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Filler reinforcements in rubber
vol.
18, No. 11, Page 3
F'ILLERREINE;DRCEMlWISThis article provides a general introduction to the use of partiIN RUBBER
culate fillers in the reinforcement of rubbers, with particular emphasis on the common factors which affect the levels of reinforcement used. Mechanisms of reinforcement, some of which are not clearly discernible, and the role of hysteresis in reinforcement are not covered. These, and other topics on reinforcement, are treated in the references provided. Elastomerics,
1988,
120, (Aug.), 27
CHEMICAL IRTBRACTIONS Fluorocarbon elastomers are established additives for increasing BFPWEEW FOLYOLEFIN PROCESSING AIDS AND OTHER ADDITIVES
the processability of and eliminating melt fracture in polyolefines. A study has been carried out by the 3M Co. to determine the likelihood of chemical reaction between these processing aids and other typical polyolefin additive systems under the limiting condition of undiluted contact at high processing temperatures. General indications of chemical reactivity were assessed and the elastomer/additive combinations were evaluated in the polymer melt using capillary rheometry. Plast. Eng., 1988, XLIV, (July), 43-46
EFFBCT OF LOADING RATE ON TENSILE STRRNGTB OF FIBROUS COMPOSITES
An analytical framework of the tensile strength versus strainrate behaviour has been provided considering the mechanics of crack propagation. Experimental data obtained from fibre-reinforced composites have been compared with the results of analysis This work was to test the validity of the proposed analysis. carried out by Yoon Technology in the U.S. in association with the Materials Laboratory of General Electric. Composites,
F'IRERETARDANT ALKYD RESINS BASED ON CHLORINATED CYCLIC MONO-ACBTAL
AND CHLORINDIC ANIWDRIDE
1988, 2,
(July), 295-299
The National Research Centre in Cairo and the Faculty of Engineering at Zagazic University, have prepared fire retardant alkyd resins modified with dehydrated castor oil directly without going through the alcoholysis step. The method is based upon dehydrating castor oil with trimellitic anhydride. The oil thus produced contains sufficient combined carboxyl groups capable of polyesterifications with triols and glycerol or chlorinated monocyclic acetal and glycerol, and the macro-structure is completed by further reaction with PA or chlorendic anhydride to obtain flame retardant resins. Melamine formaldehyde resin has been used in combination -with the previous alkyd resins to improve hardness and also fire retardancy. Pig. & Resin Tech., 1988, 2,
ADDITIVES FOR POLYMERS
o1988
(Aug.), 4
Elaevier Science Publishers Ltd.. Englmd./E16/20.00 + 2.20 No part of this publication may be reproduced. stored in a retrieval system, or transmitted by anv form or by an! means, electronic. mechanical. photocopying. recording or otherwise. without the prior permission of the publishers. (Readers in the U.S.A. - please see special regulations listed on back cover.]
18, No. 11, Page 3
F'ILLERREINE;DRCEMlWISThis article provides a general introduction to the use of partiIN RUBBER
culate fillers in the reinforcement of rubbers, with particular emphasis on the common factors which affect the levels of reinforcement used. Mechanisms of reinforcement, some of which are not clearly discernible, and the role of hysteresis in reinforcement are not covered. These, and other topics on reinforcement, are treated in the references provided. Elastomerics,
1988,
120, (Aug.), 27
CHEMICAL IRTBRACTIONS Fluorocarbon elastomers are established additives for increasing BFPWEEW FOLYOLEFIN PROCESSING AIDS AND OTHER ADDITIVES
the processability of and eliminating melt fracture in polyolefines. A study has been carried out by the 3M Co. to determine the likelihood of chemical reaction between these processing aids and other typical polyolefin additive systems under the limiting condition of undiluted contact at high processing temperatures. General indications of chemical reactivity were assessed and the elastomer/additive combinations were evaluated in the polymer melt using capillary rheometry. Plast. Eng., 1988, XLIV, (July), 43-46
EFFBCT OF LOADING RATE ON TENSILE STRRNGTB OF FIBROUS COMPOSITES
An analytical framework of the tensile strength versus strainrate behaviour has been provided considering the mechanics of crack propagation. Experimental data obtained from fibre-reinforced composites have been compared with the results of analysis This work was to test the validity of the proposed analysis. carried out by Yoon Technology in the U.S. in association with the Materials Laboratory of General Electric. Composites,
F'IRERETARDANT ALKYD RESINS BASED ON CHLORINATED CYCLIC MONO-ACBTAL
AND CHLORINDIC ANIWDRIDE
1988, 2,
(July), 295-299
The National Research Centre in Cairo and the Faculty of Engineering at Zagazic University, have prepared fire retardant alkyd resins modified with dehydrated castor oil directly without going through the alcoholysis step. The method is based upon dehydrating castor oil with trimellitic anhydride. The oil thus produced contains sufficient combined carboxyl groups capable of polyesterifications with triols and glycerol or chlorinated monocyclic acetal and glycerol, and the macro-structure is completed by further reaction with PA or chlorendic anhydride to obtain flame retardant resins. Melamine formaldehyde resin has been used in combination -with the previous alkyd resins to improve hardness and also fire retardancy. Pig. & Resin Tech., 1988, 2,
ADDITIVES FOR POLYMERS
o1988
(Aug.), 4
Elaevier Science Publishers Ltd.. Englmd./E16/20.00 + 2.20 No part of this publication may be reproduced. stored in a retrieval system, or transmitted by anv form or by an! means, electronic. mechanical. photocopying. recording or otherwise. without the prior permission of the publishers. (Readers in the U.S.A. - please see special regulations listed on back cover.]