Plastic Cellular

Cellular ebonite Cellular phones Cellular plastics Cellular polyethylene Cellular polymers... 

Chemically foamed plastic Cellular plastic whereby the materials structure is formed by gases generated from the chemical reaction between its constituents. 

Mechanically foamed plastic Cellular plastic whose structure is fabricated by physically incorporated gases. 

Other. Laminated plastic (industrial laminate), sandwich molding, filled plastic, cellular plastic, glass reinforced plastic (GRP), carbon fiber reinforced plastic (CFRP). 

Plastic foams can be called expanded plastics, cellular plastics or foamed plastics, and include both thermoplastic and thermosetting plastics. 

This is a new monthly newsletter bridging the gap between polymer research and the practical applications of high performance plastics. Its scope includes reinforced plastics, engineering plastics, cellular plastics, and other polymers produced for heavy-duty or other special applications. Subscriptions are available from Elsevier Science Inc., 655 Avenue of the Americas, New York, N.Y. 10010. 

A specimen may be in the form of pellets, powder, sheet, film, plastic cellular, or composite materials, with a specimen weight of 3.0 0.2 g. The ASTM procedure describes in detail cutting or folding sheet or film materials and conditioning test specimens. 

Broadly stated, the scope of this book is the physical testing of polymers. Polymers have been taken to include rubbers, plastics, cellular materials, composites, textiles, and... 

The measurement of compressive properties of plastics is covered by ISO 604 [44]. Unlike with the tensile test a single document is able to cover a wide range of materials, since test geometries and other conditions tend to be less variable between types of plastic than is the case for tensile testing. Nevertheless, there arc types of materials that the standard does not purport to cover, and these include textile reinforced plastics, cellular materials, and sandwich constructions involving cellular materials. 

Included in the horizontal tests is the horizontal burn (HB) test. This takes place on solid polymers such as plastics. Cellular elastomers are evaluated according to the horizontal foam (HE) test. Horizontal burn foam (HBF) is the minimal rating assigned in this test, followed by horizontal foam-2 (HF-2) and horizontal foam-1 (HF-1) (the most stringent). 

The act of foaming a plastic material results in products with a wide range of densities. These materials are often termed cellular plastics. Cellular plastics can exist in two basic structures closed-cell or open-ceU. Closed-cell materials have individual voids or cells that are completely enclosed by plastics, and gas transport takes place by diffusion through the cell walls. In contrast, open-ceU foams have cells that are interconnected, and fluids may pass easily between the cells. The two structures may exist together in a material so that it may be a combination of open and closed cells. 

See also blowing agent foamed plastic cellular plastic. 

Foamed plastics CELLULAR MATERIALS Britain 1,140,146 1969 Imperial Chemical... 

The test specimen used in the experiment must be dry since the moisture content of some materials alters the oxygen index. Four different types of specimens are specified. They are physically self-supporting plastics, flexible plastics, cellular... 

Foamed plastics (cellular plastics) Plastic with numerous cells dispersed throughout its mass. Cells are formed by a blowing agent or by the reaction of the constituents. 

---