ASD-STAN PREN 4840-101-2017 Aerospace series Heat shrinkable moulded shapes Part 101 Polyolefin semi-rigid limited fire hazard Temperature range C 30 to 105 Product standard (Editi.pdf

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1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM ASD-STAN prEN 4840-101 Edition P 1 June 2017 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

2、 VERSION Aerospace series Heat shrinkable moulded shapes Part 101: Polyolefin, semi-rigid, limited fire hazard Temperature range 30 C to 105 C Product standard Luft- und Raumfahrt Wrmeschrumpfende Bauteile Teil 101: Polyolefin, halbsteif, reduziertes Brandverhalten Temperaturbereich 30 C bis 105 C P

3、roduktnormen Srie arospatiale Manchons thermortractables Partie 101 : Semi-rigides en polyolfine, risque de feu limit Temprature 30 C 105 C Norme de produit This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of

4、 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 technical content shall not be changed to an extent

5、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, the ASD-STAN prEN will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization)

6、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. ASD-STAN Technical Committee approves that

7、: “This document is published by ASD-STAN for the needs of the European Aerospace Industry. The use of this standard is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” ASD-

8、STAN reviews each standard and technical report at least every five years at which time it may be revised, reaffirmed, stabilized or cancelled. ASD-STAN invites you to send your written comments or any suggestions that may arise. All rights reserved. No parts of this publication may be reproduced, s

9、tored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of ASD-STAN. Order details: E-mail: salesasd-stan.org Web address: http:/www.asd-stan.org/ Edition approved for publication 1st Jun

10、e 2017 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2017 ASD-STAN prEN 4840-101:2017 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Terms and definitions . 4 4 Required characteristics 4 5 Quality assurance 8 6 D

11、esignation . 9 7 Labelling and packaging . 9 8 Technical specification . 9 Annex A (informative) Adhesive compatibility guide for EN 4840-101 moulded shapes . 10 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. After inquiries and votes carried

12、out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4840-101:2017 (E) 3 1 Scope This standard specifies the required characteristics for heat-shrinkable polyolefin semi-rigid, limited fire hazard heat-shr

13、inkable boots for use in aircraft electrical systems at operating temperatures between 30 C and 105 C. The moulded shapes may be supplied with a pre-coated adhesive. Refer to the manufacturers/suppliers for options. A guide to adhesive compatibility is given in Annex A. These moulded shapes are norm

14、ally supplied in the styles and dimensions given in EN 4840-002 Tables 1 to 22. The colour is normally black. Styles and dimensions other than those specifically listed in EN 4840-002 Tables 1 to 22 may be available as custom items. These items shall be considered to comply with this standard if the

15、y comply with the property requirements listed in Table 1 with the exception of dimensions. 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

16、. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 3909, Aerospace series Test fluids for electrical and optical components and sub-assemblies EN 4708-106, Aerospace series Sleeving, heat-shrinkable, for binding, insulation and identificati

17、on Part 106: Limited fire hazard sleeving Operating temperature 30 C to 105 C Product standard 1) EN 4840-001, Aerospace series Heat shrinkable moulded shapes Part 001: Technical specification 1) EN 4840-002, Aerospace series Heat shrinkable moulded shapes Part 002: Index of product standards and pr

18、oduct dimensions 1) IEC 60684-3, Flexible insulating sleeving Part 3: Specifications for individual types of sleeving 2) IEC 60695-11-10, Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methods 2) IEC 62329-1, Heat shrinkable moulded shapes Part 1: Definitions and

19、 general requirements 2) IEC 62329-2, Heat-shrinkable moulded shapes Part 2: Methods of test 2) IEC 60757:1983, Code for designation of colours 2) ISO 1817, Rubber, vulcanized or thermoplastic Determination of the effect of liquids MIL-PRF-87937, Performance specification: cleaning compound, aerospa

20、ce equipment 3) AMS 1476B, Deodorant, Aircraft Toilet 4) 1) Published as ASD-STAN Prestandard at the date of publication of this standard by AeroSpace and Defence industries Association of Europe - Standardization (ASD-STAN) (www.asd-stan.org) 2) Published by: International Electrotechnical Commissi

21、on (IEC) http:/www.iec.ch/ 3) Published by: Department of Defense (DoD). http:/www.defenselink.mil/ 4) Published by: SAE National (US) Society of Automotive Engineers. http:/www.sae.org/ prEN 4840-101:2017 (E) 4 3 Terms and definitions For the purposes of this document, the terms and definitions giv

22、en in IEC 62329-1 apply. 4 Required characteristics 4.1 Dimensions and mass See EN 4840-002. 4.2 Conditions of test 4.2.1 Conditions of test for the moulded shapes The moulded shapes shall be shrunk in a forced air circulation oven for (10 1) min at the temperature specified in Table 1. 4.2.2 Moulde

23、d shapes material conformance Conformance with the requirements of this specification shall be based on the results form test sheets, (2 0,15) thick, unless otherwise specified5), which shall be prepared from the same cross-linked heat shrinkable material that is used to manufacture the heat shrinka

24、ble moulded shapes. 4.2.3 Moulded shapes compatibility Conformance with the compatibility requirements of this specification shall be based on the results from the assembly configuration as shown in Figure 3 of IEC 62329-2. 4.3 Tests See Table 1. 5) A suitable size has been found to be 150 mm 150 mm

25、. prEN 4840-101:2017 (E) 5 Table 1 Tests (1 of 3) Designation of the test IEC 62329-2 Clause or Subclause Requirements Remarks Dimensions 5 EN 4840-002 Dimension tables Condition at 150 C 3 C Density 6 0,03 Max permitted deviation from manufacturers qualification values Heat shock Tensile strength E

26、longation at break 7 10 10 5 MPa min 100 % min Heat at 175 C 3 C Bending at low temperature 8 No cracks shall be visible Condition at 30 C 2 C. The mandrel diameter shall be between 20 mm 1/ 0 mm Dimensional stability during storage 9 The dimensions shall be as specified in EN 4840-002 dimension tab

27、les Tensile strength Elongation at break 10 10 7 MPa min 200 % min Use a jaw separation rate of 100 mm/min. Secant modulus at 2 % elongation 11 50 MPa min 130 MPa max Electric Strength 12 8 KV/mm Volume resistivity 13 1010 m min Flammability 16 30 s max. Test in accordance with method A of IEC 60695

28、-11-10 Oxygen Index 17 29 % min. Copper corrosion 18 None above the allowable 8 Heat for (16 0,5) h at 150 C 3C Colour fastness to light 19 The colour contrast between the exposed and unexposed parts of the specimens shall be equal to or less than that of the fastness standard. Fastness standard No.

29、 5 Resistance to selected fluids Tensile strength Elongation at break 20 10 10 4 MPa min 100 % min Use the fluids and test temperatures specified in Table 2. Immersion time (24 1) h prEN 4840-101:2017 (E) 6 Table 1 Tests (2 of 3) Designation of the test IEC 62329-2 Clause or Subclause Requirements R

30、emarks Long Term Ageing (3 000 hr) Elongation at break 21 10 100 % min Heat at 105 C 3 C Mass 22 EN 4840-002 Dimension tables Heat ageing Tensile strength Elongation at break 23 10 10 5 MPa min 100 % min Heat at 150 C 3 C Water absorption 24 0,5 Colour stability to heat 25 Not applicable Smoke Index

31、 26 20 max. Toxicity 27 5 max. Halogen content Chlorine, Bromine, Iodine Fluorine 28 28.1 28.2 0,2 max. 0,1 max. Expressed as Chlorine Acid gas generation 29 29.2 3.5 pH min. 10.5 pH max. 10.0 S/mm Resistance to mould growth Tensile Strength Elongation 30 10 10 7 MPa min. 200 % min. Method B 56 days

32、 exposure Compatibility a 31 Boot: EN4840-101-B/5-BK-W1-N Tubing: EN4708-106-12.7/6.4-BK Dynamic shear 31.1 300 N min. Test at 23 C 3 C 30 N min. Test at 105 C 3 C Static load 31.2 10 kgs Test at 23 C 3 C 0,5 kgs Test at 105 C 3 C Fluid resistance 31.3 150 N min. Use the fluids and test temperatures

33、 specified in Table 3. Immersion time (24 1) h prEN 4840-101:2017 (E) 7 Table 1 Tests (3 of 3) Designation of the test IEC 62329-2 Clause or Subclause Requirements Remarks Thermal Ageing 31.4 300 N min. Heat for (168 1) h at 100 C 3 C Peel Adhesion 31.5 60 N/25 mm Altitude immersion 31.6 109 Shelf l

34、ife b EN 4840-001 Clause 4.6 The dimensions shall be as specified in EN 4840-002 Condition the boots for 60 months at ambient temperature prior to testing; interim measurements shall be made every 12 months. Artifical weathering Tensile strength Elongation at break EN 4840-001 Table 2 10 10 5 MPa mi

35、n 100 % min a These system performance requirements are based on using W1 adhesive. When using other adhesives the performance may be different. Refer to the supplier/manufacturer. b Due to the duration of this test, lack of completion of this test shall not preclude certification of this material.

36、Additional evidence of compliance with this requirement in the interim shall be as agreed between the supplier and/or the approval authority and/or the customer. Table 2 Resistance to selected fluids (1 of 2) EN 3909 No. Fluid family Type Test fluid to be used Immersion temperature 2 C 1a Fuels Gaso

37、line ISO 1817 Liquid B 23 1b Kerosene ISO 1817 Liquid F 23 2a Hydraulic fluids Phosphate base ISO 1817 Liquid 103 23 2b Silicone base NATO-S-1714 23 2c Mineral base NATO-H-520 23 3a Oils Mineral base NATO-O-1176 23 3b NATO-O-142 23 3c Synthetic base Diester ISO 1817 Liquid 101 23 3d Synthetic base P

38、olyol ester NATO-O-160 23 prEN 4840-101:2017 (E) 8 Table 2 Resistance to selected fluids (2 of 2) EN 3909 No. Fluid family Type Test fluid to be used Immersion temperature 2 C 4a Cleaning fluids Solvent Isopropanol or Ethanol 23 4b 4c Propanol 25 % White spirit 75 % 23 4d Methylethylketone 23 4e Det

39、ergent MIL-PRF-87937 Type IV 23 4f Sullage AMS 1476B 5 % Solution 23 5a De-icing fluids Runway de-icers 50 % inhibited potassium acetate in water, 23 5b Aircraft de-icers Ethylene glycol 80 % Water 20 % v/v 23 5d NATO-S-745 23 6 Fire extinguishant Not Tested See Note. 7a Cooling Avionic Coolant ISO

40、1817 Liquid 103 23 NOTE Fire extinguishants not assessed, see EN 3909. Table 3 Resistance to selected fluids for compatibility EN 3909 No. Fluid family Type Test fluid to be used Immersion temperature 2 C 1b Fuels Kerosene ISO 1817 Liquid F 23 3d Oils Synthetic base Polyol ester NATO-O-160 23 5 Qual

41、ity assurance See EN 4840-001. prEN 4840-101:2017 (E) 9 6 Designation The moulded shapes shall be designated as shown by the following example Description EN publication number EN Part number EN4840-002 Style/size code Colour Adhesive Code* (1) Drain holes (2) Moulded shapes EN 4840 101 B/01 BK W1 D

42、 * For compatible adhesives and codes see Annex A. (1) Insert N if uncoated. (2) Insert N if no drain holes. Any abbreviation for colour shall comply with IEC 60757. Where no abbreviation is given, the colour shall be written in full. 7 Labelling and packaging See EN 4840-001. 8 Technical specificat

43、ion See EN 4840-001. prEN 4840-101:2017 (E) 10 Annex A (informative) Adhesive compatibility guide for EN 4840-101 moulded shapes Table A.1 Bonding adhesives Description Properties Guide to temperature Guide to storage life Compatible sleevings Compatible sleeving Type code Range C IEC 60684 Part 3 E

44、N 4708 R Curable single component Thermosetting flexible fluid resistant 75 to 150 2 years at below 25 C 216 106 S Curable hot melt Thermosetting flexible 75 to 150 2 years at below 25 C 216 106 U Epoxy resin with polyamine/amide hardener Thermosetting more flexible than type Z 75 to 150 2 years at below 25 C 216 106 W1 Hot melt wide temperature range Thermoplastic flexible 55 to 105 N/A 216 106 W2 Hot melt limited temperature range Thermoplastic flexible 40 to 70 N/A 216 106 Z Epoxy resin with polyamide hardener Thermosetting fluid resistant 55 to 135 1 year at below 25 C 216 106