60results about How to "Broaden research ideas" patented technology

The invention discloses a synthesis method of a polycarboxylic acid high-performance water reducing agent of a star-like structure, belonging to the field of a water reducing agent. According to the synthesis method, polybasic alcohol, (methyl) acrylic acid, a polyethylene glycol compound and the like are used as esterification raw materials, and the polycarboxylic acid high-performance water reducing agent of the star-like structure is prepared through a sequential esterification and polymerization method, i.e., the (methyl) acrylic acid and the polybasic alcohol are used as reactants, a star-like polymerizable active end is prepared through esterification reaction under the action of a catalyst, and then the polycarboxylic acid high-performance water reducing agent is prepared from the star-like polymerizable active end and esterification macromolecule, a molecular weight regulator and an unsaturated carboxylic acid monomer under the action of an initiator through free radical polymerization reaction. The synthesis method has the advantages of simplicity, easiness in control, high polymerization degree, low cost, no pollution, capability of realizing the polycarboxylic acid high-performance water reducing agent of the star-like structure connected with a plurality of polycarboxylic acid molecules, and more superior cement paste fluidity and holding capacity, good cement adaptability and concrete application performance compared with the conventional linear and comb-shaped polycarboxylic acid water reducing agent in the case of normal and low added amount.

The invention relates to a community-based author and academic paper recommending system and a recommending method. A double-layer quotation network consisting of an author layer and an academic paper layer is formed by utilizing a quotation relation between an author and the academic paper and the community information, then a user interesting model is established according to a historic behavior record of the user and the academic paper set read by the user, finally the user demand is analyzed according to the obtained double-layer quotation network and the user interesting model, and the author and academic paper thereof can be recommended to the user. The system is provided with an academic paper capturing module, an academic paper preprocessing module, a double-layer quotation network establishing module, a user interesting model establishing module and an individualized academic paper recommending module as well as a database. By adopting the recommending system and recommending method, not only can the correlation of the study content among users be used for establishing an author community through a subjective model, but also multiple attribute values of the to-be-recommended author and academic paper inside the community can be calculated, and the weakness that the calculation of the existing recommending algorithm is large can be improved; and meanwhile, multiple attribute values of the author and academic paper can be simultaneously calculated, so that the recommend result is more diversified, and the user requirement can be better met.

The invention relates to a method for preparing a slump loss-resistant type polycarboxylic acid water reducer by silanizing a terminal group of amino polyether. The method provided by the invention takes an amino polyether type compound, a silane coupling agent, an unsaturated carboxylic acid type monomer and the like as main reaction raw materials and a polycarboxylic acid water reducer is prepared through firstly hydrolyzing, substituting, then carrying out condensation, and finally copolymerizing; the method comprises the following steps: firstly hydrolyzing by a halogenated silane coupling agent; then taking the silane coupling agent and the amino polyether type compound to be subjected to substitution reaction; carrying out the condensation on a substituted product and a vinyl silane coupling agent hydrolyzed product; taking a condensed product and unsaturated polyoxyethylene ether, a molecular weight regulator and the unsaturated carboxylic acid type monomer to be subjected to free-radical copolymerization reaction under the action of an initiator to prepare the polycarboxylic acid water reducer with a plurality of branched silane modified polyether side chains. The method provided by the invention has the advantages of simple and easy-to-control process, low cost, energy saving and high efficiency, environmental protection and no pollution; dual modification of the side chains of a main chain of a polycarboxylic acid molecule is successfully realized and more excellent water reduction and slump loss resistance performance, which is better than that of a common polycarboxylic acid water reducer, is represented.

The invention belongs to the technical field of road engineering materials, and in particular relates to a method for preparing prefabricated slope hexagonal protection blocks by regenerating asphalt pavement surface layer milling materials. The technical solution is as follows: it is prepared from the following components, by weight: 18-22 parts of RAP material (0-5mm), 12-14 parts of RAP material (5-10mm), and 12-14 parts of RAP material (10-20mm) 7-9 parts, 0.2-0.25 parts of regenerant, 1-2 parts of fiber reinforcement, 1.6-2 parts of stabilizer, 0.6-0.8 parts of new asphalt, 2-4 parts of rubber powder, 3 parts of anti-corrosion agent 1 to 5 parts, 1.4 to 1.6 parts of waterproof and oil resistant agent, 0.8 to 1.2 parts of rosin, 1 to 3 parts of inorganic nano-ceramic heat-insulating coating. In the present invention, the prefabricated slope hexagonal protection blocks made by special processes such as crushing, screening, recombination and regeneration, prefabrication, and health preservation of waste milling and planing materials are extremely dense, high-strength and durable, with long service life, anti-oxidation, low-temperature anti-cracking, Strong anti-corrosion (salt corrosion) ability.

The invention belongs to the technical field of road engineering materials, and in particular relates to a method for preparing prefabricated drainage channels by regenerating asphalt pavement surface layer milling materials. The technical solution is as follows: It is prepared from the following components, by weight: 20-40 parts of RAP material (0-5mm), 25-30 parts of RAP material (5-10mm), 15 parts of RAP material (10-20mm) 1-25 parts, 0.1-0.4 parts of regenerant, 3-6 parts of fiber reinforcement, 3-5 parts of stabilizer, 1-4 parts of new asphalt, 7-10 parts of rubber powder, 18 parts of anti-corrosion agent ~ 22 parts, 2.5 ~ 3 parts of waterproof and oil resistant agent, 4.2 ~ 6 parts of rosin, 3 ~ 6 parts of inorganic nano-ceramic heat insulation coating. In the present invention, the prefabricated drainage tank made by special processes such as crushing, screening, recombination and regeneration, prefabrication, and health preservation of waste milling and planing materials is extremely dense, high-strength and durable, with long service life, anti-oxidation, low-temperature anti-cracking, and anti-corrosion (salt) eclipse) ability.