Plastomer

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

Strip-shaped slow-release scale inhibitor and preparation method thereof

Abstract: The invention discloses a strip-shaped slow-release scale inhibitor The strip-shaped slow-release scale inhibitor is prepared from the following components in percentage by weight: 40% to 60% of scale inhibitor, 10% to 30% of adhesive, and 20% to 40% of water In addition, the invention also discloses a preparation method of the strip-shaped slow-release scale inhibitor The preparation method comprises the following steps of (1) fully stirring the scale inhibitor, the adhesive and the water, so as to form a uniform plastomer; (2) extruding and forming the plastomer in step (1), so as to obtain a wet material of the strip-shaped slow-release scale inhibitor; (3) drying the wet material of the strip-shaped slow-release scale inhibitor in step (2), so as to obtain the strip-shaped slow-release scale inhibitor The strip-shaped slow-release scale inhibitor has the advantages that the preparation method is simple, the mechanical strength is high, and the lasting scale inhibiting effect is realized

Completely biodegradable starch-base plastics and plastomer material and their prepn process

Abstract: The present invention is completely biodegradable starch-base plastics and rubber material and their preparation process. The completely biodegradable starch is added with high efficiency organic plasticizer and heat stabilizer and the mixture is processed through extrusion, molding, injection and spinning to form completely biodegradable starch-base plastics and rubber material. The starch-base plastics and rubber material may be thermoplastic processed, has excellent mechanical performance, no ageing and practical production value, and is environment friendly without environmental pollution.

γ-Irradiation of rubber and styrene. Graft polymer formation

Abstract: Styrene, styrene mixed with rubber, and rubber alone have been exposed to gamma radiation from Co-60. The G value for polymerization-initiating radicals formed from rubber in the mixtare, G(i.r.) = 0.26, has been calculated from corresponding values obtained by estimation of the number of polystyrene molecules formed in styrene and in the mixture. A G (radical) value for rubber when irradiated alone, G(r), has been assessed from a G (crosslinking) value, G(X), which was determlned under closely similar experimental conditions, as G(r) = 2G(X) ~ 6. The large discrepancy between G(r) and G(i.r.) cannot be explained satisfactorily on the supposition that radicals formed from rubber have a low efficiency in initiating the polymerization of styrene. Therefore, it is argued that the G(r) value itself is lower in the mixture. Evidence for this argument is provided by the lower rate of gelling in the mixture. This protection of rubber by energy transfer to styrene is an important example since in only one previous case has experimental evidence been provided to exclude an alternative radical mechanism. By polymerization in the presence of crosslinked rubber, uncombined polystyrene could be readily partitioned into the sol fraction by equilibration of the gross polymer in benzene.more » About 15% of the polystyrene was free. Hexachloroethane was chosen as an example of an additive with a high G (radical) value. As would be expected, it increases the rate of polymerization but does not lead to a correspondingly large amount of free polystyrene (about 23%). Graft polymer formation from styrene and methyl methacrylate is compared and attention is drawn to the importance of the formation and subsequent reactions of initially nonpolymeric radicals in determining the proportion of free plastomer. (auth)« less

Ultrasonic Oscillations Effect on Extrusion Processing, Structure, and Properties of Blends of Propylene Based Plastomer and Ethylene/1-Octene Copolymer:

Abstract: The effects of ultrasonic oscillations on extrusion processing, phase morphology, and compatibility as well as mechanical properties for blends of propylene based plastomer (DP) and ethylene/1-octe...