49results about How to "Excellent volatility resistance" patented technology

A lube base oil satisfying at least one of the following requirements (a) and (b). A lubricating oil composition for internal combustion engines is provided which comprises the lube base oil, an ash-free antioxidant containing no sulfur as a constituent element, and at least one member selected among ash-free antioxidants containing sulfur as a constituent element and organ omolybdenum compounds. Also provided is a lubricating oil composition for drive transmission devices which comprises the lube base oil, a poly(meth)acrylate-type viscosity index modifier, and a phosphorus compound. (a) The content of saturated matters is 90 mass% or higher and the proportion of cyclic saturated matters in those saturated matters is 10-40 mass%. (b) The lube base oil satisfies the relationship represented by the following expression (1). 1.440=n20-0.002OEv100=1.453 (1) [In the expression, n20 indicates the refractive index at 20 DEG C of the lube base oil and kv100 indicates the dynamic viscosity (mm2/s) at 100 DEG C of the lube base oil].

The invention belongs to the field of polymer materials, and particularly relates to a PLA (polylactic acid) biodegradable thin film and a preparation method thereof. The PLA biodegradable thin film is prepared from the following components of PLA, PBSA (poly(butylene succinate-co-adipate)), PBC (polypropylene carbonate), a plasticizer, a lubricant and a pore forming agent. The preparation methodcomprises the following steps of mechanically mixing the PLA, the PBSA, the PBC, the lubricant and the pore forming agent; adding the mixed raw materials into a material hopper of a double-screw extruder; metering the plasticizer by a metering pump, adding via a liquid adding port of the extruder, starting the solid charge and liquid charge, smelting, extruding and granulating, so as to obtain thePLA resin material; performing blow molding and film forming on the PLA resin material, so as to obtain the PLA-based thin film. The PLA-based thin film has the advantages that the mechanical property is better, and the transparency is good; the complete biodegradable effect is realized; the PLA-based thin film can be used for replacing PE (polyethylene), PP (polypropylene), PVC (polyvinyl chloride) and the like to prepare thin films and sheets.

The invention provides a polylactic acid (PLA)/ poly(butylene succinate-butylene adipate) (PBSA) blown film and a preparation method thereof. The blown film comprises a mixture of PLA, PBSA, plasticizer diethylene glycol monobutyl ether adipate, a lubricant, a plastic lubricant and an antioxidant. The PLA, the PBSA, the lubricant, the plastic lubricant and the antioxidant are first mechanically mixed into a premix, the premix is added through a feeding port of a twin-screw extruder, meanwhile the plasticizer diethylene glycol monobutyl ether adipate is metered and added in through a liquid feeding port of the twin-screw extruder, modified polylactic acid blown film special resin is prepared by melt-extruding, water-cooling, pelletizing and drying, the modified polylactic acid blown film special resin is blown by a film blowing machine to form a transparent tear-resistant biodegradable film. The PBSA, the plasticizers, the lubricant, the plastic lubricant and the antioxidant can effectively increase the tensile elongation at break and tear strength of polylactic acid films, maintains the transparency of the polylactic acid, and solves the brittleness defects of the polylactic acid films. The polylactic acid (PLA)/ poly(butylene succinate-butylene adipate) (PBSA) blown film has good mechanical properties and excellent transparency, and can replace PE, PP, PVC and the like for preparation of films and sheets.

The invention discloses an epoxy resin curing agent and a preparation method thereof. The epoxy resin curing agent comprises the following raw materials in parts by weight: 3-5 parts of a component A,3-5 parts of a component B and 30-50 parts of carbon nanotubes. The component A has very good volatility resistance and does not volatilize in a use process, so that a user is protected from being forced to suck and injure a human body; the component B is an acrylic microsphere emulsion prepared from methyl methacrylate and butyl acrylate as raw materials; the acrylic resin has good water resistance; further, tetraethoxysilane is used to connect the surface of acrylic acid with nano-silicon, and then the gamma-aminopropyltriethoxysilane is hydrolyzed to generate silanol, which reacts with active groups on the surface of the acrylic acid/nano silicon composite microsphere to generate silicon-oxygen bonds to improve the water resistance effect, so that the component A and the component B are further embedded into the curing agent prepared from the carbon nanotubes, and the curing agent has good water resistance and is not prone to volatilization, and the strength of the epoxy resin canbe improved.

The invention discloses a high-carbon steel surface corrosion resistant non-spangle type hot dipping Y containing zinc alloy and a machining technology thereof. The alloy is prepared from the ingredients, in percentage by weight: 0.8-1.0% of Li, 0.2-0.5% of Y, 1.0-2.0% of Si, 1.0-1.5% of In, 0.2-0.3% of Sc, 0.1-0.2% of Er and the balance of zinc. The development of the alloy can solve the phenomenon that spangles occur on the surface of a plating piece in the industrial hot dipping galvanizing process. The alloy has the characteristics of being low in production cost and convenient for scale production.

The invention provides a macromolecule antioxidant which is compounded by fortified phenol and chlorinated polyethylene in the mass ratio of(5-50): 100. After the fortified phenol and the chlorinated polyethylene are compounded, a great deal of hydrogen bonds exist between the fortified phenol and the chlorinated polyethylene, the interaction between the fortified phenol and the chlorinated polyethylene is enhanced, therefore, the macromolecule antioxidant having better volatility resistance, transport property resistance and thermal stability is obtained. Secondly, according to the invention, the fortified phenol and the chlorinated polyethylene which are low in costs are adopted and mixed to obtain the macromolecule antioxidant, therefore, the preparation technology is simple. In addition, the macromolecule antioxidant is unlikely to form quinonoids and unlikely to change color.

The invention discloses a hot-dipped galvanized aluminum alloy containing Mg and Ca for a fishery steel wire under the marine environment. The hot-dipped galvanized aluminum alloy comprises the ingredients of, in percentage by weight, 0.3-0.5% of Ca, 2.0-4.0% of Mg, 0.3-0.5% of Ti, 1.0-3.0% of Sn, 30.0-42.0% of Al, 0.5-0.8% of Cr and the balance zinc. The hot-dipped galvanized aluminum alloy for the marine fishery steel wire can be used at the temperature of 420-480 DEG C, and better corrosion resistance is achieved compared with a traditional hot-dipped coating. The hot-dipped galvanized aluminum alloy has great significance to prolonging of the service life of the marine fishery steel wire.

The invention belongs to the technical field of pesticides, and relates to an auxiliary agent composition with drift resistance and synergy. The auxiliary agent composition is characterized in that drift of a medicine liquid can be reduced during a spraying process; the transpiration time of the medicine liquid on the surface of a plant is prolonged; and therefore, the utilization rate of the medicine liquid is improved, the control effect is improved, and adverse effects caused by the drift to environment and surrounding crops are reduced; volatilization resistance capability is good; evaporation of the medicine liquid on the surface of a leaf surface is effectively reduced; the effect time of a drug is prolonged; and overall efficacy and prevention and control capability are improved.

The invention discloses a chloride-salt-containing protective agent with oxidation resistance for a lead hath furnace and a processing technology thereof. The alloy comprises, by weight, 10.0%-12.0% of NaCl, 4.0%-6.0% of BaCl2, 2.0%-5.0% of MgCl2, 1.0%-3.0% of AlCl3, 2.0%-4.0% of B2O3, 1.0%-2.0% of MnO and the balance CaO. Through development of the protective agent, the difficult problems existing in lead bath heat treatment technological applications can be solved, it plays a vital effect on popularization of lead bath heat treatment, and it is of great economic significance to industrial production.

The invention discloses an Os-containing zinc alloy for hot-dip galvanizing of corrosion-resisting spangle-free low-carbon steel and a processing technology of the Os-containing zinc alloy. The Os-containing zinc alloy is prepared from the following components in percentage by weight: 0.5 to 1.2 weight percent of Li, 0.5 to 0.8 weight percent of Os, 0.2 to 0.6 weight percent of Ta, 2.0 to 3.0 weight percent of Si, 0.5 to 0.8 weight percent of Sc, 0.4 to 0.6 weight percent of Sm and the balance of zinc. The development of the alloy can be used for avoiding the phenomenon that spangles generat on the surface of plating parts in the industrial hot-dip galvanizing production. The Os-containing zinc alloy for the hot-dip galvanizing of the corrosion-resisting spangle-free low-carbon steel alsohas the characteristics of low production cost and facilitation for large-scale production.

The invention discloses surface slag type steel plate hot-dip galvanized aluminum Ca-Al-Bi zinc aluminum alloy and a processing technology thereof. The alloy comprises the following elements of, by weight, 0.4-0.6wt.% of Ca, 0.2-0.4wt.% of Na, 0.3-0.5wt.% of In, 0.5-0.8wt.% of Co, 30.0-38.0wt.% of Al, 0.6-0.8wt.% of Bi, and the balance zinc. The alloy can be used for hot-dip galvanizing of a steelplate at 320-340 degree, and has better corrosion resistance compared with traditional pure zinc hot dipping. The technology can be used for hot-dip galvanizing protection of steel for an ocean platform, and can be widely applied in more hot-dip galvanizing situations with more engineering application fields expanded.

The invention discloses a Re and Ge-containing bismuth bath alloy for thermal treatment of high work efficiency leadfree troostite and a processing technology thereof. The Re and Ge-containing bismuthbath alloy is prepared from the following components in percentage by weight: 1.0-1.5wt.% of Ba, 0.5-1.4wt.% of Re, 2.0-2.5wt.% of Ge, 0.2-0.4wt.% of Sc, 0.4-0.5wt.% of Pr, 1.5-2.0wt.% of Ni and thebalance of bismuth. The bismuth alloy replaces a lead bath alloy for thermal treatment, so that contact of a steel wire and air is limited to prevent decarbonization. Compared with common heating methods, the hardness of the surface of the steel wire is improved, the probability of crack formation and expansion is reduced, and the fatigue performance of the steel wire is improved.

The invention discloses a high-heat-conductivity Ca and Mg-contained zinc alloy for ceramic crucible hot-dip galvanizing and a preparation process thereof. The alloy comprises the following componentsin percentage by weight: 0.2-0.5 wt.% of Ca, 1.0-1.2 wt.% of Sn, 1.0-3.0 wt.% of Mg, 0.2-1.2 wt.% of Ge, 0.2-0.4 wt.% of Cu, 0.1-0.2 wt.% of Mo, 1.2-1.4 wt.% of Ni, 1.0-5.0 wt.% of W, and the balanceof zinc. The alloy for hot-dip galvanizing is suitable for a ceramic crucible production process in hot-dip galvanizing; and the product achieves the effects of reduction of abnormal consumption of zinc and cost saving.

The invention discloses novel Nb-containing zinc alloy for low-carbon steel hot dip galvanizing without spangle on surface and a processing technology of the novel Nb-containing zinc alloy. The alloyis prepared from the following components in percentage by weight: 0.8-1.2wt% of Li, 0.2-0.6wt% of Nb, 0.4-0.8wt% of W, 1.5-2.0wt% of In, 1.0-2.0wt% of Sc, 0.2-0.4wt% of Th and the balance of zinc. Development of the alloy can solve the phenomenon that spangles are generated on the surface of a plating piece in industrial hot dip galvanizing production and also has the characteristics of low production cost and convenience in large-scale production.

The invention discloses a volatility-resistant chloride covering agent with high heat capacity and used for heat treatment lead bath, and a processing technique thereof. The alloy comprises the following components in percentage by weight: 10.0wt.%-12.0wt.% of LiCl, 6.0wt.%-8.0wt.% of SrCl2, 2.0wt.%-5.0wt.% of CaCl, 10.0wt.%-15.0wt.% of KCl, 2.0wt.%-5.0wt.% of B2O3, 2.0wt.%-3.0wt.% of FeO and thebalance CaO. Through development for the covering agent, the problems in the application of a lead bath heat treatment technique are solved, a crucial role is played on the popularization of lead bathheat treatment, and great economic significance is achieved for industrial production.