The method is provided for manufacturing a perforated sheet-like high-voltage insulating spacer for a high-voltage component, which component comprises a field grading condenser core with the spacer which is wound in spiral form around an axis, with electrically conducting layers which are inserted between successive windings of the spacer, and with a polymeric matrix which penetrates the spacer and which embeds the spacer and the layers. The method comprises at least steps as follows: an electrically insulating tape, and the patterned tape is expanded at right angle to the cutting lines in order to form a spacer with a perforated three-dimensional lattice structure. The combined effect of cutting a tape and expanding the cutted tape allows the formation of spacers with a manifold of sizes which exceed the size of the tape in function of manufacturing parameters, in particular in function of the configuration of the pattern and the magnitude of the expansion.

A cable having conductors that may be easily exposed in preparation for electrical connection, without requiring the use of tools, is provided. The insulating layer of the cable has at least one relatively weak portion extending along the length of the cable that is configured to allow the insulating layer to split, thereby exposing the wire without the use of tools.

A layer, sheet or film containing one or more flake-form effect pigments and one or more light scattering centers, methods for its preparation, its use for any type of device collecting solar cell energy, including but not limited to coloring solar cells or solar cell modules, and devices collecting solar cell energy, including but not limited to colored solar cells or colored solar cell modules, comprising such a layer, sheet or film, and methods for their preparation.

A shrink cap for receiving a temperature-dependent switch. The shrink cap includes an open first end for sliding onto the switch and a closed second end which is closed by a welded or embossed seam that extends from an end face arranged in an area of the second end and resulting from the welded or embossed seam. The welded or embossed seam is formed in such a way that a formed section of the welded or embossed seam bears against the end face directly or with an interposed joining agent.

Provided herein according to some embodiments is polymerizable liquid useful for the production of a three-dimensional object by additive manufacturing, said polymerizable liquid comprising a mixture of: (a) at least one photopolymerizable component; (b) a photoinitiator, (c) at least one heat polymerizable component; and (d) heat expandable microspheres. A method of making a three-dimensional object from such a polymerizable liquid by additive manufacturing and objects so produced are also provided.

A silicone rubber insulator shed material, and a silicone rubber insulator and a preparation method therefor and an application thereof. The components of the silicone rubber insulator shed material comprise silicone rubber, iron oxide, nano-montmorillonite, fumed silica, aluminum hydroxide, a silane coupling agent, a vulcanizing agent, and hydroxy silicone oil, wherein the iron oxide and the nano-montmorillonite can slow down the thermal oxidation decomposition of the silicone rubber, thus improving the hydrophobicity, hydrophobic mobility and hydrophobic recovery of the silicone rubber composite insulator, thereby solving the technical problem in the prior art that the aging decomposition resistance of silicone rubber needs to be improved.