摘要:
An apparatus for irreversibly indicating that the permissible temperature of stored products has been temporarily exceeded is described, in which a container has a heat-conducting connection to the product to be monitored and contains, in its interior, a medium having a melting point which is just above the permissible storage temperature, magnetizable particles being suspended in the medium. Moreover, solid magnetizable bodies are uniformly distributed in the container. After the deep-freezing process is complete, the magnetizable particles and the solid bodies are magnetized. If the permissible storage temperature is exceeded, the suspension becomes liquid and the pigments accumulate on the solid bodies, an optical indicator present on a wall of the container and visible from the outside detecting that the permissible temperature has been exceeded.
摘要:
A compression generator uses a plurality of jackbolts threadedly engaged at a spaced apart relation about a bolt circle in a main core element. The main core element is releasable interlocked by threads, bayonet connection or other form of fasting system with the mounting element forming a fixed part of the mechanical connection. The jackbolts torqued to generate a pushing force in an axial direction for compressing a moveable part of the mechanical connection against a compression seat for forming a mechanical connection between juxtaposition fixed and moveable parts.
摘要:
A composite material consisting of aluminium oxide as a ceramic matrix and zirconium oxide dispersed therein. The invention also relates to a method for the production thereof and components containing same.
摘要:
A piston has an upper crown portion with an upper combustion wall against which combustion forces act and a lower crown portion with a pair of pin bosses spaced for receipt of a small end of a connecting rod therebetween. The upper crown portion and the lower crown portion form an outer oil gallery and a central oil gallery in fluid communication with one another. The central oil gallery is formed in part by an annular flange extending radially inwardly from the outer oil gallery and upwardly toward the upper combustion wall to a free edge spaced from the upper combustion wall. The free edge forms an opening about a central axis of the piston and has a non-planar uppermost surface with depressions aligned diametrically opposite one another across the opening to improve the oil flow throughout the central oil gallery.
摘要:
Metalizable foils or sheets produced from a plastics mixture comprising, components A, B, C, and D, which gives a total of 100% by weight, a from 5 to 50% by weight of a thermoplastic polymer as component A, b from 50 to 95% by weight of a metal powder with an average particle diameter of from 0.01 to 100 μm where the normal electrode potential of the metal in acidic solution is more negative than that of silver, as component B, c from 0 to 10% by weight of a dispersing agent as component C, and d from 0 to 40% by weight of fibrous or particulate fillers or their mixtures as component D, wherein the tensile strain at break of component A is greater by a factor of from 11 to 100 than the tensile strain at break of the plastics mixture comprising components A, B, and, if present, C and D, and wherein the tensile strength of component A is greater by a factor of from 0.5 to 4 than the tensile strength of the plastics mixture comprising components A, B, and, if present, C and D.
摘要:
The present invention relates to a dispersion for application of a metal layer on a substrate that is not electrically conductive, comprising an organic binder component, a metal component with different metals and/or metal particle shapes, and with a solvent component. The invention moreover relates to a process for preparation of the dispersion, to a process using the dispersion for production of a metal layer, if appropriate structured, and to the resultant substrate surfaces and their use.
摘要:
Disclosed are polymerizable liquid-crystalline compounds of the general formula (I) where A1 and A2 are identical or different and are each a crosslinkable group; the radicals X are identical or different and are each a single bond, —O—, —S—, —C═N—, —O—CO—, —CO—O—, —O—CO—O—, —CO—NR—, —NR—CO—, —NR—, —O—CO—NR, —NR—CO—O—, —CH2—O— or —NR—CO—NR, in which R is H or C1-C4-alkyl; and M is a mesogenic group, a process for their preparation and their use for preparing cholesteric phases.
摘要翻译:公开了通式(I)的可聚合液晶化合物,其中A 1和A 2相同或不同,并且各自为可交联基团; 基团X相同或不同,并且各自为单键,-O - , - S - , - C = N - , - O-CO-,-CO-O-,-O-CO-O-,-CO -NR-,-NR-CO-,-NR-,-O-CO-NR,-NR-CO-O-,-CH2-O-或-NR-CO-NR,其中R是H或C1- C4-烷基; M是介晶基团,其制备方法及其用于制备胆甾型相。
摘要:
A platelet-shaped cholesteric multilayer pigment which comprises the layer sequence A/B/ and if desired C, where A and C independently of one another are at least one partly light-permeable absorption layer, and B is at least one cholesteric layer.
摘要:
Improved cholesteric special-effect layers are obtainable by comminuting cholesteric layers. These cholesteric layers are produced by applying at least one layer of a reactive, pourable cholesteric mixture to a moving substrate, by casting, and forming a solid cholesteric layer.