Oily solid releasing agent and preparation method thereof

Abstract

The invention provides an oily solid releasing agent which is prepared from the following components in parts by weight: 80-85 parts of base material, 0.8-1.2 parts of emulsifier, 5-10 parts of film-forming assistant, 5-15 parts of additive, 5-15 parts of moisture absorber and 1-5 parts of antioxidant. The base material contains animal oil, vegetable oil, mineral oil and a soaping agent. The additive is a compounded additive containing high-carbon hydrocarbon, alcohol and alkali, wherein the high-carbon hydrocarbon is paraffin; the additive accounts for 5% of the base material. The invention also relates to a preparation method of the releasing agent.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to an oily release agent for concrete prefabricated components. Background technique [0002] Concrete prefabricated components or prefabricated products, such as blocks, slabs, beams, piers, dams, bridges, etc., must use formwork or molds during the pouring process. In order to make the hardened concrete easy to release without damaging the formwork, a long layer of release agent is applied to the formwork or mold. Due to different application occasions, in addition to requiring easy demoulding, some also require the surface of the demoulded concrete parts to be smooth and free from contamination. Therefore, higher quality requirements are put forward for the release agent. For a long time, the so-called liquid soaps obtained by saponification of engine oil, waste engine oil, emulsified engine oil, etc., or animal and vegetable oils, and inferior oils have been used as release agents in Ch...

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Problems solved by technology

[0003] CN1064698A discloses a concrete release agent, which is an aqueous solution prepared by adding 160 parts of release oil, 64-88 parts of regenerated engine oil or waste engine oil, 72-104 parts of edible vegetable oil foot soap, and adding water to a concentration of 30-35%. preparation, but its active substance content is only 30-35%, spray once, continuous demoulding 2-3 times

[0004] CN1634690A discloses a concrete release agent, its main components are lard 3-5%, stearic acid 3-5%, machine oil 1-3%, sodium hydroxide 0.1-2%, washing powder 0.01-0.03%, Tributyl phosphate 0.2-0.3%, formaldehyde 0.01-0.1%, water 85-92%; among them, formaldehyde is used as a stabilizer, which is not environmentally friendly and not conducive to large-scale production

[0005] CN101348384A discloses a special mold release agent for fair-faced concrete, which reduces the contamination on the surface of components by using decolorizing oil, but increases the decolorization step of waste engine oil, and the actual production cost is relatively high

[0006] CN1746278A discloses a release agent, which is prepared by using emulsified silicone oil, stearic acid, emulsifier, antifreeze, alkali metal compound, and water; wherein the use of emulsified silicone oil leads to a rise in cost

[0007] CN102504924A discloses a POSS modified vegetable oil emulsion release agent, which uses vegetable oil as a base, uses POSS-vegetable oil polymer as a modifier, and adds emulsifiers, defoamers and stabilizers; the obtained release agent uses vegetable oil as a Raw materials, green and environmentally friendly, good mold release performance, but the introduction of POSS raw materials leads to higher costs, which is not conducive to mass production and promotion

CN102146313A also discloses a vegetable oil-based emulsion release agent, 3-35% of vegetable oil, 1-6% of emulsifier, 0.1% of stabilizer, 0.2% of defoamer, and the balance is deionized water; although the ingredients are green and environmentally friendly, but Excessive water consumption is not conducive to long-term storage, and the product dilution is easy to separate after long-term storage

CN102080009A discloses a release agent for concrete, which is prepared by using release oil, diesel oil, vegetable oil, liquid paraffin, sodium carbonate, methyl cellulose, bentonite, water and antifreeze. The disadvantage is that no emulsifying agent is added agent, time of placement or transport is limited

[0008] CN102191120A discloses a special high-efficiency release agent for foam concrete prefabricated parts. It uses waste engine oil, stearic acid, OP-10 emulsifier, caustic soda, talcum powder, phosphoric acid, and water as raw materials to prepare a milky white viscous liquid. Kg release agent diluent can be painted 10m 2 , but this product needs to be used with warm water

CN103122267A discloses a release agent for fair-faced concrete products, which is prepared from zinc stearate, paraffin, spar, 200# solvent gasoline and washing powder, but it needs to be left to stand for homogenization for more than 7 days, and the cycle is longer, which is not conducive to industrial application

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