-----------------

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.

You Are Visitor Number:

counter
Expedia Promotional Codes

__________________________

This Site Is Best Viewed With Mozilla Firefox Browser. If You Are Viewing With Internet Explorer, It Is Advisable to Switch to Mozilla Firefox By Going to This Link -> http://www.mozilla.org/en-US/firefox/new/

It Is Free to Download

__________________________

Send Your Enquiry and Orders To: woonsungliang@yahoo.com.sg

Problem Solving Through E-Mails with John Woon Latex Consultants Is Possible
可以通过电子邮件与JW乳胶顾问来解决问题

__________________________

Please kindly donate to support the maintenance of this site. We'd appreciate it very much.

__________________________

__________________________________________________________________________

Sunday, January 22, 2017

How to Obtain Small Natural Rubber Particles for Textile Impregnation?

Manufacturer: We are manufacturing textile and similar products treated with natural rubber latex. We understand that one of the criteria of good penetration and impregnation of the rubber into the textile is the rubber particle size in the latex i.e. we need small rubber particles.



We have been told that in the normal centrifuged latex concentrates, the inherently smaller rubber particles of the latex have been removed by the centrifugation process. My question is how and where do we obtain such small sized rubber particles which are originally present in the latex?


John Woon (Senior Latex Consultant): Good question! Though it is possible it is costly to recover the small sized rubber particles from the skim after the centrifugation of field latex to obtain the concentrated latex.

Fortunately all is not lost because latex concentrates made by evaporation process are commercially available from Revertex Malaysia (Synthomer). In the evaporation process, only water is removed from the latex hence the inherently present small rubber particles are not removed, unlike the centrifuged latex.

Also, these evaporated latex concentrates have excellent mechanical and compounding stability besides having excellent penetrating property. They are available with 68% and 73% TSC.


How to Minimize Copper Staining While Maintening Dithiocarbamates in the Compound Fromulations

Manufacturer: We are a medium sized factory manufacturing latex thread and other dipped products. In one of our products we would like to minimize copper staining. We also want good heat resistance. However we do not want to replace dithiocarbamate in your latex compound. What shall we do?

John Woon (Senior Latex Consultant): It is not easy to prevent copper staining without removing dithiocarbamates from your latex compound formulations. However, I have the following suggestion to control the staining:

1) Try reducing the level of dithiocarmate to the very minimal while adding a thiazole (ZMBT) as the main accelerator. The reduced level of dithiocarbamate is such that it still gives you reasonable rate of vulcanization and physical properties of the final products.

2) If you are using ZDEC, replace it with ZDBC as the latter has lesser tendency to cause migration staining.

As for heat resistance, you can try sulphur donors such as TMTD, DPTT or Morpholine disulphide in conjunction with thiazoles.

__________________________

What has the bouncing ball to do with tyres?

Latex Gloves Educational Articles from the Malaysian Rubber Export Promotion Council

How do you select your medical gloves?

Rubber Chemicals: Carcinogenicity, Mutagenicity, Clastogenicity.

Why is Compression Set measurement important?

Assessment of Latex Stability

Joule Effect

Poor Flocking Quality Of Household Gloves

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]

Disclaimer:
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.

__________________________