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JW Latex Consultants (and Rubber Consultants,乳胶顾问) offer solutions to your problems in Natural Rubber latex and Synthetic Rubber latex processing and the manufacturing of latex products (condoms, catheters, medical gloves, baby teats and soothers, toy balloons etc) Quick answers through e-mails are possible at reasonable cost.

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Saturday, April 30, 2022

Colloidal Stability of Compounded Latex

Manufacturer: We have an experience of coagulation of compounded over matured latex kept in barrels. Normally, during plant shut down compounded latex left in the dipping tank is collected in barrels and kept as over-matured latex.

How did the coagulation of compounded happen? Is it because of poor preservation ? or due to some other molecular change due to chemical reaction of compounding ingredients? How is the bacterial attack possible with the presence of compounding chemicals?

John Woon (Senior Latex Consultant): Compounded latex does not store well unless it is a properly prepared prevulcanised latex.

The presence of Zn ions from ZnO and zinc salt of dithiocarbamates could destablise the latex. You could control but not eliminate it totally. Of course, if the original latex concentrate has not been properly preserved and produced, it could make the situation worse!
 
Make sure the parameters of latex specification are suitable for your purpose, especially the VFA Number and MST.

Please adjust the pH of the latex to about 10.00 and add extra soap such as potassium laurate followed by a slow and gentle filtering process.

 


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Assessment of Latex Stability

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Creaming of Latex

What is Vulcanization?

History of Latex Dipped Products

Applications of Prevulcanized Latex

Defoamer Creating Havoc in Glove Factory

Problems With Milling Rubber Chemicals

Medical Gloves From Guayule Latex

Introduction to SMG Gloves

 

 

Click on The Following Links to Read More Articles:

[Advantages of Vulcanization] [Applications of PV Latex] [Bacteria and Latex] [Chemical Toxicity] [Cross-Linking Density] [Biodegradability] [Black Articles] [Blooming] [Bouncing Ball] [Compression Set] [Condoms] [Creaming] [Defoamer] [FDA] [Fatty Acid Soaps] [Flame Retardant] [Flocking] [Food Packaging] [Glove Demand] [Glove Selection] [Guayule Latex] [History of Gloves] [Joul Effect] [Latex Stability] [Latex Thread] [Milling Problem] [MREPC Articles] [Nano Polymer Particles] [Nano ZnO] [Polychloroprene] [REACH] [SMG] [Storage Hardening] [Vulcanization] [Vytex] [Yulex]

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The information and data contained in this site are believed to be accurate and reliable. However it is the responsibility of the visitors and readers to satisfy themselves that the information is workable under their own processing conditions. Hence the owners of this site make no warranties concerning the suitability of the information given in this site.

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