阅读说明：本技术 遇水自愈合柔性防水材料 (Flexible waterproof material capable of self-healing in water ) 是由 刘涛 王亮 候康 林善武 于 2019-10-29 设计创作，主要内容包括：本发明公开了一种遇水自愈合柔性防水材料,防水材料原料按重量比包括60-90％的SBS改性乳化沥青和10-40％遇水膨胀自愈防水填料,所述遇水膨胀自愈防水填料由膨胀源内核和包埋膨胀源内核的非水溶性包膜组成,所述遇水膨胀自愈防水填料的原料按重量份包括以下组分：膨胀源100份、长链烷基化合物1-5份、包膜剂8-30份；通过柔性防水材料中直接添加遇水膨胀自愈防水填料而不改变原有的处理工艺和施工工艺,SBS改性乳化沥青和遇水膨胀自愈防水填料相容性好,在防水性能上协同增强,当防水涂层受到损坏后,会导致防水材料中的膨胀自愈防水填料外露,遇水膨胀,填充裂缝、孔隙以及防水层薄弱处,并且补偿膨胀力,使得防水结构再次受压致密,达到双重保护的目的,增强防水力度和防水的持久性。(The invention discloses a water-swelling self-healing flexible waterproof material, which comprises 60-90% of SBS modified emulsified asphalt and 10-40% of water-swelling self-healing waterproof filler in parts by weight, wherein the water-swelling self-healing waterproof filler consists of an expansion source core and a non-water-soluble envelope for embedding the expansion source core, and the water-swelling self-healing waterproof filler comprises the following components in parts by weight: 100 parts of an expansion source, 1-5 parts of a long-chain alkyl compound and 8-30 parts of a coating agent; through directly adding water-swelling self-healing waterproof filler in the flexible waterproof material and not changing original processing technology and construction process, SBS modified emulsified asphalt and water-swelling self-healing waterproof filler compatibility are good, strengthen in coordination on waterproof performance, receive the back of damaging when waterproof coating, can lead to the swelling self-healing waterproof filler in the waterproof material to expose, water-swelling, fill crack, hole and waterproof layer weak department, and compensate the expansibility, make waterproof construction pressurized compactness once more, reach duplicate protection's purpose, strengthen waterproof dynamics and waterproof persistence.)

1. The utility model provides a meet flexible waterproof material of water self-healing which characterized in that: the waterproof material raw materials are composed of 60-90% of SBS modified emulsified asphalt and 10-40% of water-swelling self-healing waterproof filler according to the weight ratio, the water-swelling self-healing waterproof filler is composed of an expansion source inner core and a water-insoluble coating embedding the expansion source inner core, and the water-swelling self-healing waterproof filler is prepared from the following raw materials in parts by weight: 100 parts of an expansion source, 1-5 parts of a long-chain alkyl compound and 8-30 parts of a coating agent, wherein the expansion source comprises bentonite and/or super absorbent resin.

2. The water self-healing flexible waterproof material according to claim 1, characterized in that: the waterproof material raw material consists of 70 percent of SBS modified emulsified asphalt and 30 percent of water-swelling self-healing waterproof filler according to the weight ratio.

3. The water self-healing flexible waterproof material according to claim 2, characterized in that: the long-chain alkyl compound is an alkyl compound of C16-C18.

4. The water self-healing flexible waterproof material according to claim 3, characterized in that: the long-chain alkyl compound is one or a mixture of more than two of stearic acid and salt compounds thereof, oleic acid and salt compounds thereof, stearamide, octadecylamine, octadecyl trimethyl ammonium chloride and hexadecyl dimethyl ammonium chloride.

5. The water self-healing flexible waterproof material according to claim 4, characterized in that: the coating agent is one or a mixture of more than two of paraffin, chlorinated paraffin, solid asphalt, modified asphalt, rosin and modified rosin.

6. The water self-healing flexible waterproof material according to claim 5, characterized in that: the bentonite and the super absorbent resin are both powder.

7. The water self-healing flexible waterproof material according to claim 1, characterized in that: the water-swellable self-healing waterproof filler comprises the following raw materials in parts by weight: 100 parts of an expansion source, 3 parts of a long-chain alkyl compound and 20 parts of a coating agent.

Technical Field

The invention relates to a waterproof material, in particular to a flexible waterproof material capable of self-healing when meeting water.

Background

The flexible waterproof material is mainly asphalt, asphalt felt and other organic material, also called asphalt felt coiled material waterproof layer, and is waterproof layer formed by using asphalt felt, glass cloth and other fiber fabric as base layer and various kinds of cementing material asphalt, etc. to adhere the coiled material to the leveling layer on the roof structure board. The flexible waterproof material has toughness and is suitable for certain deformation and expansion and contraction, but the plasticity of the flexible waterproof material is poor, so that the flexible waterproof material cannot well treat waterproof parts with variable or narrow opposite properties, gaps and weak points are easily left, the parts with damp base surfaces and high base surface osmotic pressure are easily layered and fall off, the formed waterproof layer is easily damaged by puncture, and the service life of the flexible waterproof material is short.

Disclosure of Invention

In view of the above, the present invention provides a water-swelling self-healing flexible waterproof material, which is prepared by directly adding a water-swelling self-healing waterproof filler to SBS modified emulsified asphalt without changing the original treatment process and construction process, and when a waterproof coating is damaged, the swelling self-healing waterproof filler in the waterproof material is exposed, swells when it encounters water, fills cracks, and compensates for swelling force, so that a waterproof structure is compressed and compacted again to achieve the purpose of double protection.

The water-swelling self-healing flexible waterproof material comprises, by weight, 60-90% of SBS modified emulsified asphalt and 10-40% of water-swelling self-healing waterproof filler, wherein the water-swelling self-healing waterproof filler comprises an expansion source core and a non-water-soluble coating for embedding the expansion source core, and the water-swelling self-healing waterproof filler comprises the following raw materials in parts by weight: 100 parts of an expansion source, 1-5 parts of a long-chain alkyl compound and 8-30 parts of a coating agent, wherein the expansion source comprises bentonite and/or super absorbent resin;

further, the raw materials of the waterproof material consist of 70 percent of SBS modified emulsified asphalt and 30 percent of water-swelling self-healing waterproof filler according to the weight ratio;

further, the long-chain alkyl compound is an alkyl compound of C16-C18;

further, the long-chain alkyl compound is one or a mixture of more than two of stearic acid and salt compounds thereof, oleic acid and salt compounds thereof, stearamide, octadecylamine, octadecyl trimethyl ammonium chloride and hexadecyl dimethyl ammonium chloride;

further, the coating agent is one or a mixture of more than two of paraffin, chlorinated paraffin, solid asphalt, modified asphalt, rosin and modified rosin;

further, the bentonite and the super absorbent resin are both powder;

further, the waterproof filler comprises the following raw materials in parts by weight: 100 parts of an expansion source, 3 parts of a long-chain alkyl compound and 20 parts of a coating agent.

The invention has the beneficial effects that: according to the water-swelling self-healing waterproof material, the water-swelling self-healing waterproof filler is directly added into the flexible waterproof material without changing the original treatment process and construction process, the SBS modified emulsified asphalt and the water-swelling self-healing waterproof filler have good compatibility, and the waterproof performance is cooperatively enhanced. The adopted expansion self-healing waterproof filler takes bentonite powder and super-absorbent resin powder as expansion sources, forms independent waterproof powder filler after being embedded by the coating agent, can be filled in flexible waterproof materials without changing the construction process of the flexible waterproof materials, cannot influence the original performance of the materials after being added, and has simple raw materials and strong universality.

Detailed Description

The water-swelling self-healing flexible waterproof material comprises 60-90% of SBS modified emulsified asphalt and 10-40% of water-swelling self-healing waterproof filler according to the weight ratio, wherein the water-swelling self-healing waterproof filler comprises an expansion source inner core and a water-insoluble coating embedding the expansion source inner core, and the water-swelling self-healing waterproof filler comprises the following components in parts by weight: 100 parts of an expansion source, 1-5 parts of a long-chain alkyl compound and 8-30 parts of a coating agent, wherein the expansion source comprises bentonite and/or super absorbent resin; the water-swelling self-healing waterproof filler is of a membrane core structure, the swelling source bentonite core super-absorbent resin is used as a core, and the water-swelling self-healing waterproof filler is added into the flexible waterproof material through embedding treatment, so that the performance and the treatment process of the flexible waterproof material cannot be influenced. The water-meeting self-healing flexible waterproof material can be prepared by mixing and grinding the raw materials, and the process is simple.

In this embodiment, the long-chain alkyl compound is one or a mixture of two or more of stearic acid and a salt compound thereof, oleic acid and a salt compound thereof, stearamide, octadecylamine, octadecyltrimethyl ammonium chloride, and hexadecyl dimethyl ammonium chloride.

In this embodiment, the coating agent is one or a mixture of two or more of paraffin, chlorinated paraffin, solid asphalt, modified asphalt, rosin and modified rosin; the coating agent is insoluble in water, is solid powder or paste at room temperature, and has a melting temperature lower than 130 ℃.

In this embodiment, the bentonite and the super absorbent resin are both powders;

in this embodiment, the bentonite, the super water absorbent resin and the coating agent are mixed and ground to obtain the self-healing flexible waterproof material meeting water. The grinding mode is sand grinding, ball milling, roller milling and the like;

in the embodiment, the waterproof filler comprises the following raw materials in parts by weight: 100 parts of an expansion source, 3 parts of a long-chain alkyl compound and 20 parts of a coating agent. Is a preferred embodiment.