High-toughness and high-strength gypsum product and preparation method thereof

Abstract

The invention discloses a high-toughness and high-strength gypsum product and a preparation method thereof. The high-toughness and high-strength gypsum product is prepared from the following components in parts by weight: 70-80 parts of gypsum powder, 15-20 parts of filler, 0.2-0.5 part of dispersing agent, 0.1-0.2 part of defoaming agent, 2-5 parts of dispersible latex powder, 5-10 parts of gypsum whisker and 1-5 parts of glass short fiber (or 0.1-0.5 part of chemical fiber short fiber). The high-toughness and high-strength gypsum product is high in strength: the 28d flexural strength is up to 20Mpa at most, and the 28d compressive strength is up to 180Mpa at most; and the surface hardness is up to 6H. The toughness is good: the maximum bending toughness is tested to be 68mm by adopting an MEW-40 wood universal testing machine. The technical problems that the traditional gypsum product is low in strength and poor in toughness are solved.

Description

technical field

[0001] The invention relates to the technical field of high-toughness and high-strength gypsum products, in particular to a high-toughness and high-strength gypsum product and a preparation method thereof. Background technique

[0002] Gypsum is a widely used industrial material and construction material, which can be used in gypsum building products, cement retarder, model making, medical food additive, sulfuric acid production, paper filler, paint filler, etc. In recent years, gypsum materials and gypsum products have been widely used in interior decoration and decoration of buildings, especially in the decoration and decoration of family houses. Compared with other similar materials, gypsum products have the characteristics of relatively light texture, high strength, and good fire resistance. One of the first choice materials for decoration. However, the existing gypsum and gypsum products have the problems of low strength and poor toughness. Contents ...

Examples

Embodiment 1

[0020] 1. A high-toughness and high-strength gypsum product, comprising the following components in parts by weight: 75 parts of α-gypsum powder, 18 parts of filler (white marble powder), 0.35 part of dispersant (HQ-F20), 0.12 part of defoamer, 3.5 parts of dispersible latex powder, 8 parts of gypsum whiskers, 1.3 parts of glass staple fiber (or 0.13 part of chemical fiber staple fiber).

[0021] 2. The preparation method of the high-toughness and high-strength gypsum product comprises the following steps:

[0022] Step 1. Weigh the raw materials according to the formula, dry mix and mix;

[0023] Step 2, then add water (the total volume of the added water is 20% of the total weight of the mixed material) and stir, and pour the high-toughness and high-strength gypsum slurry into a gypsum mold through hydrothermal reaction to obtain the high-toughness and high-strength gypsum product. Surface hardness up to 6H.

Embodiment 2

[0025] 1. A high-toughness and high-strength gypsum product, comprising the following components in parts by weight: 70 parts of beta gypsum powder, 20 parts of filler (quartz sand), 0.2 part of dispersant (HQ-F20), 0.1 part of defoamer, 2 parts of dispersible latex powder, 5 parts of gypsum whiskers, 1 part of glass staple fiber (or 0.1 part of chemical fiber staple fiber).

[0026] 2. The preparation method of the high-toughness and high-strength gypsum product comprises the following steps:

[0027] Step 1, weighing the raw material components according to the formula and dry mixing;

[0028] Step 2, then add water (the total volume of the added water is 55% of the total weight of the mixed material) and stir, and pour the high-toughness and high-strength gypsum slurry into a gypsum mold through hydrothermal reaction to obtain the high-toughness and high-strength gypsum product. The surface hardness reaches 4H.

Embodiment 3

[0030] 1. A high-toughness and high-strength gypsum product, comprising the following components in parts by weight: 80 parts of α gypsum powder, 15 parts of filler (sandstone), 0.5 part of dispersant (HQ-20F), 0.2 part of defoamer, dispersible 5 parts of permanent latex powder, 10 parts of gypsum whiskers, 2 parts of glass staple fiber (or 0.2 part of chemical fiber staple fiber).

[0031] 2. The preparation method of the high-toughness and high-strength gypsum product comprises the following steps:

[0032] Step 1, weighing the raw material components according to the formula and dry mixing;

[0033] Step 2, then add water (the total volume of the added water is 20% of the total weight of the mixed material) and stir, and pour the high-toughness and high-strength gypsum slurry into a gypsum mold through hydrothermal reaction to obtain the high-toughness and high-strength gypsum product. The surface hardness reaches 5H.

technical field

[0001] The invention relates to the technical field of high-toughness and high-strength gypsum products, in particular to a high-toughness and high-strength gypsum product and a preparation method thereof. Background technique

[0002] Gypsum is a widely used industrial material and construction material, which can be used in gypsum building products, cement retarder, model making, medical food additive, sulfuric acid production, paper filler, paint filler, etc. In recent years, gypsum materials and gypsum products have been widely used in interior decoration and decoration of buildings, especially in the decoration and decoration of family houses. Compared with other similar materials, gypsum products have the characteristics of relatively light texture, high strength, and good fire resistance. One of the first choice materials for decoration. However, the existing gypsum and gypsum products have the problems of low strength and poor toughness. Contents ...

Examples

Embodiment 1

[0020] 1. A high-toughness and high-strength gypsum product, comprising the following components in parts by weight: 75 parts of α-gypsum powder, 18 parts of filler (white marble powder), 0.35 part of dispersant (HQ-F20), 0.12 part of defoamer, 3.5 parts of dispersible latex powder, 8 parts of gypsum whiskers, 1.3 parts of glass staple fiber (or 0.13 part of chemical fiber staple fiber).

[0021] 2. The preparation method of the high-toughness and high-strength gypsum product comprises the following steps:

[0022] Step 1. Weigh the raw materials according to the formula, dry mix and mix;

[0023] Step 2, then add water (the total volume of the added water is 20% of the total weight of the mixed material) and stir, and pour the high-toughness and high-strength gypsum slurry into a gypsum mold through hydrothermal reaction to obtain the high-toughness and high-strength gypsum product. Surface hardness up to 6H.

Embodiment 2

[0025] 1. A high-toughness and high-strength gypsum product, comprising the following components in parts by weight: 70 parts of beta gypsum powder, 20 parts of filler (quartz sand), 0.2 part of dispersant (HQ-F20), 0.1 part of defoamer, 2 parts of dispersible latex powder, 5 parts of gypsum whiskers, 1 part of glass staple fiber (or 0.1 part of chemical fiber staple fiber).

[0026] 2. The preparation method of the high-toughness and high-strength gypsum product comprises the following steps:

[0027] Step 1, weighing the raw material components according to the formula and dry mixing;

[0028] Step 2, then add water (the total volume of the added water is 55% of the total weight of the mixed material) and stir, and pour the high-toughness and high-strength gypsum slurry into a gypsum mold through hydrothermal reaction to obtain the high-toughness and high-strength gypsum product. The surface hardness reaches 4H.

Embodiment 3

[0030] 1. A high-toughness and high-strength gypsum product, comprising the following components in parts by weight: 80 parts of α gypsum powder, 15 parts of filler (sandstone), 0.5 part of dispersant (HQ-20F), 0.2 part of defoamer, dispersible 5 parts of permanent latex powder, 10 parts of gypsum whiskers, 2 parts of glass staple fiber (or 0.2 part of chemical fiber staple fiber).

[0031] 2. The preparation method of the high-toughness and high-strength gypsum product comprises the following steps:

[0032] Step 1, weighing the raw material components according to the formula and dry mixing;

[0033] Step 2, then add water (the total volume of the added water is 20% of the total weight of the mixed material) and stir, and pour the high-toughness and high-strength gypsum slurry into a gypsum mold through hydrothermal reaction to obtain the high-toughness and high-strength gypsum product. The surface hardness reaches 5H.

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