enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Polycarbonate - Wikipedia

   en.wikipedia.org/wiki/Polycarbonate

   Polycarbonate has a glass transition temperature of about 147 °C (297 °F), [8] so it softens gradually above this point and flows above about 155 °C (311 °F). [9] Tools must be held at high temperatures, generally above 80 °C (176 °F) to make strain-free and stress-free products.

3. Glass-filled polymer - Wikipedia

   en.wikipedia.org/wiki/Glass-filled_polymer

   Glass-filled polymer (or glass-filled plastic), is a mouldable composite material. It comprises short glass fibers in a matrix of a polymer material. It is used to manufacture a wide range of structural components by injection or compression moulding . [ 1 ]

4. Bisphenol A - Wikipedia

   en.wikipedia.org/wiki/Bisphenol_A

   It is used as a high performance alternative to polycarbonate. [49] [55] Bisphenol-A formaldehyde resins are a subset of phenol formaldehyde resins. They are used in the production of high-pressure laminates [49] As a minor component. Polyurethane can incorporate BPA and its derivatives as hard segment chain extenders, particularly in memory ...

5. Plastic extrusion - Wikipedia

   en.wikipedia.org/wiki/Plastic_extrusion

   Plastic extruders are also extensively used to reprocess recycled plastic waste or other raw materials after cleaning, sorting and/or blending. This material is commonly extruded into filaments suitable for chopping into the bead or pellet stock to use as a precursor for further processing.

6. Vandal-resistant switch - Wikipedia

   en.wikipedia.org/wiki/Vandal-resistant_switch

   Vandal-resistant switches are usually protected by the use of robust materials, such as thick stainless steel or heavy-duty plastics. Some tamper-resistant switches are also protected against operation by using other approaches, such as hiding the switches behind a locked or screwed-down door-covered panel, or by requiring a key or passcode ...

7. Sheet moulding compound - Wikipedia

   en.wikipedia.org/wiki/Sheet_moulding_compound

   Sheet moulding compound (SMC) or sheet moulding composite is a ready to mould glass-fibre reinforced polyester material primarily used in compression moulding. [1] The sheet is provided in rolls weighing up to 1000 kg. Alternatively the resin and related materials may be mixed on site when a producer wants greater control over the chemistry and ...

8. Diphenyl carbonate - Wikipedia

   en.wikipedia.org/wiki/Diphenyl_carbonate

   World production capacity of diphenyl carbonate was 254,000 tonnes in 2002, and phosgenation of phenol is the most significant route. [5] Phosgenation of phenol can proceed under various conditions.

9. Low-density polyethylene - Wikipedia

   en.wikipedia.org/wiki/Low-density_polyethylene

   LDPE has SPI resin ID code 4 Schematic of LDPE branching structure. Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene.It was the first grade of polyethylene, produced in 1933 by John C. Swallow and M.W Perrin who were working for Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization. [1]