The trade name of polymethylmethacrylate is _____ 8. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. 3. 4.    6.2  Recycling of PVC Elastomers can be formed in the same way as thermoplastics. 21. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. The recycled flooring can be used in the manufacture of new flooring or to produce traffic management products such as traffic cones and road sign bases. Low Phthalates: Low molecular weight (LMW) phthalates contain eight or less carbon atoms in their chemical backbone. Acrosss the world, the PVC industry has invested heavily to develop sophisticated recycling schemes to ensure that large amounts of PVC can be reused in a new generation of advanced energy efficient, sustainable products. Question 21. Contents 1 Production 1.1 Raw Materials 1.2 Bi-Products 2 Physical Properties 2.1 Resistance to Chemicals 3 PVC and Additives 3.1 Functional Additives 3.11 Heat Stablisers 3.12 Lucricants 3.13 Plasticisers 3.2 Optional Additives 4 Benefits of PVC 5 Applications 5.1 Construction … In creating VinylPlus, the industry has chosen to work in an open process of extensive stakeholder dialogue, including private companies, NGOs, regulators, politicians and users of PVC. Thermoset Curing Process Thermoset plastics contain polymers that cross-link together during the curing process to form an irreversible chemical bond. PVC (polyvinyl chloride) is a thermoplastic and is used for making toys, chappals, etc. Some examples of Thermoplastics are – Polythene and PVC. Polymers are This quiz is incomplete! Ask your question. Give one example of each. The essential raw materials for PVC are derived from salt and oil. • Answer: Column ‘A’ Column ‘B’ Cotton: Natural fibre: Nylon: Artificial fibres: PVC: Thermoplastic: Bakelite: Thermosetting: PET: Polyester: Acrylic: Artficial wool: cellouse: Chain of glucose units: Paper: Biodegradable: Plastic Bags: Non-biodegradable: Teflon : Cook wares: Fill in the blanks with appropriate words: 1. The cross-linking process eliminates the risk of the product remelting when heat is applied, making thermosetting ideal for high-heat applications such as electronics and appliances. This discussion on Which of the following is an example of thermosetting plastic?a)Bakeliteb)PVCc)Polyethylened)No option is correct.Correct answer is option 'A'. Answer: (False) Correct statement: It is good to wear clothes made of fibres while cooking. Some competing materials claim environmental and sustainability advantages over PVC – this is usually based either on myths about the environmental impact of PVC or unjustifiably biased opinions about the competing materials. Some examples of Thermosetting plastics are – Bakelite and Melamine. Can be deformed a large amount when a force is applied and can return to their original shape when released. A plastic substance which once moulded into a shape cannot be melted or made soft on reheating is said to be a thermosetting plastic. (a) Melamine (b) Polythene (c) PVC (d) Nylon Soln: Answer is (a) Melamine Explanation: Thermosetting plastics when moulded once can not be softened by heating. Independent research by Mavel Consultants has shown that the typical cost of using alternative materials is in a range 20-100% higher per component. Choose the correct answer: Example of thermosetting plastic is . This process is called compounding. These include: DINP, DIDP, DPHP, DIUP and DTDP. PVC cables do not harden and crack over time and find use in many applications from telecommunications to electric blankets. The most commonly and widely used nitrogenous fertilizer in Pakistan is: a) Nitrolin b) Urea c) Ammonium Sulphate d) Ammonium Nitrate … PVC (polyvinylchloride) -a cheaper plastic used for window frames and pipes. Window and door profiles, conservatories and atria, Power, data and telecoms wiring and cables, Roofing and ceiling systems and membranes. PVC and polyethylene are examples of thermoplastics. Thermoplastics become moldable above a specific temperature and then return back to a solid when cooled. PVC has been used for hundreds of life-saving and healthcare products for almost 50 years being used in surgery, pharmaceuticals, drug delivery and medical packaging due to its unrivalled performance characteristics and cost-efficiency. Thermosetting Plastics:There are some plastics which when moulded once cannot be … These are used for manufacturing toys, combs, cargrills and various types of containers. They are easily molded and extruded into films, fibers and packaging. Thermoplasticis a plastic which gets deformed easily on heating and can be bent easily e.g., Polythene and PVC. In Blown Film Manufacturing. True or False: Thermosetting plastics can be reheated and formed into new materials. Urea is an excellent nitrogenous direr which contains nitrogen about: a) 36% b) 47% c) 80 % d) 60% 4. The report, published June 2004, showed PVC products to be comparable to alternatives in their environmental impact. There are many definitions of Sustainability and Sustainable Development, but it can best be defined by the three main pillars of sustainability; social, economic and environmental. Urea is an excellent nitrogenous direr which contains nitrogen about: a) 36% b) 47% c) 80 % d) 60% 4. B. Thermoplastics and thermosetting plastics. PVC has chlorine atoms, meaning PVCs can have dipole-dipole forces . Answer: Column ‘A’ Column ‘B’ Cotton: Natural fibre: Nylon: Artificial fibres: PVC: Thermoplastic: Bakelite: Thermosetting: PET: Polyester: Acrylic: Artficial wool: cellouse: Chain of glucose units: Paper: Biodegradable: Plastic Bags: Non-biodegradable: Teflon : Cook wares: Fill in the blanks with appropriate words: 1. We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. 5. Synthetic anmol8c anmol8c 09.09.2020 Science Primary School +5 pts. Common Uses for Thermoset Plastics.    1.2  Bi-Products Play this game to review English. Volksparkstadion roof, Hamburg. Examples are bakelite and melamine. Basil Hamed. Question 4. Answer 1 Cut the PVC coating in a manner that the die will remove the coating in small pieces.    3.1 Functional Additives "Artificial skin" in emergency burns treatment, Containers for intravenous solution giving sets, Container for urine continence and ostomy products, Blister and dosage packs for pharmaceuticals and medicines, Instrument panels and associated mouldings. Categorise the materials of the following products … Give some examples of thermoplastics. Bakelite is a thermosetting plastic and is used for making electrical switches, handles of various utensils, etc. Require heat to make them formable and when cooled they maintain the shape they were formed in to. 5. Question 3. PVC can be plasticised to make it flexible for use in flooring and medical products. Its compatibility with additives allows for the possible addition of flame retardants although PVC is intrinsically fire retardant because of the presence of chlorine in the polymer matrix. 2 Physical Properties Chlorine is used in the manufacture of life-saving medication, indeed 85% of all pharmaceuticals. Give some examples of thermosetting plastics. The actual PVC polymer content in some flooring applications can be as low as 25% by mass, the remainder accounted for by additives. The BPF has a dedicated Additives Group, as well as a Masterbatch and Technical compounds Group. The material now accounts for about 20% of all plastic manufactured world-wide, second only to polyethlene. External lubricants can reduce friction between the PVC and the processing equipment, whereas internal lubricants work on the PVC granules. Cross linked chain. Question 15. Give examples which indicate that nylon fibres are very strong. 2. True or False: A primary package is defined as the packaging that makes a product a sell-able unit. Before PVC can be made into products, it has to be combined with a range of special additives. Typical example of PVC construction products include: Unplasticised PVC is one of the stiffest polymers at normal ambient temperature and shows little deterioration after many years in service. Answer 21. 3.11 Heat stabilisers  Thermoplastic polymers have hydrogen bonds, dipole-dipole bonds or weak dispersion forces between chains. Log in. Some examples of sporting venues using PVC for their roopfing membranes are shown below. PVC takes less non-renewable fossil fuel to make than any other commodity plastic because unlike other thermoplastics which are entirely derived from oil, PVC is manufactured from two starting materials; 57% of the molecular weight derived from common salt, 43% derived from hyrdocarbon feedstocks (increasingly ethylene from sugar crops is also being used for PVC production as an alternative to ethylene from oil or natural gas), There are over 50 quadrillion tonnes of salt exist dissolved in the sea, with over 200billion tonnes of salt available underground - reserves of this material are clearly abundant, Ethylene from oil equates to 0.3% of annual oil usage, but increasingly etheylene from sugar crops is also being used for PVC production. Its good impact strength and weatherproof attributes make it ideal for construction products. (b) Write down the structure of monomer and… Answer 21. Give one example of each. Thermoplastics can soften upon heating and return to their original form on cooling. The terms thermoplastic and thermoset stand for how a material is or can be processed under a changed temperature [1]. True False 39. 7. 3.12 Lubricants Five key challenges have been identified as priorities according to The Natural Step system conditions for a sustainable society: The Natural Step Framework is an internationally recognised method for sustainability planning that integrates the science of sustainability with business decision-making. The Recofloor scheme, managed by Axion Consulting Ltd, provides a mechanism for waste vinyl flooring to be collected and recycled. Another way to prevent getting this page in the future is to use Privacy Pass. Contents Polyvinyl chloride (PVC) is considered a thermoplastic. Plastic Bags: Cook wares: Teflon: Thermosetting: Answer. Pencil or bevel cut the PVC coating at the end of the conduit. PVC is a versatile material that offers many possible applications, these include; window frames, drainage pipe, water service pipe, medical devices, blood storage bags, cable and wire insulation, resilient flooring, roofing membranes, stationary, automotive interiors and seat coverings, fashion and footwear, packaging, cling film, credit cards, vinyl records, synthetic leather and other coated fabrics. Answer: Polyvinyl Chloride. Whether cotton cloth a … performance sports surfaces, sports equipment, clothing, protective barriers, matting, wiring and piping infrastructure. Typical examples of PVC healthcare products include: Flexible PVC is used to make blood storage bags, and in fact is the only material approved by the European Pharmacopoeia for this purpose. Maximum thermoplastics can be recycled. The main physical difference is how they respond to high temperatures. A) true B) false 18. Explain why the following are made of thermosetting plastics: (a) Saucepan handles (b) Electric plugs/switches/plug boards 6. Automotive applications: Instrument panels and associated mouldings, interior door panels and pockets, sun visors, seat coverings, headlining, seals, mud flaps, underbody coating, floor coverings, exterior side moulding and protective strips and anti-stone damage protection. Rubber. Gottlieb Daimler Stadion roof, Stuttgart. These include, DEHP, DBP, DIBP and BBP. Some examples are bakelite, melamine, formica, etc. PVC (polyvinylchloride) -a cheaper plastic used for window frames and pipes. Answer: True. Hence these plastics cannot be reprocessed and they can maintain their shape and size even at very high temperatures. It is good to wear clothes made of synthetic fibres while cooking. : Elastomers can be formed in the same way as thermosetting plastics. © Copyright British Plastics Federation 2020. ; window frames, drainage pipe, water service pipe, medical devices, blood storage bags, cable and wire insulation, resilient flooring, roofing membranes, stationary, automotive interiors and seat coverings, fashion and footwear, packaging, cling film, credit cards, vinyl records, synthetic leather and other coated fabrics. We will discuss engineering economics in Chapter 20. It is good to wear clothes made of synthetic fibres while cooking. The choice of heat stabiliser depends on a number of factors including the technical requirements of the PVC product, regulatory approval requirements and cost. On the other hand, thermosetting plastics cannot be bent once moulded. These are used for manufacturing toys, combs, cargrills and various types of containers. PVC (polyvinylchloride) -a cheaper plastic used for window frames and pipes. PVC has excellent electrical insulation properties, making it ideal for cabling applications. Play this game to review English.    5.3 Electronics Which is a thermosetting plastic? Further information on PVC-U windows can be found via our Windows Group homepage, www.bpfwindowsgroup.co.uk. 2) Thermoplastics can be bent easily. Synthetic Polymers are This quiz is incomplete! Examples of thermoplastics that are common in engineering include: ABS (acrylonitrile butadiene styrene)- stiff and light, used in vehicle bodywork . In 1-2 sentences, please explain one of the approaches to solving the water solubility problem of packaging liquids in paper from the article "Paper is Pressing Forward." Due to its properties it reprocesses well and can be recycled into second (or third life) applications with ease. Question 14. Cape Town World Cup 2010 Stadium. The most commonly used plasticisers are phthalates which can be divided into two distinct groups with very different applications and classifications; LSR TPE. Other examples of PVC healthcare products: "Artificial skin" in emergency burns treatment, blood and plasma transfusion sets, blood vessels for artificial kidneys, catheters, blood bags, containers for intravenous solution giving sets, container for urine continence and ostomy products, endotracheal tubing, feeding and pressure monitoring tubing, inhalation masks, surgical and examination gloves, shatter-proof bottles and jars, mattress and bedding covers and blister and dosage packs for pharmaceuticals and medicines. : Elastomers can be formed in the same way as thermosetting plastics. 5 true 6 false‐Material is melted down and reused, something not possible with thermosetting plastics.    1.1  Raw Materials Decide whether the following statements about thermosetting plastics are true or false. 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