Adhesion properties of (epoxidized natural rubber)/(ethylene-propylene-diene rubber) blend adhesive: Effect of blend ratio and testing rate

2014 ◽  
Vol 22 (2) ◽  
pp. 134-139 ◽  
Author(s):  
B.T. Poh ◽  
Y.Y. Teh
Keyword(s):  
Natural Rubber ◽  
Epoxidized Natural Rubber ◽  
Adhesion Properties ◽  
Blend Ratio ◽  
Ethylene Propylene ◽  
Rubber Blend ◽  
Testing Rate ◽  
Ethylene Propylene Diene Rubber ◽  
Adhesive Effect ◽  
Diene Rubber

Compatibilization Efficiency of Polybutadiene-Grafted Maleic Anhydride in Ethylene-Propylene Diene Rubber/Epoxidized Natural Rubber Blends

2016 ◽  
Vol 705 ◽  
pp. 45-49 ◽  
Author(s):  
Sarawut Prasertsri ◽  
Pranee Nuinu ◽  
Sansanee Srichan ◽  
Siriwat Radabutra ◽  
Chaiwute Vudjung ◽  
...  
Keyword(s):  
Maleic Anhydride ◽  
Natural Rubber ◽  
Dynamic Properties ◽  
Epoxidized Natural Rubber ◽  
Cure Rate ◽  
Maximum Torque ◽  
Ethylene Propylene ◽  
Rubber Blends ◽  
Ethylene Propylene Diene Rubber ◽  
Diene Rubber

This research aims to investigate the efficiency of polybutadiene-grafted maleic anhydride (PB-g-MAH) as the compatibilizer for ethylene-propylene diene rubber and epoxidized natural rubber (EPDM/ENR) blends. PB-g-MAH was varied from 0-10 parts per hundred parts of rubber (phr), and the cure characteristics, mechanical and dynamic properties of 70/30 EPDM/ENR blends with and without compatibilizer were evaluated. It was found that the minimum torque, maximum torque, scorch and cure times of the blends increased after adding PB-g-MAH, whereas cure rate decreased. The morphology of the blend is improved by the addition of PB-g-MAH in small amounts, owing to an improved compatibility of these rubbers confirmed by dynamic mechanical property. The hardness and oil resistance increased with increasing PB-g-MAH content. Of all blends investigated, the blend compatibilized with 2-4 phr of PB-g-MAH shows the optimum mechanical properties and thermal resistance.

scholarly journals Dependence of Adhesion Properties on Blend Ratio of Ethylene-Propylene-Diene Rubber/Standard Malaysian Rubber Blend Adhesive

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
B. T. Poh ◽  
J. Lamaming ◽  
G. S. Tay
Keyword(s):  
Dilution Effect ◽  
Peel Strength ◽  
Adhesion Properties ◽  
Blend Ratio ◽  
Ethylene Propylene ◽  
Ethylene Propylene Diene Rubber ◽  
Poly Ethylene ◽  
Pet Film ◽  
Blend Ratios ◽  
Diene Rubber

Viscosity, tack and, peel and shear strengths of ethylene-propylene-diene rubber (EPDM)/standard Malaysian rubber (SMR L) blend adhesive were studied using various blend ratios of the two rubbers, ranging from 0 to 100% EPDM. Coumarone-indene resin, toluene, and poly(ethylene terephthalate) (PET) were used as the tackifier, solvent, and coating substrate, respectively. The tackifier content was fixed at 40 parts per hundred parts of rubber (phr). A SHEEN hand coater was used to coat the adhesive on PET film at four coating thicknesses, that is, 30, 60, 90, and 120 µm. The viscosity and adhesion properties were determined by a Brookfield viscometer and a Lloyd Adhesion Tester, respectively. Results show that the viscosity, loop tacks and peel strength of blend adhesives decrease gradually with increasing % EPDM. This observation is attributed to dilution effect and lowering in wettability and compatibility. Shear strength, however, passes through a maximum at 20–40% EPDM blend ratio, an observation which is ascribed to culmination of cohesive strength at the optimum EPDM blend ratio. Increasing coating thickness increases the adhesion properties in all blend ratios in this study.

Sign in / Sign up

Export Citation Format

Share Document