41results about How to "Improve antifreeze ability" patented technology

The invention discloses a fruit / vegetable freezing point composite modifier and a using method of the fruit / vegetable freezing point composite modifier, and provides a fruit / vegetable freezing point composite modifier capable of widening the range of fruit / vegetable ice temperature and a using method of the fruit / vegetable freezing point composite modifier. The fruit / vegetable freezing point composite modifier consists of 3.0-5.5% of calcium chloride solution, 0.5-2.0% of vitamin C solution and 0.3% of delta-glucolactone solution at a volume ratio of 1:1:1. The using method comprises the following steps of: putting the pre-cooled fruit / vegetable and the fruit / vegetable freezing point composite modifier at a weight ratio of 1:(4-6) into a vacuum steeping container for vacuum steeping; and after breaking vacuum, steeping again under normal pressure. The method combines a composite modifier with the vacuum steeping technology, realizes proper balance condition of the matching of the freezing point modifier type, between the modifier concentration and the processing time, between the vacuum degree and the keeping time and the like, can reduce the fruit / vegetable freezing point to 0.5-1.0 DEG C, realizes an obvious control effect on the fruit / vegetable freezing point, and is suitable for the field of fruit / vegetable circulation and storage.

The present invention is to provide an inner surface coating of an aluminum food packaging container and a production method thereof. The invention relates to the technical field of easy-open lid production, and in particular to an inner surface coating of an aluminum food packaging container. It is characterized in that it consists of the following: Component composition in weight percentage: modified acrylic resin 13~30%, polyester resin 33~60%, amino resin 5~15%, fumed silica 1.5~5%, leveling defoamer 0.5~5, diluted 30~60% of the agent, the present invention does not contain BPA, because the product is an organic solvent-based coating, it has a strong anti-freezing ability, and has the characteristics of cooking resistance, aging resistance and corrosion resistance.

The invention discloses a heat exchanger with a double-shell structure. The heat exchanger with the double-shell structure comprises an outer shell body, an inner shell body and a heat exchange core arranged in the inner shell body, wherein the inner shell body comprises an inner shell with an opening and an inner shell cover plate arranged at an opening end and detachably connected to the inner shell; the outer shell body comprises an outer shell with an opening and an outer shell cover plate arranged at an opening end and detachably connected to the outer shell; the inner shell is sleeved in the outer shell; the inner shell cover plate is sleeved in the outer shell cover plate. That is to say, in the invention, the inner and outer shell bodies can be detached from each other, and the inner and outer shell bodies per se also can be detached, so that the heat exchanger is convenient for cleaning and replacement of a heat exchange core mounted inside the heat exchanger, and avoids damage to the inner and outer shell bodies; meanwhile, a heat insulating material is filled between the inner shell and the outer shell, so that heat-retaining capacity of the heat exchanger per se is enhanced, heat leakage can be prevented, and anti-freezing capability of the heat exchanger is enhanced.

The object of the present invention is to further improve the dust suppression performance of the antifreeze type dust suppressant, provide a low freezing point wetting type dust suppressant and a preparation method thereof, which belong to the technical field of dust suppressant. The mass percent content of each raw material component of the dust suppressant of the present invention is: sodium lactate: 0.1-2%, polyacryl alcohol: 0.1-6%, glycerin: 2%-10%, binder: 0.1-5%, Epoxy resin: 0.2-2%, surfactant: 0.1-1%, emulsion: 0.1-3%, water: balance. The dust suppressant of the invention is reasonable in price, easy to popularize and use, wide in source of raw materials, easy to implement, non-toxic, tasteless, non-corrosive, easy to spray and the like. It can be used to suppress dust in exposed areas such as mine roads, urban roads, municipal construction, coal mine transportation, and storage yards.

The invention relates to the technical field of environment pollution treatment, and concretely relates to a liquid road dust suppressant and a preparation method thereof. The liquid road dust suppressant is prepared through mixing 2.5-7.5 wt% of a hygroscopic agent, 0.5-4.0 wt% of an osmotic agent, 0.1-5.0 wt% of a film forming agent, 0.5-2.0 wt% of an additive, and the balance water; the hygroscopic agent is a calcium chloride, active alumina and sodium silicate mixture, and a mass ratio of the calcium chloride to the active alumina to the sodium silicate is 2:1:2; the osmotic agent is sodium dodecyl benzene sulfonate; the film forming agent is aqueous polyurethane-acrylic acid copolymer resin; and the additive is sodium lignosulfonate. The dust suppressant has the advantages of high film strength, good freeze resistance, suitableness for the low temperature environment, nontoxic and harmless components, and environmental protection.

The invention relates to a waterborne adhesive for an automobile filter and a preparation method of the waterborne adhesive. The adhesive comprises the following components in parts by weight: 40-80 parts of hydrophilic polymer emulsion, 10-20 parts of enhancer, 1-3 parts of stabilizer, 1-4 parts of thixotropic agent, 1-2 parts of silyl ether, 20-30 parts of glycerin, 0.05-1 part of zinc oxide and1-3 parts of sodium dodecyl sulfate. The adhesive is curable at normal temperature, high in drying speed, good in water resistance, high in bonding strength, stable in property, few in influences from temperature and humidity, free of releasing solvents, green, environment-friendly, nontoxic and safe in use.

The invention discloses a closing mechanism of a high-voltage isolating switch, which includes a static contact assembly and a moving contact assembly. The static contact assembly includes a conductive plate and a static contact. One end of the static contact is fastened to the On the conductive plate, the moving contact assembly includes a ring-shaped moving contact, the ring-shaped moving contact is installed on the inner wall of the upper conductive tube of the isolating switch, and the movement of the ring-shaped moving contact in the upper conductive tube The lower sleeve is set on the outer wall of the static contact to realize closing; the static contact assembly and the moving contact assembly are both provided with a sealing assembly to isolate it from the outside air. The closing mechanism of the high-voltage isolating switch of the present invention has the advantages of simple structure, reliable action and antifouling and antifreezing functions.