Toughening of polyamide 6 with β-nucleated thermoplastic vulcanizates based on polypropylene/ethylene–propylene–diene rubber grafted with maleic anhydride blends

2012 ◽  
Vol 33 ◽  
pp. 104-110 ◽  
Author(s):  
Li-Feng Ma ◽  
Xin-Feng Wei ◽  
Qi Zhang ◽  
Wei-Kang Wang ◽  
Li Gu ◽  
...  
Keyword(s):  
Maleic Anhydride ◽  
Polyamide 6 ◽  
Ethylene Propylene ◽  
Thermoplastic Vulcanizates ◽  
Ethylene Propylene Diene Rubber ◽  
Diene Rubber

scholarly journals Effect of Cross-Linking Degree of EPDM Phase on the Morphology Evolution and Crystallization Behavior of Thermoplastic Vulcanizates Based on Polyamide 6 (PA6)/Ethylene-Propylene-Diene Rubber (EPDM) Blends

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1375 ◽  
Author(s):  
Lifeng Ma ◽  
Wei Yang ◽  
Hui Guo
Keyword(s):  
Polyamide 6 ◽  
Crystal Form ◽  
Industrial Applications ◽  
Plastic Layer ◽  
Morphology Evolution ◽  
Ethylene Propylene ◽  
Thermoplastic Vulcanizates ◽  
Ethylene Propylene Diene Rubber ◽  
Nano Size ◽  
Diene Rubber

As a special class of “green” elastomers, thermoplastic vulcanizates (TPVs) have been widely used in industries due to the combination of the excellent resilience of conventional elastomers and the easy recyclability of thermoplastics. Here, the morphology evolution of TPVs based on polyamide 6/ethylene-propylene-diene rubber (PA6/EPDM) blends was investigated by varying the content of the curing agent, phenolic resin (PF). With the incorporation of 6 wt% PF, the gel content of the EPDM phase reaches a high value of 49.6 wt% and a typical sea-island structure is formed with EPDM domain in a micro-nano size. The dynamic rheology behaviors of TPVs showed that with the curing degree of EPDM phase increasing, a denser network of EPDM particles is formed in PA6 matrix. Additionally, a lower crystal degree and crystal peak temperature are observed, indicating that there exists a growth restriction of PA6 crystal plate induced by a thinner plastic layer between the adjacent EPDM particles. However, the crystal form of PA6 is not changed with the increasing curing degree of the EPDM phase. This study provides an effective strategy to realize a new kind of TPVs, which can be easily introduced into industrial applications.

Polyamide Reinforced EPDM Compatibilized with Maleic Anhydride Grafted Ethylene-Propylene-Diene Rubber

2003 ◽  
Vol 11 (3) ◽  
pp. 179-188
Author(s):  
Xin Liu ◽  
Hua Huang ◽  
Yong Zhang ◽  
Yinxi Zhang
Keyword(s):  
Maleic Anhydride ◽  
Thermal Ageing ◽  
Scanning Calorimetry ◽  
Reactive Compatibilization ◽  
Ethylene Propylene ◽  
Ethylene Propylene Diene Rubber ◽  
The Stability ◽  
Diene Rubber ◽  
Crosslinking Agents ◽  
Scanning Electron

Vulcanizates of blends of ethylene-propylene-diene rubber (EPDM) and polyamide (PA) copolymer were prepared by reactive compatibilization. A reactive route was employed to compatibilize these blends by the addition of maleic anhydride EPDM (MAH-g-EPDM). In this paper, the influence of compatibilizers, crosslinking agents, and blend composition on the mechanical properties of the blends were investigated. The morphologies of the blends were determined by scanning electron microscopy. It was found that the addition of MAH-g-EPDM reduced the particle size of the dispersed phase remarkably. The stability of the blend was measured by thermal ageing at high temperature in the presence of compatibilizer. Both dynamic mechanical thermal analysis and differential scanning calorimetry experiments were carried out to investigate the effect of MAH-g-EPDM addition on the Tgs of the blend components. The addition of PA copolymer caused significant improvement in the tensile properties of these blends.

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.

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