132results about How to "High bonding strength between layers" patented technology

The present invention provides a multilayer plastic bottle comprising layers of PET and a polyamide such as, for example, MXD6, that is free from occurrence of delamination upon dropping or upon exposure to impact. The present inventors have found that when forming a barrier layer containing an adhesion promoting agent according to the present invention, an impact energy applied to the barrier layer is well reduced and the resultant multilayer bottle is improved in interlaminar bonding strength and prevented from suffering from delamination upon dropping, etc.

The invention discloses a 3D forming method based on outline injection molding. The method includes the following steps that a three-dimensional model is obtained and cut; a material is converted into a shell; layering and slicing are carried out; the outline of slices is calculated; the structure of the outline is subjected to 3D printing; filling and curing are carried out; final molding is achieved. The three-dimensional model of a printed object is obtained through 3D modeling software and converted so that the shell slices can be obtained, then the shell of the object is printed in a 3D mode, a sprue is reserved in the top or the bottom of the shell, one or more of a light curing liquid material, sealing glue, melted liquid and a meltable powder material are injected from the sprue to the interior for filling, curing and fusion are carried out, and the problem that an existing light curing technology is not high in layer-to-layer bond strength is solved. By means of the improvement, layer-to-layer bond strength is improved, and the injection molding speed is increased.

The invention discloses a carbon/carbon composite material flat plate preparation method, which comprises the following steps that 1) finely woven carbon fiber fabric and short carbon fiber nets are subjected to alternating lamination; 2) a carbon fiber needling integral felt is obtained in a needling mode; 3) resin dipping and curing are carried out; 4) graphitization treatment is carried out; and 5) chemical gas phase decomposition and density enhancement are carried out. The carbon/carbon composite material flat plate preparation method disclosed by the invention can be used for preparing carbon/carbon composite materials with good surface flatness and high interlayer combination degree.

The present invention relates to a multi-layer structure constructed of two or more layers including a potassium ionomer layer (X) having a low surface resistivity and a layer (Y) comprising a polymer material having a high surface resistivity like LLDPE as a surface layer, where the static charge decay characteristics of the layer (Y) is improved. This type of two layer or three layer structure having the layer (X) as its intermediate layer or another surface layer gives good slip characteristics, abrasion resistance, and dust-free characteristics, and hence is useful for packaging materials, such as films, sheets and containers.

The invention belongs to the technical field of papermaking and particularly relates to an environment-friendly low-basis-weight coated duplex board with grey back and a preparation method thereof. The environment-friendly low-basis-weight coated duplex board with grey back includes a coating layer, a front glue applied layer, a surface layer, a core layer, a bottom layer, and a back glue applied layer, all the layers being laminated by spraying a starch solution. In the invention, a mechanical thermal pulp TMP for producing medium-density polymeric plates is employed, wherein the mechanical thermal pulp is environment-friendly and low-cost, and has wide sources. In addition, the invention mainly provides a production technology of the low-basis-weight coated duplex board with grey back by applying the novel environment-friendly TMP pulp. The technology mainly includes three-layer mesh lamination shaping, spraying starch solution as interlayer adhesive and the like processes, so that the coated duplex board with grey back has excellent performance, is environment-friendly and energy-saving, and is low in cost.

The invention relates to a method for manufacturing a micro-shaped composite contact strip. In the method, the precious metal round wire and the matrix strip are directly composited by continuous rolling welding technology, and then the composited material is processed by precision rolling or rolling die drawing. Molding to prepare products of desired shape. The advantage of this method is that the precious metal is directly in the form of round wire, which not only increases the composite ratio of the precious metal and the base material, realizes the preparation of a micro-shaped composite contact strip with a large difference in width between the electrical contact layer and the base layer, but also improves the yield and Production efficiency, reducing production costs.

The invention discloses a preparation method of a sizing enhancer. The method is as follows: after cooking and viscosity reduction of starch, introducing nitrogen, cooling to 60-80 DEG C, adding an initiator, and reacting for 10 to 30 minutes; dropwise adding a hydrophobic monomer mixture, a hydrophilic monomer mixture solution, an internal crosslinking monomer solution and an initiator aqueous solution respectively, wherein the dropwise-adding time is controlled to 20 to 90 minutes, and the reaction temperature is controlled at 65 DEG C to 95 DEG C during the time; after the dropwise additionis completed, controlling the temperature at 80 DEG C-95 DEG C for reacting for 10 to 60 minutes, replenishing an initiator, continuing to react at 80 DEG C to 95 DEG C for 30 to 90 minutes, after areactor is free of reflux and the viscosity at 25 DEG C reaches 50 to 500 mPa.s, adding a terminator, cooling, adding an external crosslinking agent, and adjusting the pH to 4 to 6 to obtain the sizing enhancer. The sizing enhancer can be used for in-slurry sizing and surface sizing, and has the advantages such as good reinforcing effect, fast sizing and aging speed, and good resistance to moisture respiration.

There is provided a multilayer bottle including an outermost layer and an innermost layer which are each made of a thermoplastic polyester resin, and at least one barrier layer interposed between the outermost layer and the innermost layer. The barrier layer contains at least two components including a polyamide obtained by polycondensing a diamine component containing m-xylylenediamine as a main component with a dicarboxylic acid component containing an α,ω-linear aliphatic dicarboxylic acid as a main component, and a thermoplastic resin having a lower molecular weight than that of the polyamide. The multilayer bottle hardly suffers from delamination upon impact or dropping and, therefore, is not required to have a shape with less irregularities or less bends for preventing the delamination, and further has a large freedom of design choice.

A multi-element atmosphere controllable spray method includes such steps as installing a sample on carrier table, regulating spray distance, sealing door, vacuumizing, filling inertial gas, heating sample, using arc and plasma guns for spaying, holding its temp, and cooling. Its apparatus is composed of case, supporting plate, movable carrier table, heating plate and arc and plasma guns.

The invention belongs to the technical field of ceramics, and provides a preparation method of a ceramic material, which comprises the following steps: degumming a zirconium oxide toughened aluminum oxide ceramic blank, pre-sintering, soaking in steeping liquor and sintering, wherein the impregnation liquid comprises a zirconium ion salt solution, an aluminum ion salt solution and urea. According to the preparation method of the ceramic material, the mixed solution of the zirconium ion salt solution, the aluminum ion salt solution and the urea is adopted as the steeping liquor to carry out post-treatment on the zirconium oxide toughened aluminum oxide ceramic green body, the compactness of the ceramic material is improved, and the defect that a ceramic product prepared through a traditional 3D printing technology is low in hardness is overcome.

The invention relates to the technical field of leather manufacturing, and discloses a preparation process of fully-penetrated cow fiber leather base cloth. The preparation process includes a batching process, a chemical fiber net forming process, a cow leather fiber net forming process, and a process of laminating the chemical fiber net and the cow leather fiber net into a net, wherein the batching process includes taking chemical fibers and cow leather fibers as raw materials for preparing fully-penetrated cow fiber leather base cloth, and batching according to a proportion; the chemical fiber net forming process sequentially includes the working procedures of opening, carding, net laying, pre-wetting and pre-penetrating: in the cow leather fiber net forming process, making cow leather fiber raw materials into a cow leather fiber net by adopting airflow net forming or water flow net forming; and the process for laminating the chemical fiber net and the cow leather fiber net into a net sequentially includes the working procedures of laminating the net, spunlacing, vacuum suction and drying, and the net laying working procedure includes warp cross laying and weft cross laying. The preparation process improves the physical properties of the cow fiber leather base cloth and reduces the production cost.

The invention relates to a laminated metal composite of NbTiAl group, and relative production, wherein said composite is formed by one layer of Nb group flexible metal alloy layer, above one layer of Nb group metal compound, and above one layer of Nb group flexible metal alloy. The invention is made from laser deposition method, while the metal compound layer is directly composed on the flexible metal alloy layer via said method; the flexible metal layer and metal compound layer are smelt, while their thickness and ratio can be controlled. The invention has high flexibility in room temperature and high temperature.

The invention discloses an ML kraft paperboard and a preparation process thereof, and mainly relates to the technical field of papermaking. According to the ML kraft paperboard, basis weight is 170, 200g/m<2>, the banner quantitative difference is less than or equal to 3%, tightness is greater than or equal to 0.75 g/cm<3>, smoothness is greater than or equal to 5s, a lateral ring pressure index is greater than or equal to 7.3N.m/g, interlayer bonding strength is greater than or equal to 130J/m<2>, a bursting index is greater than or equal to 1.8kpa. M<2>/g, transverse folding strength is greater than or equal to 4 times and paper moisture is 8+/-2%. The preparation process of the ML kraft paperboard comprise the steps that preparation, pulping, mixing, paper forming and rewinding are carried out to obtain the paperboard, and then packaging is carried out; and pulp is ground during pulping, spray starch and fillers are added during paper making, and a dyeing agent is added for dyeing.The ML kraft paperboard has the advantages of low cost, high interlayer bonding, high water resistance, high smoothness and clean front appearance. The ML kraft paperboard is mainly used in a surfacelayer and an inner layer of an industrial paper tube, the ''angle-rising'' problem does not occur when the paper tube is cut in sections due to low basis weight; and the problems of surface blisteringand paper tube layering are solved due to the fact that the interlayer bonding strength of the ML kraft paperboard is higher than that of a general kraft paperboard and cardboard paper.

The invention discloses a screen with a light absorption layer and a preparation method of the light absorption film for the light absorption layer. The screen comprises a first transparent base material layer, an optical function layer, an adhesive glue layer and the light absorption layer, which are sequentially stacked from the incident side of the projection light. The light absorption layer receives and absorbs light which passes through the adhesive layer and reaches the light absorption layer. The optical function layer comprises a plurality of microstructure units, and the plurality ofmicrostructure units form a sawtooth structure. The optical function layer can enable at least a part of projection light to be emitted after total reflection and to transmit at least a part of ambient light. According to the invention, the screen gain can be improved while the high contrast is obtained, the processing technology can be simplified, and the cost can be reduced.

The invention provides an ablation-resistant, wave-absorbing, antiskid and wear-resistant composite coating and a preparation method thereof, and belongs to the field of special functional coatings. The composite coating comprises an anticorrosion bottom layer, an ablation-resistant wave-absorbing sandwich layer, an antiskid and wear-resistant layer and an anti-aging surface layer, and the composite coating is designed through collaborative matching of interlayer thickness to form a multifunctional compatible integrated coating. Compared traditional antiskid coatings, the coating of the invention has the following advantages: the process is simple, the reflectivity of the composite coating is smaller than or equal to -7 dB in a frequency band of 8-18 GHz, the composite coating has a low linear ablation rate and a good anti-aging performance, the static friction coefficient before and after abrasion is larger than or equal to 1.10, the composite coating can pass GJB150 environment testassessment, and the coating design scheme has remarkable technical advancement.

The invention discloses a high-abrasion-proof tangential belt. The tangential belt comprises an outer elastic layer, a strengthening layer, an inner elastic layer and an abrasion-proof layer, wherein the outer elastic layer and the inner elastic layer are adhered to two sides of the strengthening layer by using an adhesive, the outer elastic layer is arranged on the outer side, the abrasion-proof layer is formed on one side of the inner elastic layer, and the abrasion-proof layer is an adhered abrasion-proof coating. The high-abrasion-proof tangential belt disclosed by the invention is reasonable in structure design and high in interlayer bonding strength, and a body has good strength and flexibility; and meanwhile, because the bottom of the tangential belt is additionally provided with an abrasion-proof coating, the tangential belt shows the excellent application performance on high-speed textile equipment, and is long in service life.

There is provided a method for filling a multilayer bottle including outermost and innermost layers and at least one barrier layer interposed between the outermost and innermost layers, with a material to be stored therein. In the filling method, the material to be stored is filled in the multilayer bottle having the barrier layer satisfying a specific glass transition point (Tg) and a specific water content as measured by a Carl-Fisher method at 230° C. for 30 min. The multilayer bottle obtained by the filling method of the present invention hardly undergoes delamination between the layers owing to dropping or impact, and is applicable to a filling method such as hot filling.

There is provided a multilayer bottle including outermost and innermost layers each made mainly of a polyester (A) and at least one barrier layer interposed between the outermost and innermost layers. The polyester (A) is a thermoplastic resin obtained by polymerizing a dicarboxylic acid component containing 80 mol % or more of terephthalic acid with a diol component containing 80 mol % or more of ethylene glycol. The barrier layer is composed of a polyamide (B) and a polyamide (C). The polyamide (B) is obtained by polycondensing a diamine component containing 70 mol % or more of m-xylylenediamine with a dicarboxylic acid component containing 70 mol % or more of an α,ω-linear aliphatic dicarboxylic acid having 4 to 20 carbon atoms. The polyamide (C) has a higher saturation water content than that of the polyamide (B) as measured at 23° C. and 50% RH under 1 atm, and a content of the polyamide (C) in the barrier layer is 20% by weight or less on the basis of a weight of the barrier layer. The multilayer bottle hardly suffers from delamination upon dropping or upon exposure to impact and, therefore, is not required to have a shape with less irregularities or less bends for preventing the delamination, and further has a large freedom of design choice.