Advantage And Disadvantage Of Plastic

Polypropylene being often used as products with live hinges and outdoor usage, is crucial to learn the limit of how it performs under various circumstances such as extreme temperature or the frequency and speed on how it is being moved. Its breaking force are also affected by those parameters. Hence it is important to study how to maximize the usage of the materials. Experiments include tensile test, Charpy impact test and Shore hardness test.

However, the absence of plastic deformation does not mean that composites are brittle materials like monolithic ceramics. The heterogeneous nature of composites result in complex failure mechanisms which impart toughness. Fiber-reinforced materials have been found to produce durable, reliable structural components in countless applications. The unique characteristic of composite materials, especially anisotropy, require the use of special design

In modern times, there are numerous materials used to make the everyday necessities we need in life such as our phones, clothes, shoes, plastic bags, and many more. However we could narrow the materials down to metal-based products, polymer-based products/ plastics, and cellulose-based products/paper. To narrow things even down further so that we could have an argument, plastic and cellulose could both be used to make the same type of material such as containers for juice, containers for food, chairs, tables and many more. With this, we could now compare if plastic or paper is the better material to make our basic necessities. I would say that plastic would be better because of its durability, energy efficiency in making plastics, and the ability to mold plastic.

Composite materials have been evaluated with a matrix properties unsaturated polyester resin by conducting mechanical testing, including the pressure, compression, hardness and impact resistance.. While wood flour helped add to the balance between the original compression strength reductions up to 3 wt. wood flour and then reduce the strength. The results confirmed that the best promote and 3% by weight of wood flour consider the compression strength

If the polyethyne plastics have a composition of more carbon, it will be able to take more stress with less side effects. The more carbon will make the plastics stronger

Carboxyl- or amine-terminated copolymers of butadiene and acrylonitrile (CTBN and ATBN, respectively) are soluble in most liquid epoxies. The end groups react with the epoxy matrix during the curing process and the rubber separates to form discrete particles. Increasing the fracture resistance of epoxies with CBTN or ABTN rubber particles does have deficiencies. Incorporation of a low-Tg component often reduces the glass transition temperature of the composite material [12]. Similarly, incomplete separation of the rubber during cure may plasticize the epoxy network [14, 15]. Both the tensile modulus and yield strength of epoxies may be reduced upon rubber modification [16]. Sultan and McGarry [17] attributed the toughening effect mainly to the crazing of the epoxy matrix. Bascom et al.[12] accredited the high toughness values of CTBN modified epoxy to an increase in the plastic zone size. A rubber stretching and tearing mechanism was proposed by Kunz et al. [18] as the major toughening mechanism for rubber modified plastics (also known as

In times, metals were replaced by polymers for a few applications like reducing the weight of few parts. But in the present days new classes of engineering plastics are replacing metals at a higher level as they can be customized. Significant productivity improvement is possible by using polymers. There is a higher product performance level, cost reduction, efficiency in manufacturing, durability and enhancement of aesthetics which are all achieved simultaneously now-a-days using

Design technicians and engineers love to use carbon fibre in manufacturing as it has many desirable properties. First of all is its strength. Carbon fibre is five times stronger than steel and is twice as stiff [2]. The strands of carbon are lined up parallel to each other when producing a sheet. For maximum results in strength, the fibres must be parallel with the forces that will act upon that element, this is to make sure it can withstand the forces going through the object when in use.

Composite materials and structures are particularly attractive for aerospace applications due to their high stiffness, high strength and low weight properties. The use of such structures allows for an overall aircraft mass reduction, reduced fuel consumption and increased service life resulting in a reduction in aircraft operating costs.

Lignocellulosic (plant) fiber reinforced with PLA have been extensively studied and further attracted considerably in polymer composite field [2]. High strength to weight ratio, less cost, low density, high modulus, abundant availability, good wear/abrasion resistance and its biodegradability [5] are the main advantages of lignocellulosic fiber.These properties allow them to compete with synthetic ones and it is expected to considerably lower the overall cost of materials [2]. Extensive literature survey indicate that PLA reinforced with commercially available lignocellulosic fiber such as banana, sisal, cotton, flax, ramie and

Did you know that plastic bags remain noxious even after it breaks down? Billions of plastic bags are given out daily to consumers by the stores to carry their purchases in. They are additionally light, water resistant, and easy to carry in. Most of the plastic bags are made out from High Density Polyethylene (HDPE), and these bags end up in landfills or waterways after using them (Plastic Rubbish, 2008). In addition, these plastic bags are non-biodegradable. There has been a new creation of plastic bags that are made from chicken feathers (Greene, 2015). Therefore, plastic bags would be able be to break down when disposal. Plastic bags should be limited due to their high negative impact on the environment that leads to pollution, danger to wildlife, and health problems.

Cost is another factor; polymer fibers have a lower cost per optical area unit than glass, in part due to the easier manufacturing process. High quality PMMA systems rely on a fusion process to construct the common end, hence dispensing with the use of epoxy potting compounds. In all instances where the use of many fibers or light points is prescribed polymer systems are a much better option. Another point to bear in mind is the weight factor: glass fibers are heavier than polymer, a fact that may be critical in some applications, such as automotive and aircraft

Epoxies are widely used in primary construction composite materials for high strength performance, adhesives, casting compounds, sealants, varnishes and paints as well as laminating resins. Epoxies generally have higher values of fracture toughness than polyesters and vinyl-esters which may result in superior fatigue performance of the laminates. There are two types of epoxies one with bisophenol-A and another is novolac type compositions are commercially available. These resin systems are curable both at room and high temperatures. Epoxies are most suitable to prepreging, filament winding and laminating

The purpose of this study is to explore how some of the different composite materials are produced and how they are used as aircraft parts. The study seeks to answer the research question, why is the use of composite materials so attractive to aircraft designers and are the benefits of using composites worth trying to integrate them into existing aircraft designs? The goal is to analyze the many different uses of composites as aircraft parts and determine whether or not their use is beneficial.

People could get more benefits from plastic but every time people used it, they contribute in the destruction of the environment. Plastic material was made up of synthetic organic solids that are moldable. Due to plastic material relatively low cost, many manufacturers patronizing it because of expanding range of their products. Manufacturers displaced many materials that are used in the development of their products such as paper, wood, glass and water. Plastic was also used in packaging which is highly contributes in the development of the country. Even though people get benefits from plastic it has also many disadvantage. Plastic material is very harmful to health of humans and animals, it contributes in water pollution that can affect