the effect of waxes on rubber vulcanisates by brazil

the effect of waxes on rubber vulcanisates

The Effect of Waxes on Rubber Vulcanisates

temperature, at which the mobility and solubility of wax in rubber compounds are balanced so that suf Þ cient bloom can form at the surface of the vulcanised rubber compound in order to provide optimum protection. A comparison of the two waxes is given(2) in Table 1. ParafÞ n waxes have straight chain conÞ gurations with a minor amount of

Send Inquiry
migration and blooming of waxes to the surface of rubber

Migration and blooming of waxes to the surface of rubber

This phenomenon, known as blooming, depends on the substance being soluble at the vulcanization temperature but only partially soluble at the temperature of blooming. A study has been made using pure waxes in natural rubber vulcanizates with a range of crosslink densities.

Send Inquiry
analysis of wax solubility of rubber vulcanizates using

Analysis of wax solubility of rubber vulcanizates using

Wax compounded into rubber is capable of migrating to the surface, thereby providing protection against ozone attack by formation of an impervious barrier , , . The ability of a wax to migrate to the surface depends upon the specific wax type, the rubber composition, and the time and temperature before and during exposure to ozone.

Send Inquiry
antiozant waxes (d.o.g) - rbh ltdrbh ltd

Antiozant Waxes (D.O.G) - RBH LtdRBH Ltd

Controzon waxes form a flexible film on the surface of vulcanizates to protect them from crack formation due to ozone attack under static conditions. Additionally, controzon waxes act as carriers for chemical ozone protecting agents and antioxidants, and improve their effectiveness.

Send Inquiry
rubber division, acs - journal - table of contents

Rubber Division, ACS - Journal - Table of Contents

Migration and Blooming of Waxes to the Surface of Rubber Vulcanizates. S. H. Nah and A. G. Thomas Abstract | (353 KB) ... Effects of Wax and Substituted p-Phenylenediamine Antiozonants in Rubber. ... Published by Rubber Division, ...

Send Inquiry
the impact of antiozonants on rubber-to-metal adhesion

The Impact of Antiozonants on Rubber-to-Metal Adhesion

All diene rubber vulcanizates contain free double bonds which are sensitive to attack by molecular oxygen and ozone. To reduce this sensitivity, they are usually formulated with active antiozonants, both to protect against the degrading effects of ozone and to improve the resistance to fatigue in dynamic applications.

Send Inquiry
the role of petroleum waxes in the protection of rubber

The role of petroleum waxes in the protection of rubber

The role of petroleum waxes in the protection of rubber The use of petroleum waxes to protect or assist in the protection of double bonded elastomers from the destructive effects of ozone has long been known, while the mechanism by which these petroleum hydrocarbons fulfill their protective functions has more recently been elucidated, and can be followed by the analytical technique of high temperature gas chromatography.

Send Inquiry
effect of the degree of unsaturation of fatty acids

Effect of the degree of unsaturation of fatty acids

associated with differences in the effect of saturated and unsaturated acids on the parameters investigated. A similar effect was observed (Ref. 5) in a study of the effect of fatty acids and their methyl esters (saturated stearic acid and unsaturated linoleic acid (containing two double bonds)) on the process of crystallisation of isoprene rubber (SPI).

Send Inquiry
effect of compounding ingredients and crosslink

Effect of Compounding Ingredients and Crosslink

The effect of crosslink concentration on blooming rate of the compounded rubber was then determined. The blooming rate was determined by the weight of the blooming material on the rubber surface as a function of time. The blooming rate was found to be affected by the types of compounding ingredients and crosslink density of rubber.

Send Inquiry
natural rubber

Natural rubber

Rubber produced as a fiber, sometimes called 'elastic', had significant value to the textile industry because of its excellent elongation and recovery properties. For these purposes, manufactured rubber fiber was made as either an extruded round fiber or rectangular fibers cut into strips from extruded film.

Send Inquiry
the effect of waxes on rubber vulcanisates | request pdf

The Effect of Waxes on Rubber Vulcanisates | Request PDF

Certain substances like wax, when incorporated into rubber vulcanisates during mixing prior to vulcanisation are able to bloom and form a surfaceIn this paper, the effect of different waxes and their blends on the properties of sidewall compounds with varying natural rubber/butadiene rubber

Send Inquiry
the effect of waxes on rubber vulcanisates

The Effect of Waxes on Rubber Vulcanisates

Certain substances like wax, when incorporated into rubber vulcanisates during mixing prior to vulcanisation are able to bloom and form a surfaceIn this paper, the effect of different waxes and their blends on the properties of sidewall compounds with varying natural rubber/butadiene rubber

Send Inquiry
effects of acrylonitrile content on thermal degradation

Effects of acrylonitrile content on thermal degradation

The thermal degradation properties of nitrile-butadiene rubber (NBR) vulcanizates were studied by DSC-TGA, and the changing process during degradation of NBR was analyzed by TGA-FT-IR. The results show that cross-linking and cyclization reaction of NBR occur

Send Inquiry
effect of devulcanizer on the properties of natural rubber

Effect of Devulcanizer on the Properties of Natural Rubber

3 Effect of Devulcanizer on Natural Rubber Vulcanizates Table 1. Base formulation of NR compound Recipe/Code Weight per 100 parts of8b) demonstrated quite clearly the effect of devulcanizer on natural rubber vulcanizates. It is evident from Fig.8b that the

Send Inquiry
some factors affecting the flex life of polybutadiene rubber vulcanisate

Some factors affecting the flex life of polybutadiene rubber vulcanisate

For the silica-filled rubber vulcanisate, the rubber with the highly linear chains had the longest flex life and the one with long-branched chainsIsmail H, Omar NF, Othman N (2011) Effect of carbon black loading on curing characteristics and mechanical properties of waste tire dust/carbon black hybrid filler

Send Inquiry
effect of metal oxides on the properties of carboxyl nitrile rubber

Effect of metal oxides on the properties of carboxyl nitrile rubber

Cure and mechanical properties of carboxylated nitrile rubber (xnbr) vulcanized by alkaline earth metal compounds.

Send Inquiry
effect of crosslink type on the fracture of natural rubber

Effect of crosslink type on the fracture of natural rubber

The effect of the chemical nature of the crosslinks on the fatigue crack growth behavior of filled natural rubber has been investigated.Vulcanizates with primarily monosulfidic crosslinks exhibited lower cut growth rates than peroxide cured specimens, although the

Send Inquiry
rubber vulcanizates - an overview | sciencedirect topics

Rubber Vulcanizates - an overview | ScienceDirect Topics

Cure of rubber vulcanizates is commonly measured using a Monsanto cure rheometer, which plots theIn a different investigation [187], they studied the effect of thermally exfoliated graphene oxide (TEGO) on the physicochemical properties of NR vulcanizates.

Send Inquiry
vulcanisates rubbers - big chemical encyclopedia

Vulcanisates rubbers - Big Chemical Encyclopedia

Terpolymer(EPDM) rubber vulcanisates - effect of silica filler and blowing agentCertain compounds were observed by FD but not by FAB (wax, oil, isocyanurate antioxidant TDBHI).The degree of moisture present affects the properties of the silicone rubber vulcanisate.

Send Inquiry
vulcanization & accelerators

Vulcanization & Accelerators

Vulcanizate Properties of a rubber vulcanizate depend strongly on the cross link density.Effect of Cure Systems on Cross link types and vulcanizate properties: The cure system selected influences the properties of the vulcanizates as summarized in the

Send Inquiry