High Flow TPO Compounds Containing Branched EPDM Modifiers

Dharmarajan, N.; Kaufman, L. G.

doi:10.5254/1.3538504

Cited by 8 publications

(5 citation statements)

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“…The bimodal distribution of rubber particles in the present study can also be clearly observed from the histograms of Figure 5. Generally, unimodal distribution was observed in most polymer blends such as nylon 66/EPR,7 nylon 6/ULDPE,32 and PP/EPDM blends 33. However, Jang observed a bimodal distribution of SBR particles in PP/SBR blends 29.…”

Section: Resultsmentioning

confidence: 95%

Quantitative characterization of dispersed particle size, size distribution, and matrix ligament thickness in polypropylene blended with metallocene ethylene–octene copolymers

Premphet

Paecharoenchai

2001

J of Applied Polymer Sci

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The average rubber particle size, size distribution, and matrix ligament thickness between particles in polypropylene blends containing metallocene catalyzed ethylene-octene copolymers have been quantitatively analyzed, as functions of blend composition and phase viscosity ratio. Comparison has been made between experimental data and those predicted from a number of theoretical models. All blends showed two-phase morphology, with interestingly a bimodal distribution of the rubber particle size. The ranges and averages of rubber particle size were mainly determined by blend composition and viscosity ratio between the phases, irrespective of comonomer content along the rubber chains. The logarithmic relationship between the matrix ligament thickness and rubber concentration was observed. The values of ligament thickness obtained from the experiments and theoretical models were not in agreement.

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Section: Resultsmentioning

confidence: 95%

Quantitative characterization of dispersed particle size, size distribution, and matrix ligament thickness in polypropylene blended with metallocene ethylene–octene copolymers

Premphet

Paecharoenchai

2001

J of Applied Polymer Sci

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“…Recently, a few polyolefins‐based thermoplastic elastomeric (TPE) blends were developed. [ 104–116 ] TPE is an interesting hybrid polymeric material having thermoplastic‐like processability and elastomer‐like flexibility. [ 117–130 ] Banerjee et al.…”

Section: Fdm 3d Printing Of Polyolefins‐based Materialsmentioning

confidence: 99%

“…Recently, a few polyolefins-based thermoplastic elastomeric (TPE) blends were developed. [104][105][106][107][108][109][110][111][112][113][114][115][116] TPE is an interesting hybrid polymeric material having thermoplastic-like processability and elastomer-like flexibility. [117][118][119][120][121][122][123][124][125][126][127][128][129][130] Banerjee et al developed a 3D printable PP and SEBS thermoplastic elastomeric blend.…”

Section: Fdm 3d Printing Of Blends Of Polyolefinsmentioning

confidence: 99%

Fused Deposition Modeling of Polyolefins: Challenges and Opportunities

Verma

Awasthi

Gupta

et al. 2022

Macro Materials & Eng

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Polyolefins are the largest class of commercially available synthetic polymers that are extensively used in a variety of applications from commodities to engineering owing to their low cost of production, good physico‐mechanical properties, light weight, good processability, and recyclability. Compared to conventional molding techniques, fused deposition modeling (FDM)‐based 3D printing is a smart manufacturing technology for thermoplastics due to its low cost, ease of production of complex geometrical parts, rapid prototyping, and scalable customization. FDM 3D printing can be an ideal manufacturing technology for polyolefins to manufacture various complex parts. However, FDM 3D‐printing of polyolefins is challenged bycritical printing problems like high warpage, dimensional inaccuracies, poor bed adhesion, and poor layer‐to‐layer adhesion. In this review, a fundamental understanding of polyolefins and their FDM 3D‐printing process is established, and the recent progress of FDM 3D printing of polyolefins is summarized. Furthermore, strategies to overcome warpage and to improve mechanical strength of the 3D‐printed polyolefins are provided. Finally, future prospectives of FDM 3D‐printing of polyolefins are critically discussed to inspire prospective research in this field. It is believed that this review article can be tremendously useful for research work related to FDM of polyolefin‐based materials.

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“…Elastomer fractures into a lot of microparticles at high shearing force, disperses in low component thermoplastic matrix, and phase inversion takes place. Therefore, the intensity, elasticity, resistance to heat, resistance to weather, and resistance to impact of TPE improve obviously, and thermoplastic flow, resistance to fatigue, resistance to chemistry, and processing stability become better [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Performance of Dynamically Vulcanized Thermoplastic Elastomer under Vibration Force Field

2007

Journal of Thermoplastic Composite Materials

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The mechanism of vibration force field on dynamically vulcanized thermoplastic elastomers (TPE) is studied through the analyses of their mechanical properties, DSC, XRD, and TGA. Experimental results show that the tensile strength, tensile stress at 100%, and elongation at break of TPE increase within a certain range, but shore A hardness decreases with the increase in the vibrational frequency or amplitude. With the increase in the rubber and plastics ratio, the tensile strength, tensile stress at 100%, and shore A hardness of TPE decrease, but elongation at break increases. The mechanical properties of TPE processed in dynamic condition are better than those in steady condition. The interpenetration and entanglement of macromolecular chains between ethylene-propylene-diene terpolymer (EPDM) and polypropylene (PP) under vibration force field strengthen, the influence of amorphous component on the crystallinity of crystalline component increases, and the miscibility of two-phase interface increases. Therefore, introduction of vibration force field can improve the melting temperature, resistance to heat, and thermal stability of TPE, reduce the crystallinity of crystalline component PP, and increase vulcanization rate. Shearing and elongational effect of vibration force field strengthens deformation, fracture, fineness, and dispersion of EPDM in matrix PP, and side effect of over-vulcanization or degradation caused by local high temperature reduces, which enhances phase inversion of blending systems and realizes processing control of dynamic vulcanization, mixing dispersion, and reactant performance.

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High Flow TPO Compounds Containing Branched EPDM Modifiers

Cited by 8 publications

References 0 publications

Quantitative characterization of dispersed particle size, size distribution, and matrix ligament thickness in polypropylene blended with metallocene ethylene–octene copolymers

Quantitative characterization of dispersed particle size, size distribution, and matrix ligament thickness in polypropylene blended with metallocene ethylene–octene copolymers

Fused Deposition Modeling of Polyolefins: Challenges and Opportunities

Performance of Dynamically Vulcanized Thermoplastic Elastomer under Vibration Force Field

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