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165results about How to "Anti-rust for a long time" patented technology

Antirust and preparation method and application thereof

The invention discloses an antirust and a preparation method and an application thereof. The antirust comprises corrosion inhibitor, film-forming agent, dispersant, synergist with active groups on the surface, and solvent; the weight ratio of the corrosion inhibitor, the film-forming agent, the dispersant and the synergist with the active groups on the surface is 1:0.005 to 0.5:0.002 to 0.4:0.001 to 0.3, and the weight ratio of the solvent to the corrosion inhibitor is 100:0.01 to 50. Modifier is added into the antirust disclosed by the invention to carry out surface modification treatment on the synergist, so that the surface of the synergist is grafted with the active functional groups, such as -OH and -NH3, consequently, the binding force between the antirust and a base material is enhanced, the antirust time is prolonged, and thereby the antirust effect is enhanced. The antirust disclosed by the invention is basically applicable to the surfaces of various iron-based, aluminium-based and copper-based materials, moreover, brushed, sprayed or immersed base materials have excellent corrosion resistance, durability and high adhesive force; the process of the preparation method is mature, the production cost is low, the production process is green and harmless, and therefore the preparation method is suitable for popularization and application on a large scale.
Owner:上海特德拉化工有限公司

Preparation method for sustained-release type volatile rust preventive paper

The invention relates to a preparation method for sustained-release type volatile rust preventive paper. According to the invention, a halloysite nanotube of a hollow structure is used as a carrier, a volatile antirust agent is adhered on the surface of the carrier and loaded in the cavity of the carrier in virtue of strong adsorption ability of surfaces of the particles of the halloysite nanotube and the cavity structure, and a polyelectrolyte is used for coating, thereby obtaining a halloysite nanotube-volatile antirust agent compound; the halloysite nanotube-volatile antirust agent compound is compounded with a polymer emulsion, modified starch and the like, an obtained compound coats the surface of paper, and drying and press polish are carried out so as to obtain the volatile rust preventive paper with a sustained-release function. Since the volatile antirust agent is adhered on the surface of the halloysite nanotube and loaded in the cavity of the halloysite nanotube and coated by the polyelectrolyte, the release of the volatile antirust agent is controlled, so antirust time of the rust preventive paper is greatly increased; heat capacity of the volatile antirust agent is improved, so loss of the volatile antirust agent during preparation of the rust preventive paper is greatly reduced.
Owner:SOUTH CHINA UNIV OF TECH

Multifunctional phosphating solution, and preparation method and application thereof

The invention relates to a multifunctional phosphating solution and a preparation method and application thereof. The multifunctional phosphating solution comprises liquid A and liquid B and is characterized in that a ratio of the liquid A to the liquid B in the multifunctional phosphating solution is 1: 0.1-1. The liquid A comprises the following substances, by mass, 26 to 48 parts of diammonium phosphate, 0.9 to 12 parts of phosphoric acid with a concentration of 85%, 0.8 to 1.8 parts of metal powder, 0.6 to 1.4 parts of animal glue, 0.4 to 10 parts of calcined gypsum powder and 0.3 to 0.8 part of alum, with the balance being water. The liquid B comprises the following substances, by mass, 20 to 46 parts of zinc dihydrogen phosphate, 38 to 55 parts of zinc nitrate, 2 to 3.8 parts of sodium fluoride, 2 to 4 parts of zinc oxide and 2 to 6 parts of phosphoric acid with a concentration of 85%, with the balance being water. The multifunctional phosphating solution provided by the invention is composed of the liquid A and the liquid B, can realize removal of oil and rust at the same time and has the efficacy of rust protection, heat insulation, high temperature resistance, heat preservation, flame retardation, noise abatement, shock prevention, isolation, pollution cleaning and resistance to fire. The multifunctional phosphating solution has the following beneficial effects: a fast rust removal speed, great thickness of a formed film, long antirust time, etc.
Owner:李春清

Long-acting water-based metal rust preventing agent

InactiveCN105907308AReduce the cost of rust preventionLow costWax coatingsAnti-corrosive paintsWater basedGas phase
The invention discloses a long-acting water-based metal rust preventing agent. The long-acting water-based metal rust preventing agent is prepared from, by weight, 2-10 parts of pentaerythritol tetraoleate, 5-10 parts of propylene glycol, 3-10 parts of petroleum-resin-modified paraffin emulsion, 1-2 parts of potassium oleate, 2-4 parts of sodium citrate, 0.5-1 part of lignin sulfonate, 2-6 parts of gas-phase titanium dioxide, 1-3 parts of sodium cocoate, 1-2 parts of polyvinylpyrrolidone, 1-2 parts of a modifying agent, 1-2 parts of other auxiliaries and 30-50 parts of water. Accordingly, an efficient long-acting environment-friendly water-based metal rust preventing agent product is obtained through the reasonable raw material proportion, the long-acting water-based metal rust preventing agent is suitable for rust preventing of cast iron, steel materials and multiple kinds of alloy steel, and the rust preventing cost in the metal processing, storing and transporting process is reduced; a film can be formed on the surface of metal while the long-acting water-based metal rust preventing agent is slowly released to prevent rust, therefore, the rust preventing time is prolonged, and decomposition and deterioration of metal processing liquid are inhibited; the long-acting water-based metal rust preventing agent is safe to use, environmentally friendly, simple in preparation method, low in cost and suitable for massive production.
Owner:SUZHOU HONGKE METAL PROD CO LTD
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