ASD-STAN PREN 4708-101-2015 Aerospace series Sleeving heat-shrinkable for binding insulation and identification Part 101 Polyolefin sleeving Operating temperatures - 55 to 135 Prod.pdf

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1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 4708-101 Edition P 1 July 2015 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.org ICS: Descriptors: ENGLISH VERSION

2、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 jonction, isolement et identification Partie 101 : Gaine polyolfine Tempratures d

3、utilisation 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 Produknorm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN

4、(The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the

5、technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (Eur

6、opean Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Editi

7、on approved for publication 1st July 2015 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2015 by ASD-STAN prEN 4708-101:2015 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Terms and definitions . 4 4 Required chara

8、cteristics . 4 5 Quality assurance 10 6 Designation 11 7 Labelling and packaging .11 8 Technical specification .11 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN de

9、fined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4708-101:2015 (E) 3 1 Scope This standard specifies the required characteristics for four types of heat-shrinkable polyolefin sleevings for use in aircraft electrical systems at operating temperature

10、s 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 components and delicate wiring need protection from excessive heat during shrinking. Type B

11、: 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 retarded, shrink ratio 2:1 and 3:1 This sleeving is flexible and not flame retarded and is

12、 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 sleevings are normally supplied with internal diameters up to 102 mm for shrink ratios of

13、 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 C is transparent, is not flame retarded and does not meet the flammability requiremen

14、ts 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 listed in Tables 5, 6 and 7 except for dimensions and mass. 2 Normative references Th

15、e 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 latest edition of the referenced document (including any amendments) applies. EN 3909,

16、Aerospace series Test fluids and test methods for electric components and sub-assemblies EN 4708-001, Aerospace series Sleeving, heat-shrinkable, for binding, insulation and identification Part 001: Technical specification IEC 60684-1:2011, Specification for flexible insulating sleeving Part 1: Defi

17、nitions and general requirements 1) IEC 60684-2:2005, Flexible insulating sleeving 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

18、 1) Published by: IEC International Electrotechnical Commission. http:/www.iec.ch/ prEN 4708-101:2015 (E) 4 ISO 11075:2007, Aircraft De-icing/anti-icing fluids ISO type I ISO 11078:2007, Aircraft De-icing/anti-icing fluids ISO types II, III and IV MIL-PRF-87937, Performance specification: cleaning c

19、ompound, 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 Ethyl Ketone 4) 3 Terms and definitions For the purposes of this document, the terms and definitions given in IE

20、C 60684-1 apply. 4 Required characteristics 4.1 Dimensions and mass See Tables 1, 2, 3 and 4. Table 1 Dimensional and mass requirements for Types A, B and C, shrink ratio 2:1 Size code Internal diameter mm Recovered wall thickness mm Mass per unit length g/m max. Expanded min. Recovered max. Type A

21、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 7,8 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

22、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 0,25 164 159 118 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 2) Published

23、 by: Department of Defense (DoD). http:/www.defenselink.mil/ 3) Published by: SAE National (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/ prEN 4708-101:2015 (E) 5 Table 2 Dimensional and mas

24、s 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 Type 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

25、 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 Table 3 Dimensional and mass requirements for Type B, shrink ratio 4:1 Size code Internal diameter mm Recovered wall thicknes

26、s 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 50,4/12,7 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

27、,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 prEN 4708-101:2015 (E) 6 Table 4 Dimensions and mass requirements for Type 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.

28、 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 Conditions 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

29、 to testing. 4.3 Tests See Table 5. prEN 4708-101:2015 (E) 7 Table 5 Tests (1 of 3) Designation of the test IEC 60684-2 Clause or subclause Requirements Remarks 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 rat

30、io 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 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.) Lo

31、ngitudinal 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 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

32、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 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

33、.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 diameter 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

34、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. Types 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

35、 Method C 30 s max. 75 mm max. Flame retarded types only prEN 4708-101:2015 (E) 8 Table 5 Tests (2 of 3) Designation of the test IEC 60684-2 Clause or subclause Requirements Remarks Oxygen index 27 Not applicable Transparency 28 Printing shall be legible. Transparent sleeving only Corrosion resistan

36、ce (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 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

37、 the fastness standard. After this test transparent sleevings, type C, shall meet the requirements for transparency. Fastness standard No. 5 Resistance to selected 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 an

38、d 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 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,

39、5 % max. Restricted shrinkage Visual 41 No cracking or splitting Perform the visual determination only Colour stability to heat 42 Not applicable See Clause 34. Smoke index 43 Not applicable Toxicity 44 Not applicable Halogen content 45 Not applicable Acid gas generation 46 Not applicable Long term

40、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 shear at elevated temperature 52 Not applicable Dynamic shear after heat shock and heat ageing 53 Not applicable Rolling drum peel to aluminium

41、54 Not applicable Aluminium rod dynamic shear 55 Not applicable prEN 4708-101:2015 (E) 9 Table 5 Tests (3 of 3) Designation of the test IEC 60684-2 Clause or subclause Requirements Remarks Sealing 56 Not applicable Adhesive T peel strength 57 Not applicable Fungus resistance Tensile strength Elongat

42、ion at break 19.1 and 19.2 19.1 and 19.2 10 MPa min. 250 % min. The test method shall be ISO 846, method B. 56 days exposure Shelf life a EN 4708-001 subclause 4.6 The dimensions shall be as specified in Tables 1, 2, 3 and 4. Condition the sleeving for 60 months at ambient temperature prior to testi

43、ng; interim measurements shall be made every 12 months. Artificial weathering Tensile strength Elongation at break EN 4708-001 Table 2 7 MPa min. 150 % min. a Due to the duration of this test, lack of completion of this test shall not preclude certification of this sleeving. Additional evidence of c

44、ompliance with this requirement in the interim shall be as agreed between the supplier and/or the approval authority and/or the customer. 4.4 Breakdown voltage The breakdown voltage shall be determined by any of the methods described in 21.2, 21.3 or 21.4 of IEC 60684-2. The central value shall comp

45、ly with the minimum value in Table 6. The rate of application of the voltage shall be 500 V/s. Table 6 Requirements for breakdown voltage Nominal recovered wall thickness a mm Breakdown voltage min. kV 0,45 9,0 0,50 10,0 0,55 10,5 0,65 12,0 0,75 13,5 0,85 15,0 0,90 16,0 1,00 17,5 1,10 18,5 1,15 19,0

46、 1,25 20,0 1,40 22,0 a For non-standard wall thicknesses, the electric strength shall be at least that of the next smaller standard wall thickness. For wall thicknesses smaller than 0,45 mm, the electric strength shall be at least 20,0 kV/mm. prEN 4708-101:2015 (E) 10 Table 7 Resistance to selected

47、fluids EN3909 No. Fluid family Type Fluid to be used Immersion temperature 2 C 1a Fuels Gasoline ISO 1817 Liquid B 40 1b Kerosene ISO 1817 Liquid FB 23 1c Biofuel Not applicable 2a Hydraulic Fluids Phosphate based ISO 1817 Liquid 103 70 2b Silicone based NATO-S-1714 50 2c Mineral based NATO-H-520 23

48、 3a Oils Mineral base NATO-0-1176 MMD-90 23 3b NATO-0-142 23 3c Synthetic base - diester ISO 1817 Liquid 101 23 3d Synthetic base - polyester NATO-0-160 OX26 23 4a Cleaning Fluids Solvent Isopropyl alcohol or Ethanol 23 4c Propanol 25 % White spirit 75 % v/v 23 4d Methylethylketone ASTM D740 23 4e Detergent MIL-PRF-87937 23 4f Sullage 23 5a De-icing Runway de-icing Inhibited potassium acetate in water, 50 % 23 5b Aircraft de-icing on the ground Ethylene glycol 80 % Water 20 % (AMS 1428 or Monopropolene Glyco ISO 11075) ISO 11078 23 5d Aircraft De-icin