ASTM D3122-95(2009)
(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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Designation:D3122 −95(Reapproved 2009)
Standard Specification for
Solvent Cements for Styrene-Rubber (SR) Plastic Pipe and
Fittings
This standard is issued under the fixed designation D3122; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 3. Terminology
1.1 This specification provides general requirements for
3.1 Definitions—Definitions are in accordance with Termi-
styrene-rubber solvent cements to be used in joining styrene-
nology F412, and abbreviations are in accordance with Termi-
rubber (SR) plastic pipe and fittings.
nology D1600, unless otherwise specified.
1.2 A recommended procedure for joining styrene-rubber
4. General Requirements
pipe and fittings is given in the appendix.
4.1 The solvent cement shall be a solution of styrene-rubber
1.3 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information (SR) plastic compound or resin meeting the following require-
ments.
only.
4.1.1 The SR plastic compounds or resin shall contain at
1.4 The following safety hazards caveat pertains only to the
least 50 % styrene plastics, combined with rubbers to a
test methods portion, Section 6, of this specification: This
minimum rubber content of 5 %, and compounding materials
standard does not purport to address all of the safety concerns,
such as antioxidants and lubricants, and may contain up to
if any, associated with its use. It is the responsibility of the user
15 % acrylonitrile combined in the styrene plastics or rubbers,
of this standard to establish appropriate safety and health
orboth.Therubbersshallbeofthepolybutadieneorbutadiene-
practices and determine the applicability of regulatory limita-
styrene type, or both, with a maximum styrene content of 25 %
tions prior to use.
or nitrile type or both. The combined styrene plastics and
2. Referenced Documents rubber content shall be not less than 90 %. No filler may be
2 used. (See Specification D2852.)
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
4.2 Either virgin or clean rework material may be used
D1084 Test Methods for Viscosity of Adhesives
provided that the rework material is generated from the solvent
D1600 Terminology forAbbreviatedTerms Relating to Plas-
cement manufacturer’s own production, is compatible with
tics
virgin material, and will produce a cement that meets the
D2852 Specification for Styrene-Rubber (SR) Plastic Drain
requirements of this specification.
Pipe and Fittings
4.3 The cement shall be free-flowing and shall not contain
F402 Practice for Safe Handling of Solvent Cements,
lumps, macroscopic undissolved particles, or any foreign
Primers, and Cleaners Used for Joining Thermoplastic
matter that will adversely affect the ultimate joint strength or
Pipe and Fittings
chemical resistance of the cement.
F412 Terminology Relating to Plastic Piping Systems
F493 Specification for Solvent Cements for Chlorinated
4.4 The cement shall show no gelatin. It shall show no
Poly(Vinyl Chloride) (CPVC) Plastic Pipe and Fittings
stratification or separation that cannot be removed by stirring.
4.5 The cement shall be a solution of styrene-rubber (SR)
plastic compound or resin meeting the requirements of 4.1.1
This specification is under the jurisdiction ofASTM Committee F17 on Plastic
Piping Systems and is the direct responsibility of Subcommittee F17.20 on Joining. dissolved in one of the following solvents:
Current edition approved May 1, 2009. Published September 2009. Originally
4.5.1 Methyl ethyl ketone.
approved in 1972. Last previous edition approved in 2002 as D3122 – 95 (2002).
4.5.2 Toluene.
DOI: 10.1520/D3122-95R09.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 1—It is recommended that solvent cements made to this speci-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on fication not be orange since that color is being recommended for use with
the ASTM website. CPVC solvent cement under Specification F493.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3122−95 (2009)
5. Detail Requirements 6.3.1.2 Vacuum Oven.
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.
Place in a desiccator until cooled to room temperature. Weigh
5.3 Viscosity—The minimum viscosity at 23 6 2°C (73.4 6
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
thoroughly stirred before weighing. The weighing shall also be accom-
NOTE 2—Cements approaching the minimum viscosity of this specifi-
plished quickly to avoid loss of solvent by volatilization.
cation generally are not recommended for noninterference-type fit (where
NOTE 5—The use of a vacuum oven is mandatory for drying the
gap exists between the pipe and fitting socket).
specimen because this oven has no exposed heating surface nor an open
5.4 Lap Shear Strength:
flame, thus avoiding the danger of flashing. The oven also provides an
5.4.1 The minimum lap shear strength of a cement made open vacuum to exhaust solvent fumes.
NOTE 6—The specimen shall be left in the oven for 45 min and no
with methyl ethyl ketone as the solvent when tested in
longer. Specimens left in for1hor more show a definite increase in
accordance with 6.4 shall be 3.5 MPa (500 psi) after a 16-h
weight.
curing time and 6.0 MPa (900 psi) after a 48-h curing time.
6.3.3 Calculation—Calculate the percentage total solids,
5.4.2 The minimum lap shear strength of a cement made
TS, as follows:
with toluene as the solvent when tested in accordance with 6.4
shallbe1.6MPa(230psi)aftera16-hcuringtimeand2.4MPa TS,% 5 B 2 A / C 2 A 3100
~~ ! ~ !!
(350 psi) after a 48-h curing time.
where:
NOTE 3—These values should not be used for designing pipe joints.
A = weight of ointment tin,
B = weight of tin and specimen after drying, and
6. Test Methods
C = weight of tin and specimen before drying.
6.1 The properties enumerated in this specification shall be
6.3.4 Precision—Duplicate samples shall be tested for best
determined in accordance with the following methods:
results. Duplicate results obtained by the same analyst, on the
6.1.1 Conditioning—Condition the test specimens at 23 6
same material, on the same day, in the same laboratory are
2°C (73.4 6 3.6°F) for not less than 40 h prior to test in
suspect if they differ by more than 0.52 % absolute. This
accordance with Procedure A of Practice D618, for those tests
procedure has a standard deviation of 0.13.
where conditioning is required.
6.4 Lap Shear Strength:
6.1.2 Test Conditions—Conduct tests at 23 6 2°C (73.4 6
6.4.1 Number of Specimens—Aminimum of five specimens
3.6°F), unless otherwise specified in the test methods or in this
shall be tested for the requirement specified in 5.4.
specification.
6.4.2 Cut 25 by 25-mm (1 by 1-in.) and 25 by 50-mm (1 by
6.2 Viscosity:
2-in.) sections from a 6-mm ( ⁄4-in.) thick rigid styrene-rubber
6.2.1 The samples for test shall be representative of the
plastic (SR) sheet. One section of each size is required for each
material under consideration. One sample for every batch shall
test specimen (Fig. 1).
be tested in accordance with 6.2.2 unless otherwise agreed
6.4.3 Clean the surfaces to be adhered with a cloth damp-
upon by the supplier and the purchaser.
ened with the solvent (see 4.5) used to make the solvent
6.2.2 MeasuretheviscosityinaccordancewithMethodBof
cement.
Test Methods D1084, except that conditioning to temperature
equilibrium only is required. Use a Model RVF viscometer, a
speed of 10 r/min, and the spindle that, by trial, gives the
closest reading to center range of scale for the cement being
tested.
6.3 Total Solids:
6.3.1 Apparatus:
6.3.1.1 Ointment Tins—StyleNo.12,30mL(1oz)allmetal.
The sole source of s
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