Tag: thermoplastic resin

Polymers have for very long been a fundamental portion of our everyday lives so much so that examples can be found almost ubiquitously. We are apt to have an impression leading us to believe that polymers are only plastics employed for packaging, in household objects and for making fibres, however, this is only the tip with the iceberg.

Polymers are widely-used in many applications you do not have thought much about. This web site enlightens you concerning the story behind polymers and the way it’s got evolved since that time for everyone several functions across a number of industries.
Origin of polymer science
Humans have taken benefit from the versatility of polymers since way back when as oils, tars, resins and gums. However, it had not been prior to the industrial revolution how the polymer industry began to develop. In reality, the birth of polymer science could be traced to the mid-nineteenth century. Within the 1830s, Charles Goodyear developed the vulcanization procedure that transformed the sticky latex of natural rubber in to a useful elastomer for tire use. In 1909, Leo Hendrik Baekeland developed a resin from two quite normal chemicals, phenol and formaldehyde. The response between these two chemicals paved the way to add mass to a resin, called Bakelite, named after him. It had been this resin that served being a harbinger to a lot of with the common polymers that people use today. The phrase “polymer” hails from the Greek roots “poly” and “mer,” which put together means “many parts.” Polymeric substances are comprised of countless chemical units called monomers, that happen to be gathered into large molecular chains comprising a huge number of atoms.
Classification of polymers
On such basis as their origin, pmma plastic can be classified as natural or synthetic polymers. Natural polymers are the ones polymers that occur in nature knowning that that happen to be isolated from plant and animal resources. Starch, cellulose, proteins, natural rubber etc. are a few types of natural polymers. Though they may be processed to obtain the end result, since basic material comes from a natural source, these polymers are called as natural polymers. Natural rubber received from tree latex it’s essentially a polymer made out of isoprene units which has a tiny proportion of impurities inside it.
With this context, biopolymers will also be significant. There exists huge variety of biopolymers including polysaccharides, polyesters, and polyamides. They are naturally made by microorganisms. The genetic manipulation of microorganisms makes means for enormous risk of the biotechnological output of biopolymers with tailored properties ideal for high-value medical application including tissue engineering and drug delivery.
Synthetic polymers, for their name indicates, are synthesized within the laboratory or factory through a group of chemical reactions from low molecular weight compounds. From your functional viewpoint they can be classified into four main categories: thermoplastics, thermosets, elastomers and synthetic fibres. Polymethyl methacrylate (PMMA) is a such thermoplastic made by the polymerization with the monomer, methyl methacrylate (MMA). PMMA is usually generally known as acrylic plastic and lends its properties into a number of consumer product applications. Being both a thermoplastic and transparent plastic, acrylic is utilized extensively within the automotive industry in trunk release handles, master cylinder, and dashboard lighting. Consumer items that have a constituent element of acrylic plastic include aquariums, motorcycle helmet lenses, paint, furniture, picture framing, and umbrella clamps, and the like.
Some of the other synthetic polymers that people used in us include Nylons, employed in fabrics and textiles, Teflon, employed in non-stick pans and Polyvinyl Chloride, employed in pipes.
As being a leading manufacturer of SUMIPEX® PMMA polymer, Sumitomo Chemical is satisfied to help you out in understanding its properties being a synthetic polymer. To understand more, contact us here.
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Polycarbonate had earned the tag because the most suitable material for usage from the automotive industry. However, these days, Polymethyl Methacrylate, the PMMA polymer or commonly known acrylic plastic, has efficiently risen for the growing demands from the automotive industry in replacing polycarbonate for the best important use within the, namely, automotive glazing.

Long established for usage in a number of vehicle applications such as decorative trim, ambient lighting and door entry strips, automotive glazing is one kind of those fields that offer the best growth prospect of PMMA.
Related key options that come with acrylic plastic that make it well suited for the entire process of automotive glazing are discussed below.
Light weight
To produce a comparison over a standard level, PMMA is half the extra weight and more transparent than glass, thereby providing really clear visibility during the case of fluctuating and unstable temperatures. Owing to its molecular structure, thermoformed polymer resin are used almost only for car window glazing where all of the necessary requirements for light-weight materials which are safe, an easy task to process and perform in all of the weathers are met.
High on Scratch Resistance
Another significant requirement for glazing is scratch resistance. Standard PMMA already has the highest surface hardness of all thermoplastics even though uncoated. However, for automotive glazing, you’ll find stringent conditions being fulfilled to satisfy the perfect state of scratch resistance. The effective use of a coating thus remains mandatory. Given that PMMA is intrinsically UV and also weathering-resistant, a single-step coating is successful. In comparison, thermoplastics who have low resistance to weathering demand a two-step coating system. This ends in relatively expense for coating.
New design possibilities
PMMA glazing is Forty to fifty percent lighter than conventional glass, which piques the eye of automobile manufacturers. With the advantages being immediately obvious, PMMA has become considered the best fit for automotive glazing. Weight savings apart, the transparency of acrylic plastic along with its very high weathering resistance, pleasant acoustic properties, and exceptional form ability allow freedom enabling entirely new design possibilities.
Less negative feelings birefringence
PMMA exhibits very little stress birefringence and this works as a major benefit over other thermoplastics such as polycarbonate, which was primarily used by glazing previously. Weighed against traditional materials such as polycarbonate, moulded PMMA, provides a distinct possibility of functional integration – reducing recess depth and assembly costs.
Environment-friendly
The brand new goal from the automotive industry is to produce clean low fuel consumption vehicles. Because of the awareness and the dependence on eco-friendly initiatives in today’s scheme of things, PMMA works as a perfect replacement for glass from the automotive glazing segment. As vehicle manufacturers push the boundaries of design, so too is automotive glazing evolving.
SUMIPEX® PMMA polymer offers characteristics that fulfill the latest challenges from the transportation sector. It’s a monumental challenge for car makers that are looking for to adjust to recent environmental requirements and therefore are thinking of alternatives that reduce greenhouse gas and save fuel. Oahu is the perfect partner in this movement given it makes cars lighter.
Like a leading manufacturer of SUMIPEX® PMMA polymer, Sumitomo Chemical is satisfied to help you to understand its properties and how it ideal to automotive glazing.
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Just how do a liquid containing just 5 carbon atoms, 2 oxygen atoms and 8 hydrogen atoms provide for durable purposes where thermal resistance, electrical resistance and mechanical strength is of prime importance? The result lies in a word – “Polymerisation”.
Through this infographic, we trace the journey of MMA (Methyl Methacrylate), a liquid monomer that is polymerised to result in PMMA polymer (Polymethyl Methacrylate), and it is various grades.

MMA may be polymerised to PMMA through solution polymerisation, emulsion polymerisation and bulk polymerisation techniques. All these reactions take place in a good a catalyst. The resulting methyl methacrylate resin may be modified to several shapes, sizes and forms based on the additives.
The varied grades of SUMIPEX®, the Polymethyl methacrylate resin created by Sumitomo Chemical, which can be obtained on adding additives are:
• ‘High Impact Grade of SUMIPEX® PMMA’ – Properties like high flow and good heat resistance make this suited to manufacturing extruded sheets/ pipes/ rods, construction materials, automotive parts and industrial applications
• ‘Extrusion Grade of SUMIPEX® PMMA’ – Good extrusion molding characteristics, high surface hardness, superb weatherability and excellent chemical resistance will be the properties with this grade that favour its utilization in extruded sheets/ pipes/ rods.
• ‘Heat Resistant Grades of SUMIPEX® PMMA’ – Excellent heat resistance, excellent surface hardness and mechanical strength enables the application of this grade in automotive parts for example tail lamp, instrument cluster, optical Lens, general lamps, etc.
• ‘Optical Grades of SUMIPEX® PMMA’ – With excellent heat resistance and flow properties, the optical grades with extremely low quantities of foreign contaminants can be used light Guide panels and optical lenses.
• ‘High Flow Grade of SUMIPEX® PMMA’- With characteristics like high-flow during injection molding and good moldability, this grade is recommended for intricate parts and thin-wall parts molding for example watch and clock cover, lighting cover, name plate, house ware, etc.
• ‘General Purpose Grades of SUMIPEX® PMMA’ – General Purpose Grades determine contrast between normal and optical grades/special grades. General Purpose Grades like MH, LG, LG2, etc. also come under “Extrusion Grade”, “Heat Resistance Grade” and “High Flow Grade”. With balanced properties for example heat resistance and mechanical strength, this grade is acceptable in making great deal of products for example house ware, stationery, telephone buttons, piano keys, electrical accessories, ornaments, etc.
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