Plastomer

About: Plastomer is a research topic. Over the lifetime, 388 publications have been published within this topic receiving 4160 citations.

Polyolefin-based resin composition for extrusion foaming and expanded material thereof

Abstract: PROBLEM TO BE SOLVED: To provide a polyolefin-based resin composition for extrusion foaming capable of providing expanded material which has a high expansion ratio and is flexible regardless of a melt tension of a polyolefin-based resin, and to provide a polyolefin-based resin expanded material obtained by the polyolefin-based resin composition for extrusion foamingSOLUTION: The polyolefin-based resin composition for extrusion foaming contains (a) a polyolefin-based resin, and (b) (b1) an elastomer and (b2) a plastomer, where the mixing ratio of (a) and (b) is in the range of 90/10 to 10/90 by a mass ratio, and the mixing ratio of (b1) and (b2) is in the range fo 90/10 to 10/90 by a mass ratio

Lab study on chemical and rheological changes in modified binders

Abstract: The challenge in physical property characterization is to develop physical tests that can satisfactorily characterize key asphalt binder parameters and how these parameters change throughout the life of an HMA pavement. In India, the methods for rheological characterization of bituminous binders are inadequate to characterize the bitumen. Hence a complete rheological study and characterization of bitumen using dynamic shear rheometer would be helpful. Also there is limited insight about the chemistry of modified bitumen. Ethylene Vinyl Acetate (EVA), a plastomer; Linear Styrene Butadiene Styrene (SBS), an elastomer, and Crumb Rubber (CR) were used in the present study. The changes in rheological and chemical properties of 60/70 and 80/100 grades bitumen modified with different percentage of CR, EVA and SBS (2 to 8 per cent) were studied. The rheological properties of the bituminous binders, in terms of their complex modulus (G*), stiffness and overall resistance to deformation, storage modulus (G*), binder elasticity, loss modulus (G"), viscous behaviour and phase angle (ϐ), viscoelastic behaviour were measured. Testing was performed at temperatures ranging from 46°C to 82°C in increments of 6°C at a frequency of 10 rad/sec. The chemistry was studied using infrared spectroscopy.

Thermoset insulation composition

Abstract: Crosslinkable insulation materials, which are commonly halogen-free, for use in wire and cable applications are provided. The insulation include a crosslinkable thermoplastic polymer and flame retardant material. The flame retardant material may include a metal hydroxide flame retardant, such as a magnesium, calcium, zinc and/or aluminum hydroxide. The crosslinkable thermoplastic polymer includes silane-grafted polymer blend, which includes a polyolefin plastomer blended with one or more other thermoplastic polymers. The crosslinkable thermoplastic polymer may be curable by exposure to moisture and may include moisture curable silane functionality in the crosslinkable thermoplastic polymer.

Shock absorber and vibration damper comprises block of open-cell foam with cavities containing second deformable material such as resin

Abstract: Shock absorber and vibration damper (1) consists of a deformable structure (2) of a first material (3) such as a plastomer or elastomer foam with open cavities (4). The cavities contain a second material (5) such as an injected resin that is able to deform elastically under mechanical shock or pressure. Shock absorber and vibration damper (1) consists of a deformable structure (2) of a first material (3) such as a plastomer or elastomer foam with open cavities (4). The cavities contain a second material (5) such as an injected resin that is able to deform elastically under mechanical shock or pressure. The structure can be enclosed in an envelope or have a covering layer of a woven material to give it extra strength and prevent contact with other materials.

Thermoelastic plastics components - of high mol wt moulded from very low mol wt plastomers

Abstract: The components are moulded from a very low mol. wt. plastomer, e.g. polyethylene of mol. wt. 20000, which is cross linked during processing. Prefd. moulding mix is 2-3 wt.% 1,3-bis(t-butyl-peroxyisopropyl) benzene, 1-5 wt.% triallycyanurate and polyethylene of mol. wt. 2500-10000. High quality films, tube/container linings or coatings and adhesives are produced simply and cheaply.