Preparation method of cement based double-backing rock wool composite thermal insulation board for external wall

Abstract

The invention discloses a preparation method of a cement based double-backing rock wool composite thermal insulation board for an external wall. The preparation method comprises steps as follows: 1), a cement based backing plate I is subjected to surface cleaning and coated with a polyester adhesive; 2), thickness of a rock wool strip is selected; 3), the bottom of the rock wool strip is coated with the polyester adhesive and stuck to the cement based backing plate I; 4), a cement based backing plate II is subjected to surface cleaning and coated with the polyester adhesive; 5), the top of the rock wool strip is coated with the polyester adhesive and stuck to the inner surface of the cement based backing plate II; 6), a dropping upper flat plate forming die is heated and kept at certain pressure, the treatment is continued for 10 h, and die opening, demoulding and piece taking are performed; 7), an anchoring piece and a wood veneer are mounted. The preparation method adopts a four-coating and one-pressing technology, the processing technology is simple and rapid and convenient to operate, so that the problem of reduction of thermal insulation performance and strength of rock wool due to the fact that a rock wool thermal insulation core material gets mildewed and is frost-heaving after absorbing water and damp during using is solved.

Description

technical field [0001] The invention belongs to the technical field composed of insulating materials and concrete, stone or stone materials, and in particular relates to a cement-based double-backed rock wool composite external wall thermal insulation for new buildings and old house renovation buildings. Plate preparation method. Background technique [0002] Building energy conservation refers to the adoption of reasonable architectural design and the selection of wall materials, roof insulation materials, glass, doors and windows, air conditioners and other measures that meet energy-saving requirements. Under the same indoor thermal comfort environment conditions, it can improve energy utilization efficiency and reduce building energy consumption; for the external wall insulation board integrated with pure polyurethane rigid foam insulation composite on the market, the combustion level is B2 level, even if it is added with expensive The flame retardant can reach the combu...

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Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a preparation method of cement-based double-backed rock wool composite exterior wall insulation board, the preparation method of the cement-based double-backed rock wool composite exterior wall insulation board adopts four coatings and one pressing process, Less steps and simple process, after the polyester glue is solidified, an adhesive film layer is formed between the thermal insulation core material and the cement-based backing. The adhesive film layer has the functions of steam insulation, waterproof, and moisture resistance, and can effectively prevent external moisture from migrating and infiltrating the thermal insulation core material , so as to solve the problem of rock wool insulation performance and strength decline caused by rock wool insulation core material absorbing water during use, moldy after moisture absorption, and frost heaving

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