Sponsored by Manufacturing Chemists" Association.
|Statement||ed. by M.R. Kamal.|
|Series||Applied polymer symposia -- 4|
|Contributions||Kamal, Musa R., Manufacturing Chemists" Association.|
|The Physical Object|
|Number of Pages||306|
This chapter focuses on weatherability of vinyl and other plastics. The mechanism of weathering is often caused by the damaging radiation from the sun. One way to rate the outdoor light stability of various polymers is to establish the energy to break its bonds. Outdoor weathering data is presented for a variety of polymers. Weatherability | materials testing New standards, equipment and testing procedures are improving the reliability of accelerated weather testing. Jennifer Markarian reports Understanding how to best protect a plastic part from the effects of weathering needs to include an analysis of several important factors. It should take account ofFile Size: KB. Japan's largest platform for academic e-journals: J-STAGE is a full text database for reviewed academic papers published by Japanese societiesCited by: 1. Color weatherability of white materials in Ohio. Weathering of Plastics less ductile than the PVC, showing lower impact initially, and the ABS structure, particularly the polybutadiene, is weak and susceptible to the damage and oxidation caused by the sun, thus resulting in poor impact by: 6.
Since the previous edition, several new materials have been announced. Many of these materials result from metallocene catalyst technology. In addition, developments also continue with condensation polymers with several new polyester type materials of interest 4/5(4). 1 Material Properties of Plastics Formation and Structure The basic structure of plastics (or polymers) is given by macromolecule chains, formulated from monomer units by chemical reactions. Typical reactions for chain assembling are polyaddition (continuous or step wise) and condensation polymer-ization (polycondensation)  (Figure ). M F Ashby and D R H Jones, Engineering Materials, Vol. 1, , Butterworth Heinemann M F Ashby and D R H Jones, Engineering Materials, Vol. 2, , Butterworth Heinemann M Hansen, Constitution of Binary Alloys, , McGraw Hill I J Polmear, Light Alloys, , Elsevier C J Smithells, Metals Reference Book, 6th Ed., , ButterworthsFile Size: KB. ò Preface ò Basic Parameters in Weathering Studies ò Choices in the Design of Outdoor Weathering Tests ò A Comparison of New and Established Accelerated Weathering Devices in Aging Studies of Polymeric Materials at Elevated Irradiance and Temperature ò Current Status of Light and Weather Fastness StandardsùNew Equipment Technologies, Operating Procedures and Application of Standard Reference Materials ò Weatherability of Vinyl and Other Plastics Book Edition: 1.
Testing of the creep behaviour of samples of plastic. European/ISO Standard: DIN EN ISO , Part 2. The elongation (deformation) of a plastic exposed to a constant force becomes ever greater with time. This phenomenon is known as creep behaviour. Creep behaviour can be determined by performing a three-point bending test on small samples of the. Plastic materials are often used for outdoor applications such as architectural glazing, mass transportation interiors, and marine dock n plastics such as acrylic, Ultem®, PVDF, and PTFE are inherently UV stable. However, most plastic materials exhibit color change and loss of elongation when exposed to UV light. 6Elasticity is a form of materials response that refers to immediate and time-independent deformation upon loading, and complete and instant recovery of the original geometry upon removal of the load. A material is elastic or it is not, one material cannot be “more elastic” than another, and a material can be elastic without obeying the. Weatherability of plastic materials. Symposium held at National Bureau of Standards, Gaithersburg, Maryland, February ,