Development and characterizations of <scp>ultra‐high</scp> molecular weight <scp>EPDM</scp>/<scp>PP</scp> based <scp>TPV</scp> nanocomposites for automotive applications

Bhattacharya, Asit Baran; Raju, Aswathy Thuruthil; Chatterjee, Tuhin; Naskar, Kinsuk

doi:10.1002/pc.25765

Cited by 36 publications

(50 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is observed for all the samples, degradation temperature range is all most same for all the TPV samples, which is from 490 to 500°C. [ 38–42 ] In the TSSR study, the best thermomechanical property has been found for ZMA, then ZDMA, and followed by the other co‐agents. It is also identified that the TGA result and TSSR result follow the same tendency.…”

Section: Resultsmentioning

confidence: 99%

Exploring the thermomechanical properties of peroxide/co‐agent assisted thermoplastic vulcanizates through temperature scanning stress relaxation measurements

Bhattacharya

Anagha

Chatterjee

et al. 2021

Polymer Engineering & Sci

Self Cite

View full text Add to dashboard Cite

Temperature scanning stress relaxation (TSSR) measurement of peroxide vulcanized polymer blends of polypropylene (PP) and ultrahigh molecular‐EPDM (UHM‐EPDM) rubber has been performed to study the thermomechanical behavior of thermoplastic vulcanizates (TPVs). Co‐agents play crucial roles in the enhancement of properties of TPVs. Different types of co‐agents (Triallyl cyanurate‐TAC; N, N‐m‐phenylene‐dimaleimide‐HVA2; zinc dimethacrylate‐ZDMA; and in‐situ formed zinc dimethacrylate‐ZMA) have been explored in this work. TSSR study shows that higher T50 and T90 values have been achieved in ZMA co‐agent assisted‐TPV. Higher TSSR‐index (RI) value was also found for the same co‐agent ZMA, indicating higher elastic behavior. TSSR result supports the mechanical and rheological properties, and it is found that the ZMA and ZDMA show higher mechanical strength. Cross‐linked‐density calculated by modified Flory–Rehner equation and the cross‐link‐density as obtained from TSSR method have been compared and the trend was found to be the same. Stress relaxation study shows the slow relaxation‐phenomena of the ZMA‐TPV with slowest relaxation‐time (θr) than the other TPVs, which correlates with superior material strength. Thermogravimetric analysis proves that there is a difference in degradation temperature of the blends at approximately 5–10°C. Ultrahigh molecular weight‐EPDM/PP based TPVs reveal superior thermomechanical and physico‐mechanical properties with ZMA and ZDMA co‐agent over TAC and HVA2. These ultrahigh molecular weight‐EPDM based TPVs can be used in automotive seals/strips, hoses, bellows, and 2 K‐molds for automotive applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Exploring the thermomechanical properties of peroxide/co‐agent assisted thermoplastic vulcanizates through temperature scanning stress relaxation measurements

Bhattacharya

Anagha

Chatterjee

et al. 2021

Polymer Engineering & Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…Based on developments in Daw Chemicals catalyst technology, novel grades of EPDM, i.e., ultrahigh molecular weight EPDM, known as (UHMW)NORDEL™ were developed. NORDEL is highly efficient in producing thermoplastic vulcanizates (TPVs), light color home appliance gaskets, and black color low hardness molded articles [33,34].…”

Section: α-Olefin (Co)polymersmentioning

confidence: 99%

Extending Alkenes’ Value Chain to Functionalized Polyolefins

Balzade¹,

Sharif²,

Anbaran³

2021

Alkenes - Recent Advances, New Perspectives and Applications

View full text Add to dashboard Cite

Naphtha is one of the crude oil distillation products, bringing almost the lowest value-addition to crude oil, compared to other refinery products such as liquid petroleum gas, gasoline, and diesel. However, Naphtha can be converted to one of the highest value products at the end of the value chain, i.e., polyolefins. Although the production of conventional commodity polyolefins from crude oil, is considered as one of the final products in alkenes’ value chain, there are specialty polyolefins with higher values. Specialty polyolefins are small volume, high-performance thermoplastics with high-profit margins compared to traditional commodity polyolefins. Recently, some special purpose functionalized polyolefins have been developed as efficient substituents for high-performance engineering thermoplastics. Polyolefins are exploited as cost-effective platforms to produce these functionalized thermoplastics. They are promising candidates for replacing high-performance polymers with high-cost raw materials and elaborate production processes. So, functional polyolefins have introduced a new paradigm in the production of high-performance thermoplastics, extending the alkenes’ value chain and increasing profitability. High-performance specialty polyolefins may find exceptional markets in niche applications. In this chapter, the commercial specialty and functional polyolefins’ current situation and prospects are reviewed.

show abstract

“…The Formula (9) shows that the internal energy of PNB changes slowly in the tensile process [29]. It is assumed that there are no intramolecular and intermolecular forces in PNB, and the internal energy of the system remains unchanged when the elastomer deforms.…”

Section: Shape Memory Performancementioning

confidence: 99%

Dual Covalent Cross-Linking Networks in Polynorbornene: Comparison of Shape Memory Performance

et al. 2021

View full text Add to dashboard Cite

In this work, tetrakis(dimethyllamino)ethylene (TDAE) plasticized polynorbornene (PNB) was used as the matrix, sulfur (S) and dicumyl peroxide (DCP) were simultaneously used as crosslinking agents to construct dual covalent cross-linking networks in PNB. The effects of different amounts of cross-linkers on the crosslinking degree, mechanical property, glass transition temperature, and PNB shape memory performance were investigated. Two crosslinking mechanisms were examined by Fourier transform infrared spectrometer and Raman spectrometer. The results showed that sulfur-rich cross-linked PNB exhibited a higher crosslinking degree, tensile strength, and slightly higher glass transition temperature than the DCP-rich system. Cross-linked PNB presented better shape memory performance than the uncross-linked one. Sulfur-rich cross-linked PNB showed even better shape memory behavior than the DCP-rich system, both with a shape fixation ratio of over 99% and a shape recovery ratio of over 90%. The reaction mechanism of sulfur and DCP in cross-linking PNB was different. Sulfur reacted with the α-H in PNB to form monosulfide bonds, disulfide bonds, and polysulfide bonds in PNB and the number of polysulfide bonds increased with increased amounts of sulfur. DCP reacted with the double bonds in PNB to form C-C covalent bond crosslinking networks. The crosslinking mechanism revealed that the sulfur-containing cross-linked bonds, especially polysulfide bonds, were more flexible and bore large deformation, which gave the PNB excellent mechanical properties and ensured a higher shape entropy elastic recovery ratio.

show abstract

Development and characterizations of ultra‐high molecular weight EPDM/PP based TPV nanocomposites for automotive applications

Cited by 36 publications

References 35 publications

Exploring the thermomechanical properties of peroxide/co‐agent assisted thermoplastic vulcanizates through temperature scanning stress relaxation measurements

Exploring the thermomechanical properties of peroxide/co‐agent assisted thermoplastic vulcanizates through temperature scanning stress relaxation measurements

Extending Alkenes’ Value Chain to Functionalized Polyolefins

Dual Covalent Cross-Linking Networks in Polynorbornene: Comparison of Shape Memory Performance

Contact Info

Product

Resources

About