Production technology for physical foaming cement insulation boards

Abstract

The invention discloses a production technology for physical foaming cement insulation boards, and belongs to the field of building insulation materials. The technology comprises the steps that 1, general purpose portland cement, a composite aluminosilicate mineral admixture and a composite additive are metered and prestirred to obtain solid materials, and water is added for wet grinding to obtain non-bleeding unstratified slurry; 2, fiber is added into the slurry, and then high-speed stirring and dispersion are performed; then, foams with the diameter smaller than 0.3 mm are added to form foam bodies; 3, the foams obtained in the second step are molded by means of a mold, maintained and demolded and then cut into boards, high-molecular polymer waterproof lotion uniformly permeates microholes of the boards, and artificial drying or natural air-drying is performed to obtain the physical foaming cement insulation boards. According to the technology, high-pressure permeation equipment is adopted for enabling the high-molecular polymer waterproof lotion to rapidly and uniformly permeate the microholes of the boards, polymer inside the lotion will form films on the walls of the microholes after artificial drying or natural air-drying, passages of pores are blocked, the water absorption rate of the insulation boards can be effectively lowered, the toughness and strength of the boards can be improved, and board cracks are avoided.

Description

technical field

[0001] The invention belongs to the field of building thermal insulation materials, and in particular relates to a production process of a physically foamed cement thermal insulation board. Background technique

[0002] Since I used organic foam insulation boards for foreign wall insulation, fires have occurred repeatedly, which have caused huge losses to the lives and property of our people. For this reason, the National Fire Protection Bureau issued a document (65

[2011] ), requiring "banning organic foam insulation boards". This has injected a strong impetus into the development of foam concrete insulation boards. With the promulgation and implementation of my country's wall reform and building energy-saving policies, and affected by building fires, modern energy-saving green buildings urgently need non-combustible thermal insulation materials with excellent thermal insulation performance, waste utilization, and light weight. As a new type of building mate...

Examples

Embodiment 1

[0023] A kind of physical foaming cement insulation board production process, the steps are:

[0024] (1) Measure and pre-mix 145kg of general-purpose Portland cement, 0kg of composite aluminosilicate mineral admixture, and 0kg of composite admixture to obtain solid materials, and add water to wet mill according to the mass ratio of water to solid materials of 0.6:1 20 minutes to get a non-bleeding, non-layered slurry;

[0025] (2) Add neutral alkali-resistant polypropylene fibers into the slurry and stir at high speed until the fibers are evenly dispersed, then add a foaming agent placed in a foaming machine to prepare a foam with a diameter of less than 0.3 mm to form a foam body, 1m 3 The foam body contains 0.5kg vegetable protein foaming agent and 1.35kg neutral alkali-resistant polypropylene fiber;

[0026] (3) The foam body obtained in step (2) is molded into a mold, maintained at 100°C for 8 hours at a constant moisturizing temperature, demoulded, and cut to obtain a b...

Embodiment 2

[0030] A kind of physical foaming cement insulation board production process, the steps are:

[0031] (1) 97kg of general Portland cement, 42kg of composite aluminosilicate mineral admixture (including 21kg of metakaolin, 21kg of fly ash), 1.4kg of composite admixture (of which 0.7kg of gypsum, 0.7kg of calcium hydroxide) , that is, the percentage of ordinary Portland cement is 69%, and the percentage of composite aluminosilicate mineral admixture is 30% ((wherein the mass percentage of metakaolin in the composite aluminosilicate mineral admixture is 50%), the percentage content of the composite admixture is 1% (the mass percentage of gypsum in the composite admixture is 50%), and the solid material is measured and pre-stirred, and water is added according to the mass ratio of water to solid material 0.8:1 Wet grinding for 30 minutes to obtain a non-bleeding and non-layered slurry;

[0032] (2) Add neutral alkali-resistant polypropylene fibers into the slurry and stir at high...

Embodiment 3

[0037] A kind of physical foaming cement insulation board production process, the steps are:

[0038] (1) 63kg of general Portland cement, 66kg of composite aluminosilicate mineral admixture (including 39.6kg of metakaolin, 26.4kg of fly ash), 3.3kg of composite admixture (of which 1.98kg of gypsum, 1.32 kg of calcium hydroxide kg), that is, the percentage content of ordinary Portland cement is 47.5%, and the percentage content of composite aluminosilicate mineral admixture is 50% (the mass percentage of metakaolin in the composite aluminosilicate mineral admixture is 60%) %), the percentage content of the composite admixture is 2.5% (the mass percentage of gypsum in the composite admixture is 60%), measure and pre-stir the solid material, add water and wet mill for 40 minutes according to the mass ratio of water to solid material 0.8:1 Obtain a non-bleeding, non-layered slurry;

[0039] (2) Add neutral alkali-resistant polypropylene fibers into the slurry and stir at high sp...

technical field

[0001] The invention belongs to the field of building thermal insulation materials, and in particular relates to a production process of a physically foamed cement thermal insulation board. Background technique

[0002] Since I used organic foam insulation boards for foreign wall insulation, fires have occurred repeatedly, which have caused huge losses to the lives and property of our people. For this reason, the National Fire Protection Bureau issued a document (65

[2011] ), requiring "banning organic foam insulation boards". This has injected a strong impetus into the development of foam concrete insulation boards. With the promulgation and implementation of my country's wall reform and building energy-saving policies, and affected by building fires, modern energy-saving green buildings urgently need non-combustible thermal insulation materials with excellent thermal insulation performance, waste utilization, and light weight. As a new type of building mate...

Examples

Embodiment 1

[0023] A kind of physical foaming cement insulation board production process, the steps are:

[0024] (1) Measure and pre-mix 145kg of general-purpose Portland cement, 0kg of composite aluminosilicate mineral admixture, and 0kg of composite admixture to obtain solid materials, and add water to wet mill according to the mass ratio of water to solid materials of 0.6:1 20 minutes to get a non-bleeding, non-layered slurry;

[0025] (2) Add neutral alkali-resistant polypropylene fibers into the slurry and stir at high speed until the fibers are evenly dispersed, then add a foaming agent placed in a foaming machine to prepare a foam with a diameter of less than 0.3 mm to form a foam body, 1m 3 The foam body contains 0.5kg vegetable protein foaming agent and 1.35kg neutral alkali-resistant polypropylene fiber;

[0026] (3) The foam body obtained in step (2) is molded into a mold, maintained at 100°C for 8 hours at a constant moisturizing temperature, demoulded, and cut to obtain a b...

Embodiment 2

[0030] A kind of physical foaming cement insulation board production process, the steps are:

[0031] (1) 97kg of general Portland cement, 42kg of composite aluminosilicate mineral admixture (including 21kg of metakaolin, 21kg of fly ash), 1.4kg of composite admixture (of which 0.7kg of gypsum, 0.7kg of calcium hydroxide) , that is, the percentage of ordinary Portland cement is 69%, and the percentage of composite aluminosilicate mineral admixture is 30% ((wherein the mass percentage of metakaolin in the composite aluminosilicate mineral admixture is 50%), the percentage content of the composite admixture is 1% (the mass percentage of gypsum in the composite admixture is 50%), and the solid material is measured and pre-stirred, and water is added according to the mass ratio of water to solid material 0.8:1 Wet grinding for 30 minutes to obtain a non-bleeding and non-layered slurry;

[0032] (2) Add neutral alkali-resistant polypropylene fibers into the slurry and stir at high...

Embodiment 3

[0037] A kind of physical foaming cement insulation board production process, the steps are:

[0038] (1) 63kg of general Portland cement, 66kg of composite aluminosilicate mineral admixture (including 39.6kg of metakaolin, 26.4kg of fly ash), 3.3kg of composite admixture (of which 1.98kg of gypsum, 1.32 kg of calcium hydroxide kg), that is, the percentage content of ordinary Portland cement is 47.5%, and the percentage content of composite aluminosilicate mineral admixture is 50% (the mass percentage of metakaolin in the composite aluminosilicate mineral admixture is 60%) %), the percentage content of the composite admixture is 2.5% (the mass percentage of gypsum in the composite admixture is 60%), measure and pre-stir the solid material, add water and wet mill for 40 minutes according to the mass ratio of water to solid material 0.8:1 Obtain a non-bleeding, non-layered slurry;

[0039] (2) Add neutral alkali-resistant polypropylene fibers into the slurry and stir at high sp...