ASTM D3122-95(2002)
(Specification)Standard Specification for Solvent Cements for Styrene-Rubber (SR) Plastic Pipe and Fittings
Standard Specification for Solvent Cements for Styrene-Rubber (SR) Plastic Pipe and Fittings
ABSTRACT
This specification provides general requirements for styrene-rubber solvent cements used in joining styrene-rubber (SR) plastic pipe and fittings. A recommended procedure for joining styrene-rubber pipe and fittings is given. The materials shall meet the required resin content, dissolution, viscosity, and lap shear strength.
SCOPE
1.1 This specification provides general requirements for styrene-rubber solvent cements to be used in joining styrene-rubber (SR) plastic pipe and fittings.
1.2 A recommended procedure for joining styrene-rubber pipe and fittings is given in the appendix.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 The following safety hazards caveat pertains only to the test methods portion, Section 6, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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An American National Standard
Designation: D 3122 – 95 (Reapproved 2002)
Standard Specification for
Solvent Cements for Styrene-Rubber (SR) Plastic Pipe and
Fittings
This standard is issued under the fixed designation D 3122; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope F 493 Specification for Solvent Cements for Chlorinated
Poly (Vinyl Chloride) (CPVC) Plastic Pipe and Fittings
1.1 This specification provides general requirements for
styrene-rubber solvent cements to be used in joining styrene-
3. Terminolgy
rubber (SR) plastic pipe and fittings.
3.1 Definitions—Definitions are in accordance with Termi-
1.2 A recommended procedure for joining styrene-rubber
nology F 412, and abbreviations are in accordance with Ter-
pipe and fittings is given in the appendix.
minology D 1600, unless otherwise specified.
1.3 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
4. General Requirements
only.
4.1 The solvent cement shall be a solution of styrene-rubber
1.4 The following safety hazards caveat pertains only to the
(SR) plastic compound or resin meeting the following require-
test methods portion, Section 6, of this specification: This
ments.
standard does not purport to address all of the safety concerns,
4.1.1 The SR plastic compounds or resin shall contain at
if any, associated with its use. It is the responsibility of the user
least 50 % styrene plastics, combined with rubbers to a
of this standard to establish appropriate safety and health
minimum rubber content of 5 %, and compounding materials
practices and determine the applicability of regulatory limita-
such as antioxidants and lubricants, and may contain up to
tions prior to use.
15 % acrylonitrile combined in the styrene plastics or rubbers,
orboth.Therubbersshallbeofthepolybutadieneorbutadiene-
2. Referenced Documents
styrene type, or both, with a maximum styrene content of 25 %
2.1 ASTM Standards:
2 or nitrile type or both. The combined styrene plastics and
D 618 Practice for Conditioning Plastics for Testing
3 rubber content shall be not less than 90 %. No filler may be
D 1084 Test Methods for Viscosity of Adhesives
used. (See Specification D 2852.)
D 1600 Terminology for theAbbreviated Terms Relating to
2 4.2 Either virgin or clean rework material may be used
Plastics
provided that the rework material is generated from the solvent
D 2852 Specification for Styrene-Rubber (SR) Plastic Drain
4 cement manufacturer’s own production, is compatible with
Pipe and Fittings
virgin material, and will produce a cement that meets the
F 402 Practice for Safe Handling of Solvent Cements,
requirements of this specification.
Primers,andCleanersUsedforJoiningThermoplasticPipe
4 4.3 The cement shall be free-flowing and shall not contain
and Fittings
4 lumps, macroscopic undissolved particles, or any foreign
F 412 Terminology Relating to Plastic Piping Systems
matter that will adversely affect the ultimate joint strength or
chemical resistance of the cement.
1 4.4 The cement shall show no gelatin. It shall show no
This specification is under the jurisdiction ofASTM Committee F17 on Plastic
stratification or separation that cannot be removed by stirring.
Piping Systems and is the direct responsibility of Subcommittee F17.20 on Joining.
Current edition approved Sept. 10, 1995. Published November 1995. Originally
4.5 The cement shall be a solution of styrene-rubber (SR)
published as D 3122 – 72. Last previous edition D 3122 – 95.
plastic compound or resin meeting the requirements of 4.1.1
Annual Book of ASTM Standards, Vol 08.01.
dissolved in one of the following solvents:
Annual Book of ASTM Standards, Vol 15.06.
Annual Book of ASTM Standards, Vol 08.04. 4.5.1 Methyl ethyl ketone.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 3122 – 95 (2002)
4.5.2 Toluene. 6.3 Total Solids:
6.3.1 Apparatus:
NOTE 1—It is recommended that solvent cements made to this speci-
6.3.1.1 Ointment Tins—Style No. 12, 30 mL (1 oz) all
fication not be orange since that color is being recommended for use with
CPVC solvent cement under Specification F 493. metal.
6.3.1.2 Vacuum Oven.
5. Detail Requirements
6.3.1.3 Desiccator.
5.1 Resin Content—The SR resin compound shall be 20 %
6.3.1.4 Analytical Balance.
minimum by mass with methyl ethyl ketone as the solvent or
6.3.2 Procedure—Stir the sample thoroughly with a spatula
shall be 15 % minimum by mass with toluene as the solvent,
before weighing (Note 4). Weigh 3.0 6 0.5 g of the sample to
when tested in accordance with 6.3.
the nearest 1 mg into a tared ointment tin. Place tin into the
5.2 Dissolution—The cement shall be capable of dissolving
vacuum oven (Note 5) and heat at 120°C for 45 min (Note 6).
an additional 10 % by mass of styrene-rubber (SR) resin or
Vacuum must be continually in operation to draw off flam-
compoundmeetingtherequirementsof4.1.1at23 62°C(73.4
mable solvents and should be maintained at 15 mm Hg
6 3.6°F) without evidence of gelation.
maximum. Remove the tin from the oven and cap immediately.
5.3 Viscosity—The minimum viscosity at 23 6 2°C (73.4 6
Place in a desiccator until cooled to room temperature. Weigh
3.6°F) shall be 90 mPa·s (90 cP) when tested in accordance
the tin and dried sample to the nearest 1 mg.
with 6.2.
NOTE 4—This material is usually nonhomogeneous and shall be thor-
NOTE 2—Cements approaching the minimum viscosity of this specifi-
oughly stirred before weighing. The weighing shall also be accomplished
cation generally are not recommended for noninterference-type fit (where
quickly to avoid loss of solvent by volatilization.
gap exists between the pipe and fitting socket).
NOTE 5—The use of a vacuum oven is mandatory for drying the
5.4 Lap Shear Strength:
specimen because this oven has no exposed heating surface nor an open
5.4.1 The minimum lap shear strength of a cement made
flame, thus avoiding the danger of flashing. The oven also provides an
with methyl ethyl ketone as the solvent when tested in
open vacuum to exhaust solvent fumes.
accordance with 6.4 shall be 3.5 MPa (500 psi) after a 16-h
NOTE 6—The specimen shall be left in the oven for 45 min and no
curing time and 6.0 MPa (900 psi) after a 48-h curing time. longer. Specimens left in for1hor more show a definite increase in
weight.
5.4.2 The minimum lap shear strength of a cement made
with toluene as the solvent when tested in accordance with 6.4
6.3.3 Calculation—Calculate the percentage total solids,
shallbe1.6MPa(230psi)aftera16-hcuringtimeand2.4MPa
TS, as follows:
(350 psi) after a 48-h curing time.
TS,% 5 ~~B 2 A!/~C 2 A!!3 100
NOTE 3—These values should not be used for designing pipe joints.
where:
6. Test Methods
A = weight of ointment tin,
B = weight of tin and specimen after drying, and
6.1 The properties enumerated in this specification shall be
C = weight of tin and specimen before drying.
determined in accordance with the following methods:
6.3.4 Precision—Duplicate samples shall be tested for best
6.1.1 Conditioning—Condition the test specimens at 23 6
results. Duplicate results obtained by the same analyst, on the
2°C (73.4 6 3.6°F) for not less than 40 h prior to test in
same material, on the same day, in the same laboratory are
accordance with ProcedureAof Practice D 618, for those tests
suspect if they differ by more than 0.52 % absolute. This
where conditioning is required.
procedure has a standard deviation of 0.13.
6.1.2 Test Conditions—Conduct tests at 23 6 2°C (73.4 6
3.6°F), unless otherwise specified in the test methods or in this 6.4 Lap Shear Strength:
specification.
6.4.1 Number of Specimens—Aminimum of five specimens
6.2 Viscosity:
shall be tested for the requirement specified in 5.4.
6.2.1 The samples for test shall be representative of the
6.4.2 Cut 25 by 25-mm (1 by 1-in.) and 25 by 50-mm (1 by
material under consideration. One sample for every batch shall 1
2-in.) sections from a 6-mm ( ⁄4-in.) thick rigid styrene-rubber
be tested in accordance with 6.2.2 unless otherwise agreed
plastic (SR) sheet. One section of each size is required for each
upon by the supplier and the purchaser.
test specimen (Fig. 1).
6.2.2 MeasuretheviscosityinaccordancewithMethodBof
6.4.3 Clean the surfaces to be adhered with a cloth damp-
Test Methods D 1084, except that conditioning to temperature
ened with the solvent (see 4.5) used to make the solvent
equilibrium only is required. Use a Model RVF viscometer, a
cement.
speed of 10 r/min, and the spindle that, by trial, gives the
6.4.4 Using a 25-mm (1-in.) natural bristle brush, apply two
closest reading to center range of scale for t
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