PRELIMINARY DATE: 19, 20, 21 AND 22 NOVEMBER 2018
An intensive 4-day seminar for engineers in the rubber industry,
Suppliers and users
- young chemists and mechanical engineers with limited polymer background
- higher technical education graduates with work experience in the rubber industry
- designers/constructors in companies that utilize rubber components or parts
- Production problems are resolved all too often by trial and error. Is a better knowledge or understanding of the rubbers and available processes of help?
- Every user employs own specifications. How can we best translate these into useful material specifications?
- Mixing is crucial for the production of good rubber compounds. Is the one mixing technique better than the other?
- Which method of vulcanisation is most suitable for our product? Or should we employ thermoplastic rubbers?
- How can environmental issues be prevented in the rubber industry?
This seminar is part of a more comprehensive set of courses offered for general practice and operations in the rubber industry:
- Introduction to rubber technology (2 days)
- Rubber in sealings (1 day)
- Practical rubber workshop
offered by Elastomer Research & Testing B.V.
P.O. Box 2147
7420 ACV Deventer
Rubber technology is an intensive seminar. We ask the course members to bring a laptop because the syllabus will be provided via USB flash-drive. It is partly based on the book “Basic Elastomer Technology” (Rubber Division, American Chemical Society). A tour of the Apollo Vredestein tyre assembly factory is included in the programme. Case studies are used to discuss the application in the company environment. There are plenty of opportunities provided for discussion of theoretical and practical aspects with the lecturers. Also after the seminar the participants can obtain advice from the University of Twente.
Types of polymers, thermoplastics, thermosets, rubbers/elastomers, rubbers versus plastics, modulus versus temperature and time, glass transition, rubber elasticity, reinforced and non-reinforced rubbers.
- Carbon black: sorts, properties and effect on rubber.
- Non-black fillers: types, properties and effects on rubber, influence on the polymer networking processes.
GENERAL PURPOSE RUBBERS
- Properties of general purpose rubbers (NR, SBR, BR, IIR).
- Rubbers for car tyres.
Oil resistant and heat resistant rubbers (NBR, CR, ACM, CO, ECO, FKM, Q, FVQ).
- TPE's made from block copolymers, structure and properties.
- TPE's made from blends, particularly on the basis of EPDM and PP.
Introduction to the mechanics of vulcanisation, sulphur, peroxides, types of crosslinks, crosslinking reactions, cross link density, additives, zinc oxide, vulcametry.
Comparison of sulphur and peroxide vulcanisation, difference in rubber properties, choice of system.
Basic principles, bonding to plastics and steel cord.
Appearance of raw materials, mixing rate and mixing quality, distributive and dispersive mixing, degree of dispersion, mastication, mixer types including mills and internal mixers, the mixing process in the internal mixer, energy balance, organisation of a mixing shop.
Properties of rubbers
Material properties of vulcanised rubbers, standards, measurement methods.
Properties and applications
Rubber products, case studies, examples.
Ancillary processing methods
The production process as a flow problem, drag flow , pressure flow, extrusion for rubber processing, extrusion lines, extruder characteristics, energy balance, calenders, the calendering process, control of the thickness of the calender coating, calender coating lines.
Continuous vulcanisation methods for
car profiles, radiator hoses, roofing foil, etc.
Batch-wise production processes
Presses, transfer moulding presses, injection moulding, types and lay-out of injection moulding machines, injection.
Injection moulding technology for rubber
Various vulcanisation techniques, injection principles, dosage and injection, cold channel technology, de-gassing of cavities, mould-fouling.
- Possibilities for re-work and recycling of rubber products, in particular tyres.
- Developments in the market.
The seminar will be held in the English language.