Reference

Resistance of PEEK and PPS to molten caprolactam

Resistance of PEEK and PPS to molten caprolactam. Wilfong, Debra L.Some chemicals with cas registry numbers like 7440-44-0 and 31694-16-3 are also used. (Corp. Res. Lab., 3M, St. Paul, MN 55144, USA). Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 28(1), 61-2 (English) 1987. CODEN: ACPPAY. ISSN: 0032-3934. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) Moderate amts. of molten caprolactam [105-60-2] were absorbed by unreinforced PEEK [31694-16-3] and fiber-reinforced PEEK and poly(thiophenylene) (I) [25212-74-2]. Fiber reinforcement decreased the chem. absorption more than expected, considering the decrease in material available for sorption. Carbon fiber-reinforced PEEK showed the strongest matrix/fiber interface in both the control and exposed specimens. The PEEK materials retained 87-92% of their ultimate tensile strength following chem. exposure whereas the I composite exhibited only 24% retention. .

Plasticization of aminoplasts filled with acetylcellulose wastes

Plasticization of aminoplasts filled with acetylcellulose wastes. Kononenko, S. G.Several substances are used for example 9003-08-1 and 84-74-2 which are their cas registry numbers.; Artemenko, S. E.; Ustinova, T. P.; Andreeva, V. V.; Karpovich, I. M.; Gus'kov, L. I.; Baranov, Yu. K. (USSR). Plast. Massy, (11), 39-40 (Russian) 1986. CODEN: PLMSAI. ISSN: 0554-2901. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) The physicomech. properties of acetylcellulose [9004-35-7]-filled formaldehyde-melamine polymer [9003-08-1] composites plasticized with dibutyl phthalate (I) [84-74-2], poly(vinylbutyral) (II), or caprolactam (III) [105-60-2] were measured as a function of plasticizer type and content. Introduction of 15% I into composites increased tensile strength by 40%, but was accompanied by decreases in brittleness and water absorption. Addn. of 0.5% II increased tensile strength by 40% with no decrease in brittleness, although water absorption decreased by 2-fold. Plasticization of composites with 25% III increased tensile strength by 60-70% and impact strength by 50%, without decreasing water absorption or thermal stability. The ability of III to confer good strength and thermal stability was linked to the formation of ordered structures in composites contg. >5% III, where III globules eliminate defects in polymer structure. .