331results about How to "Not brittle" patented technology

A liquid radiation-curable composition that comprises

• • (A) at least one polymerizing organic substance comprising a mixture of
    • (1) at least one alicyclic epoxide having at least two epoxy groups; and
    • (2) at least one difunctional or higher functional glycidylether of a polyhydric compound;
  • (B) at least one free-radical polymerizing organic substance comprising a mixture of
    • (1) optionally, at least one trifunctional or higher functional (meth)acrylate compound; and
    • (2) at least one aromatic di(meth)acrylate compound;
  • (C) at least one cationic polymerization initiator;
  • (D) at least one free-radical polymerization initiator;
  • (E) optionally, at least one hydroxyl-functional aliphatic compound; and
  • (F) at least one hydroxyl-functional aromatic compound;

wherein the concentration of hydroxyl groups in the radiation-curable composition is at least about 1.1 equivalent OH groups per kilogram;

wherein the concentration of epoxy groups in the radiation-curable composition is at least about 5.5 equivalent epoxy groups per kilogram; and

wherein the amount of trifunctional or higher functional (meth)acrylate compound (B)(1) is from 0% to about 3% of the composition and the amount of aromatic di(meth)acrylate compound (B)(2) is at least 10% of the composition.

A solid dust suppressant is prepared by mixing 40-90% of a water-soluble high molecular polymer, 5-40% of water-soluble high molecular glue, 0-25% of a moisture absorption humectant, 0.5-5% of a flexibilizer, 1-5% of an antiseptic and 3-10% of an osmotic agent, and has the characteristics of high film forming strength, low brightness and moderate viscosity. The viscosity (at 25DEG C), the pH value, the wind loss rate (under 30mm/s wind speed 5mins, %), the cured layer thickness, the film tensile strength, the film elongation at break and the material bursting strength of the solid dust suppressant are not lower than 8.0mPa.s, 6.0-7.0, not greater than 0.40, not lower than 11.25mm, greater than 11mpa, greater than 13% and greater than 0.05mpa respectively, and the solid dust suppressant realizes difficult brittle rupture after film formation, has a long effective dust suppression time and an ideal dust suppression effect.

The present invention discloses a hollow hard capsule and its preparation method. It is made up by adopting prolanpolysaccharide as main body material and adding gelling agent, coagulant aids, surfactant and humectant through a certain preparation process. Said invention also provides the concrete steps of its preparation method.

The invention provides a film forming compound with modified starch as the main component, a film forming material containing the compound, and more particularly a hard-shell natural capsule made from the compound. The compound contains no or very little animal protein such as gelatin, etc. The compound can partially or completely replace the gelatin from animals for producing natural hard-shell capsules. The prepared natural capsule shell product has the advantages of excellent film forming property, high strength, good flexibility, high transparency, decomposability and microbial pollution resistance. The main component of the compound, modified starch, has stable quality and highly controllable performance.

The invention discloses a preparation method of red rice vermicelli. The red rice vermicelli uses red rice as a main raw material and contains roses, aloe and other nutrients. The red rice vermicelli has multiple health effects of invigorating the circulation of blood and soothing liver, maintaining beauty and keeping young, regulating intestines and stomach, replenishing vitamins required by a human body and the like, and is unique in preparation process. After steaming and baking working procedures, the rice vermicelli is pliable and tough, is not easily subjected to brittle fracture, is good in refreshing degree and smooth in taste, and is suitable for all kinds of people.

The invention provides a method for preparing masterbatch with high powder content. The method comprises the following steps: various raw materials are prepared, a Banbury mixer is kept at constant temperature, all the carriers and 50-80 percent of or all powder components, lubricant, dispersing agent and coupling agent are placed in the Banbury mixer for kneading; after the remained functional components are placed in the Banbury mixer for kneading, the Banbury mixer barn is turned over; the materials are decanted into the feeding hopper of a single screw extruder through a transporting receptacle; by the forced feeding of the feeding hopper, the single screw extruder is used to obtain functional masterbatch with high powder content. The method is capable of solving the problem that feeding is difficult during direct production of high powder when blending modified plastics system is filled, and the problem of difficult processing in the modified plastics industry; the masterbatch with high powder content can also meet the requirements of downstream products, and used to produce injection-moulded or extruded products.

This invention discloses a preparation method of a printable polyimide film. The preparation method comprises the following steps: 1) mixing and stirring 2,5-ortho-dimethyl-4,4'-biphenyldiamine and DMF (dimethyl formamide), and then adding para-diphenyl disulfide tetracarboxylic dianhydride for reaction so as to obtain polyamic acid; 2) diluting polyamic acid obtained in step 1) in DMF, then adding carbon black with a particle size not more than 100 nm and nano-sized activated calcium carbonate to prepare black slurry; and 3) stirring the prepared polyamide acid solution with high activity for 4 hours so as to obtain a black polyamide film by a doctor-blade casting process, and carrying out 4-stage temperature-controlled imidization treatment and 4 times of proportion-predetermined stretching to obtain the polyamide film with thickness of 50 mu m. In the invention, high-activity CaCO3 nanoparticles and carbon black nanoparticles are added while the thermal properties and electrical properties of the polyimide film are maintained, and the polyimide film has the characteristics of good adhesiveness and printability.

The invention discloses a polullan polysaccharide empty hard capsule and a preparation method thereof. The preparation method comprises the following steps: mainly adopting polullan polysaccharide, gel agent, plasticizer, emulsifying agent, latent solvent, water, and the like as raw materials; stirring and dissolving the raw materials in a heating-stirring tank which is vacuumized, heating to form glue, filtering, conveying glue solution into a capsule making machine for making a capsule and finally obtaining the polullan polysaccharide empty hard capsule. The empty hard capsule has the advantages of good quality stability, uneasy friability, stable breakdown index, difficult hydrolysis, no misty and yellowing appearance on the surface while in long-term deposition and can hold solids, oily liquid, semisolids and pasty materials; especially, as the water content of the capsule is lower than that of a gelatine capsule, the capsule is more suitable for being filled with moisture-absorption medicines and aldehydes-containing medicines and has wide market prospect and practical value.

The invention relates to a preparation method of a piezoelectric ceramics-polymer composite material. The method is characterized in that ceramic powder, a dispersant and a curing agent system are added are added in water for mixing, a reaction is initiated to prepare the piezoelectric ceramics biscuit with the strength greater than 10 MPa, and processes of cutting and sintering are carried out. The method comprises the following steps: 1) removing water of the ceramic powder, the dispersant, the curing agent system and fully mixing, defoaming, performing a gel reaction on the ceramic slurry under certain temperature and solidifying to obtain the piezoelectric ceramics gel biscuit with strength greater than 10MPa; and 2) cutting the piezoelectric ceramics biscuit from the step 1), sintering, then filling the polymer, solidifying under room temperature and cutting a pedestal to obtain 1-3 or 2-2 piezoelectric ceramics polymer composite material. The method has the advantages of high reliability, simple required equipment, simple operation, and can be used for preparing the ceramic-polymer piezoelectric composite material with large area and less defect crack.

The invention provides a strand making, strand combining and rope making integrated rope making machine and discloses a novel method for making ropes. The rope making machine is formed by jointing two independent machines, and has the characteristics of high simplicity, high efficiency, high time-saving performance and working procedure reduction. In the invention, all rope making process procedures are made precision, concentrated and efficient; and despite all adopted and related physical and mathematic theories are complex, the required materials are less, the area occupation is small, the requirements on working environment are low, labor intensity is reduced greatly and labor production efficiency is improved; therefore, the machine is more practical, advanced and creative.

The invention relates to a preparation method and applications of a monolithic catalyst used for catalyzing and purifying ammonia-containing waste gas. The monolithic catalyst consists of two parts, namely a honeycomb-shaped metal wiremesh carrier and a catalytic active component, wherein the honeycomb-shaped metal wiremesh carrier material is a FeCrAl stainless steel wiremesh; and the catalytic active component consists of a metal active component and an inorganic oxide carrier; the metal active component is one or more of Ag, Cu, Fe and Mn; and the inorganic oxide carrier is one or more of Al2O3, TiO2, SiO2, ZrO2 and CeO2. The monolithic catalyst has a three-dimensional permeating structure and properties such as higher heat transfer coefficient and mass transfer coefficient and lower pressure drop, is suitable for the installations of various reactors and can be directly applied in the industrial field. For example, the Ag/Al2O3 honeycomb-shaped metal wiremesh catalyst can be used for completely converting NH3 at 220 DEG C and have higher selectivity to N2 (>80%); and the catalyst has high stability and wide operating temperature window and is insensitive to the change of space velocity.

The invention relates to a method for coating a high-temperature corrosion and wear resistant coating layer on a surface of a steel material, and relates to the preparation of a metal-based ceramic composite material coating layer by a high-speed flame spraying method or a gas plasma spraying method. The preparation method of the coating layer comprises the steps of matrix surfaced cleaning, matrix surface sand blasting treatment and powder material spraying. The prepared coating layer has higher compactness, higher hardness, better toughness and excellent oxidation corrosion resistance under the condition of high temperature. The method has simple process steps; and the prepared protective coating layer can enable the steel material to be applied to the higher temperature environment, so that the problem of high-temperature corrosion resistance of the steel material is solved.

The invention discloses a manufacturing method for an ultrathin flexible stone composite board. The manufacturing method comprises the following steps: raw material pre-processing, gluing processing,curing processing, sizing processing, polishing processing, bend-forming processing, and surface coating processing. The invention further discloses the ultrathin flexible stone composite board manufactured by the before-mentioned manufacturing method. The stone composite board is formed by a flexible base layer formed by a flexible base plate, a bonding layer formed by an adhesive, a natural stone layer formed by a natural stone, and a plain protective coating layer formed by a plain coating from inside to outside. The ultrathin flexible stone composite board is capable of bonding the ultrathin natural stone and the flexible base plate, so the whole stone composite board is small in thickness and has the flexibility, is not easy to rupture, can be bended and deformed within a certain bending radius and cannot be broken. The stone composite board can be made as various bending shapes according to the requirements, the stone is greatly saved, and the stone waste is reduced.

The invention provides a polypropylene composition for water-heater inner containers, which comprises the following components in portions by weight: (a) 100 portions of homopolymerized polypropylene; (b) 0.01-10 portions of thermal stabilizer; (c) 0.01-10 portions of processing aid; and (d) 0.01-10 portions of alpha-crystal form nucleating agent and/or beta-crystal form nucleating agent. The processing aid is selected from one or a plurality of low-molecular-weight ester compounds, metallic soap compounds, stearic acid-compounded ester compounds and amide compounds. The polypropylene material of the invention overcomes the defect of insufficient rigidity of the common polypropylene, and has the advantage of high heat distortion temperature; and the tensile strength is greater than or equal to 20 MPa, the elongation at break is greater than or equal to 300%, the bending modulus is greater than or equal to 1200 MPa, and the notch impact strength is greater than or equal to 30 Kj/m<2>.

The invention discloses superfine grinding technology of walnut dregs by a wet process, belonging to the technical field of agricultural products and food processing. The method comprises the process flows of coarse grinding of walnut dregs, mixture of coarsely ground powder of walnut dregs and water and superfine grinding by the wet process by a ball mill, etc. The temperature is not raised in the process of grinding; therefore, the nutrient components of the walnut dregs can not be damaged. In terms of kg/L, the ratio of coarse powder of walnut dregs to water is 1:(8-14). The parameters of the superfine grinding technology by the wet process by the ball mill are as follows: the ball-to-powder weight ratio is (1-6):10, the media are phi10mm zirconia balls, the milk grinding time is 30-120min and d50 of the walnut milk granule is 6-17mu m. The superfine grinding technology lays the foundation for subsequent preparation of walnut powder through spray drying and the application range of the superfine grinding technology in the food industry is broadened.

The invention discloses a phloroglucinol orally disintegrating tablet and a preparation method thereof. The phloroglucinol orally disintegrating tablet is prepared by adopting a powder pelletization and compression method by a wet method and contains a therapeutically effective amount of phloroglucinol and a pharmaceutical excipient, and the excipient comprises a disintegrant; and according to the total weight of the tablet, the content of the phloroglucinol is between 15 and 30 percent, the content of the excipient is between 70 and 85 percent, and the content of the disintegrant is between 3 and 23 percent. The phloroglucinol orally disintegrating tablet has the advantages of higher hardness, simple preparation technology, and remarkable curative effect, is quickly disintegrated within 10 seconds at the soonest when contacting saliva in an oral cavity, and is convenient for patients to take.

The invention discloses a modified master batch for enhancing the toughness of a PPR water supply pipe, wherein the modified master batch comprises the following raw material components in parts by weight: 100 parts of polypropylene resin, 0.01-5 parts of a beta nucleating agent, 1-40 parts of an inorganic filling agent, 1-50 parts of an elastomer, and 0.1-1 part of an antioxidant. The modified master batch disclosed by the invention can take the material toughness, ductility, impact resistance, strength and the like into account, so that the PPR water supply pipe shows excellent comprehensive performance and better processability.

The invention discloses a wear-resistant pressure-resistant epoxy paint, which is characterized by being prepared from the following raw materials by weight: 70-75 parts of E-42 epoxy resin, 2-3 parts of ethylene glycol ethyl etheracetate, 10-12 parts of polyamide resin, 10-12 parts of asphalt, 1-2 parts of 2-methylimidazole, 10-14 parts of phenolic resin, 2-3 parts of dicyandiamide, 16-19 parts of talcum powder, 5-6 parts of barium metaborate, 1-2 parts of nano aluminum oxide, 1-2 parts of dibenzoyl peroxide, 10-12 parts of xylene, 4-5 parts of vinyl acetate, 7-9 parts of ethyl acetate and 3-4 parts of a dispersant. The dispersant involved in the invention improves optical performance, realizes even dispersion of the paint and maintains the stability of the paint. The wear-resistant pressure epoxy paint provided by the invention has the advantages of extremely strong corrosion resistance, rust resistance andsaline-alkaline tolerance on metal, high hardness, wear resistance, pressure resistance and difficulty in brittle fracture, makes up the insufficiencies of a traditional epoxy paint; in addition, the wear-resistant pressure-resistant epoxy paint has simple preparation technology and is particularly suitable for back protection for a metal plate.