Ad
related to: polysulfide polymer- Industrial Certifications
Adhesives pass strict testing for
NASA low outgassing, USP Class VI
- About Master Bond
Adhesives, sealants & coatings for
high tech industrial applications
- Industries Served
Adhesives for electonics, aerospace
medical, optical, OEM, oil & gas
- What We Do
Help engineers meet specific
industrial application requirements
- Industrial Certifications
Search results
Results from the WOW.Com Content Network
The polymers are called thiokols. In some cases, polysulfide polymers can be formed by ring-opening polymerization reactions. Polysulfide polymers are also prepared by the addition of polysulfanes to alkenes. An idealized equation is: 2 RCH=CH 2 + H 2 S n → (RCH 2 CH 2) 2 S n. In reality, homogeneous samples of H 2 S n are difficult to ...
Thiokol is a trade mark for various organic polysulfide polymers. [1] Thiokol polymers are used as an elastomer in seals and sealants.The distinction between the polymers first commercialized by the Thiokol Chemical Company and subsequent polysulfide materials is often unclear.
Inverse vulcanization is a process that produces polysulfide polymers, which also contain some organic linkers. [1] In contrast, sulfur vulcanization produces material that is predominantly organic but has a small percentage of polysulfide crosslinks .
Sodium polysulfide is a general term for salts with the formula Na 2 S x, where x = 2 to 5. The species S x 2−, called polysulfide anions, include disulfide (S 2 2−), trisulfide (S 3 2−), tetrasulfide (S 4 2−), and pentasulfide (S 5 2−). In principle, but not in practice, the chain lengths could be longer.
Thiokol was an American corporation concerned initially with rubber and related chemicals, and later with rocket and missile propulsion systems. Its name is a portmanteau of the Greek words for sulfur (Greek: θεῖον, romanized: theion) and glue (Greek: κόλλα, romanized: kolla), an allusion to the company's initial product, Thiokol polymer.
Polyphenylene sulfide (PPS) is an organic polymer consisting of aromatic rings linked by sulfides. Synthetic fiber and textiles derived from this polymer resist chemical and thermal attack. PPS is used in filter fabric for coal boilers, papermaking felts, electrical insulation, film capacitors, specialty membranes, gaskets, and packings.
Sometimes as a mixture with other polysulfides, sodium tetrasulfide is used to produce the polymer called thiokol. The reaction involves alkylation with ethylene chloride : Na 2 S 4 + C 2 H 4 Cl 2 → 1/n (C 2 H 4 )S x ] n + 2 NaCl
DCDPS is the precursor to polymers known as Udel (from bisphenol A), PES, and Radel R. Udel is a high-performance amorphous sulfone polymer that can molded into a variety of different shapes. It is both rigid and temperature-resistant, and has applications in everything from plumbing pipes, to printer cartridges , to automobile fuses .
Ad
related to: polysulfide polymer