阅读说明：本技术 一种液体隔音涂料 (Liquid sound insulation coating ) 是由 何曙光 马文家 董峰亮 方晓华 韩绍哲 王超 丁烨 宋丹 于 2020-04-16 设计创作，主要内容包括：本发明公开了一种液体隔音涂料,按重量百分比包括：丙烯酸乳液：10-20％,乳化沥青：10-20％,橡胶粉20目：30--50％,聚苯乙烯颗粒：5--15％,增稠剂：0.1-0.5％,交联剂：0.1-0.3％,水：2-20％,所述丙烯酸乳液为固含50％,Tg:-20度,有良好耐水性及水泥相容性的乳液；所述乳化沥青为一种采用阴离子及非离子作为乳化剂的乳化沥青,与所述丙烯酸乳液形成匹配相容性。本发明材料材料组分容易得到成本低,施工方便,可形成具有多个微小空腔的柔性隔音垫,能有效降低撞击力,隔音耐用性好。(The invention discloses a liquid sound insulation coating, which comprises the following components in percentage by weight: acrylic emulsion: 10-20%, emulsified asphalt: 10-20%, rubber powder 20 mesh: 30-50%, polystyrene particles: 5-15%, thickening agent: 0.1-0.5%, crosslinking agent: 0.1-0.3%, water: 2-20 percent of acrylic emulsion, wherein the solid content of the acrylic emulsion is 50 percent, and the Tg is-20 ℃, and the acrylic emulsion has good water resistance and cement compatibility; the emulsified asphalt is emulsified asphalt which adopts anions and non-ions as an emulsifier and forms matching compatibility with the acrylic emulsion. The material components of the invention are easy to obtain, the cost is low, the construction is convenient, the flexible sound insulation pad with a plurality of tiny cavities can be formed, the impact force can be effectively reduced, and the sound insulation durability is good.)

1. A liquid sound insulation coating is characterized in that: comprises the following components in percentage by weight:

acrylic emulsion: 10-20%, emulsified asphalt: 10-20%, rubber powder 20 mesh: 30-50%, polystyrene particles: 5-15%, thickening agent: 0.1 to 0.5%, crosslinking agent: 0.1-0.3%, water: 2-20%, the acrylic emulsion has a solid content of 50% and a Tg of-20 ℃, and is an emulsion with water resistance and cement compatibility; the emulsified asphalt is emulsified asphalt which adopts anions and non-ions as an emulsifier and forms matching compatibility with the acrylic emulsion.

2. The liquid sound-proofing coating of claim 1, wherein: the concrete weight percentages are as follows: acrylic emulsion: 12-18%, emulsified asphalt: 12-18%, rubber powder 20 mesh: 35-45%, polystyrene particles: 7-12%, thickening agent: 0.1-0.5%, crosslinking agent: 0.1-0.3%, water: 5 to 18 percent.

3. The liquid sound-proofing coating of claim 1, wherein: also includes expanded microspheres: 2-5%, the expanded microsphere is a polyurethane microsphere with resilience, and the particle size is as follows: 20-40 um.

4. The liquid sound-proofing coating of claim 3, wherein: the concrete weight percentages are as follows: acrylic emulsion: 13-17%, emulsified asphalt: 13-16%, rubber powder 20 mesh: 37-42%, expanded microspheres: 3-5%, polystyrene particles: 7-10%, thickening agent: 0.1-0.5%, crosslinking agent: 0.1-0.3%, water: 6 to 15 percent.

5. The liquid sound-proofing coating of claim 1, wherein: the polystyrene particles are 0.5mm-1mm foamed polystyrene particles; the rubber powder is 20-mesh waste rubber tire powder.

6. The liquid sound-proofing coating of claim 1, wherein: the thickening agent is one or a plurality of association type acrylic acid and polyurethane association type thickening agents.

7. The liquid sound-proofing coating of claim 1, wherein: the cross-linking agent is one or a plurality of compound of silane and titanate.

8. The liquid sound-proofing coating of claim 1, wherein: after the liquid sound-insulating coating is mixed, a flexible interface layer is formed, and stress between tile glue and the tile can be released.

9. The liquid sound-proofing coating of claim 1, wherein: the sound insulation pad with a plurality of tiny cavities is formed by grading emulsified asphalt, rubber particles, polystyrene particles and expanded microsphere particles.

Technical Field

The scheme belongs to the field of chemical materials, and particularly relates to the field of application of architectural chemical materials.

Background

Along with the improvement of the living standard of people, the great application of large-size and low-water absorption bricks in home decoration drives the vigorous development of ceramic tile adhesive products! However, in the Chinese market, the tiles are only rarely pasted on the ground by using the tile adhesive, one of the influencing factors is that the tiles are pasted on the ground in a thin manner by using the tile adhesive in the residential commodity room, so that the floor clear space can be increased, the building cost is reduced, and the problem of poor ground sound insulation effect is also brought.

At present, the ground sound insulation technology mainly comprises the following modes: 1. the carpet laying method can absorb impact energy, but is not suitable for families, markets and office buildings adopting ceramic tiles for decoration; 2. the floating construction method of the sound insulation floor slab needs an overhead layer, has complex construction and high cost, and compresses the net space height of the floor; 3. the sound insulation mortar method has relatively simple construction, but requires the thickness of at least 3cm to have certain effect, and has the defects of compressed floor clear space height and limited sound insulation effect.

Disclosure of Invention

In order to overcome the problems of the prior art, the invention provides the liquid sound insulation coating, which has the advantages of easily obtained material components, low cost and convenient construction, can form the flexible sound insulation pad with a plurality of tiny cavities, can effectively reduce the impact force, and has good sound insulation durability.

The invention provides a liquid sound insulation coating, which comprises the following components in percentage by weight:

acrylic emulsion: 10-20%, emulsified asphalt: 10-20%, rubber powder 20 mesh: 30-50%, polystyrene particles: 5-15%, thickener: 0.1-0.5%, crosslinking agent: 0.1-0.3%, water: 2-20 percent of acrylic emulsion, wherein the solid content of the acrylic emulsion is 50 percent, the Tg is-20 ℃, namely the glass state-to-high elastic state transition temperature is minus 20 ℃, and the acrylic emulsion has good water resistance and cement compatibility; the emulsified asphalt adopts anions and non-ions as an emulsifier, and has good compatibility with the acrylic emulsion.

Further, the liquid sound insulation coating specifically comprises the following components in percentage by weight: acrylic emulsion: 12-18%, emulsified asphalt: 12-18%, rubber powder 20 mesh: 35-45%, polystyrene particles: 7-12%, thickening agent: 0.1-0.5%, crosslinking agent: 0.1-0.3%, water: 5 to 18 percent.

Further, for increasing the number of the small cavities of the coating and improving the sound insulation effect, the liquid sound insulation coating further comprises expanded microspheres: 2-5%, the expanded microsphere is a polyurethane microsphere with resilience, and the particle size is as follows: 20-40 um.

Further, the liquid sound insulation coating comprises the following components in percentage by weight: acrylic emulsion: 13-17%, emulsified asphalt: 13-16%, rubber powder 20 mesh: 37-42%, expanded microspheres: 3-5%, polystyrene particles: 7-10%, thickening agent: 0.1-0.5%, crosslinking agent: 0.1-0.3%, water: 6 to 15 percent.

Further, the polystyrene particles are 0.5mm-1mm expanded polystyrene particles; the rubber powder is 20-mesh waste rubber tire powder.

Further, the thickener is one or a plurality of associated acrylic acid and polyurethane associated thickeners. The cross-linking agent is one or a plurality of compound of silane and titanate.

Further, after the liquid sound insulation coating is mixed, a flexible interface layer is formed, and stress between the tile glue and the tile can be released. The thickness of the flexible interface layer is about 2-4mm, so that the impact noise can be well reduced by 8-20dB, the flexible interface layer is thin and convenient to construct, the ceramic tile glue can be thinly pasted, and the floor clear space height is increased.

The liquid sound insulation coating adopts emulsified asphalt, rubber particles, polystyrene particles and expanded microsphere particles to be matched in size step by step to form a sound insulation pad with a plurality of micro cavities, and the liquid sound insulation coating is strong in binding power by combining with acrylic emulsion, enhances the stability of a tile system, and can be matched with tile glue for use.

Compared with the prior art, the scheme of the invention has the advantages that:

(1) the adhesive force is strong, and the stability of a tile system is enhanced. The acrylic emulsion has low Tg, good viscosity effect, enhanced cohesive force, good water resistance and cement compatibility, can form a flexible interface layer by matching with a specific content of emulsified asphalt which adopts anions and non-ions as emulsifying agents, can well release stress generated by ceramic tile glue or deformation difference between a base layer and a ceramic tile, reduces hollowing from the surface and increases the stability of a tile system.

(2) The construction is convenient and fast, and the floor clear space is increased. The liquid sound-insulation coating is prepared by mixing at normal temperature, is constructed in a brushing or scraping mode, is simple to construct, can be independently attached to tiles and can also be matched with floor tile glue plaster construction, the floor clear space is increased, and sound insulation can be effectively realized by the thickness of 2-5 mm. Compared with the existing sound insulation mortar, the sound insulation mortar requires a thickness of at least 3cm and has better sound insulation and shock absorption effects.

(3) Has good impact force reduction, improves the sound insulation effect, and is environment-friendly and energy-saving. Adopt emulsified asphalt, rubber particle, polystyrene granule, hollow expansion granule are according to particle size gradation, form the sound insulation pad that has a plurality of tiny cavitys, and its elasticity, stretching resistance, heat resistance are showing and are improving, can realize good syllable-dividing effect to the striking, also can glue the collocation with the ceramic tile simultaneously and use, then the effect is better. The polystyrene particles are 0.5mm-1mm foamed polystyrene particles; the rubber powder is 20-mesh waste rubber tire powder, the material is environment-friendly and easy to obtain, and the production cost is reduced.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the present embodiment.

The applicant improves processing technology and equipment, and obtains the liquid sound insulation coating through thousands of test tests, and the liquid sound insulation coating comprises the following components in percentage by weight: acrylic emulsion: 10-20%, emulsified asphalt: 10-20%, rubber powder 20 mesh: 30-50%, polystyrene particles: 5-15%, thickening agent: 0.1-0.5%, crosslinking agent: 0.1-0.3%, water: 2-20 percent of acrylic emulsion, wherein the solid content of the acrylic emulsion is 50 percent, the Tg is-20 ℃, namely the glass state-to-high elastic state transition temperature is minus 20 ℃, and the acrylic emulsion has good water resistance and cement compatibility; the emulsified asphalt adopts anions and non-ions as an emulsifier, and has good compatibility with the acrylic emulsion.

The invention adopts special emulsion and emulsified asphalt to compound special damping material to form an interface material which is formed on site and can be obtained by mixing at normal temperature. The cross-linking agent with a specific proportion is selected, so that the system can be dried within 1 hour under standard curing conditions.

As a preferred scheme, the liquid sound insulation coating specifically comprises the following components in percentage by weight: 12-18%, emulsified asphalt: 12-18%, rubber powder 20 mesh: 35-45%, polystyrene particles: 7-12%, thickening agent: 0.1-0.5%, crosslinking agent: 0.1-0.3%, water: 5 to 18 percent.

For increasing the number of the tiny cavities of the coating and improving the sound insulation effect, the liquid sound insulation coating further comprises expanded microspheres: 2-5%, the expanded microsphere is a polyurethane microsphere with resilience, and the particle size is as follows: 20-40 um. The liquid sound insulation coating comprises the following components in percentage by weight: acrylic emulsion: 13-17%, emulsified asphalt: 13-16%, rubber powder 20 mesh: 37-42%, expanded microspheres: 3-5%, polystyrene particles: 7-10%, thickening agent: 0.1-0.5%, crosslinking agent: 0.1-0.3%, water: 6 to 15 percent.

Scheme of the invention four formulations are exemplified below

Composition (I)	Example 1	Example 2	Example 3	Example 4
					Water (W)	17.65％	11.7％	10.6％	4.6％
Acrylic emulsion	20％	15％	18％	20％
					Emulsified asphalt	20％	20％	15％	10％
Rubber powder	30％	35％	40％	45％
					Expanded microspheres	2％	3％	4％	5％
Polystyrene particles	10％	15％	15％	15％
					Crosslinking agent	0.2％	0.2％	0.3％	0.3％
Thickening agent	0.15％	0.1％	0.1％	0.1％

Impact sound insulation effect and residential sound insulation requirements are tested according to the following national standards:

GB/T50121-2005 building sound insulation evaluation Standard, GB 50118-: floor impact sound insulation field measurements.

The test results for the above examples were obtained as follows:

tests prove that the sound insulation effect of the liquid sound insulation coating is greatly improved compared with the existing sound insulation mortar, the tensile bonding strength and the tensile bonding strength after thermal aging are better than those of the existing products, and the liquid sound insulation coating has unexpected excellent effects.