Topic
Polycarbonate
About: Polycarbonate is a research topic. Over the lifetime, 14032 publications have been published within this topic receiving 141740 citations. The topic is also known as: PC & Polycarbonate, PC.
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TL;DR: In this paper, the effect of the Ar:O 2 ratio on the structural, morphological and electrochemical properties of the samples is investigated and the importance of morphology towards the enhancement of the electrochromic behaviour of the coatings is discussed.
35 citations
TL;DR: In this article, a conical diamond indenter was driven simultaneously into a thin film and across the film surface at a rate of 0.5 μm/s until a load drop or other discontinuity occurred, indicating film failure.
Abstract: The adhesion strengths of metal/ceramic, metal/polymer, and polymer/polymer interfaces have been characterized using the continuous microscratch technique. In these experiments, a conical diamond indenter was driven simultaneously into a thin film at a rate of 15 nm/s and across the film surface at a rate of 0.5 μm/s until a load drop or other discontinuity occurred, indicating film failure. The critical load at failure of the thin film was taken as a measure of the adhesion strength. For metal/ ceramic systems such as Cr thin films on Al2O3, and for diamond-like-carbon (DLC) films on glass, clear load drops provided an accurate measure of the adhesion strengths. For metal/polymer systems such as Cu thin films on PET, a change in the loading pattern and periodic cracking events along the scratch track provided evidence of film delamination. For DLC films on polycarbonate substrates, the carbon thin film cracked before it delaminated. For bulk polymers such as polycarbonate and polystyrene/polypropylene, c...
35 citations
Patent•
14 Nov 1985TL;DR: In this paper, the impact strength of polyesters of terephthalic acid, trans-4,4'-stilbenedicarboxylic acid, and bisphenol A polycarbonate has been investigated.
Abstract: Disclosed are blends of polyesters of terephthalic acid, trans-4,4'-stilbenedicarboxylic acid, and bisphenol A polycarbonate. The polymers are compatible, and blends prepared from these polymers have excellent impact strength and are useful as molding plastics, fibers, and films.
35 citations
Patent•
10 Dec 2008
TL;DR: In this article, a method for producing polycarbonate exhibiting excellent mechanical strength, heat resistance, a small refractive index, a large Abbe number, small birefringence, and excellent transparency, and containing a raw material resulting from vegetables, was proposed.
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing polycarbonate exhibiting excellent mechanical strength, heat resistance, a small refractive index, a large Abbe number, small birefringence, and excellent transparency, and containing a raw material resulting from vegetables, and to provide moldings of the polycarbonate. SOLUTION: The method for producing a polycarbonate comprises a step of reacting a dihydroxy compound containing a dihydroxy compound having at least one connecting group represented by -CH 2 -O- in the molecule with a carbonic diester in the presence of a polymerization catalyst, wherein the content of formic acid in the dihydroxy compound having at least one connecting group represented by -CH 2 -O- in the molecule is less than 20 ppm. The moldings are made of either a polycarbonate which contains constituent units derived from a dihydroxy compound having at least one connecting group represented by -CH 2 -O- in the molecule and which exhibits an Abbe number of 50 or above and a 5% weight loss temperature of 340°C or above, or a composition comprising the polycarbonate. COPYRIGHT: (C)2009,JPO&INPIT
35 citations
TL;DR: In this article, the ability of the TNM model to describe the enthalpy relaxation behavior of polycarbonate systems is tested and the sensitivity of the model parameters to the changes in chemical composition is examined.
35 citations