The Effect of Modifying Agents on the Mechanical Properties of Straw Flour/Waste Plastic Composite Materials

Abstract

Though there has been a large number of studies concerning the modification of wood plastic composite materials, there is still more to be done. This report aims to study the effect of the coupling agents (PP-g-MAH, silane, titanate) and compatibilizer(SBS) on the mechanical properties of straw flour/waste plastic composites. Straw flour, waste plastic, modifying agents and other additives were mixed evenly in a high speed mixing machine. And the mixed materials were compounded into the pelllets using the twin-screw extruder. Then the test specimens were prepared by the injection molding. The influence of 4% coupling agent (PP-g-MAH, silane, titanate) on the mechanical properties of straw flour/waste plastic composites was researched, and the most suitable coupling agent to the composites was obtained. In order to increase the toughness of the composite materials and to furthermore improve the comprehensive mechanical properties, the WPCs with different contents styrene butadiene styrene (SBS) were investigated. The experimental results showed that the coupling agent PP-g-MAH and the content was 4%, the mechanical properties of the composite materials were better; when SBS content was 5%, the maximum increases of tensile strength, flexural strength and impact strength of SBS modified WPCs were by 14.34%, 20.75%, 34.38% compared to those of neat WPCs respectively.

Ultrasensitive and stable all graphene field‐effect transistor‐based Hg2+ sensor constructed by using different covalently bonded RGO films assembled by different conjugate linking molecules

“…As for composite materials, the coupling agent acts as a molecular bridge that not only plays a coupling role, but also influences its performance in various aspects 36–40 . Therefore, the electrical properties of both films were investigated.…”

Plastic Waste Management Strategies and Their Environmental Aspects: A Scientometric Analysis and Comprehensive Review

“…Panels made using a mixture of macadamia shells and automotive PW have exhibited more strength and resistance to fire than panels made entirely of automotive PW [77]. Similarly, it was discovered that when PW was combined with straw flour, its mechanical characteristics greatly improved [78]. It was also reported that the field of PW and woody biomass composites is still in its initial stages and needs additional investigations before its long-term viability can be determined.…”

Design and Test of a Sliding Cutting Device for the Plastic Mulch Waste

“…Residual film and straw are the main components of mechanically recovered waste and have a wide range of applications. Film is the main component that can be recycled for granulation [20,21]; straw is the second main component that can be used to adjust the carbon-nitrogen ratio of compost and to produce animal feed [22,23]; the waste mixture of the two can be used to produce composite panels for the construction and decoration industries [24][25][26]. However, all of the above resource recovery methods require that the mixed material is first shredded, particularly the knotted feature, to ensure that the subsequent process can be carried out smoothly.…”