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2、4 Plastics Determination of temperature of deflection under load Part 1: General test method (. . 1. ), ISO 75-3:2004 Plastics Determination of temperature of deflection under load Part 3: High-strength thermosetting laminates and long-fibre-reinforced plastics (. . 3. ) : - 10 ; - ; - , ; - . (en).
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4、on under load 20150901 1 . ( ), , 7,5 . 2 : 327942014 . 25.60482 . (). , 955081. , 1201566 . . 1201966 . . 124232013 (ISO 291:2008) . () 2627784 . , 1 , , . (), , () . , , , , . 3 32794, : 3.1 (flexural strain)f, %: . . 3.2 (flexural strain increase) f, %: . , , , , , , , , (. 3.4). 326572014 2 3.3
5、(deflection) s, : , . 3.4 (standard deflection) s, : , . (). 3.5 (flexural stress) f, : . 3.6 (load) F, : , . 3.7 (temperature of deflection under load) f, : , . 3.8 L, : . 4 () . , , . 5 5.1 ( ) 1. , , , . , . , . . . . , ; 0,01 , , . . (3,0 0,2) , . L, , : L = 30h 1, (1) h , . 326572014 3 100 (. 6.4) 3 . 1 ; 2 ; 3 ; 4 ; b 1 ( ) , , . , . 5.2 , , . 50 . . , , . . (120 10) /. 326572014 4 6 . , 6 (12 1) . 1 . . 5.3 , 7.1, , . 7.1. , 1 . 5.4 0,5 . (2,0 0,5) . , . 5.5 0,01 . , . Fs, , , , Fs . Fs, (. 7.1). Fs , , . 6 6.1 6.1.1 , . , , . , . 6.1.2 , , . 6.1.3 , 6.1.1,
