1、BS EN 4708-101:2017Aerospace series Sleeving,heat-shrinkable, for binding,insulation and identificationPart 101: Polyolefin sleeving Operatingtemperatures -55 C to 135 C ProductstandardBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 4708-101:2017 BRITISH STANDA
2、RDNational forewordThis British Standard is the UK implementation of EN 4708-101:2017. The UK participation in its preparation was entrusted to TechnicalCommittee ACE/6, Aerospace avionic electrical and fibre optic technology.A list of organizations represented on this committee can be obtained on r
3、equest to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 84523 9 ICS 49.060 Compliance with a Britis
4、h Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 4708-101:2017EUROPEAN STANDARD NORME EUROPE
5、NNE EUROPISCHE NORM EN 4708-101 March 2017 ICS 49.060 English Version Aerospace series - Sleeving, heat-shrinkable, for binding, insulation and identification - Part 101: Polyolefin sleeving - Operating temperatures -55 C to 135 C - Product standard Srie arospatiale - Manchons thermortractables, de
6、jonction, isolement et identification - Partie 101: Gaine polyolfine - Tempratures dutilisation -55 C 135 C - Norme de produit Luft- und Raumfahrt - Wrmeschrumpfender Schlauch zur Befestigung, Isolierung und Identifizierung - Teil 101: Polyolefin Schlauch - Temperaturbereich -55 C bis 135 C - Produk
7、tnorm This European Standard was approved by CEN on 9 January 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographica
8、l references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility o
9、f a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Ma
10、cedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALI
11、SATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4708-101:2017 EBS EN 4708-101:2017EN 4708-101:2017 (E) 2 Contents Page Euro
12、pean foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 5 4 Required characteristics 5 5 Quality assurance 11 6 Designation . 12 7 Labelling and packaging . 12 8 Technical specification . 12 BS EN 4708-101:2017EN 4708-101:2017 (E) 3 European foreword This document (EN 4708-101:2
13、017) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of
14、 the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2017, and conflicting national standards shall be withdrawn at the latest
15、by September 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national sta
16、ndards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
17、Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 4708-101:2017EN 4708-101:2017 (E) 4 1 Scope This European Standard specifies the required characteristics for four types of heat-shrinkable
18、polyolefin sleevings for use in aircraft electrical systems at operating temperatures between 55 C and 135 C. Type A: Very flexible, flame retarded, shrink ratio 2:1 This sleeving has very good flexibility, is flame retarded and will shrink at low temperatures. It is suitable where sensitive compone
19、nts and delicate wiring need protection from excessive heat during shrinking. Type B: Flexible, flame retarded, shrink ratio 2:1, 3:1 and 4:1 This sleeving is flexible and flame retarded. It is suitable for general purposes and is available with high shrink ratios. Type C: Flexible, not flame retard
20、ed, shrink ratio 2:1 and 3:1 This sleeving is flexible and not flame retarded and is available in two shrink ratios. Type D: Semi-rigid, flame retarded, shrink ratio 2:1 This sleeving is semi-rigid and flame retarded. It is suitable where strain relief and mechanical support are required These sleev
21、ings are normally supplied with internal diameters up to 102 mm for shrink ratios of 2:1 and 4:1 and up to 39 mm for shrink ratios of 3:1 and in the following colours for type B, black, brown, red, yellow, green, blue, orange, violet, grey, white and green/yellow. Types A and D are black only. Type
22、C is transparent, is not flame retarded and does not meet the flammability requirements of EN 4708-001. Sizes or colours other than those specifically listed in this standard may be available. These items shall be considered to comply with this standard if they comply with the property requirements
23、listed in Tables 5, 6 and 7 except for dimensions and mass. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the la
24、test edition of the referenced document (including any amendments) applies. EN 3909, Aerospace series Test fluids and test methods for electrical and optical components and sub-assemblies EN 4708-001, Aerospace series Sleeving, heat-shrinkable, for binding, insulation and identification Part 001: Te
25、chnical specification IEC 60684-1:2011, Specification for flexible insulating sleeving Part 1: Definitions and general requirements 1)1)Published by: IEC International Electrotechnical Commission. http:/www.iec.ch/ BS EN 4708-101:2017EN 4708-101:2017 (E) 5 IEC 60684-2:2005, Flexible insulating sleev
26、ing Part 2: Methods of test 1)IEC 60757:1983, Code for designation of colours 1)ISO 846:1997, Plastics Evaluation of the action of micro-organisms ISO 1817:2005, Rubber, vulcanized Determination of the effect of liquids ISO 11075:2007, Aircraft De-icing/anti-icing fluids ISO type I ISO 11078:2007, A
27、ircraft De-icing/anti-icing fluids ISO types II, III and IV MIL-PRF-87937, Performance specification: cleaning compound, aerospace equipment 2)AMS 1428:2013, Fluid, Aircraft Deicing/Anti-Icing, Non-Newtonian (Pseudoplastic), SAE Types II, III, and IV 3)ASTM D740, Standard Specification for Methyl Et
28、hyl Ketone 4)3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60684-1 apply. 4 Required characteristics 4.1 Dimensions and mass See Tables 1, 2, 3 and 4. 2)Published by: Department of Defense (DoD). http:/www.defenselink.mil/ 3)Published by: SAE Natio
29、nal (US) Society of Automotive Engineers.http:/www.sae.org/ 4)Published by: ASTM National (US) American Society for Testing and Materials.http:/www.astm.org/ BS EN 4708-101:2017EN 4708-101:2017 (E) 6 Table 1 Dimensional and mass requirements for Types A, B and C, shrink ratio 2:1 Size code Internal
30、diameter mm Recovered wall thickness mm Mass per unit length g/m max. Expanded min. Recovered max. Type A Type B Type C 1,2/0,6 1,2 0,6 0,45 0,10 2,8 2,7 2,0 1,6/0,8 1,6 0,8 0,45 0,10 3,3 3,2 2,3 2,4/1,2 2,4 1,2 0,50 0,10 4,7 4,6 3,4 3,2/1,6 3,2 1,6 0,50 0,10 5,8 5,6 4,1 4,8/2,4 4,8 2,4 0,50 0,10 7,
31、8 7,6 5,7 6,4/3,2 6,4 3,2 0,65 0,15 14,0 13,6 10,0 9,5/4,8 9,5 4,8 0,65 0,15 19,6 19,0 14,1 12,7/6,4 12,7 6,4 0,65 0,15 25,0 24,4 18,1 19,0/9,5 19,0 9,5 0,75 0,15 40,1 39,4 29,4 25,4/12,7 25,4 12,7 0,90 0,15 63,0 61,2 45,3 38,0/19,0 38,0 19,0 1,00 0,20 106 103 76,1 51,0/25,4 51,0 25,4 1,15 0,25 164
32、159 118 76,0/38,0 76,0 38,0 1,25 0,25 259 252 186 102,0/51,0 102,0 51,0 1,40 0,25 380 369 273 Table 2 Dimensional and mass requirements for Types B and C, shrink ratio 3:1 Size code Internal diameter mm Recovered wall thickness mm Mass per unit length g/m max. Expanded min. Recovered max. Type B Typ
33、e C 1,5/0,5 1,5 0,5 0,45 0,10 2,5 1,8 3,0/1,0 3,0 1,0 0,55 0,10 4,6 3,4 6,0/2,0 6,0 2,0 0,65 0,10 8,8 6,5 9,0/3,0 9,0 3,0 0,75 0,15 14,9 11,0 12,0/4,0 12,0 4,0 0,75 0,15 18,7 13,9 18,0/6,0 18,0 6,0 0,85 0,20 31,4 23,2 24,0/8,0 24,0 8,0 1,00 0,20 46,8 34,7 39,0/13,0 39,0 13,0 1,10 0,20 82,1 60,8 BS E
34、N 4708-101:2017EN 4708-101:2017 (E) 7 Table 3 Dimensional and mass requirements for Type B, shrink ratio 4:1 Size code Internal diameter mm Recovered wall thickness mm Mass per unit length g/m max. Expanded min. Recovered max. 25,4/6,6 25,4 6,6 1,52 0,20 47,8 38,1/9,5 38,1 9,5 1,52 0,20 67,8 50,4/12
35、,7 50,4 12,7 1,52 0,20 87,9 76,2/19,1 76,2 19,1 1,52 0,20 128 101,6/25,4 101,6 25,4 1,52 0,20 163 Repair sleeves 25,4/7,0 25,4 7,0 1,14 0,18 47,8 39,0/13,0 39,0 13,0 1,14 0,18 87,9 76,2/20,6 76,2 20,6 1,14 0,18 128 101,6/26,7 101,6 26,7 1,14 0,18 163 Table 4 Dimensions and mass requirements for Type
36、 D, shrink ratio 2:1 Size code Internal diameter mm Recovered wall thickness mm Mass per unit length g/m max. Expanded min. Recovered max. 3,2/1,6 3,2 1,6 0,80 0,15 4,2 4,8/2,4 4,8 2,4 0,80 0,20 7,4 6,4/3,2 6,4 3,2 0,90 0,30 9,5 9,5/4,8 9,5 4,8 1,00 0,30 16,5 12,7/6,4 12,7 6,4 1,20 0,40 20,9 4.2 Con
37、ditions of test Unless otherwise specified, the sleeving shall be shrunk in a forced air circulation oven for (5 1) min at 200 C 5 C prior to testing. 4.3 Tests See Table 5. BS EN 4708-101:2017EN 4708-101:2017 (E) 8 Table 5 Tests Designation of the test IEC 60684-2 Clause or subclause Requirements R
38、emarks Dimensions 3 internal diameter 3.1.2 Tables 1, 2, 3 and 4 wall thickness 3.3.2 Tables 1, 2, 3 and 4 concentricity 3.3.3 expanded Shrink ratio 2:1 65 % min. Shrink ratio 3:1 60 % min. Shrink ratio 4:1 50 % min. recovered All types 85 % min. Density 4 Not applicable See Clause 38. Heat shock 6
39、Heat at 200 C 5 C Tensile strength 19.1 and 19.2 10 MPa min. (Type D: 12 MPa) Elongation at break 19.1 and 19.2 200 % min. (Type D: 100 % min.) Longitudinal change 9 Shrink ratio 2:1 and 3:1 between + 5 % and 10 % Shrink ratio 4:1 + 5 % and 50 % Heat the expanded sleeving at 200 C 5 K for (5 1) min
40、Bending after heating 13 Not applicable See Clauses 6, 39 and 50. Bending at low temperature 14 No cracks shall be visible Condition at 55 C 3 C. For strips, the mandrel shall be no more than 10 times the wall thickness. Full section sleeving is tested unfilled and the mandrel shall be no more than
41、10 times the outer diameter. Dimensional stability during storage 16 The dimensions shall be as specified in Tables 1, 2, 3 and 4. Tensile strength 19.1 and 19.2 Types A, B and C: 10 MPa min. Type D: 14 MPa Use a jaw separation rate of 100 mm/min. Below 6,5 mm diameter test as sleeving, at 6,5 mm di
42、ameter and above test as dumb-bells. Elongation at break 19.1 and 19.2 250 % Secant modulus at 2 % elongation 19.4 Type A: 100 MPa max. Types B and C between 50 MPa and 175 MPa Type D: 200 MPa min. Breakdown voltage 21 Table 6 Volume resistivity 23 at ambient temperature 23.4.2 Type A: 1010 m min. T
43、ypes B, C and D: 1012 m min. after damp heat 23.4.4 Type A: 109 m min. Type B, C and D: 1011 m min. Flame propagation Time of burning Length burned 26 Method C 30 s max. 75 mm max. Flame retarded types only Oxygen index 27 Not applicable Transparency 28 Printing shall be legible. Transparent sleevin
44、g only BS EN 4708-101:2017EN 4708-101:2017 (E) 9 Designation of the test IEC 60684-2 Clause or subclause Requirements Remarks Corrosion resistance (Tensile strength and elongation) 32 Not applicable See Clause 33. Copper corrosion 33 None above the allowable 8 % max. Heat for (16 0,5) h at 175 C 3 C
45、 Colour fastness to light 34 The colour contrast between the exposed and unexposed parts of the specimens shall be equal to or less than that of the fastness standard. After this test transparent sleevings, type C, shall meet the requirements for transparency. Fastness standard No. 5 Resistance to s
46、elected fluids Tensile strength Elongation at break 36 19.1 and 19.2 19.1 and 19.2 5 MPa min. Type D 8 150 % min. Type D 100 % Use the fluids and test temperatures specified in Table 7. Immersion time (24 1) h Thermal endurance 37 Not applicable See Clause 50. Mass per unit length 38 Tables 1, 2, 3
47、and 4 Heat ageing Elongation at break 39 19.1 and 19.2 150 % min. Heat at 175 C 3 C Water absorption 40 Type A: 0,75 % max. Types B, C and D: 0,5 % max. Restricted shrinkage Visual 41 No cracking or splitting Perform the visual determination only Colour stability to heat 42 Not applicable See Clause
48、 34. Smoke index 43 Not applicable Toxicity 44 Not applicable Halogen content 45 Not applicable Acid gas generation 46 Not applicable Long term ageing Elongation at break 50 19.1 and 19.2 125 % min. Ageing temperature shall be 135 C 3 C Dynamic shear at ambient temperature 51 Not applicable Dynamic
49、shear at elevated temperature 52 Not applicable Dynamic shear after heat shock and heat ageing 53 Not applicable Rolling drum peel to aluminium 54 Not applicable Aluminium rod dynamic shear 55 Not applicable Sealing 56 Not applicable Adhesive T peel strength 57 Not applicable Fungus resistance Tensile strength Elongation at break 19.1 and 19.2 19.1 and
