A Withdrawn Specification for Seamless Carbon Steel Boiler Tubes FB Test Method for Specific Optical Density of Smoke Generated by. Test according to ASTM E Standard Test 6, 28, 2 3. Specific optical density. 0, 1, 0, 2, 1, 8, 3, 7, Astm F 83 Pdf 13 DOWNLOAD. washer must be held between two inch ( 13 mm) nuts that are adjusted to tightly. (ASTM) Standard Test Method ASTM.
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Heat release testing was performed on An article selected from a molded article, a thermoformed article, a foamed article, an extruded film, an extruded sheet, one or more layers of a multi-layer article, a substrate for a coated article or a substrate for a metallized article aatm from the composition of d814-83 1. In some applications, it can be desirable to have a transparent article. Aromatic ashm resin composition and molded item and member for lighting including the same.
Combinations comprising at least one of the foregoing dihydroxy aromatic compounds can also be used. It will be recognized by one skilled in the art that the method is not limited to these temperatures or processing equipment. The total amount of additives other than any filler or reinforcing agents is generally 0.
NBS Smoke Density Chamber, Smoke Toxicity Chamber, ASTM Smoke Density Chamber
This disclosure generally relates to polycarbonate compositions, and more particularly to flame retardant polycarbonate compositions containing specific combinations of polycarbonates. A combination of additives can be used.
Non-brominated and non-chlorinated phosphorus-containing flame retardants can be added f14-83 certain applications, for example organic compounds containing phosphorus-nitrogen bonds. In Table 1, a reference to D10, D30, or D45 means a dimethylsiloxane block f814-883 an d814-83 length of Centrifuges three through eight substantially removed residual ions by extracting the polymer solution with DI water.
Formulations with high transmission, low haze and low yellowness index values that pass OSU flame and smoke tests are particularly useful in window articles, gauge and dashboard covers and in window dust covers on aircraft.
In another specific embodiment, the polydiorganosiloxane units are derived from polysiloxane bisphenol of formula Title 14 Part 25 Subpart I.
For example, —CHO is attached through carbon of the carbonyl group. Flame retardant poly siloxane copolymer compositions, methods of manufacture, and articles formed therefrom. Mixtures comprising linear polycarbonates and branched polycarbonates can be used.
In an embodiment, each R 1 is a divalent aromatic group, for example derived from an aromatic dihydroxy compound of formula 4: R 3 is each independently a divalent C aliphatic group.
These compositions and results are shown in Table The composition of claim 31wherein the third polycarbonate is a homopolymer f81-83 bisphenol A carbonate units.
Astm F 83 Pdf 13
Any of the foregoing articles, but in particular the transparent articles, can further have a hardcoat disposed on a surface of the article to enhance abrasion and scratch resistance, chemical resistance, and the like. Specifically, a tetrabromobisphenol-A epoxy be used, having 2,4,6-tribromophenol endcaps.
Optical Density of Smoke. Therefore in order to ff814-83 a maximum density of less than 1. The first, second, and optional third polycarbonate are further selected and used in amounts effective to satisfy the heat release rates described in FAR F The compositions therefore include amounts of the first and second polycarbonates or as described below, other brominated oligomer effective, i.
It would be a further advantage if such materials could be manufactured to be colorless and transparent.
In an embodiment where Z is H, compounds of formula 20 can be prepared by platinum catalyzed addition with an aliphatically unsaturated monohydric phenol. All of these applications have stringent flammability safety requirements that the polycarbonates must meet. The lower the haze levels, the better the transparency of the finished article. The composition of claim 3 wherein the first polycarbonate is derived from bisphenol A and formula 2 and wherein formula 2 has the formula.
When k is 3 and i is 0, bisphenols containing substituted or unsubstituted cyclohexane units are used, for example bisphenols of formula The mixture was transferred to the batch reactor. The twin screw extruder contained a vacuum port located near die face.
The amount of siloxane in the composition can be. This result illustrates once again that the asstm of siloxane in the blend is necessary to achieve consistent smoke performance pass f8114-83.
The polycarbonate compositions can be formed e. Low smoke polycarbonate composition and laminates, method of manufacture and product made therefrom. Despite extensive investigation, current materials that meet these FAR standards could be further improved with respect to other properties. The specific brominated oligomer and the amount of brominated oligomer are selected to provide at least 7.
In another embodiment, the additional polycarbonate is a homopolymer with Bisphenol-A carbonate units. Polycarbonate compositions, articles formed therefrom, and methods of manufacture axtm.
The composition of claim 1wherein the composition is substantially free of a fluorinated polyolefin encapsulated by poly styrene-acrylonitrile. Pigments such as titanium dioxide or other mineral fillers can be present in f81-483 polycarbonate compositions in amounts of 0 to 12 PHR, 0.
High clarity, low yellowness, and low density values in combination with excellent flame and smoke performance are critical for use of these compositions in airplane window applications and so higher bromine content compositions are expected to have f8114-83 utility in window applications.
Heat deflection temperature was measured on an annealed 3. Bright white sample plaques were placed on a 45 degree angle south facing rack exposed to an unobstructed sunlight light exposure for hours and then tested for a color shift by measuring the reflected light of the light-exposed plaques using a spectrophotometer. The first, second, optional third, and optional additional polycarbonates, as well as the TBBPA copolymer and brominated polycarbonate oligomer have repeating structural carbonate units of formula Suitable aliphatically unsaturated monohydric phenols included, for example, eugenol, 2-allylphenol, 4-allylphenol, 4-allylmethylphenol, 4-allylphenylphenol, 4-allylbromophenol, 4-allylt-butoxyphenol, 4-phenylallylphenol, 2-methylpropenylphenol, 2-allyl-4,6-dimethylphenol, 2-allylbromomethylphenol, 2-allylmethoxymethylphenol, and 2-allyl-4,6-dimethylphenol.
Combinations of two or more different brominated and non-brominated aromatic dihydroxy compounds can be used. In an embodiment, the tacticity of the siloxane can affect the effective amount of each polycarbonate copolymer used. Articles comprising the above-described compositions are further disclosed, c814-83 well as methods for the manufacture of the articles.