The first significant reference to the use of magnesium hydroxide
as a rubber chemical is a paper presented at the 1985 Rubber Division meeting in Los Angeles [ref.
Offers a complete line of flame retardants, including antimony oxide, zinc borate, solid and liquid chlorinated paraffins, alumina trihydrate, magnesium hydroxide
, and phosphate ester plasticizers.
is a nontoxic inorganic product (either natural or synthetically precipitated), with low corrosiveness, smoke-suppressant properties, and relatively low cost.
Tert-butylperoxy 2-ethylhexyl carbonate (TBEC) (95%) (Sigma-Aldrich), sodium hydroxide
(99%) (Exodo), calcium chloride (96%) (Ecibra), ethanol (99.5%) (Synth), copper(II) nitrate hemi(pentahydrate) (98%) (Sigma-Aldrich), zinc nitrate hexahydrate (98%) (Sigma-Aldrich), stearic acid (95%) (Sigma-Aldrich), azelaic acid (85%) (Sigma-Aldrich), myristic acid (99%) (Sigma-Aldrich), polyethylene glycol monolaurate (PEG monolaurate) ([M.sub.n] approximately 400 g/mol) (Sigma-Aldrich), silicone fluid (350 cps) (Dow Corning), and release compound (used in the injection procedure) (Dow coming) were of analytical grade and used as received.
Figure 1 shows the FTIR spectra of the isolated layered double hydroxides
. The characteristic absorption band for the water molecules was observed in all the compounds.
are among the most commonly used flame retardants worldwide.
of China petroleum; polyethylene grafted by maleic anhydride (PE-1040) was supplied by Guangzhou aiqing sea additive Co; ordinary magnesium hydroxide
(analytical reagent) was supplied by Tianjin Institute of Fine Chemicals (particle size 0.5-2.0 [micro]m); ultrafine magnesium hydroxide
was prepared in our laboratories (particle size 100-200 nm).
"The results indicated the high performance of the suggested solid phase extraction method by using layered double hydroxide
nanoadsorbents in the real sample analysis and its desirable accuracy."
Martinal aluminum hydroxide
flame retardants for polymers with processing temperatures to 392 F; and Magnifin magnesium hydroxide
flame retardants for thermoplastics and elastomers requiring higher process temperatures up to 644 F.
In both cases, ferric oxide hydroxide
appeared as a solid product along with some organic matter.
* Magnifin magnesium hydroxide
flame-retardant fillers with a processing temperature to 340 C.
It can also reduce the rate of heat release of flexible PVC and polyphenylene oxide, and has been used in conjunction with alumina trihydrate, magnesium hydroxide
, or a silicone source in halogen-free systems.