A preparation method of a vanadium oxide powder with high phase-transition latent heat includes steps of taking vanadium pentoxide, oxalic acid and PVP as raw materials, preparing a B-phase VO.sub.2 nano-powder modified by the PVP, and then annealing the B-phase VO.sub.2 nano-powder modified by the PVP at high temperature in an oxygen atmosphere, and obtaining the vanadium oxide powder with high phase-transition latent heat which includes M-phase VO.sub.2 with a mass percentage in a range of 96-99% and V.sub.6O.sub.13 with a mass percentage in a range of 1-4%, and has the phase-transition latent heat larger than 50 J/g. Compared with the vanadium oxide powder prepared by a traditional method without PVP modification and using a vacuum annealing process, the phase-transition latent heat of the vanadium oxide powder provided by the present invention is increased by at least 60%.

The present invention pertains to a multilayer assembly, to a process for the manufacture of said multilayer assembly, to a pipe comprising said multilayer assembly and to uses of said pipe in various applications.

The present invention pertains to a multilayer assembly, to a process for the manufacture of said multilayer assembly, to a pipe comprising said multilayer assembly and to uses of said pipe in various applications.

A stable conductive myocardial patch with a negative Poisson's ratio structure is provided. The preparation method includes preparing a myocardial patch substrate with concave polygons as the structural units by weaving or knitting, and then a conductive coating is coated on the surface of the substrate. Alternatively, the yarns can be processed into conductive coated yarns first, and then used as the raw material to weave or knit a stable conductive myocardial patch with a negative Poisson's ratio structure. The prepared myocardial patch has a relative resistance change of less than 5% at 50% tensile strain. When the strain of the structural units is within 50%, the fabric exhibits a negative Poisson's ratio structure, which expands in the perpendicular direction of the tensile load. The fabric exhibits a negative Poisson's ratio effect and anisotropy of Young's modulus, which matches the mechanical behavior of natural myocardium.

A stable conductive myocardial patch with a negative Poisson's ratio structure is provided. The preparation method includes preparing a myocardial patch substrate with concave polygons as the structural units by weaving or knitting, and then a conductive coating is coated on the surface of the substrate. Alternatively, the yarns can be processed into conductive coated yarns first, and then used as the raw material to weave or knit a stable conductive myocardial patch with a negative Poisson's ratio structure. The prepared myocardial patch has a relative resistance change of less than 5% at 50% tensile strain. When the strain of the structural units is within 50%, the fabric exhibits a negative Poisson's ratio structure, which expands in the perpendicular direction of the tensile load. The fabric exhibits a negative Poisson's ratio effect and anisotropy of Young's modulus, which matches the mechanical behavior of natural myocardium.

The present invention provides a photocurable resin composition containing a polymer (A) which has excellent adhesion to plastic substrates. The present invention relates to a photocurable resin composition that contains a polymer (A) produced by polymerization of a compound represented by the following formula [I]: ##STR00001## wherein each R.sup.1 may be the same or different and represents a hydrogen atom, a C1-C5 alkyl group, a glycidyl group, or the group —CH.sub.2—CR.sup.3═CHR.sup.2 wherein R.sup.2 and R.sup.3 each represent H or CH.sub.3, provided that at least one R.sup.1 is the group —CH.sub.2—CR.sup.3═CHR.sup.2.

The present invention provides a photocurable resin composition containing a polymer (A) which has excellent adhesion to plastic substrates. The present invention relates to a photocurable resin composition that contains a polymer (A) produced by polymerization of a compound represented by the following formula [I]: ##STR00001## wherein each R.sup.1 may be the same or different and represents a hydrogen atom, a C1-C5 alkyl group, a glycidyl group, or the group —CH.sub.2—CR.sup.3═CHR.sup.2 wherein R.sup.2 and R.sup.3 each represent H or CH.sub.3, provided that at least one R.sup.1 is the group —CH.sub.2—CR.sup.3═CHR.sup.2.

We describe a new approach to fabricate polymeric materials with surface structures for applications as anti-reflective, anti-icing, superhydrophobic, superhydrophilic, de-wetting, and self-cleaning coatings. In some variations, a surface-textured layer comprises first microdomains and second microdomains each containing polymerized cross-linkable photomonomer, where the first microdomains have a higher average cross-link density than that of the second microdomains. The first microdomains and the second microdomains are in a peak-valley surface topology, providing surface texture with no filler particles. In some variations, a method to fabricate a surface-textured layer comprises: applying a cross-linkable photomonomer layer to a reflective substrate; exposing the photomonomer layer to a collimated light beam with no spatial variation, to initiate polymerization in first microdomains; and polymerizing other regions of the photomonomer layer to form second microdomains that are spatially separated from the first microdomains. The first microdomains have a higher average cross-link density compared to the second microdomains.

We describe a new approach to fabricate polymeric materials with surface structures for applications as anti-reflective, anti-icing, superhydrophobic, superhydrophilic, de-wetting, and self-cleaning coatings. In some variations, a surface-textured layer comprises first microdomains and second microdomains each containing polymerized cross-linkable photomonomer, where the first microdomains have a higher average cross-link density than that of the second microdomains. The first microdomains and the second microdomains are in a peak-valley surface topology, providing surface texture with no filler particles. In some variations, a method to fabricate a surface-textured layer comprises: applying a cross-linkable photomonomer layer to a reflective substrate; exposing the photomonomer layer to a collimated light beam with no spatial variation, to initiate polymerization in first microdomains; and polymerizing other regions of the photomonomer layer to form second microdomains that are spatially separated from the first microdomains. The first microdomains have a higher average cross-link density compared to the second microdomains.

Provided is a curable compound having a low melting temperature, having excellent workability as a result of having good solvent solubility, and being capable of forming a cured product having excellent heat resistance. The curable compound according to an embodiment of the present invention includes the following characteristics (a) to (e). (a) Number average molecular weight (calibrated with polystyrene standard): 1000 to 15000. (b) Proportion of a structure derived from an aromatic ring in the total amount of the curable compound: 50 wt. % or greater. (c) Solvent solubility at 25° C.: 1 g/100 g or greater. (d) Glass transition temperature: 280° C. or lower. (e) 5% Weight loss temperature (T.sub.d5) measured at a rate of temperature increase of 10° C./min (in nitrogen), for a cured product of the curable compound: 300° C. or higher.