Effects of the Functional Compound on the Properties of Composite Tape Yarns

Abstract

While the functional compound Polycom JB 7100 is often introduced into polyolefins as a modifier, processing aid and bonding agent, little is known about its influence upon the basic structure and mechanical properties of composite tape yarns. Polycom JB 7100 is a master bath of inorganic materials and polyolefins. To show the effects of different amounts (0 -6 wt%) of this additive in polypropylene (PP)-based composite tape yarns, experiments were made without changes to other additive portions and at constant process parameters. The linear composition-property relations showing the effects of portions of the variable component on the changes in morphology, geometrical properties and tensile behaviour were obtained. Tape yarns, in which a portion of PP was replaced by the functional compound Polycom JB 7100, had tensile properties about 2 -9% lower than the yarns without this additive, whereas the values of width, thickness and linear density after applications of the additive were about 3 -4% greater if compared with those of the basic sample.

Mechanical Characterisation of Carbon Fibre-Reinforced Plastics with Defined Defects

“…Since the defect was very small in comparison to the sample size, the tensile strength of reference CFRPs and that of CFRPs with a defect the size of 1×1 mm 2 were almost the same for all types. The CFRP produced with a 6×6 mm 2 defect showed less tensile strength than that containing a defect with a size of 1×1 mm 2 . This resulted from the greater size of the defect interrupting adhesion between the fibre and matrix to a greater degree, thus causing delamination.…”

“…Kochan [17] developed CFRPs with defined local defects containing aluminum oxide hollow balls and polystyrol balls for ultrasonic and thermographic nondestructive testing. However, all efforts regarding the production of CFRPs containing local defects have been limited to qualitative and quantitative evaluation by non-destructive testing (NDT), ultrasonic testing, thermographic testing, they offer higher relative specific tensile strength and stiffness as well as a weight reduction of up to 70% compared to steel [1,2]. Different CFRP components currently available on the market are manufactured from textile reinforcing fabrics consisting of carbon fibres built up in layers.…”

The side effects of UV light stabilizer on properties of polypropylene based composite tape yarn

“…Table shows experimental plan for portions of all the components. The ranges of portions in wt % were selected in accordance with established experience and preliminary experimentation …”

“…For instance, the additions of mineral fillers, which are the components of additives for stiffness, dimension stability or whiteness of materials, have an embrittling effect and reduce the impact energy and other mechanical parameters . The particles of rigid filler are applied as toughening agent . There are some studies which show an increase in impact resistance after use of a rigid filler …”

“…Stabilizers as one of the main types of functional additives are widely applied in textile materials and other polymeric products . Light and heat stabilizers can be added to ensure safe processing and protect materials against premature weathering and aging.…”