45results about How to "Play a capacity-increasing role" patented technology

The invention provides a polycarboxylene high-performance water reducing agent, which is obtained by copolymerization of following monomer components: ester macro monomer, ether macro monomer, micro-molecule monomer and bulking agent. The invention also discloses a preparation method of the polycarboxylene high-performance water reducing agent. The polycarboxylene high-performance water reducing agent of the invention not only can show good adaptability for different concrete construction materials, but also reduces usage of a retarder, improves water-reducing rate, and has good bleeding rate and compressive strength rate. The product has more stable quality; the shortcomings that the polycarboxylene product in the prior art has single type and narrow adaptability is overcome.

The invention discloses an epoxy nanocomposite based on polyhedral oligomeric silsesquioxanes (POSS) and a preparation method of the epoxy nanocomposite based on the POSS and relates to the epoxy nanocomposite with a controllable phase structure capable of improving effect and based on the POSS. The preparation method includes the following steps of allocating a POSS monomer, a chain transfer agent and an initiating agent in a solution according to the measuring amount through a reversible addition-fragmentation chain transfer (RAFT) method, conducting freeze thaw and degassing through liquid nitrogen, charging argon shield to enable the mixture to react, and obtaining PMAiBuPOSS; further allocating PMAiBuPOSS, Methl Methacrylate monomer (MMA) and an initiating agent in a solution, and obtaining POSS base block copolymer , namely, PMAiBuPOSS-b-PMMA, through the RAFT; conducting melt blending on the POSS monomer, epoxy resin, the prepared POSS base block copolymer to obtain blend precursor of the POSS and the epoxy, adding in a curing agent, fully stirring, dissolving the mixture the curing agent, pouring the blend into a die, conducting temperature programming and curing, and obtaining the nanocomposite with the controllable phase structure and based on the POSS.

A process for lowering the vitrifying temp of acrylate rubber features that the emulsion of acrylate rubber is grafted by acrylate and low-molecular polyester or polyether to generate a graft copolymer. Its advantage is high effect to lower the vitrifying temp.

The invention belongs to the technical field of material processing, and provides a preparing method of a high-performance LDPE-g-(DAP-co-GMA) capacity-increase LDPE / PET microfiber strengthened blend. The method includes the steps that LDPE serves as a continuous phase, PET serves as a dispersion phase, diallyl phthalate and glycidyl methacrylate cograft LDPE graft LDPE-g-(DAP-co-GMA) is adopted as a novel bulking agent, the LDPE / PET capacity-increase blend is prepared, the PET disperse orientation and fiber forming are carried out, the structure is better preserved in a follow-up product, and therefore the aim of strengthening the LDPE through PET microfibers on site is achieved. By means of the method, the LDPE mechanical property can be obviously improved, and the preparing method is of important significance in expanding the application field of the LDPE.

The invention provides an in-situ compound type core-shell toughener and a preparation method thereof, and belongs to the technical field of plastic modifying. The core-shell toughener comprises the following components in parts by weight: 180 to 270 parts of soft monomer, 30 to 120 parts of hard monomer, 1.5 to 6 parts of multi-activity monomer, and 1.5 to 3 parts of inorganic matter; the soft monomer is acrylic monomer. The invention also provides the preparation method of the in-situ compound type core-shell toughener. The in-situ compound type core-shell toughener has the advantages that the impact modifying property is good, and the apparent density is higher; after proofing by experiment results, the maximum apparent density value is 0.45g / cm<3>.

The invention provides a gasoline detergent, a preparation method, and applications thereof. The gasoline detergent comprises polyether amine with a surface activity, a gasoline octane value improver, and alkane solvent naphtha, wherein by taking the volume percentage of the gasoline detergent as the baseline, the volume percentage of the polyether amine is 30-70 vol%, the volume percentage of the gasoline octane value improver is 3-20 vol%, and the volume percentage of the alkane solvent naphtha is 25-60 vol%. The gasoline detergent can more effectively remove the carbon deposition on the oil nozzle, combustion chamber, and intake valve of a motor, improves the economic profit of fuel combustion, reduces the gasoline consumption, prevents the motor wear, prolong the service life of the motor, and decreases the maintenance fee. The cost of the gasoline detergent is low, because an ideal effect can be achieved by using only a few amount of the gasoline detergent.