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: lesley@stanleyplastics.co.uk

Digitally signed by RichardBarlow

Richard Barlow ~~S~~,~~:~h~~~r~~~~~'

emall=rbano\"J@rapra.net. c=GBDale: 2012.02.20 14:18:002

TomForsyth

Digitally signed by Tom ForsythON. cn=Tom Forsyth,oeSrnithers Rapra, OU,email=lfo(syth@rapra.net. 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