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1、JIS JAPANESE INDUSTRIAL STA N DA R D Translated and Published by Japanese Standards Association Plasticized polyvinyl chloride compounds ICs 83.08.20 Descriptors : plasticized polyvinyl chloride, electric cables, plastics, insulating Reference number : JIS K 6723 : 1995 (E) coatings, electrical insu
2、lating materials 7s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=Hong Kong Polytechnic Univ/9976803100 Not for Resale, 10/02/2005 23:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 免费标准下载网( w w w . f r e e b z . n e t ) 免费标准下
3、载网( w w w . f r e e b z . n e t ) 无需注册, 即可下载 K 6723 : 1995 Foreword This translation has been made based on the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberations at Japanese Industrial Standards Committee in accordance with the In
4、dustrial Standardization Law: 2 . Date of Establishment: 1955-09-04 Date of Revision: 1995-05-01 Date of Public Notice in Official Gazette: 1995-05-01 Investigated by: Japanese Industrial Standards Committee Divisional Council on High Molecular Materials JIS K 6723 : 1995, First English edition publ
5、ished in 2000-02 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN in the event of any doubts arising as to the contents, the original JIS is to be the final authority. ? O JSA2000 All rights reserved. Unless otherwise specified, no part of
6、 this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=Hong
7、 Kong Polytechnic Univ/9976803100 Not for Resale, 10/02/2005 23:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- The Standard is downloaded from Standard Sharing 免费标准下载网( w w w . f r e e b z . n e t ) 免费标准下载网( w w w . f r e e b z . n e t ) 无需注册, 即可下载 STDmJIS K b723-EN
8、GL 1775 = 4933b08 05630b3 343 JAPANESE INDUSTRIAL STANDARD JIS K 6723 : 1995 Plasticized polyvinyl chloride compounds 1 This Standard specifies the plasticized polyvinyl chloride compounds, (herein- after referred to as the “compounds”), used for the polyvinyl chloride insulated wire, polyvinyl chlo
9、ride cord and cable sheath for 600 V. Scope Remarks 1 The standards cited in this Standard are as follows : JIS B 7503 Dialgauges JIS C 2320 JIS K 6258 Electrical insulating oils Testing methods of the effect of liquids for vulcanized rubber JIS K 7113 JIS K 7212 Testing method for tensile propertie
10、s of plastics General rules for tests for thermal ageing properties of thermoplastics in the form of sheet by means of ovens Testing method for brittleness temperature of plastics JIS K 7216 JIS K 8295 Glycerol JIS R 3503 Glass apparatus for chemical analysis 2 The international standards correspond
11、ing to this Standard are as follows : IS0 182-1 : 1990 Plastics- Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures- Part 1 : Con- go red method Plastics- Stand
12、ard atmospheres for conditioning and testing IS0 R 527 : 1966 Plastics - Determination of tensile properties IS0 974 : 1980 Plastics - Determination of the brittleness temperature by impact Plastics - Plasticized compounds of homopolymers and copolymers of vinyl chloride (PVC-P) - Part 1 : Desig- na
13、tion, Part 2 : Preparation of test specimens and deter- mination of properties in this Standard are based IS0 291 : 1977 IS0 2898 : 1986 3 The units and the numerical values given in on the traditional units, and are appended for reference. 2 Classification The classification of compounds shall be a
14、s shown in Table 1. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=Hong Kong Polytechnic Univ/9976803100 Not for Resale, 10/02/2005 23:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 免费标准下载网( w w w . f r e e b z . n e t ) 免费标准下
15、载网( w w w . f r e e b z . n e t ) 无需注册, 即可下载 Table 1 Classification I Class I Remark I I No. 1 For heat-proof insulation Class 2 No. 2 For heat-poof cord For general insulation Class 1 For general cord No. 3 For general sheath % Elongation Retention of tensile strength % Retention of elongation % Re
16、tention of tensile strength % Not less Not less Not less Not less Not less Not less- than 180 than 180 than 200 than 180 than 180 than 200 Not less Not less Not less than 90 than 90 than 90 Not less Not less Not less than 70 than 70 than 70 - - - - - - 6.4 - - - Notless Notless Notless than 90 than
17、90 than 90 1 No. 3 I Forheat-poofsheath - 1 % eat deformation rate 3 requirements specified in Table 2. Quality The compounds shall be tested in accordance with 6 and shall conform to the 6.5 Not more Not more Not more Not more Not more Not more than40 than40 than40 than25 than25 than25 Table 2 Qual
18、ity eat stability o c + o . c Qcm Volume resistivity 60 “C +OS OC Qcm 75 “C+O.S “C Qcm - . Class 2 Applicabl Class Class 1 NOtleSS IiOtieSS NOtleSS NOtlSS NOtlesS Notless 6.7 than2 than2 than2 than2 than2 than2 ot less than ot less than - Not less thanNot less than - ot less than Not less than 5X1OU
19、 1x10“ 5x1013 lxlolz 6.8 - - - - 1 x IOZ0 loll - - - Not less than Not less than - 2X IO“ 5X10 Test Item Oil resistance Tensile test Not less Retention of tensile Not less - Not less Notless strength % than 85 than 85 than 85 than 85 Retention o f Not less - Notless Notless - Not less elongation % t
20、han 80 than 75 than 85 than 75 - 6.9 ensile est after ieating loo O C +_ 2 “C 120 O C +: 3 “C Notless Notless Notless Notless Notless Notless 14.7 (1.5 12.7 1.3 11.8 (1.2) 14.7 (1.51 12.7 (1.3) 11.8 1.2 strength I than 1 than 1 than 1 than 1 than 1 than 1 kgfmm21 6.3 Retention of Notless Notless Not
21、less elongation % I - 1 - 1 - 1 than80 I than75 1 than80-I No breakage at a temperature in Table 4 1 6.6 I AW temperature resistance I ., . . . . . . _. . _. . I Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=Hong Kong Polytechnic Univ/9976803100 Not for Resa
22、le, 10/02/2005 23:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- The Standard is downloaded from Standard Sharing 免费标准下载网( w w w . f r e e b z . n e t ) 免费标准下载网( w w w . f r e e b z . n e t ) 无需注册, 即可下载 STD-JIS K b723-ENGL 1995 4933b08 05b30b5 Tlb W 3 K 6723 : 1995
23、4 Colour The colour of compounds shall be as agreed between the parties concerned. 5 Material and process method The compounds shall be the material of granular form or powder form processed by mixing necessary plasticizer, stabilizer, lubricant, filler, coloring agent, etc., with polyvinyl chloride
24、 as main material. 6 Test methods 6.1 Method for sampling At random take one sample for each lot of compounds of the quality considerable same and take it as test sample. In this case, take the quantity required for carrying out each test in 6.3 to 6.9 as one sample. 6.2 Preparation, annealing and c
25、onditioning of test piece The preparation, annealing and conditioning of test piece shall be in accordance with the methods specified as follows. However, when the test is carried out under conditions other than the following methods according to special agreements between the parties concerned, cle
26、arly record the conditions on the test results. (1) Preparation of test piece Mix the sample taken according to 6.1 by roll milling under the optimum condition, and form the sheets of specified thickness by compression. Cut or punch out the test piece of specified shape from the formed sheets by the
27、 specified method. (2) Annealing Unless specially specified, do not carry out annealing. (3) Conditioning Unless specially specified, condition the test piece at a temperature of 23 “C k 2 “C for not less than 1 h before test. 6.3 Tensile test The tensile test shall be carried out in accordance with
28、 JIS K 7113. In this case, for the test machine, the tensile test machine of pendulum type may be used. For the test piece, that of No. 2 shall be used. After leaving the sheets of 1.00 mmk0.15 mm in thickness formed according to 6.2 (1) at room temperature for not less than 12 h, they shall be punc
29、hed out. The test shall be carried out in the room at a temperature of 23 “C I 2 “C and the test speed shall be 200 mm/mink 10 %. The test shall be carried out concerning 5 test pieces, and the mean value of them shall be obtained. 6.4 Tensile test after heating 6.4.1 Apparatus For the apparatus for
30、 tensile test after heating, that of type B specified in JIS K 7212 shall be used. The test piece shall be heated with vertically attaching to the frame for attaching test piece. The test pieces shall not touch each other or the wall of oven. Anything action on each other shall not be put in the app
31、aratus at the same time. Furthermore, the inner volume of oven shall be not less than 100 ml per 1 g of test piece. 6.4.2 Operation Make the test piece of No. 2 specified in 6.3 and scribe the marked line on it. Measure its thickness with the dial gauge of scale interval 0.01 mm specified in JIS B 7
32、503. Then, after heating it in the oven conditioned by heating at a temperature given in Table 3 for 120 h, take it out and leave it in an atmosphere at a temperature of 23 “C 2 2 “C for not less than 12 h. Carry out the tensile test specified in 6.3 within 48 h. Copyright Japanese Standards Associa
33、tion Provided by IHS under license with JSALicensee=Hong Kong Polytechnic Univ/9976803100 Not for Resale, 10/02/2005 23:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 免费标准下载网( w w w . f r e e b z . n e t ) 免费标准下载网( w w w . f r e e b z . n e t ) 无需注册, 即可下载 STD-JIS K b
34、723-ENGL 1995 4933608 05bLObb 952 W Classification Nos. 1,2 and 3 of Class 1 Nos. 1, 2 and 3 of Class 2 4 K 6723 : 1995 Temperature of oven “C 100 t 2 120 I3 Table 3 Temperature of oven Calculate the retention of tensile strength and the retention of elongation after heating from the following formu
35、lae : m L Z LI 7 L = - x 100 where, 7T: retention oL tensile strength rL: retention of elongation (%) T, : tensile strength before heating (MPa) kgf/mm2 T,: tensile strength after heating (MPa) kgf/mm2 L : elongation before heating (%) L2 : elongation after heating (%) Carry out each test concerning
36、 5 test pieces, and obtain the mean value of them. 6.5 Test for heat deformation 6.5.1 Test machine For the test machine for heat deformation, that equipped with the following conditions shall be used. (1) The test machine shall be equivalent to the plastometer of parallel plate form, and shall be a
37、ble to add accurately the load of 9.806 7 N 1 O00 gf on the test piece. (2) The parallel plate shall be equipped with the dial gauge of scale interval 0.01 mm specified in JIS B 7503, or with other measuring device with the accuracy equal or superior thereto, and shall be able to accurately measure
38、the relative travelling between the upper plate and the lower one of test piece to 0.01 mm. 6.5.2 Operation Take out the test piece of about 35 mm X 35 mm from the sample of 2.0 mm kO.2 mm in thickness manufactured according to 6.2 (i), and measure its thickness before heating at ordinary temperatur
39、e with the dial gauge of scale interval 0.01 mm specified in JIS B 7503 or with other measuring device having the accuracy equal or superior thereto. Heat this test piece and the inner part of test machine for heat deformation at a temperature of 120 “c k 3 OC. Put the metal rod of the dimension giv
40、en in Fig. 1 between the parallel plates of test machine for heat deformation as shown in Fig. 2 (a), and read the graduation of dial gauge at that time. Thereafter, put the preheated test piece on the metal rod as shown in Fig. 2 (b), and put it between the parallel plates. Add the load of 9.806 7
41、N 1 O00 gf through the upper parallel plate. After heating it as it is at a test temperature of 120 O C zk 3 “c for 1 h, read the graduation of dial gauge. Take the difference between the readings of dial gauge as the thickness after heating. Calculate the heat deformation rate from the following fo
42、rmula : ? Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=Hong Kong Polytechnic Univ/9976803100 Not for Resale, 10/02/2005 23:03:34 MDTNo reproduction or networking permitted without license from IHS -,-,- The Standard is downloaded from Standard Sharing 免费标准
43、下载网( w w w . f r e e b z . n e t ) 免费标准下载网( w w w . f r e e b z . n e t ) 无需注册, 即可下载 b Y I f k / / . . : / , / , , , / / * , / / , .7 7-6.420.2 4 =i 8.0202 / Test -1 piece ! - z 25.0t5.0 STD*JIS K 6723-ENGL 1995 O 4933608 05bLOb7 99 5 K 6723 : 1995 x 100 ti - t 2 ti d T = - where, dT : heat deformat
44、ion rate (%) t I : thickness before heating (mm) tz : thickness after heating (mm) Carry out the test concerning 3 test pieces and obtain the mean value of them. 30 Fig. 1 Metal rod (a) Direction of pressure I ,-Parallel plate (b) Direction o f pressure I I Fig. 2 Method for measuring thickness of t
45、est piece after heating 6.6 Test for low temperature resistance 6.6.1 Apparatus The apparatus for low temperature resistance test shall be in accordance with JIS K 7216. In this case, the gripping device and the impact hammer shall be as shown in Fig. 3. Unit : mm Impact hammer , g,A + ( ; . y p p i
46、 n g device for test piece R1.62 0.1 , . / / Fig. 3 Gripping device for test piece and impact hammer Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=Hong Kong Polytechnic Univ/9976803100 Not for Resale, 10/02/2005 23:03:34 MDTNo reproduction or networking perm
47、itted without license from IHS -,-,- 免费标准下载网( w w w . f r e e b z . n e t ) 免费标准下载网( w w w . f r e e b z . n e t ) 无需注册, 即可下载 STD=JIS K b723-ENGL 1995 4933b08 05bLObB 725 6 K 6723 : 1995 6.6.2 Operation Prepare the test piece of 38.0 m m I 2.0 mm in length, 6.0 mm k 0.4 mm in width and 2.0 mmk 0.2 m
48、m in thickness from the sample manufactured in accordance with 6.2 (1). Take the liquid giving no effect on the test piece at a temperature given in Table 4 as the heat transfer medium ( I ) , (hereinafter referred to as the “medium”), and preliminarily put the medium into the test vessel. Condition it at a temperature given in Table 4. Attach the test piece to the gripping device, and record the temperature after dipping it into the medium for 3.0 mint0.1 min. Add an impact once to it with