纶介绍及用途分类
第一章 氨纶产品介绍 1.1 氨纶基本概述 氨纶是聚氨基甲酸酯纤维在我国的商品名,英文学名为 Polyurethane fiber(简写为 PU fiber),国际上称为斯潘德克斯(Spandex...
KraussMaffei RIM相关技术
technology KraussMaffei's LFI (Long Fiber Injection) system has set new standards for the production of polyurethane composites. A LFI process head chops ...
服装面料成分缩写
POLYURETHANE/SPANDEX 氨纶 名称 常用缩写 中文学名 英文学名 涤纶 锦纶 晴纶 丙纶 维纶 氨纶 氯纶 T、PET 聚酯纤维 polyester 不耐碱,在合成纤维中耐热性最高。...
SMT常用术语
plastic leadless chip carrier 塑胶式有引脚晶片承载器 Polyurethane 聚亚胺酯(刮刀材质) ppm:parts per million 指每百万 PAD(点)有多少个不良 PAD(点) psi :...
线规对照表_图文
Polyurethane Polyvinyl Chloride Resistance Retaractile Cord Rubber Semi-rigid PVC Separator Shield Shield Coverage Silicone Teflon TFE Tinsel Thermal Rating VW-...
塑料缩写及全名对照表
Polyurethane PUR Polyvinyl Chloride PVC Polyvinylidene Fluoride PVDF Polyvinyl Fluoride PVF Polyester PER Sheet Molding Compound SMC Silicone Rubber SI Silicone ...
更多相关标签:
polyester | polyurethane foam | polyurethane面料 | pu | 聚氨酯 | polyu | polyurethane resin | 聚亚安酯 |