范德瓦尔斯力(van der Waals force)
范德瓦尔斯力(van der Waals force)
范德瓦尔斯力(van der Waals force)
B.吸附层可以是单分子层或多分子层
C.吸附速度较快,吸附热较小
D.吸附较稳定,不易解吸
Recycling a thermoplastic polymer is possible, because ______ .
A.different polymer chains in a thermoplastic are held together by relatively weak Van der Waals bonds which can be broken at relatively low temperatures
B.thermoplastics are only lightly crosslinked in comparison to thermosets
C.both of the above
D.neither of the above
A) Allotropic material N) Interstitialcy
B) Amorphous O) Long-range-order materials
C) Anion P) Monomer
D) Atomic packing factor (APF) Q) Neutrons
E) Cation R) Polymer
F) Coordinationnumber S) Polymorphic material
G) Creep T) Proton
H) Crystalline U) Short-range-ordermaterials
I) Electron affinity V) Smart materials
J) Electronegativity W) Substitutionalsolid solution
K) Engineering materials X) Vacancy
L) Factor ofsafety Y) Van de waals forces
M) Interstitialsolid solution Z) Yield