VOW. 19, No. 3, Page 2

TECHNICAL NOTES

FIBRE ~INFORC~ The phenolics can be upgraded to "engineering" resins by the addi-

OF P~OLICS tion of high-perform~ce fibres such as carbon, aramid, silica, and glass. The effects of these reinforcements and the resulting advanced-technology moulding compounds are discussed in this ar- ticle. The properties of phenolic composites are determined by the fibre reinforcement type and content. Class fibres impart excellent overall properties. Carbon fibres produce a higher modulus at a lower specific gravity than glass fibres. Carbon- fibre epoxidized-phenolics exhibit even higher modulus and im- proved properties that c.ompare favourably with many metals, and aramid-fibre phenolics offer high impact and modulus at a low specific gravity.

Plast. Eng., 1988, XLIV, (Nov.), 39-41

~F~~V~~S OF The effectiveness of various polymeric and non polymeric hind- HALS IN HDPE ered amine light stabilizers was determined by exposing samples

of HDPE containing these additives to UV light and measuring the resultant oxygen uptake characteristics. Results indicated that the higher molecular weight HALS are less effective as photo- stabilizers than the non polymeric compounds, which is partly attributable to their decreased mobility in the polymer matrix. The use of a UV absorber in combination with HALS was found to increase the effectiveness.

J. Poly. Sci., Part A, 1988, 27, 63-73

EFFECT OF ~-CAROTENE This paper describes the efficiency of &Carotene as a chain ASAH ANTIO~DfWI' IN fU.lS

DSC !3TUDIlXS ON FIBRE-FILLElD CLUE

ADDWIVES FOR POLYMERS

breaking antioxidant, as well as other aspects of ABS stability and degradation, including the influence of the ageing tempera- ture on the rate of oxidation, and the effect of the butadiene content in the ABS on the rate of oxidative degradation,

J. Poly. Sci., Part A, 1988, 3, 343-355

In this study, (carried out at the Research Institute for Poly- mers and Textiles in Japan and at the Chalmers University of Tech- nology in Sweden) the phase transition behaviour of LDPE filled with carbon, silica glass, brass and aluminium, was investigated by differential scanning calorimetry with the intention of exam- ining the effect of fibre on the crystallization mechanism of fibre-filled systems. Results suggested that the fibre accelera-

Cont./......

CQ 1989 ElsevierSeience Publishers Ltd., England./EB/SO.BB + 2.20 No part of this publication may bee reproduced, stored in a retrieval system, or transmitted by any form or by any means, electronic, mechanical, photocopying, reccording or otherwise, without the prior permission of the publishers (Readers in the USA- please see special regulations fisted on back cover.)