| 释义 |
thermoplastic, a. and n.|θɜːməʊˈplæstɪk|
[f. thermo- + plastic a.]
A. adj. Becoming soft when heated and rigid when allowed to cool, and capable of being repeatedly reheated and reshaped without loss of properties; made of such a substance.
1883Fisheries Exhib. Catal. 63 Thermoplastic Splints, likewise Splints for Fractures and Broken Bones. 1909Chem. Abstr. III. 2063 Thermo-plastic composition containing keratin. Keratin is mixed with β-naphthol and the compn. subjected to heat and pressure, to form a subst. for rubber, celluloid, etc. 1937Jrnl. R. Aeronaut. Soc. XLI. 525 Some kinds of synthetic resins and to a limited extent one natural resin (shellac) have the valuable characteristic of being ‘thermosetting’, i.e., when once moulded they set to permanently infusible products. Most resins are ‘thermoplastic’, i.e., they become soft whenever the temperature exceeds a certain value. 1951[see benzyl s.v. benzo-]. 1958Listener 4 Dec. 967/1 Thermoplastic tiles and rubber floors. 1976J. Fleming To make an Underworld xi. 128 These small thermo-plastic boats..were safer than houses, kids could play with them.
B. n. A thermoplastic substance.
1929Brit. Plastics & Moulded Products Trader June 25/1 Thermoplastics are divided into pheno-plastics..and amino-plastics. 1945Electronic Engin. XVII. 516 It is frequently used in association with polythene and other thermoplastics. 1967Times Rev. Industry May 75/3 Other thermoplastics, including polyvinyl chloride (PVC), polypropylene and polyvinylidene chloride comprise about 10 per cent..of the total weight of plastics used in packaging. 1976Shooting Mag. Dec. 33/2 (Advt.), Lightweight muff-type ear protector... Earcups are manufactured from thermoplastic with soft sponge-filled ear cushions.
Hence ˌthermoplaˈsticity, the quality of being thermoplastic.
1935C. Ellis Chem. Synthetic Resins II. lvi. 1150 The thermoplasticity of the resins is a disadvantage. 1962J. T. Marsh Self-Smoothing Fabrics x. 141 Some of these mixed products can be used to reduce the solubility and swelling of the linear polymer but the thermoplasticity will be reduced. 1980Nuclear Engin. & Design LVII. 323 (heading) Coupling phenomena in thermoplasticity. |