Tag: methyl methacrylate resin

5 Logic behind why Acrylic Plastic Can be used For Automotive Glazing

Posted on by Betty Brooks

Polycarbonate had earned the tag because the most suitable material for usage inside the automotive industry. However, these days, Polymethyl Methacrylate, the PMMA polymer or commonly known acrylic plastic, has efficiently risen towards the growing demands with the automotive industry in replacing polycarbonate for the most important use within the industry, namely, automotive glazing.


Long established for usage in a number of vehicle applications like decorative trim, ambient lighting and door entry strips, automotive glazing is just one of those fields that provide 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.
Lightweight
To make a comparison on the standard level, PMMA is half the load and much more transparent than glass, thereby providing magnificent visibility even in true of fluctuating and unstable temperatures. Because of its molecular structure, thermoformed pmma thermoplastic are now used almost just for car window glazing where all of the necessary requirements for light-weight materials which are safe, simple to process and perform in all weathers are met.
High on Scratch Resistance
Another significant dependence on glazing is scratch resistance. Standard PMMA already has got the highest surface hardness of thermoplastics regardless if uncoated. However, for automotive glazing, you’ll find stringent conditions to become fulfilled in order to meet the best condition of scratch resistance. The effective use of a coating is therefore mandatory. Due to the fact PMMA is intrinsically UV as well as weathering-resistant, a single-step coating is effective. In comparison, thermoplastics that have low capacity weathering require a two-step coating system. This brings about relatively high costs for coating.
New design possibilities
PMMA glazing is Forty to fifty percent lighter than conventional glass, which piques the interest of automobile manufacturers. With all the advantages being immediately obvious, PMMA is currently seen as the best fit for automotive glazing. Weight savings apart, the transparency of acrylic plastic in addition to its high weathering resistance, pleasant acoustic properties, and exceptional form ability allow freedom enabling entirely new design possibilities.
Less stress birefringence
PMMA exhibits very little stress birefringence and this serves as a major benefit over other thermoplastics like polycarbonate, which was primarily used for glazing before. Compared with traditional materials like polycarbonate, moulded PMMA, comes with a distinct chance of functional integration – reducing recess depth and assembly costs.
Environment-friendly
The newest goal inside the automotive companies are to build up clean low fuel consumption vehicles. Given the awareness and also the need for eco-friendly initiatives in the present scheme of things, PMMA serves as a perfect replacement for glass inside the automotive glazing segment. As vehicle manufacturers push the bounds of design, so too is automotive glazing evolving.
SUMIPEX® PMMA polymer offers characteristics that meet the latest challenges inside the transportation sector. It’s a monumental challenge for auto makers that want to sit in recent environmental requirements and they are contemplating alternatives that reduce greenhouse gas and save fuel. Oahu is the perfect partner with this movement as it makes cars lighter.
Being a leading manufacturer of SUMIPEX® PMMA polymer, Sumitomo Chemical is satisfied to work with you to understand its properties and the way it ideal to automotive glazing.
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Journey coming from MMA to PMMA – Infographic

Posted on by Betty Brooks

How do a liquid containing just 5 carbon atoms, 2 oxygen atoms and eight hydrogen atoms supply for high quality purposes where thermal resistance, electrical resistance and mechanical strength is of prime importance? A better solution depends on a word – “Polymerisation”.
Through this infographic, we trace your way of MMA (Methyl Methacrylate), a liquid monomer that is polymerised to cause PMMA polymer (Polymethyl Methacrylate), and it is various grades.


MMA can be polymerised to PMMA through solution polymerisation, emulsion polymerisation and bulk polymerisation techniques. Each one of these reactions take place in the use of a catalyst. The resulting pmma can be modified to various shapes, sizes and forms based on the additives.
The different grades of SUMIPEX®, the Polymethyl methacrylate resin manufactured by Sumitomo Chemical, which might be obtained on adding additives are:
• ‘High Impact Grade of SUMIPEX® PMMA’ – Properties like high flow and good heat resistance make this ideal for 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 use within extruded sheets/ pipes/ rods.
• ‘Heat Resistant Grades of SUMIPEX® PMMA’ – Excellent heat resistance, excellent surface hardness and mechanical strength enables using this grade in automotive parts such as 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 are used for 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 mandatory for intricate parts and thin-wall parts molding such as watch and clock cover, lighting cover, name plate, house ware, etc.
• ‘General Purpose Grades of SUMIPEX® PMMA’ – General Purpose Grades determine among normal and optical grades/special grades. General Purpose Grades like MH, LG, LG2, etc. will comw with under “Extrusion Grade”, “Heat Resistance Grade” and “High Flow Grade”. With balanced properties such as heat resistance and mechanical strength, this grade is suitable for making great deal of products such as house ware, stationery, telephone buttons, piano keys, electrical accessories, ornaments, etc.
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