Properties of polypropylene

The present research aims to investigate the influence of the ratio of reinforced concrete layer height to total height (h/H) on the mechanical properties of functionally graded concrete (FGC) containing fly ash (Fa) and polypropylene (PP) fiber.

14p vifilm 24-09-2024 2 1   Download

This study aims to investigate the long-term mechanical properties and durability of cementitious composites (CC) with low polypropylene (PP) fiber content and local river sand. The CC samples were prepared with different water-to-binder (w/b) ratios (0.20, 0.25, and 0.3), low PP fiber content (0.6% by mass of binder), locally available river sand, and fly ash (FA) sourced in the Mekong Delta region, corresponding to the mixture name WB20, WB25, and WB30, respectively.

12p vifaye 20-09-2024 2 1   Download

In this study, the effect of alkaline-treated spent coffee grounds and compatibilizer on the mechanical properties of bio-composite based on polypropylene (PP) matrix was investigated. After alkaline treatment, the surface of spent coffee grounds became rougher; hence the PP matrix could better adsorb and encapsulate the treated coffee grounds compared with that of untreated ones. T

6p dianmotminh02 03-05-2024 4 2   Download

To achieve the aim, the first objective is preliminary experiments on preparation of polypropylene blends with silicone elastomer masterbatch and characterize by analysis of mass composition, mechanical properties, and dynamic mechanical properties to investigate any improvement of properties. The silicone elastomer masterbatch will then be substituted with propylene-maleic anhydride graft copolymer waxes or other compatibilizers.

147p runthenight05 01-03-2023 7 3   Download

The main focus of this research is the composite comparison of steel fiber, polypropylene fiber and basalt fiber as it is a new category of hybrid fiber reinforcement in high performance high volume flyash concrete. Also many other researchers have studied incorporating individual fibers in high volume flyash concrete to improve the mechanical properties.

165p runthenight04 02-02-2023 5 2   Download

To study relation of molecular structural changing between polypropylene microcomposite system and the particle fillers with varies phase interactions by using solid-state NMR(ssNMR) spectra.Therein,emphasizing the molecular flexibility on mechanical properties of materials.

22p capheviahe27 23-02-2021 10 2   Download

Polypropylene/ maleic anhydride /organic montmorillonite nanocomposites (PP/ MA/ Org-MMT) have been prepared via direct melt intercalation in an internal mixer. Maleic anhydride (MA) was used as a compatibilizer to improve the dispersability of the clay. The structures of nanocomposites have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Mechanical properties and thermal stability were determined by tensile analysis and thermogravimetric analysis (TGA), respectively.

8p 12120609 01-06-2020 19 2   Download

The Elastomeric Alloy (EA) materials based on polypropylene (PP) and Vietnam waste Rubber Powder (RP) has been prepared in internal mixer of Haake in melting state with peroxide initiator. Dynamically stabilizing process at presence of radical donor and acceptor systems has leaded to form chemical bonds on the surface between two phases of surspending rubber powder and PP matrix and then to form intermediate phase surrounding Rubber Particles and making EA higher dense than that of materials by simple mixing RP and PP without networking.

5p uocvong03 24-09-2015 32 6   Download

The effect of maleic anhydride grafted polypropylene (MAPP) on mechanical properties of bamboo fiber mat reinforced polypropylene composites (BMRPC) was studied. The results showed that mechanical properties of the composite depend on the amount of MAPP and those attained maximum values at 6 % MAPP. The effects of bamboo fiber mat contents on mechanical properties were also investigated. Maximum values for the tensile, flexural and impact strengths of BMRPC were obtained at a bamboo fiber mat content 45% (by weight).

8p uocvong01 24-09-2015 132 3   Download

The preparation and mechanical properties of bamboo - glass fiber mat reinforced polyropylene hybrid composite (BGMRPC) were investigated. The results showed that properies of the composite depend on the amount of glass fiber mat and the hybrid method. Replacing 13.5% of bamboo fiber mat by glass fiber mat, the tensile, flexural and impact strengths of BGMRPC were increased by 33%, 28% and 79% respectively comparing to bamboo fiber mat reinforced polypropylene composite (BMRPC). The moisture absorption of BMRPC and BGMRPC was studied and compared.

7p uocvong01 24-09-2015 45 3   Download

Vietnam belongs to the region of tropical climate with high temperature and moisture, especially very high violete radiation exposure. Under these conditions the properties of elastomeric alloys made from waste rubber powder and polypropylene using peroxide as an initiator were messured. Using the dynamic stabilizing method the influence of the composition and the nature of the components on the alloy stability was estimated.

4p uocvong02 24-09-2015 39 2   Download

The surface treatment by physical method of jute fiber using air plasma was investigated. Fiber was treated by the atmospheric plasma with various conditions of power 50W and different treatment times (from 1 min to 7 min). After treatment, the characteristics of fiber changed remarkably and fiber surface observed by SEM analyze showed a better morphology for adhesion. The result showed that tensile strength and Young’s modulus of jute fiber were slightly improved, however there was a remarkable improvement interface adhesion between fibers and polypropylene (PP) resin.

6p uocvong01 24-09-2015 52 6   Download

Silane and NaOH were used to treatment bamboo shoot culm sheath fiber. After treatment, the interfacial shear strength of fiber with MAPP increased by 24% and 30% respectively. Alkali treatment has much effect on bamboo shoot culm sheath fiber than silane treatment. Washing NaOH treatment bamboo fiber with acetic acid was improved IFSS of bamboo fiber and polypropylene (PP) and strength of composite PP reinforced by bamboo fiber.

6p uocvong01 24-09-2015 49 3   Download

This paper presents the results of the effect content of short bamboo fiber prepared by mechanical method and alkaline treatment on mechanical properties of polymer composites (PC) based on polypropylene (PP). With content of 50% in composition, the tensile, the flexible and impact strengths have been increased as 24%, 23% and 40%, respectively in comparison with original PP. Using the prepared bamboo fiber by steam explosion method in stead of mechanical one, the tensile strength of composite increases 16%, mean while the flexible and impact strength have the equivalent value.

5p uocvong01 24-09-2015 86 9   Download