40results about How to "Reduced impact on mechanical properties" patented technology

The invention relates to a catalyst for purifying tail gas of diesel automobiles, a preparation method and a purification device thereof. The catalyst comprises a first carrier taking cordierite honeycomb ceramics as a matrix, and a second carrier taking SiC or a cordierite wall-flow structure as a matrix, a first coating and active components on the first carrier, as well as a second coating and active components on the second carrier. In the invention, coating, roasting and reduction processes are adopted for preparing the coatings composed of composite oxides. The catalyst and the device in the invention employ a technology combining a DOC (diesel oxidation converter) and a CDPF (catalyzed diesel particulate filter). By means of the DOC at a front end, HC, CO as well as the soluble organic fractions (SOF) in PM are removed through oxidation. Meanwhile, NO is converted to NO2 that has stronger reducibility so as to be good for the reaction of NO2 and C, thus reaching the purposes of removing NO and lowering the combustion temperature of C simultaneously. Depending on the self-temperatures of diesel automobiles to realize regeneration of a particulate filter, the purification device in the invention has the characteristics of high purification efficiency and convenient usage, etc.

The invention discloses a stirring slag scraping machine used for a molten aluminum mixing furnace. The stirring slag scraping machine used for the molten aluminum mixing furnace comprises a base, a movable platform, a forward stretching mechanism and a stirring slag scraping mechanism; the movable platform is arranged on the base; the forward stretching mechanism is arranged on the movable platform; and the stirring slag scraping mechanism is arranged at one end of the forward stretching mechanism. The stirring slag scraping machine used for the molten aluminum mixing furnace is simple in structure, the slag scraping efficiency of the slag scraping machine is greatly improved, and shaking of the slag scraping machine in the slag scraping process is reduced to the maximum extent; and by means of stirring, dispersed slag in the molten aluminum mixing furnace is precipitated out, and high practicability is achieved.

A non-halogen fire-retarding material for the conduit of electric wire, electric cable or optical cable is prepared from HCPE resin (51-73 wt%), non-haloen composite fire retardant (25-45%), assistant (1-5%) and stabilizer (0.1-2%) through mixing, dual-screw extruding out and granulating. Its advantages are high fire-retarding effect and not releasing a lot of toxic gas.

The invention provides a photo-thermal conversion, heat storage and temperature regulation cellulose fiber with the graphene content of 0.45-1.91 wt%, the zirconium carbide content of 0.47-0.95 wt% and the phase change energy storage microcapsule content of 4.7-9.5 wt%, and further provides a preparing method of the fiber. The preparing method includes the steps of preparing a graphene dispersingsystem, preparing a phase change energy storage microcapsule sizing agent with a photo-thermal material and zirconium carbide, preparing a functional cellulose spinning solution, and conducting spinning. Under the same initial testing conditions and the irradiation of sunlight or an infrared lamp for 15 minutes, compared with an ordinary cellulose fiber, the prepared photo-thermal conversion, heatstorage and temperature regulation cellulose fiber has the temperature raised by 9.7-29.9 DEG C, the visible light absorption rate increased by 30-55%, the fiber enthalpy value of 8.1-15.5 J / g and the fiber phase change temperature of 25.4-36.6 DEG C.

The invention relates to a spider silk-like polymer fiber and a preparation method thereof in the technical field of chemobionics. The spider silk-like polymer fiber comprises the following componentsby weight: 100 parts of a fiber matrix polymer and 1-50 parts of porous particles. The monofilament of the polymer fiber has a spider silk-like microstructure with spindle knot structural units in interval distribution, and the spindle knot structural units have a radial height of 10-300 microns, an axial length of 10-1000 microns, and an interval of 10-5000 microns. The method provided by the invention has no need for substantial change of the existing spinning technology and has no need for change of equipment, the process is simple, and the cost is low. The spider silk-like polymer fiber obtained by the invention can realize directional movement of water droplets on the fiber surface, has water gathering function, and also has good mechanical properties.

The invention relates to a spider silk-like polymer fiber based on column chromatography silica gel and a preparation method thereof in the technical field of chemobionics. The spider silk-like polymer fiber comprises the following components by weight: 100 parts of a fiber matrix polymer and 1-44 parts of column chromatography silica gel. The monofilament of the polymer fiber has a spider silk-like microstructure with spindle knot structural units in interval distribution, and the spindle knot structural units have a radial height of 10-300 microns, an axial length of 10-1000 microns, and aninterval of 10-5000 microns. The method provided by the invention has no need for substantial change of the existing spinning technology and has no need for change of equipment, the process is simple,and the cost is low. The spider silk-like polymer fiber obtained by the invention can realize directional movement of water droplets on the fiber surface, has water gathering function, and also has good mechanical properties.

The invention relates to a method for producing, in a TFP method, one- or multilayer fibre preforms (1, 25) substantially comprising fibre strands (4-16) which are oriented in the force flux direction, arranged on a support layer (2) and attached by fixing threads (17) in such a way that the fibre preform (1, 25) having almost any thickness and devoid of the unwanted support layer (2) is formed. According to said invention, a separating layer (3,26) is applied to the support layer (2) at least by sections and, according to the TFP method, said fibre preform (1, 25) is introduced into a fixingdevice (24), wherein at least one part of the fixing thread (17) is molten by supplied heat and the support layer (2) separated from the fibre preform (1, 25) by the separating layer (3,26) is removed therefrom. The support layer for producing the fibre preform (1, 25) and said fibre preform (1, 25) formed by the inventive method are also disclosed.