104results about How to "Improve usage characteristics" patented technology

The invention provides modified alkyd resin and a preparation method of the modified alkyd resin. The modified alkyd resin is prepared by carrying out a reaction on an alkyd mixture, wherein the alkyd mixture comprises 15-25 parts by weight of 3, 5, 5-trimethyl hexanoic acid; 3-9 parts by weight of 1, 2-propanediol, 25-35 parts by weight of phthalic anhydride; 0.35-0.75 part by weight of maleic anhydride, 18-24 parts by weight of trimethylol propane, 2-5 parts by weight of pentaerythritol, 2-4 parts by weight of water aqua, 0.05-0.2 part by weight of subtractive antioxidant and 14-16 parts by weight of letdown solvent. Because the 3, 5, 5-trimethyl hexanoic acid replaces cocinic acid and lauric acid to modify alkyd resin, a finish film has excellent fullness, gloss and yellowing resistance and is easy to use. The invention further provides a two-component glossy white finish.

The invention discloses a protection method for an outdoor willow furniture product. The protection method comprises the following steps: (1) preparation of a protection paint; (2) pretreatment of a willow product; (3) protection treatment. The protection paint in the protection method has an excellent use characteristic, the adsorbability of the protection paint and the willow product is further improved through a reasonable spraying method, and the protection paint on the surface of the willow product does not fall off or degrade even under the weather with bad environmental change. According to the outdoor willow furniture product treated by the method, the characteristics of inflaming retarding, smoke inhibition, corrosion prevention, mould prevention, insect prevention, antisepsis and loss resistance are well strengthened, the surface of the outdoor willow furniture product is smooth and has no wrinkle, the bending strength is improved by 20-30%, the compressive strength is improved by 15-20%, and the protection method has a high use value.

An object of the present invention is to provide a one-pack type dental adhesive composition which can exhibit excellent adhesion to any material, for example, dental ceramics, organic composites containing inorganic compounds, dental noble metals and dental non-noble metals, and also has excellent storage stability.

Disclosed is a one-pack type dental adhesive composition comprising a silane coupling agent as a component (a), an acidic group-containing polymerizable monomer as a component (b), a sulfur atom-containing polymerizable monomer as a component (d), and other components.

The invention provides a preparation process of modified chlorinated polyethylene for a rubber plastic material and belongs to the technical field of chlorinated polyethylene for the rubber plastic material. Universal chlorinated polyethylene is grafted and modified, and modified chlorinated polyethylene is obtained. The preparation process comprises steps as follows: A, swelling treatment: universal chlorinated polyethylene, an initiator, a grafting monomer, a swelling agent and deionized water are added to a reactor in a proportion for swelling treatment; B, dispersing treatment: deionized water and a dispersing agent are added to a product obtained after swelling treatment in the step A in a stirring state for dispersing treatment, nitrogen gas is introduced into the mixture, the mixture is heated for a reaction, and a modified chlorinated polyethylene crude product is obtained; C, purification treatment: the modified chlorinated polyethylene crude product obtained in the step B is extracted, the extracted product is dried to reach a constant weight, and modified chlorinated polyethylene is obtained. The modified chlorinated polyethylene obtained through grafting and modification is added to a plastic rubber material, and the performance of the plastic rubber material is greatly improved.

The invention discloses a VNC console optimization scheme of virtual machines in a cloud computing environment. VNC console proxy and an SSH encryption tunnel are established, encryption, forwarding and shunting are carried out on VNC data packets, a virtual machine console is used in a multi-network environment, double-mouse phenomena are eliminated by writing an Applet program, the function of virtual machine console monitoring is added, wide-to-height proportions of desktops of the virtual machines are zoomed by means of a graphic algorithm, the desktops of the multiple virtual machines are monitored in the same view, and a administer of a cloud data center is helped to monitor use situations of the virtual machines. Existing VNC source codes are optimized and can be well applied to the cloud computing environment, the console optimization scheme is suitable for the multi-network environment, VNC safety is improved, using characteristics of the VNC console desktops are further optimized, and the function for monitoring the desktops of the virtual machines is enriched.

A hose connection piece (2), on which a sleeve-shaped insertion part (15) is arranged in the region of the outlet (14) of the passage channel (13) formed by a hose nipple (5) of the hose connection piece (2) and which is to be fastened on the nipple base body (12) of the hose nipple (5) by a snap-action or latching connection (16). The insertion part (15) can carry a sealing ring (7) for the contact flange (6) of the hose nipple (5) and/or axially secure a backflow preventer cartridge (26) which is introduced into the receiving space (25) of the hose nipple (5).

The invention provides modified alkyd resin and a preparation method thereof. According to the method, alkyd compounds react to obtain the modified alkyd resin. The alkyd compounds comprise, by weight, 25-35 parts of tertiary carbonate glycidyl ester, 38-42 parts of glycerol, 190-230 parts of soya oil acid, 25-35 parts of ethanediol, 240-280 parts of phthalic anhydride, 30-38 parts of trimethylolpropane, 80-120 parts of pentaerythritol, 16-40 parts of agents with water, 1-2 parts of subtraction colour antioxidants, 230-260 parts of diluted solvent, and 0.5-1.5 parts of antiager. Conventional raw materials of the soya oil acid, the pentaerythritol and the like are adopted to prepare the alkyd resin, and the tertiary carbonate glycidyl ester is adopted to modify the alkyd resin, so a paint film performances well in the aspects of gloss, definition, collapse resistance and the like. The invention further provides two-component primer.

Disclosed is a tubular casting. The tubular casting comprises a tubular body and an accommodating cavity formed in the middle of the tubular body. The tubular body comprises a cast pipe and a die-cast pipe, wherein the cast pipe is provided with a first circumferential surface and a first inner circular surface, the die-cast pipe is provided with a second circumferential surface and a second inner circular surface, and the second inner circular surface of the die-cast pipe covers the first circumferential surface of the cast pipe. The invention relates to a production process of the tubular casting. The method comprises performing primary casting molding on a sand core to obtain the cast pipe and then taking the cast pipe as the inner core of a die-casting process. Due to the fact of being made of a surface-dense light metal alloy structure, the cast pipe can bear high pressure generated by the die-casting process when serving as the inner core relative to the relatively structurally loose sand core and can ensure no deformation to reduce the rejection ratio of tubular casting products produced through the die-casting process, so that the die-casting process can be widely applied to producing the tubular casting and have a wide application prospect.

The invention discloses a method for producing alkyd resins by recycling esterification waste water of the alkyd resins and application of the alkyd resins. The alkyd resins are produced by the following raw materials in parts by weight: 160-180 parts of soya oil acid, 25-30 parts of benzoic acid, 3-5 parts of maleic anhydride, 250-280 parts of phthalic anhydride, 110-130 parts of pentaerythritol, 160-200 parts of recycled extracts of the esterification waste water of the alkyd resins, 20-30 parts of reflux dimethylbenzene, 250-280 parts of diluted dimethylbenzene and 1-3 parts of subtractive colour antioxidants. On the one hand, the useful substances in the esterification waste water are effectively recycled to produce the alkyd resins, thus lowering the resin formula cost, and on the other hand, after the raw esterification waste water is treated by the preparation method of the invention, COD of the distilled waste water is reduced from the number more than 200000 of the raw waste water to the number less than 3000 and BOD is reduced from the number more than 50000 of the raw waste water to the number less than 1000, thus improving the treatment capacity of biochemical sewage and lowering the treatment expenses.

The invention relates to a method for producing a magnesium hot strip, in which a melt from a magnesium alloy is continuously cast to form a roughed strip with a thickness of maximum 50 mm, and in which the cast roughed strip is hot-rolled directly from the cast heat at a hot-rolling initial temperature of at least 250° C. and maximum 500° C. to form a hot strip with a final thickness of maximum 4 mm, whereby in the first hot-rolling pass a reduction in the thickness of at least 15% is achieved. With the method according to the invention, magnesium sheets with improved deformability can be produced with reduced manufacturing effort and expenditure.

The invention discloses acrylic resin with the self-crosslinking characteristic and a preparation method thereof. The acrylic resin is made from the raw materials with the following weight percentage of 25 percent to 30 percent of normal butanol, 10 percent to 16 percent of dimethylbenzene, 2 percent to 5 percent of pom, 4 percent to 7 percent of acrylamide, 12 percent to 18 percent of butyl methacrylate, 15 percent to 20 percent of butyl acrylate, 2 percent to 5 percent of acrylic acid, 12 percent to 16 percent of styrene, 0.1 percent to 0.3 percent of U626 antioxidants, 0.6 percent to 1.5 percent of BOP and 4 percent to 8 percent of butyl acetate. The invention can self cross link to form indissoluble and non-fusible coatings under a certain roasting temperature without the addition of cross linking agents due to containing the self-crosslinking groups, also can coordinate with the resin containing epoxy groups, hydroxyl groups and carboxy groups to prepare the coatings with different performances, therefore, the invention has the excellent application characteristic, and has a wide application range.

The invention discloses a modified treatment method for a ramie fiber for knitted goods. The method comprises the following steps: (1) cleaning treatment; (2) steam explosion treatment; (3) soaking treatment; (4) irradiation treatment; and (5) oxidation treatment. Specific modified treatment is carried out on the ramie fiber, so that the use characteristic of the ramie fiber is effectively improved, meanwhile, the problems of over-high weight loss ratio and serious mechanical property damage are also solved, and the modified treatment method has good promotional value.

The invention provides a crawler-type sleigh composite walking polar region robot. A position-changing crawler walking mechanism comprises four independent walking crawlers and a crawler rocker arm support. The walking crawler comprises a crawler belt body, driving wheels, supporting wheels and guide wheels. The crawler belt surrounds the driving wheels, the supporting wheels and the guide wheels,the driving wheel rotates in the mode that a hollow shaft is connected with a speed reducer shaft, the crawler rocker arm support rotates in the mode that a solid shaft located in the hollow shaft rotates, and different crawler advancing movement modes are achieved by controlling locking of a front guide wheel shaft and a rocker arm shaft. A sail sleigh mechanism comprises a sail at the top of arobot body and a sleigh at the bottom and capable of ascending and descending freely. The sail at the top can ascend and descend through a gear motor, the sleigh at the bottom can pop up from the bottom of the vehicle body, the angle of the sleigh is adjusted, and the pitching degree of the robot is further adjusted; the vehicle body can still be kept horizontal when the robot runs on an inclinedroad surface, and therefore it is guaranteed that instruments in the vehicle body can normally run.

The invention relates to a waterproof roll with multilayer structure, comprising a plastic substrate, asphalt or modified asphalt layers and a color nano fluorine-silicon-acrylate layer and a faying surface plastic side membrane; wherein, the first layer of the asphalt or modified asphalt layers and the color nano fluorine-silicon-acrylate layer are coated in sequence on the upper surface of the plastic substrate, and the faying surface plastic side membrane is compounded on the upper surface of the asphalt layer or the modified asphalt layer on the two sides of the color nano fluorine-silicon-acrylate layer; wherein, the thickness of the asphalt layer or the modified asphalt layer is 0.3-6.0mm; the thickness of the color nano fluorine-silicon-acrylate layer is 0.1-1.0mm. The waterproof roll with multilayer structure of the invention has colors on the surface, can prevent the erosion of strong solar ultraviolet and other harmful gases in the air, suppress the volatilization of the toxic gas in the asphalt under high temperature, improve the environment and be wholesome to the society. The waterproof roll can improve the service life of the asphalt or modified asphalt waterproof rolls, and can be taken as an environmental protection product with double functions of waterproofing and decorating and beautifying the environment.

The invention discloses a fishing net thread use quality improvement processing process. The process includes steps: (1) cleaning and deoiling treatment; (2) phosphoric acid solution soaking treatment; (3) treating fluid A soaking treatment; (4) ultraviolet irradiation treatment; (5) treating fluid B soaking treatment; (6) flushing and drying treatment. By special processing of fishing net threads, under joint actions in each step, the grafting effect of the fishing net threads is evidently improved, utilization characteristics of the fishing net threads are improved, and the finally treaded fishing net threads are high in coating compatibility, corrosion resistance, strength and comprehensive quality, thereby being high in popularization and utilization value.

A seal including a tubular carrier body (1) and two annular sealing elements (2, 3), wherein the carrier body (1) on both sides of its front face is respectively enclosed by one of the sealing elements (2, 3) on the side of its outer perimeter forming a seal. At least one of the sealing elements (2, 3) is made of a non-elastomeric high-temperature resistant sealing material.

The invention belongs to the technical field of plastics and particularly relates to a novel plastic raw material. The novel plastic raw material comprises, by weight, 15-20 parts of concentrated titanium dioxide, 70-75 parts of poly carbonate (PC) plastic raw material, 0.5-0.8 part of flexibilizer, 8-10 parts of color powder, 0.5-0.8 part of antioxygen and 1-2 parts of fire retardant. The concentrated titanium dioxide, the PC plastic raw material, the flexibilizer, the color powder, the antioxygen and the fire retardant in different weight parts are mixed and processed to form the novel plastic raw material, the novel plastic raw material has the advantages of good shading effect, fire resistance and overall performance, high ageing resistance and ultraviolet resistance and excellent using features, market requirements of a light-emitting diode (LED) lamp industry can be perfectly met, actual usage is facilitated, and the novel plastic raw material can also be used for household appliances and the like.

The invention discloses a surface electroplating processing technology for an automobile safety belt buckle. The surface electroplating processing technology comprises the following steps of (1) buckle cleaning treatment, (2) surface activating treatment and (3) nickel electroplating treatment. According to the surface electroplating processing technology, reasonable adjustment and improvement are conducted on the surface electroplating processing technology for the safety belt buckle, a special composite coating is deposited on the surface of the buckle through electroplating, corrosion resistance, abrasion resistance, impact resistance and other characteristics of the safety belt buckle are well enhanced, the comprehensive operating characteristic is good, and popularization value is high.