CES-3-D1 (450122-001) - Tyco Electronics

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Tyco Electronics Corporation

300 Constitution Drive

Menlo Park, CA 94025 USA

Specification

This Issue:

Date:

Replaces:

RW-2019

ISSUE 1

November 16, 2005

None

Raychem S1297 and /97

Hot Melt Adhesive

1.0 SCOPE

This specification covers the requirements for one type of hot melt adhesive for use with Raychem sleeving

and molded components. It is available in tape form or pre-coated in tubing and molded components. It is

suitable for bonding to various cable jacket substrates including polyethylene, PVC and polychloroprene

(neoprene) as well as metals such as steel and aluminum.

2.0 REQUIREMENTS

Composition and Appearance

The hot melt adhesive shall be in tape form or pre-coated on molded shapes or tubing. It shall be

homogeneous and free of foreign particles or other contaminants.

3.0 PROPERTIES

The adhesive shall meet the requirements of Tables 1 and 2. The product is capable of a continuous

operating temperature of up to 90°C (194°F).

4.0 QUALITY ASSURANCE PROVISIONS

4.1 Classification of Tests

4.1.1 Qualification Tests

Qualification tests are those performed on the adhesive submitted for qualification as a satisfactory product

and shall consist of all the tests listed in this specification.

4.1.2 Production Routine Tests

Production Routine Tests shall be performed on every batch, unless otherwise specified and shall consist of

the following: visual, ring and ball softening and Brookfield viscosity.

5.0 SAMPLING INSTRUCTIONS

5.1 Test Sample Preparation

Test samples shall be in the form of compression-molded sheets prepared from the adhesive pellets or

from a standard tape form, 1 inch wide by 0.010 inch thick (25 mm X 0.25 mm). The sheets shall be

6 inch X 6 inch X 0.035 inch (152 mm X 152 mm X 0.89 mm, nominal) except where otherwise

specified. Sheets shall be prepared in a heated press at a temperature of 150 ± 5°C (302 ± 9°F). The

sheets shall be homogeneous and free from voids.

5.2 Qualification Test Samples

Sufficient adhesive samples must be available to satisfy all the test requirements listed in this specification.

5.3 Production Routine Test Samples

Production Routine test samples shall be taken from each batch of material. A batch shall consist of all

adhesive from the same production run offered for inspection at the same time.

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6.0 TEST PROCEDURES - Physical

6.1 Visual Inspection

The test specimens shall be visually examined to insure that the material is homogenous and free of foreign

particles or other contaminants.

6.2 Adhesive Peel Strength

Peel strength shall be determined using an uncoated BSTS outer tubing recovered and adhered to a

mandrel 1 to 2 inches in diameter. Mandrel materials shall be one or more of the following materials:

polyethylene heat shrink tubing or molded parts, polychloroprene heat shrink tubing or rigid aluminum

pipe.

6.2.1 The specific mandrel materials and their respective surface preparation and bonding techniques are

described in Appendices A and B.

6.2.2 After applying and cooling to room temperature, the sleeving shall be cut into 1 inch wide sectio ns as

illustrated in Figure 1. Each specimen shall be cut along the edge of the adhesive-free areas as

illustrated in Figure 1.

6.2.3 The specimen shall be placed in a tensile testing machine, with the specimen around the positioning

mandrel and the free end of the specimen inserted into the ten s ile testing machine jaw as illustrated in

Figure 2. The holding fixture shall be constructed so that the yoke is free to rotate during testing. Testing

shall be with a jaw separation speed of 2 inches (51 mm) per minute. Readings of peel force shall be taken

at every ½ inch of jaw sep aration after a one inch initial separation (electronic measurments shall be

programmed accordingly). The results of five specimens shall be averaged and recorded as the peel

strength for a given lot.

6.3 Corrosive Effect

The corrosive effect shall be determined in accordance with ASTM D 2671 Procedure B. Uncoated BSTS

tubing (2 inch (51 mm) diameter) shall be used to hold the adhesive in contact with 1 inch copper tubing.

The heat shrinkable sleeving shall be recovered over the copper tubing and the adhesive material. The

samples shall be heated in an air-circulating oven for 16 hours at 120 ± 2 °C (248 ± 4°F). If removal for

audit is difficult, specimens may be immersed in toluene at 50°C (122°F) for two hours to aid in the release

from the copper tubing.

6.4 Lap Shear Test (Aluminum to Aluminum)

The lap shear shall be determined in accordance with ASTM D1002. The test assemblies shall be

conditioned for 20 minutes at 150 ± 5°C (302 ± 9°F) under a pressure of 2 pounds /in 2 (psi). The test shall

be run using a 1 inch x 1 inch x 0.035 inch (25 mm x 25 mm x 0.89 mm) adhesive piece to bond the 1 inch

wide aluminum strips together.

6.5 Fluid Resistance

Three 1 inch x 1 inch x 0.035 inch thick (25 mm x 25 mm x 0.89 mm) square specimens are to be prepared

for fluid resistance. The specimens shall be weighed before and after immersion in the listed fluids. The

specimens shall be placed in the fluids shown in Table 2 for the time and temperature indicated. The

amount of fluid shall not be less than 20 times the volume of the specimens. The specimens shall remain in

the fluid for the specified period and then shall be removed, wiped off with a towel or kimwipe and

allowed to sit for 30 ± 5 minutes prior to weighing the second time. The average change in weight of the

three specimens shall be reported in terms of % weight uptake.

6.6 Viscosity

Viscosity shall be tested in accordance with ASTM D1084 on specimens prepared in accordance with

paragraph 5.1.

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7. 0 PREPARATION FOR DELIVERY

7.1 Packaging

Unless otherwise specified, the adh esive shall be in a package co ntaining a measured quantity of material,

in conformance with good commercial practice.

7.2 Marking

Unless otherwise specified, each package of adhesive shall be marked with the product designation, the

batch or lot number and manufacturing date.

8. 0 RELATED DOCUMENTS

ASTM D149 Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating

Materials at Commercial Power Frequencies

ASTM D257 Test Methods for D-C Resistance or Conductance of Insulating Materials

ASTM D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers-Tension

ASTM D570 Water Absorption of Plastics

ASTM D792 Density and Specific Gravity of Plastics by Displacement

ASTM D1002 Test Method for Shear Strength of Adhesives by Tension Loading (Metal to Metal)

ASTM D1084 Viscosity of Adhesives

ASTM D2671 Test Methods for Heat-Shrinkable Tubing for Electrical Use

ASTM E28 Softening Point by Ring and Ball Apparatus

(Copies of ASTM Publications may be obtained from the American Society for Testing and Materials,

1916 Race Street, Philadelphia, Pennsylvania 19103.)

TABLE 1

TAPE DIMENSIONS

Description Width – nominal

in (mm) Thickness – nominal

in (mm) Standard Roll Length

ft (m)

S1297-01 1.00 (25) 0.010 (0.25) 10 (3.2)

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Table 2 – Material Properties

PROPERTY Unit S1297 METHOD OF

TEST

PHYSICAL

Visual

Pass

Section 6.1

Water Absorption Percent 0.33 Maximum ASTM D570

Specific Gravity 1.2 Maximum ASTM D792

Tensile Strength psi 250 Minimum ASTM D412

Ultimate Elongation Percent 500 Minimum ASTM D412

Adhesion

XLPE (BSTS) to XLPE (-3)

XLPE (BSTS) to Aluminum

XLPE to Polychloroprene

(-3 to NTFR)

Z-Hal to Z-Hal

(-100 to XFFR)

Pounds/in width

(N/25 mm)

25 (110) Minimum

Section 6.2

Appendix A

Appendix B

Appendix A

Lap Shear (Al/Al) Lb/in2

(kN/25 mm2)

700 (3.0) Minimum Section 6.4

ASTM D1002

Viscosity, Brookfield @ 177C cps 20,000 ± 5000 Section 6.6

ASTM D1084

Softening Point

(Ring and Ball) °C 100 ± 5 ASTM E28

ELECTRICAL

Dielectric Strength

V/mil

(kV/mm)

250 Minimum.

(9.8)

ASTM D 149

Volume Resistivity Ohm-cm 1010 Min ASTM D 257

CHEMICAL

Corrosive Effect Non-Corrosive Section 6.3

ASTM D2671

Procedure B

Fungus Resistance Visual growth 1 or less ASTM G21

Fluid Resistance

4 hours at 23 ± 3°C

JP-8 Fuel (MIL-DTL-83133)

Hydraulic Fluid (MIL-H-5606)

De-icing Fluid (MIL-A-8243)

Lube Oil (MIL-PRF-7808)

Lube Oil (MIL-L-23699)

5% NaCl (A-A-694)

% weight uptake

5 maximum

Section 6.5

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Adhesive Peel fixture

Figure 2. Part Specimen in Tensile Tester – (Rolling Drum Method Illustrated)

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APPENDIX A

PEEL SPECIMEN PREPARATION OF POLYMER TO POLYMER

T-Peel Method

A.l SAMPLE DESCRIPTION

The mandrel specimen shall be as indicated in Table 1. If two heat shrink products are being bonded

together, a core mandrel of metal, PTFE or temperature resistant plastic may act as the hold out

system.

A.2 SPECIMEN PREPARATION

A.2.1 Recover substrate tubing onto a clean 1 inch (25 mm) OD mandrel.

A.2.2 Lightly abrade the substrate material with No. 320 emery paper.

A.2.3 Wipe particles from abrasion off the substrate with a clean dry cloth.

A.2.4 Spiral–wrapped 1 inch (25 mm) tape adhesive on the substrate material with a 50% overlap.

A.2.5 Lay down a break strip of ¾ inch (19 mm) wide masking tape along the longitudinal length of the

specimen.

A.2.6 Preheat a heat gun* (see note) and reflector 30 seconds on the appropriate setting for the product.

A.2.7 Completely recover the outer polyethylene sleeve onto the adhesive, leaving n o chill marks.

A.2.8 Post-heat adhesive assembly using the heat gun for 30 seconds after complete recovery.

A.2.9 Allow 4 hours for cooling prior to performing peel tests.

A.2.10 Cut the specimen into 1 inch (25 mm) long sections. Score both layers of the tubing along the

edge of the tape and remove from the mandrel. Separate the layers at the tape to provide an

opening to insert in to the jaws of the test machine. Perform a T peel-type test.

A.2.11 Calibrate the test equipment and set the jaw separation speed at 2 inches (51 mm) per minute.

A.2.12 Average the results of 5 pulls and record and the T-peel stength value in lbs /inch width.

* Note: Use a Raychem Thermogun or equal with 2000W output minimum.

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APPENDIX B

PEEL SPECIMEN PREPARATION OF POLYMER TO ALUMINUM PIPE

Rolling Drum Method

B.l SAMPLE DESCRIPTION

The mandrel specimen shall be an 18 inch length of 1 inch OD aluminum pipe.

B.2 SPECIMEN PREPARATION

B.2.1 The mandrel shall be prepared to be steel wool, wire brush or sander to expose a smooth, uniform,

unoxidized surface.

B.2.2 Solvent wipe the mandrel surface with Isopropyl Alcohol (IPA) or equivalent.

B.2.3 Wipe clean and dry.

B.2.4 Apply a break point piece of masking tape longitudinally along the pipe , prior to applying the adhesive.

B.2.5 Preheat mandrel until warm (approximately 50° C (122° F)).

B.2.6 Spiral wrap a strip of the 1 inch (25 mm) wide adhesive over the mandrel using a 50% overlap.

B.2.7 Completely recover * (see note) the outer sleeve over the mandrel, leaving no chill marks on the sleeve.

B.2.8 Postheat adhesive assembly 30 seconds after complete recovery.

B.2.9 Allow 4 hours for cooling prior to performing peel tests.

B.2.10 Cut the specimen (pipe and tubing) into 1 inch (25 mm) wide sections. Score the tubing along the

edge of the masking tape to remove from the mandrel and provide an opening area to insert into the

upper jaw of the test machine.

B.2.11 Calibrate the test equipment and set the jaw separation speed at 2 inches (51 mm) per minute.

B.2.12 Average the results of 5 rolling drum-type pulls and record and the peel strength value in lbs /inch width.

* Note: Use a Raychem Thermogun or equal with 2000W output minimum.