Citation
(2009), "Training", Pigment & Resin Technology, Vol. 38 No. 5. https://doi.org/10.1108/prt.2009.12938eac.002
Publisher
:Emerald Group Publishing Limited
Copyright © 2009, Emerald Group Publishing Limited
Training
Article Type: Conferences, training and publications From: Pigment & Resin Technology, Volume 38, Issue 5
Understanding and testing the wet and dry properties of coatings
Description
All coatings undergo phase changes during their life history. For a majority they are liquid during manufacture, storage and application. Following conversion to a dry film they acquire important, albeit slowly changing, solid-state properties which enable their protective and decorative functions. The course will have a strong practical emphasis enabling delegates to:
Understand the principles and consequences of key coating attributes including:
- •
wet film;
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viscosity and Rheology;
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surface tension;
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dry film;
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mechanical properties;
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adhesion;
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permeability;
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opacity; and
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gloss and sheen.
Quantify test precision in terms of repeatability and reproducibility. Understand the concept of “Test Capability” in relation to control limits and specification. Identify test methods and protocols from National, European and International sources. Be aware of the correlation and limitations between test results and practical performance. Carry out practical application and testing of paints using established test methods. Subject to prior notice every attempt will be made to meet delegates specific interests. Note: The measurement and control of colour is dealt with as a separate course and is not covered here. See colour measurement and colour control and advanced colour measurement and colour control.
Who should attend
This course is designed for all those working on the development, specification, and quality control of coatings where the use and interpretation of test methods is required. The course is aimed towards all those requiring a thorough grounding in paint and surface coatings testing and will be particularly useful to technical personnel from raw material suppliers, paint manufacturers and end-users. No specific qualifications are required but a gain maximum benefit a basic knowledge of science would be useful.
Contents
- 1.
Introduction to test methodology:
- 2.
- •
principles of testing and correlation;
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quality control and specification;
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accuracy and precision; and
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repeatability and reproducibility.
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- 3.
Properties of liquid coatings
- 4.
Rheology:
- 5.
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definitions and units;
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types of rheological behaviour;
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shear thinning, thixotropy, extensional flow, etc.;
- •
factors influencing viscosity;
- •
measurement techniques;
- •
overview of instruments; and
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practical work.
- •
- 6.
Surface tension and flow:
- 7.
- •
wetting and contact angles;
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surface and interfacial tension;
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dynamic surface tension;
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surface tension gradients;
- •
control of spreading and flow;
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film defects;
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Bénard cells, craters, floating, flooding, orange peel, etc.;
- •
measurement of surface tension;
- •
characterisation tests; and
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practical work.
- •
- 8.
Properties of dry films
- 9.
- •
mechanical properties;
- •
modulus of elasticity;
- •
tensile strength;
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extensibility;
- •
impact strength and abrasion resistance;
- •
scratch resistance;
- •
adhesion and adhesive performance;
- •
destructive and non-destructive test methods;
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resistance testing;
- •
durability and accelerated weathering;
- •
corrosion resistance testing;
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water permeability;
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appearance tests;
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gloss and sheen;
- •
opacity; and
- •
contrast rations, scatter coefficients and tint methods.
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Standards
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Purpose of standards.
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Sources of standards.
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National Standards, e.g. BSI.
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European Standards EN.
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International Standards ISO.
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Standard tests available at: PRA.
Practical work
Time will be set aside through out the day to enable delegates to carry out supporting practical work.
Tutors
Mrs Tessa Winter – Head of Testing Services, PRA.
Mr Peter Collins – Technical Director, PRA.
Mr Jon Graystone – Principal Research Scientist, PRA.
Mr Anthony Buxton – PRA Consultant.
Venue
PRA, Hampton, Middlesex, UK.
Dates and prices
24-25 November 2009
£698 – PRA Member. £818 – standard price.
The workshop starts at 09.30 and finishes at 17.00 on the first day. On the second the workshop starts at 09.00 and ends at 16.00. Prices are per delegate and include VAT, all course materials, tea, coffee and a light lunch. Prices do not include accommodation.
Registration
To book your place use our online registration form.
More information
For further details go to: www.pra-world.com/about_pra/contact_pra/training
Paint technology
Description
This intensive four-day course seeks to provide a firm foundation in the technology of organic surface coatings. The course contains an overview of the raw materials used in surface coatings and their contribution to the final properties of the coatings. The study of the coatings systems emphasises the changes taking place in modern technology.
Requirements
To gain maximum benefit from this course it is helpful if students have a knowledge of chemistry to university entrance standard.
Contents
- 1.
Introduction to paint and surface coatings technology.
- 2.
Markets for coatings.
- 3.
Substrates:
- 4.
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wood;
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masonry;
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metal; and
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plastic.
- •
- 5.
Properties of coatings:
- 6.
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optical properties;
- •
mechanical properties; and
- •
Rheology.
- •
- 7.
Raw materials:
- 8.
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organic film formers;
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pigments, pigmentation and the dispersion process; and
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solvents and solubility and the film formation process.
- •
- •
Waterborne and high solids coatings:
- •
- •
specific raw materials;
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types and example formulations; and
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uses.
- •
- •
Solvent-borne coatings:
- •
- •
specific raw materials;
- •
types and example formulations; and
- •
uses.
- •
- 9.
Radiation cured coatings.
- 10.
Coatings application methods:
- 11.
- •
brush;
- •
roller;
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spray (air, airless, HVLP, etc.);
- •
dip, flow, curtain, roller; and
- •
electrostatic discs and bells.
- •
- 12.
Surface preparation:
- 13.
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cleaning; and
- •
pre-treatment.
- •
- 14.
Powder coatings:
- 15.
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types;
- •
uses; and
- •
application methods.
- •
- 16.
Microbiology of coatings:
- 17.
- •
plant hygiene;
- •
aqueous paints;
- •
applied films;
- •
preservation and protection; and
- •
microbial testing.
- •
Tutors
- •
This course is taught by a team comprising members of PRA’s research and technical departments and external consultants from the coatings industry.
Venue
- •
PRA, Hampton, Middlesex, UK.
Dates and prices
19-22 October 2009
£1,199 – PRA Member. £1,399 – standard price.
30 November-3 December 2009
£1,199 – PRA Member. £1,399 – standard price.
The course times are as follows:
First day
09.30-17.00
Second day
09.00-17.15
Third day
09.00-17.15
Fourth day
09.30-15.45
Prices are per delegate and include VAT, all course materials, tea, coffee and a light lunch. Prices do not include accommodation.
Registration
To book your place use our online registration form.
More information
For further details go to: www.pra-world.com/about_pra/contact_pra/training