What is syntactic foam made of?

Syntactic foam is a class of material created using pre-formed hollow spheres (commonly made of glass, ceramic, polymer or even metal) bound together with a polymer. The “syntactic” portion refers to the ordered structure provided by the hollow spheres.

How strong is syntactic foam?

These materials include glass microspheres dispersed in a cement paste matrix to achieve a closed cell foam structure, instead of a metallic or a polymeric matrix. The resulting composites are reported to achieve compressive strength values larger than 30 MPa while maintaining densities lower than 1.2 g/cm3.

How do you make syntactic foam?

The traditional way of producing syntactic foam is to embed glass hollow sphere into a mixture of epoxy hardener solution and then mix them until complete mixing. The mixture is degassed for several minutes and cast in mould at last.

Who invented syntactic foam?

There are three names that continually pop up when describing the early history of syntactic materials: Dave Cook of Flotation Technologies, Lou Watkins, and Bill Cumings, both of Cuming Corporation.

What is syntactic polypropylene?

Syntactic polypropylene coating solution provides thermal insulation for Bonga risers. Jan. 31, 2004. The growing development of deep-water and ultra deepwater fields poses new technological challenges for riser and flow-line coatings.

What is syntactic English?

The definition of syntactic is relating to the rules of language. An example of something syntactic is a sentence that uses the correct form of a verb; syntactic sentence. adjective.

What is isotactic polymer?

Isotactic polymers are composed of isotactic macromolecules (IUPAC definition). In isotactic macromolecules all the substituents are located on the same side of the macromolecular backbone. An isotactic macromolecule consists of 100% meso diads. Polypropylene formed by Ziegler–Natta catalysis is an isotactic polymer.

What are the syntactic properties?

There are two kinds of syntactic properties:

  • Word order.
  • Co-occurrence.

What are syntactic features?

Syntactic features are formal properties of syntactic objects which determine how they behave with respect to syntactic constraints and operations (such as selection, licensing, agreement, and movement).

What is the difference between syndiotactic and atactic?

The key difference between atactic isotactic and syndiotactic polymer is that atactic polymers have their substituents in a random manner and isotactic polymers have their substituents in the same side, whereas the syndiotactic polymers have their substituents in an alternating pattern.

What are isotactic and atactic polymer?

Atactic polypropylene is a soft, rubbery polymer, while isotactic polypropylene is strong and hard with excellent resistance to stress, cracking, and chemical reaction. Syndiotactic polypropylene has only recently been made on a large scale. It is somewhat softer than the isotactic polymer, but also tough and clear.