32results about How to "Long-term anti-corrosion" patented technology

The invention belongs to the technical field of polyester powder coating preparation, and in particular relates to a long-acting weather-resistant, chlorine-salt corrosion-resistant polyester powder coating and a preparation method. The main raw materials of the powder coating of the present invention are: 530-560 parts of polyester resin, 45-60 parts of TGIC, 10-15 parts of trimesic acid triglycidyl ester, 120-180 parts of titanium dioxide, and 80-120 parts of barium sulfate , 8‑12 parts of brightening agent, 7‑10 parts of leveling agent. The polyester resin used in the powder coating of the present invention has a good linear structure, which ensures excellent fluidity; the powder coating uses a larger amount of trifunctional curing agent TGIC, and is matched with triglycidyl trimesic acid with a low melting point and excellent water resistance Esters are used as low-temperature curing agents to further improve the crosslinking density and water resistance of the coating film, and finally ensure long-term weather resistance and chloride salt corrosion resistance. The final powder coating product can be used for low-temperature curing at 160°C. The coating film prepared by it has good long-term weather resistance and chlorine salt corrosion resistance, and is especially suitable for infrastructure spraying on highways such as guardrails and bridges.

A high-temperature and high-pressure-resistant solvent-free heavy-duty anti-corrosion coating composition, including material A and material B, material A is obtained from a system comprising the following components: 40-60 parts of novolac epoxy resin, 5-10 parts of bisphenol F resin, and the reaction Type toughening agent 5-10 parts, reactive diluent 5-10 parts, thixotropic agent 1-3 parts, heat-resistant pigment 5-10 parts, additives 1-2 parts, filler 5-10 parts; material B is 20 ‑30 parts of curing agent, which is a mixture of modified fatty amine and modified phenalkamine. The high-temperature and high-pressure-resistant solvent-free heavy-duty anti-corrosion coating in the present invention is a solvent-free system, and the coating is environmentally friendly and green, and can be normally applied at 0-40°C, cured at room temperature, and does not need heating. After the coating is fully cured, it can achieve long-term anti-corrosion function under high-pressure, high-temperature, heavy-corrosion working conditions such as water-mixed pipelines and high-pressure gas-collecting pipelines, improve the use efficiency of pipelines, and improve the safety of transportation.

The invention relates to a high-solid surface-tolerant epoxy zinc-rich primer. The primer is prepared from a component A and a component B according to a weight ratio of (16-20):1; the component A comprises the following components in parts by weight: 5-9 parts of liquid phenolic epoxy resin, 6-15 parts of E20 solid epoxy resin, 0.5-1.5 parts of an active diluent, 0.1-0.3 part of a dispersing agent, 70-80 parts of main rust-proof pigment, 2-6 parts of chemical anti-rust pigment, 1.5-2.5 parts of an anti-settling agent and 3-4 parts of an organic mixed solvent; and the component B comprises thefollowing components in parts by weight: 1.5-2.5 parts of a polyamide curing agent, 2-3 parts of a Mannich base curing agent, 0.3-0.6 part of a silane coupling agent and 0.2-0.6 part of an organic mixed solvent. The invention also relates to a preparation method of the primer and a coating film. The primer is high in solid content and low in VOC content, is resistant to corrosion, has a long effect, has good adhesive force and salt fog resistance, and is particularly suitable for repairing and maintaining equipment in industries such as chemical industry, thermoelectricity, machinery and thelike.

A protective grease for the T-shaped screw bolt of railway is proportionally prepared from fatty acid lithium soap, lanolin magnesium soap, barium dinonyl naphthalenesulfonate, enylbutanedioic acid, silican oil, phenyl-alpha-naphthaleneamine, and synthetic alkylbenzene oil. Its advantages are high anticorrosion, antirust, antiageing and water-proof effect and high adhesion.

The invention relates to an environment-friendly flame-retardant no-adhesive crushing board and a manufacturing method thereof. The crushing board is manufactured by the following method: 1) preparingwheat straw coarse aggregates, preparing wheat straw fine aggregates, sorghum coarse aggregates and sorghum fine aggregates; 2) mixing nano calcium carbonate, nano zinc oxide and nano copper oxide, and modifying to obtain a modifying additive A; mixing nano zinc borate, nano zinc oxide and nano copper oxide, and modifying to obtain a modifying additive B; 3) mixing the wheat straw coarse aggregates, the sorghum coarse aggregates and the modifying additive A to obtain a coarse mixture; mixing the wheat straw fine aggregates, the sorghum fine aggregates and the modifying additive B to obtain afine mixture; and 4) taking the coarse mixture as a core layer and taking the fine mixture as a surface layer to perform spreading, pre-pressing, steam-injecting, hot-pressing and cooling balance. Theobtained no-adhesive crushing board is free of formaldehyde release, has good mechanical property, water and moisture resistance, and anti-corrosion anti-bacterial property, is good in fireproof andflame-resistant effect, and is suitable for being popularized and used.

The invention provides a spunlaced nonwoven. The spunlaced nonwoven includes a base layer, a water absorption layer and a functional layer which are arranged sequentially from top to bottom and in reinforced connection through spunlace; the base layer includes 61-71 parts by mass of first plant fiber and 29-39 parts by mass of fine denier synthetic fiber; the water absorption layer is a second plant fiber layer; the functional layer includes 65-75 parts by mass of third plant fiber and 25-35 parts by mass of fine denier synthetic fiber; the first plant fiber includes bamboo pulp and tea tree wood pulp; second plant fiber includes bamboo pulp and tea tree wood pulp; the third plant fiber includes bamboo pulp, tea tree wood pulp, fructus cnidii straw pulp and golden cypress pulp. The spunlaced nonwoven adopts a three-layer structure, and uses the plant fiber and the fine denier synthetic fiber, the dispersed ability and intensity of the spunlaced nonwoven are effectively balanced, and the unification of the dispersed ability and the intensity is achieved. According to different use characteristics, the three layers are set with different ratios, and the most beneficial use effect isachieved.

The invention relates to an environment-friendly flame-retardant non-adhesive fiberboard of crop straw and a preparation method thereof. The fiberboard is prepared by the following steps that 1 ) wheat straw and sorghum straw are taken to be cut off correspondingly, and the wheat straw and the sorghum straw are soaked in water to obtain a softened material; 2 ) steam explosion is correspondingly carried out on the softened material to obtain wheat straw fiber and sorghum straw fiber; 3 ) nano calcium carbonate, nano zinc oxide are mixed with nano copper oxide, and modifying is carried out toobtain a modified additive A; nano zinc borate, the nano zinc oxide are mixed with the nano copper oxide, and modifying is carried out to obtain a modified additive B; 4 ) the wheat straw fiber and the sorghum straw fiber are mixed with the modified additive A to obtain a core layer mixture; the wheat straw fiber is mixed with the modified additive B to obtain a surface layer mixture; and 5 ) thecore layer mixture is taken as a core layer, the surface layer mixture is taken as a surface layer to be laid and pre-pressed to obtain a slab, after hot-pressing forming and post-treatment are carried out, the environment-friendly flame-retardant non-adhesive fiberboard is obtained. The fiberboard has no formaldehyde release and has good mechanical property, good anti-water, moisture-proof, anti-corrosion and antibacterial properties; and good in fireproof and flame-retardant effects, and suitable for popularization and application.

The invention discloses a construction method for concrete anti-corrosion tooling in the splash area of ​​a steel cylindrical bank revetment structure, which comprises the following steps: fixing a shear-resistant connection structure on the outer wall of the circumferential range of the splash area of ​​the steel cylindrical bank revetment structure with a tongue-and-groove structure; Weld the bottom formwork support plate at the circumference of the revetment structure splash area with a predetermined distance at the bottom of the shear connection structure; an arc-shaped fixed formwork is installed on the lower part of the shear-resistance connection structure, and a horizontally arranged arc-shaped bottom is welded at the bottom of the fixed formwork wall; hoist the steel cylindrical revetment structure into the water; install water-stop sealing strips on the top of the front wall of the fixed formwork and the top of the left and right side walls; pump out the water in the cavity between the fixed formwork and the movable formwork and the revetment structure, and then Covering concrete is poured in the cavity. The adoption of the method can ensure the long-term anti-corrosion of the offshore steel cylindrical revetment structure within its service life.

The invention relates to metal surface anticorrosion, and discloses an anchor hook type composite anticorrosive metal member and a making technology thereof. The anticorrosive metal member comprises a metal substrate (2), a metal substrate anchor hook layer (1), an occlusion layer (3) and an anticorrosive layer (4), the metal substrate anchor hook layer (1) comprises flat-headed anchor hooks (11), the metal substrate anchor hook layer (1) has an embedded anchoring connection with the occlusion layer (3), and the anticorrosive layer (4) is arranged outside the occlusion layer (3). The making technology comprises the following steps: 1, making anchor grains having a roughness of 150-1500mum on the surface of the metal substrate; 2, pressing the anchor grains of the metal substrate to form the metal substrate anchor hook layer; and 3, coating to form the occlusion layer. In the invention, the high-roughness anchor hook type anchor grains are made on the base surface, an organic material of polar molecules or a Zn-Al anticorrosive metal binding layer is adopted to make the anchor hook type composite layer, and the composite layer has the characteristics of high adhesion, low energy consumption, high cost performance and long-acting anticorrosion.