Composite dipping glue used for preparing high temperature filter material and usage method

Abstract

The invention relates to a composite dipping glue used for preparing a high temperature filter material, which comprises the following components: phenolic resin, a catalyst, a flexibilizer, a cosolvent, an inorganic bonding agent, a coupling agent, a waterproof oil-proofing agent, an anti-grinding agent, a chelating agent, a carbonization agent, a flame retardant agent and a stabilizing agent. According to the invention, a normal temperature mixing stirring method is employed to prepare an aqueous dipping glue, the water-soluble performance of the prepared dipping glue is excellent, the dilution ratio enables wide adjustable degree, the adhesiveness is good, the impregnation is easy, no unfriendly component on environment such as heavy metal ions can be contained, the usage is convenient, the production process control is simple, the pollutant discharge capacity is low, and the cost is low. Compared with other resin-based dipping glue, the modification effect of the composite dipping glue on a filtering base material surface is obvious, The filter material prepared by the dipping glue has excellent high temperature resistance and aging resistance performances and good acid and alkali resistance and corrosivity resistance performances, the conservation rate of toughness under high temperature is high, and the waterproof and oil-proof performances are prominent. The dipping glue can treat various organic and inorganic fiber such as glass fiber, rock wool, basalt fiber, carbon fiber, stainless steel fiber, aramid fiber, polyphenylene sulfide (PPS), terylene and polypropylene.

Description

technical field [0001] The invention relates to an impregnating glue, in particular to a composite impregnating glue for preparing a high-temperature filter material and a method for using the impregnating glue. Background technique [0002] The core of high-temperature gas medium filtration and dedusting technology is high-temperature filter material. Filter material is the key material of bag filter. Good performance, easy to clean dust, not easy to scale; suitable air permeability, low resistance; sufficient strength and flexibility, good dimensional stability, long-term use without deformation, degumming, fiber delamination, peeling; good temperature resistance, Chemical corrosion resistance, oxidation resistance, hydrolysis resistance and wide adaptability; wide source of raw materials, stable and reliable performance; low price, long life. [0003] At present, the base materials of domestic high-temperature filter materials are generally glass fiber or aramid fiber, a...

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Problems solved by technology

In addition, it is necessary to suppress the generation of harmful substances released by ordinary phenolic resins at high temperatures or control their release; (3) Although the chemical stability of glass fiber filter materials is very good, it can withstand most acids (except hydrofluoric acid) Corrosion, but strong alkali at room temperature and medium-strong alkali at high temperature can still erode the glass, and the glass fiber needs to be treated with alkali corrosion resistance; (4) Similarly, the smoothness of the glass fiber surface before and after phenolic resin modification, The moisture resistance is not good, and it is difficult to deal with high-humidity and high-temperature flue gas with high viscosity. During use, dust is easy to scale and even partially forms tiny ash cakes, which reduces the air permeability of the filter bag and increases the pressure. Such a long-term operation will The reasonable microstructure of the filter material is gradually destroyed, and it also causes great difficulties to clean the dust after use.

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