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SMITHERS
Confidential Technical Report54021
Date: zo" February 2012
PROPOSAL NO:PROJECT NO:
113652HGAU0053
TESTING OF ACRYLIC SAMPLE
STANLEY PLASTICS,Holmbush,Midhurst,GU299HX.
For the attention of: Lesley Goade-mail: [email protected]
Digitally signed by RichardBarlow
Richard Barlow ~~S~~,~~:~h~~~r~~~~~'
emall=rbano\"[email protected]. c=GBDale: 2012.02.20 14:18:002
TomForsyth
Digitally signed by Tom ForsythON. cn=Tom Forsyth,oeSrnithers Rapra, OU,email=lfo([email protected]. c=GBDale: 2012022014-13:31 Z
Richard BarlowLaboratory CoordinatorAuthor
Tom ForsythBusiness ManagerChemical Analysis
Page 1 of 4 pages - eTR 54021
TESTING OF ACRYLIC SAMPLE
1. INTRODUCTION
1.1 Sample designation and description:
A single sample, comprising a series of various acrylic castings and one bag of swarf, was
received on the 26th January 2012; it was assigned a unique Smithers Rapra internal sample code
and identified as follows:
SR5699 - Acrylic lot #s '13435, 12461, 12563, 13441, 13677, 13472'
1.2 Tests requested:
Testing to Table 2-3.4-2 of ASME PVHO-1-2007.
2 EXPERIMENTAL DETAILS
All testing was performed at Smithers Rapra Shawbury.
The samples were tested in accordance with the following standards, except as otherwise noted:
2.1 Tensile Properties
The tensile properties were determined in general accordance with ASTM D638-08 using a
universal screw type tensile testing machine. Two type 1 dumbbells were tested at a speed of 5
mm/minute. Elongation was measured using a clip-on type extensometer fitted with a displacement
transducer. Data was recorded autographically. Samples were conditioned for a minimum of 96
hours at 23±2°C and 50±1 0% relative humidity prior to testinq.
2.2 Compressive Properties
The tensile properties were determined in general accordance with ASTM D695-08a using auniversal screw type tensile testing machine. Two rectangular blocks of nominal dimensions 2 inch
x 0.5 inch were tested at a speed of 1.3 mm/minute. Displacement was recorded using a
displacement transducer. Data was recorded autographically. Samples were conditioned for a
minimum of 96 hours at 23±2°C and 50±1 0% relative humidity prior to testing.
Page 2 of 4 pages - CTR 54021
2.3 Compressive Deformation
Compressive Deformation was determined in accordance with PVHO-1 method 2-3.7(c) using a
universal screw type tensile testing machine fitted with an environmental chamber. Two block
samples, nominally measuring 0.5 inch cube, were tested at !50°Cfor 24 hours. Displacement was
measured using a displacement transducer. Data was recorded autographically. Samples were
conditioned for a minimum of 96 hours at 23±2°C and 50±10% relative humidity prior to testing
2.4 Visual Clarity
Visual Clarity was determined in accordance with PVHO-1-2007 2-3.7(e). Clear print of size 7 lines
per column inch and 16 characters per linear inch was viewed from a distance of 20 inches through
the thickness of the casting with the opposite faces polished. The tab end of a type 1 dumbbell
sample was used for the determination. Samples were conditioned for a minimum of 96 hours at
23±2°C and 50±10% relative humidity prior to testing.
2.5 Ultraviolet Transmittance
Ultraviolet Transmittance was performed in general accordance with PVHO-1 method 2-3.7(d)
using a Thermo Fisher Scientific Evolution 600 UVNIS Spectrometer. The sample tested was a
rectangular block of nominal dimensions 2 inch x 0.5 inch x 0.5 inch. Measurement was made
between 290nm and 330nm.
2.6 Residual Monomer
Residual Monomer Content was determined by Gas Chromatography with Flame ionisation
Detection (GC-FID) using standard methodology for MMA determination in PMMA. Testing was
performed using Smithers Rapra procedure SOP-RT011.35.02. I
Page 3 of 4 pages- CTR 54021
4. RESULTS
SR5699
Property Results Mean Specified Values
Tensile Strength, MPa 73.8,784 76.1 <': 62 MPa
Elongation At Break, % 3.7,6.9 5.3 ~2 %
Tensile Modulus, MPa 3316,3415 3366 ~ 2760 MPa
Compressive Yield Strength, MPa 109.8,112.1 111.0 ~103MPa
Compressive Modulus, MPa 2746,2887 21:.17 ~ 2760 MPa
Compressive Deformation, % 0.20,0.16 0.18 ~ 1.0 %
Ultraviolet Transmittance, % 0.30% @ 330nm ~5 %
Monomer Content0.62 , 0.61 0.61 ,,; 1.6 %
Methyl Methacrylate, %
Visual Clarity Clear and readable Clear and readable
Dates of test: s" February to 15th February 2012.
5. LIMITATIONS
This report has been prepared solely based on information supplied up to the point of its
completion and has been accepted in good faith.
The results relate only to the samples tested and to the particular tests carried out. No.--,responsibility can be taken for the supplied samples being unrepresentative.
Smithers Rapra Technology is an ISO/IEC 17025 laboratory. However, unless a test is specifically
stated to be included within the scope of our accreditation to ISO/lEG 17025, it should be assumed
not to be so. Note that any opinions or interpretations given are outside the scope of our UKAS
accreditation.
_______________ End of Report __ . ---t _
Page 4 of 4 pages - CTR 54021