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A technology of fireproof and thermal insulation mortar and polystyrene particles, which is applied in the field of fireproof and thermal insulation polystyrene particles, preparation, and fireproof thermal insulation mortar. , The effect of improving compactness and good hydrophilicity
Active Publication Date: 2021-12-31
湖北合力久盛混凝土有限公司
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[0004] However, polyphenylene particles are flammable insulation materials. With the frequent occurrence of high-rise residential fire accidents in recent years, people's awareness of the safety of building materials has gradually increased. Therefore, conventional polystyrene particle insulation mortar cannot meet high-end use requirements.
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preparation example 1～12
[0034] As shown in Table 1, the main difference between Preparation Examples 1-12 lies in the different ratios of flame retardant points.
[0035] A kind of flame retardant point, adopts following method to prepare:
[0036] S1: Preparation of aramid pulp:
[0037] 1) immersing 100kg of aramid pulp in 25kg of a polyvinyl alcohol aqueous solution with a mass concentration of 5%, to obtain an immersion solution;
[0038] 2) Put the impregnating liquid into a screw extrusion kneader, stir and shear at 80°C for 30 minutes to prepare aramid pulp;
[0039] S2: Preparation of flame retardant point:
[0040] 1) Ingredients: According to the content in Table 1, weigh polystyrene, inorganic flame retardant, aramid pulp, dispersant and foaming agent; the dispersant is selected from nano-calcium carbonate; the foaming agent is selected from supercritical CO 2 ;
[0041] 2) Extrusion: Mix polystyrene, inorganic flame retardant, and dispersant evenly in a blender, then inject the mixture ...
preparation example 13
[0047] A kind of flame retardant point, the difference between this preparation example and preparation example 7 is that the composition of the aramid pulp is different, the polyvinyl alcohol in the aramid pulp is replaced by acetone, and the impregnating liquid is put into the screw extrusion kneader during the preparation stage , stirring and shearing for 40 min at 40° C.; the rest of the preparation method was the same as that of Preparation Example 7.
preparation example 14
[0049] A kind of flame retardant point, the difference between this preparation example and preparation example 7 is that the composition of the aramid pulp is different, the polyvinyl alcohol in the aramid pulp is replaced with polyethylene glycol, and the mass concentration is 20% polyethylene glycol. Alcoholic aqueous solution, all the other preparation methods are the same as in Preparation Example 7.
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Abstract
The invention discloses fireproof thermal insulation polyphenyl granules, a preparation method and fireproof thermal insulation mortar, the polyphenyl granules contain flame-retardant points, the flame-retardant points are formed by mixing polystyrene with an inorganic flame retardant and aramid pulp, and then extrusion granulation and calcination molding are performed; the preparation method of the polyphenyl granules comprises the following steps: preparing the flame-retardant points in advance, and then weighing 60-70 parts of polystyrene, 20-40 parts of the flame-retardant points, 3-8 parts of a dispersing aid and 0.5-1.5 parts of a foaming agent; mixing, extruding, granulating and puffing to obtain polyphenyl granules; the thermal insulation mortar is prepared from the following components in parts by weight: 100 to 160 parts of cement, 60 to 100 parts of polyphenyl granules, 30 to 50 parts of dry machine-made sand, 0.4 to 1 part of redispersible latex powder, 0.1 to 0.2 part of hydroxypropyl methyl cellulose, 0.1 to 0.3 part of polypropylene fiber, 0.03 to 0.06 part of a water reducing agent and 120 to 200 parts of water. The prepared thermal insulation mortar has excellent fire resistance and energy-saving and thermal insulation properties.
Description
technical field [0001] The invention relates to the technical field of inorganic mortar, in particular to a fire-proof and heat-retaining polystyrene particle, a preparation method and a fire-proof and heat-retaining mortar. Background technique [0002] With the continuous pursuit of high-level life quality in recent years, building mortar with thermal insulation function is also popularized. Thermal insulation mortar is mainly composed of inorganic cementitious materials, mineral admixtures, fine aggregates and admixtures. Among several kinds of thermal insulation mortars, vitrified microbead thermal insulation mortar and rubber powder polystyrene particle thermal insulation mortar are the most used. And it has more cost advantages, so it is more widely used. [0003] At present, the common rubber powder polystyrene particle insulation mortar, the raw material formula includes the following components by weight: 60-90 parts of cement, 10-50 parts of polystyrene particles,...
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