Application of foamed PS waste in chemical building materials

With the rapid development of the petrochemical and plastic industries, plastic products have been widely used in industry and agriculture and daily life. Due to its low foam density (25kg/m3), low water absorption, good acid and alkali resistance, good sound insulation, and shockproof, decorative, and easy molding, polystyrene (PS) is used in construction materials, household appliances, etc. Widely used, but it also caused a more serious white pollution, the recycling rate of less than 20%. If the abandoned foamed PS is buried deeply, it will not be easily aged and hardly degraded, it will pollute the groundwater source, destroy the soil structure, and reduce the production of crops such as grain; if it is simply incinerated, it will seriously pollute the air and the atmosphere. In response to these problems, people have explored and practiced the use of foamed PS waste in the industrial road of chemical building materials, and have achieved satisfactory results, creating considerable economic benefits. 1. The lightweight roof insulation material crushes the waste foaming PS, adds the expanded perlite, cement and mortar, mixes and mixes uniformly, then puts it on the roof for curing for 3 days, naturally dry, and then wipes it into a lightweight concrete thermal insulation layer with the cement mortar. The materials made by this method have low production costs, good heat insulation, and cool in winter and cool in summer. 2. The waterproofing membrane will wash and dry the waste foaming PS, dissolve it with cheap benzene solution or chlorocarbon residue, and add the toughening agent and the film-forming anti-seepage and wear-resistance agent into a viscose-like form, blown or coated. The glass cloth surface, after drying, is a waterproof roll and can be used for waterproofing roofs or pipes. The solvent can be recycled after cooling. 3, fiber reinforced sound insulation board will be scraped foamed PS pulverized into 0.1-0.5cm granules, adding cement and fiber reinforced mix, fully mixed, and curing, can be made of lightweight sheet with excellent mechanical properties, can be prefabricated Composite exterior wall, indoor insulation board, blocks, can also be used for on-site pouring. 4, the concrete foam insulation board to wash the waste foam PS, crushed into 0.1-0.5cm particles, add 425 portland cement, the volume ratio of the two is 2-3:1; add the mass fraction of 1% - 3% of the early strength agent (inorganic base) was stirred with water and slurried; then the rosin soap foaming agent was added and mixed into a slurry. Into the mold, release after 1h. Water curing for 7 days made of 10cm thick plate, its thermal conductivity, compressive strength are better, can reach the thermal effect of the 95cm thick plasterer brick wall. When the roof is in use, wipe a layer of cement mortar on the board to protect the water, and then use a bituminous felt as a waterproof layer. 5, metal, wooden doors and windows and glass sealant in the dissolving tank plus waste foaming PS50kg, No. 200 solvent oil 40kg, xylene 50kg, stirring to dissolve, to impurities, made of transparent PS rubber. Add 13kg of No. 1788 industrial grade polyvinyl alcohol in another dissolving tank, add 80kg of water, heat and dissolve at 30-90°C, slightly add 1kg of dibutyl phthalate and surfactant octylphenol polyvinyl ether, add The amount of bentonite can be mixed into a paste. The product has fast drying, good performance, and excellent acid and weather resistance. 6. Asphalt Intensifier Adds waste foamed PS prills to molten asphalt to provide enhanced, heat-resistant, waterproof, roofing and road building materials. 7. Plant fiber reinforced insulation material The waste foaming PS and solvent are made into a 5% solution, and the crushed corn core plant fiber is added and mixed and pressed to form a heat insulating material. 8. Impervious leakage-removing agent is made of waste foaming PS with a small amount of plasticizer and produced by hot-melting process. The product dries quickly and has the characteristics of good sealing performance, strong adhesion, acid and alkali resistance, anti-aging and so on. Its waterproof anti-corrosion performance greatly exceeds the commonly used plastic ointment and asphalt ointment, the service life of up to 20 years. 9. Versatile resin glue produced by waste foaming PS with multi-functional resin glue, with good adhesion, high gloss, strong impact resistance, acid and alkali resistance, etc., used for the production of various glass steel products, can greatly reduce production cost. In addition, waterproof paint, satin paint, furniture putty glue and other products can also be produced. 10, with rust antirust paint with waste foam PS production of rust antirust paint, low cost, can be directly applied to the surface of a certain corrosion of steel, with penetration, rust, anti-corrosion triple function, but also for furniture Surface paint.