41results about How to "Reduce brittle fracture" patented technology

The invention provides a flexible display device, an organic light-emitting device and a preparation method thereof, which relate to the field of display technology and are used to solve the technical problem that the organic light-emitting device cannot emit light normally due to the breakage of the anode during the bending process. Wherein, the organic light-emitting device includes an array substrate and a light-emitting unit disposed on the array substrate, and the light-emitting unit includes a first electrode, a pixel layer and a second electrode stacked on the flat layer of the array substrate; The first electrode includes at least two layers of sub-electrodes, an organic isolation layer is arranged between every adjacent two layers of sub-electrodes, and each of the sub-electrodes is electrically connected.

A production method of pure cotton high-count and high-density compact sizing yarn, comprising the following steps: controlling the pre-sizing moisture regain of the yarn to 25% to 35%; 2) sequentially performing sizing treatment and drying treatment on the yarn and dry splitting treatment, the speed of the sizing machine is 35m / min~60m / min, when the yarn is dried, the moisture regain of the yarn is controlled to be 7%~9%, and the drying temperature is 60°C~ 90°C, the tension of the yarn is 350N-650N; 3) Carrying out waxing treatment and winding treatment on the yarn in sequence. According to the compact sizing yarn process of the present invention, the problem of low weaving efficiency caused by brittle fracture is effectively solved, and the quality of the weaving shaft and the efficiency of the loom are significantly improved.

The invention relates to a preparation method of a nano-wire reinforced SiC wear-resistant coating. A porous SiC nano-wire layer is prepared on the surface of a C / C (Carbon / Carbon) composite material, and the fracture toughness of the SiC coating is effectively improved by utilizing the super-high strength and elasticity modulus of the SiC nanometer and the good bonding force of the SiC nanometer with a SiC coating matrix, so that the high-temperature wear rate of the SiC coating is reduced, and the wear-resistance of the coating is enhanced. After the SiC nano-wire is added, the wear rate of the SiC coating at 800 DEG C is reduced to 1.83*10<-4>mm<3>.N<-1>.m<-1> from 1.51*10<-3>mm<3>.N<-1>.m<-1>, that is, the wear rate is reduced by one order of magnitudes.

The invention relates to a high-temperature-resistant ceramic-based composite member and a connecting method thereof. The method comprises the following steps: (1) uniformly mixing silicon powder, chopped carbon fibers, an organic dispersing agent and a phenolic resin to obtain mixed slurry; (2) coating a joint face of a first to-be-connected prefabricated member and / or a second to-be-connected prefabricated member with the mixed slurry, and laminating and connecting the joint face of the first to-be-connected prefabricated member and the second to-be-connected prefabricated member so as to obtain a pre-connecting piece, wherein the first to-be-connected prefabricated member and / or the second to-be-connected prefabricated member are / is made from fiber preforms; (3) at least impregnating the joint of the pre-connecting piece with the mixed slurry, and sequentially curing and splitting the impregnated pre-connecting piece so as to obtain a pre-connected member; and (4) carrying out a silicon-zirconium alloy infiltration reaction on the pre-connected member, thereby obtaining the high-temperature-resistant ceramic-based composite member. The method disclosed by the invention has the advantages of being simple in process, capable of obviously enhancing the member connection strength and enabling the overall member to be high-temperature-resistant, and the like.

The invention discloses a reinforced steel-based surface-layer spatial-configuration composite containing rear earth and modified particles and a preparation method thereof, and belongs to the technical field of powder metallurgy and composite preparation. The composite is composed of a reinforced body and a base body; the reinforced body is mixed powder of rear earth powder, the reinforced particles and 45 steel metal powder, and the base body is mixed powder of rear earth powder and 45 steel metal powder, wherein the rear earth powder is yttrium powder or neodymium powder; the preparation method comprises the steps that ball-milling is conducted on the reinforced body powder and the base body powder; the base body powder is put into a lower die, and corresponding holes are formed by means of upper dies in different shapes and filled with the reinforced body powder; vibration and pre-bulking are conducted, then forming is conducted by means of SPS, and finally, the reinforced steel-based surface-layer spatial-configuration composite containing the rear earth and the modified particles is obtained through heating treatment. According to the composite and the preparation method thereof, the technology is simple, the cost is low, the evenness of distribution of the reinforced particles with the spatial configuration in the base body is good, the bonding strength is high, and thecomposite has good durability and capability of impact resistance, corrosion resistance and oxidation resistance.