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2. Rubber toughening - Wikipedia

   en.wikipedia.org/wiki/Rubber_toughening

   Crazing in polymers This is a cartoon representation of failure mechanisms in epoxy resins. The numbers correspond to the following. "(1) shear band formation, (2) fracture of rubber particles, (3) stretching, (4) debonding and (5) tearing of rubber particles, (6) transparticle fracture, (7) debonding of hard particles, (8) crack deflection by hard particles, (9) cavitated rubber particles ...

3. Vulcanization - Wikipedia

   en.wikipedia.org/wiki/Vulcanization

   In ancient Mesoamerican cultures, rubber was used to make balls, sandal soles, elastic bands, and waterproof containers. [4] It was cured using sulfur-rich plant juices, an early form of vulcanization. [5] In the 1830s, Charles Goodyear worked to devise a process for strengthening rubber tires. Tires of the time would become soft and sticky ...

4. Silicone - Wikipedia

   en.wikipedia.org/wiki/Silicone

   Silicone bands also come in bracelet sizes that can be custom embossed with a name or message. Large silicone bands are also sold as utility tie-downs. Formerol is a silicone rubber (marketed as Sugru) used as an arts-and-crafts material, as its plasticity allows it to be molded by hand like modeling clay. It hardens at room temperature and it ...

5. Insulating concrete form - Wikipedia

   en.wikipedia.org/wiki/Insulating_concrete_form

   The first expanded polystyrene ICF Wall forms were developed in the late 1960s with the expiration of the original patent and the advent of modern foam plastics by BASF. [citation needed] Canadian contractor Werner Gregori filed the first patent for a foam concrete form in 1966 with a block "measuring 16 inches high by 48 inches long with a tongue-and-groove interlock, metal ties, and a waffle ...

6. Silicone rubber - Wikipedia

   en.wikipedia.org/wiki/Silicone_rubber

   Silicone rubber is an elastomer (rubber-like material) composed of silicone—itself a polymer—containing silicon together with carbon, hydrogen, and oxygen. Silicone rubbers are widely used in industry, and there are multiple formulations.

7. Sulfur vulcanization - Wikipedia

   en.wikipedia.org/wiki/Sulfur_vulcanization

   Sulfur forms cross-linking bridges between sections of polymer chains which affects the mechanical and electronic properties. [citation needed] Many products are made with vulcanized rubber, including tires, shoe soles, hoses, and conveyor belts. The term vulcanization is derived from Vulcan, the Roman god of fire.

8. Rubber band - Wikipedia

   en.wikipedia.org/wiki/Rubberband

   A rubber band ball is a sphere of rubber bands made by using a knotted single band as a starting point and then wrapping rubber bands around the center until the desired size is achieved. The ball is usually made from 100% rubber bands, but some instructions call for using a marble , [ 16 ] a crumpled piece of paper , or a ping-pong ball [ 17 ...

9. Formwork - Wikipedia

   en.wikipedia.org/wiki/Formwork

   For removable forms, once the concrete has been poured into formwork and has set (or cured), the formwork is struck or stripped to expose the finished concrete. The time between pouring and stripping depends on the job specifications, which include the cure required, and whether the form is supporting any weight; it is usually at least 24 hours ...