KS M ISO 8256-2012 Plastics-Determination of tensile-impact strength《塑料 拉伸冲击强度测定》.pdf

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1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS M ISO 8256 KS M ISO 8256:2012 2012 12 24 http:/www.kats.go.krKS M ISO 8256:2012 : ( ) ( ) SREAP ( ) : (http:/www.standard.go.kr) : :2002 8 29 :2012 12 24 2012-0751 : : ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS M ISO 8256:2012 i ii 1 1 2 1 3 .2 4

2、2 5 2 6 3 6.1 3 6.2 .4 6.3 5 6.4 5 6.5 .5 6.6 5 7 6 8 7 8.1 A Eq.7 3.3 B - (bounce) Eb8 9 .8 9.1 - 8 9.2 9 9.3 .9 9.4 .9 10 9 11 .9 A( ) A .11 A.1 .11 A.2 Ecr,kin .11 A.3 Ecr,pl 12 A.4 13 B( ) B - 14 16 KS M ISO 8256:2012 ii 2004 2 ISO 8256, Plastics Determination of tensile-impact strength . KS M I

3、SO 8256:2012 Plastics Determination of tensile-impact strength 1 1.1 2 . . (KS M ISO 472 ) , , KS M ISO 179 1 KS M ISO 180 . 1.2 . 1.3 ( , , , ) . 1.4 . . , . A B . 1.5 . , . 2 . 2 . . ( ) . KS A ISO 2602, KS M ISO 179 1, 1: KS M ISO 179 2, 2: KS M ISO 180, KS M ISO 291, KS M ISO 295, KS M ISO 472,

4、KS M ISO 8256:2012 2 KS M ISO 1268( ), KS M ISO 3167, KS M ISO 10350 1, 1: KS M ISO 11403 3, 3: KS M ISO 13802, , ISO 293, Plastics Compression moulding of test specimens of thermoplastic materials ISO 294 1, Plastics Injection moulding of test specimens of thermoplastic materials ISO 294 2, Plastic

5、s Injection moulding of test specimens of thermoplastic materials ISO 294 3, Plastics Injection moulding of test specimens of thermoplastic materials ISO 2818, Plastics Preparation of test specimens by machining 3 . 3.1 (tensile-impact strength of unnotched specimens) atU kJ/m2 . 3.2 (tensile-impact

6、 strength of notched specimens) atN kJ/m2 . 4 1 . . , (crosshead) . 2 2 . ( A) ( B) . . (toss)( A) (bounce)( B) . 5 5.1 KS M ISO 8256:2012 3 , KS M ISO 13802 . 5.2 (striker) 5.2.1 , , . , . 5.2.2 A B KS M ISO 13802 . 5.3 5.3.1 KS M ISO 13802 , (bouncing) , (inelastic impact) (: ) . A B , 1 . 5.3.2 (

7、clamping) (jig) . 1 g J A B 2.0 151 301 151 4.0 151 301 151 7.5 301 601 301 15.0 301 601 1201 25.0 601 1201 1201 50.0 601 1201 1201 A , . 5.4 / KS M ISO 13802 . 5.5 0.01 mm . , (0.01 0.05) MPa . , 7.4 . 6 6.1 KS M ISO 8256:2012 4 2 1 5 . , . A: KS M ISO 10350 1 KS M ISO 11403 3 , 1( KS M ISO 3167 IS

8、O 294 1 .) 4( ISO 294 2 ISO 294 3 .) . B: 2 4 . . , . 4 mm . 1 (40.2) mm 4 (30.2) mm . , 5 % . 4 mm , , KS M ISO 179 KS M ISO 180 . 2 : mm l b x l0 le r 1 802 100.2 60.2 302 2 602 100.2 30.2 100.2 252 101 3 802 150.2 100.2 100.2 302 201 4 602 100.2 30.2 252 151 5 a802 150.2 50.2 100.2 502 201 a 5 :

9、b (232) mm, r (40.5) mm, l (111) mm 6.2 6.2.1 . , ( ) ISO 293, ISO 294 1, ISO 294 2 KS M ISO 295 , , ISO 2818 . 1 KS M ISO 3167 A . 6.2.2 ISO 2818 . 6.2.3 KS M ISO 1268 ISO 2818 . KS M ISO 8256:2012 5 6.3 6.3.1 ( 1 ) 6.2 ISO 2818 . 6.3.2 (1.00.05) mm , (451)( 1 ) . (cutting tooth) 1 2 . 2 0.2 mm . x

10、 ( 2 ) . , . , . . 6.3.3 , . , . , / (localized anisotropy) . . 6.3.4 (puncher) , 2 . 6.4 10 . (KS A ISO 2602 ) 5 % , 5 . 6.5 . , 2 . 6.6 , , KS M ISO 291 . , . KS M ISO 8256:2012 6 1 2 3 4 5 1 7 7.1 ( , ), KS M ISO 8256:2012 7 . 7.2 , 20 % 80 % . , . 7.3 KS M ISO 13802 . 7.4 h x 0.02 mm . , (2 3) m

11、m , x . , . . , . 7.5 . . A , (vice jaw) . B , / ( KS M ISO 13802 ). 7.6 . Es KS M ISO 13802 . 7.7 2.0 J 20 % , . , (multi-layered) . , , . 7.8 , . , . 7.9 , 2 , . , , . 8 8.1 A Eq Eq ( A ). +=maxmaxq23)1(2)3(EEE (1) KS M ISO 8256:2012 8 Eq: (J) Emax: (J) : ( , mcr/mp) . )cos1(pmaxp=LgEm (2) g : (m

12、s 2) Lp: KS M ISO 13802 , (m) : 8.2 B - (bounce) Eb- Eb - . ( B ). 9 9.1 - 9.1.1 - , ES A (toss energy) Eq B - Eb . 9.1.2 A Ec(J) . qscEEE = (3) Es: (J) , (7.6 ) Eq: (J) , 8.1 . 9.1.3 B Ec(J) . bscEEE += (4) es: (J)(7.6 ) Eb: - (J) , 8.2 B , KS M ISO 8256:2012 9 Es . 9.2 - atU ( ) - atN(kJ/m2) . 3ct

13、NtU10)( =hxEaa (5) Ec: 9.1 (J) x : (mm)( 1 2, 3, 4, 5) ( 1 1) h : (mm) , (multilayer) (7.7 ), 9.3 , KS A ISO 2602 , , . 9.4 2 . 10 . . 11 . a) b) (A B) ( 2 ) KS M ISO 8256/1 A c) , , , , , , d) , , , , , , e) , , f) g) , KS M ISO 8256:2012 10 h) i) j) - atN atU(kJ/m2) , , / . k) , l) , m) (fracture)

14、 n) KS M ISO 8256:2012 11 A ( ) A A.1 Eq . 20pmax21= mE (A.1) 2ppp21= mE (A.2) pmaxsEEE = (A.3) 2crcrcr,kin21= mE (A.4) (5.3.1 , .), vcr vp . 2pcrcr,kin21= mE (A.5) Emax: (J) Ep: (J) Es: (J) Ecr,kin : (J) mp: (kg) (8.1 ) v0: (velocity) (m s 1) vp: (m s 1) mcr: (kg) vcr: (m s 1) , Ec: (J)( .) Ecr,pl: (J) A.2 Ecr,kin . cr,kincr,plCSEEEE += (A.6) , (A.2) (A.4) . KS M ISO 8256:2012 12 =pcr,kinEE (A.7) (A.3) . )(smaxcr,kinEEE = (A.8) pcrmm= (A.9) A.3 Ecr,pl Ecr,pl , ( , Ec 0). (*) . ( ) . +=pcrp0p)( mmm (A.10)

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