阅读说明：本技术 一种环保净味改性沥青防水卷材及其制备方法 (Environment-friendly odorless modified asphalt waterproof coiled material and preparation method thereof ) 是由 郑志华 赵普 潘鑫 高云龙 何子豪 张琼之 罗昆祥 李坤 于�玲 于 2020-06-24 设计创作，主要内容包括：本发明提供一种环保净味改性沥青防水卷材,包括改性沥青、丙纶布、PE膜,所述改性沥青由如下按照重量份数计的原料组成：沥青38-42份、废旧胶粉18-22份、高分子聚合物15-20份、抗氧剂0.5-1份、气味抑制剂0.5-0.8份,界面活性剂0.3-0.6份和填料10-15份。本发明还提供了一种环保净味改性沥青防水卷材的制备方法,本发明的采用废旧胶粉生产防水卷材,通过界面活性剂降低改性沥青制备温度,减少沥青性能老化,同时通过物理温度和气味抑制剂协调作用,抑制H<Sub>2</Sub>S,SO<Sub>2</Sub>,NO<Sub>X</Sub>等沥青烟气的生成和挥发,大大提高防水卷材生产过程中沥青烟气的排放,提高生产工艺的环保性。(The invention provides an environment-friendly odorless modified asphalt waterproof coiled material which comprises modified asphalt, polypropylene fabric and a PE (polyethylene) film, wherein the modified asphalt comprises the following raw materials in parts by weight: 38-42 parts of asphalt, 18-22 parts of waste rubber powder, 15-20 parts of high molecular polymer, 0.5-1 part of antioxidant, 0.5-0.8 part of odor inhibitor, 0.3-0.6 part of surfactant and 10-15 parts of filler. The invention also provides a preparation method of the environment-friendly odorless modified asphalt waterproof coiled material, the waterproof coiled material is produced by adopting the waste rubber powder, the preparation temperature of the modified asphalt is reduced through the surfactant, the performance aging of the asphalt is reduced, and simultaneously H is inhibited through the coordination effect of the physical temperature and the odor inhibitor 2 S，SO 2 ，NO X And the generation and volatilization of asphalt smoke are waited, so that the emission of asphalt smoke in the production process of the waterproof coiled material is greatly improved, and the environmental protection of the production process is improved.)

1. An environment-friendly odor-free modified asphalt waterproof coiled material comprises modified asphalt, polypropylene fabric and a PE film, and is characterized in that: the modified asphalt comprises the following raw materials in parts by weight:

38-42 parts of asphalt, 18-22 parts of waste rubber powder, 15-20 parts of high molecular polymer, 0.5-1 part of antioxidant, 0.5-0.8 part of odor inhibitor, 0.3-0.6 part of surfactant and 10-15 parts of filler.

2. The environmental-friendly odor-free modified asphalt waterproof roll material according to claim 1, characterized in that: the high molecular polymer is one or more of styrene butadiene triblock copolymer (SBS), natural rubber and Styrene Butadiene Rubber (SBR).

3. The environmental-friendly odor-free modified asphalt waterproof roll material according to claim 1, characterized in that: the odor inhibitor is one or more of vanillin, benzaldehyde, n-heptanal, trans-2-hexenal, hexadecanal, n-butyl acetate, n-pentyl acetate, pentyl acetate and dodecyl methacrylate.

4. The environmental-friendly odor-free modified asphalt waterproof roll material according to claim 1, characterized in that: the antioxidant is dibutyl hydroxy toluene (BHT).

5. The environmental-friendly odor-free modified asphalt waterproof roll material as claimed in claim 1, characterized in that: the surfactant is C8-C12 alkylolamide.

6. The environmental-friendly odor-free modified asphalt waterproof roll material according to claim 1, characterized in that: the filler is calcium carbonate and carbon powder, and the mesh size is higher than 700 meshes.

7. The preparation method of the environment-friendly odorless modified asphalt waterproof coiled material as claimed in claim 1 is characterized by comprising the following steps:

(1) heating asphalt to 150 ℃, adding measured waste rubber powder, high molecular polymer and surfactant, heating to 165-175 ℃, starting a stirrer, and controlling the rotating speed at 100 r/min;

(2) after uniformly mixing, grinding by a colloid mill, adding the antioxidant, the odor inhibitor and the filler which are measured, and stirring for 30min to prepare the modified asphalt;

(3) adding the above into a screw extruder, extruding a matrix through the screw extruder, simultaneously introducing polypropylene fabric into a pair of drafting rollers from two sides while extruding the matrix, extruding the polypropylene fabric and the matrix through the rollers, hot-pressing and compounding the polypropylene fabric and the matrix into a whole, cooling, and finally attaching a PE film on the surface to form the waterproof coiled material.

Technical Field

The invention relates to an environment-friendly odorless modified asphalt waterproof coiled material and a preparation method thereof.

Background

Since the seventies, developed countries in the world have changed in the aspect of waterproof material structures, and have gradually developed to novel waterproof materials such as modified asphalt, self-adhesive materials, synthetic polymer materials, and the like. At present, foreign novel waterproof materials account for more than 90% of the total amount of the market, and the quality, the function and the service life of products reach a higher level. Since the asphalt coiled material is applied in the last 70 th century in China, asphalt waterproof materials are always the leading products of building waterproofing, which account for about 70% of the total market amount recently, only about 10% of high polymer waterproof materials, and other waterproof coatings and other waterproof materials. The polyethylene polypropylene fiber composite waterproof coiled material is a popular waterproof material, but the polyethylene polypropylene fiber composite waterproof coiled material in the market still has a plurality of problems, such as poor waterproof performance, low tensile property, non-ideal environmental protection effect, fussy construction and the like.

The elastomer modified asphalt waterproof coiled material (SBS) produced in China at present is basically mature in technology, but still has many problems, and due to a series of reasons that in the material preparation process, the dosage is not accurate enough, the temperature control is unstable in the oxidation process, the proportioning method is too old and the like, the product quality is unstable, and the defects of poor ageing resistance and oxidation resistance, low elongation and short service life exist. A large amount of asphalt smoke is generated in the process of heating asphalt to prepare asphalt products and the process of heating asphalt to prepare waterproof rolls, which has serious influence on the surrounding environment and is harmful to the health of people.

The smoke contains various organic matters including carbocyclic hydrocarbon, cyclic hydrocarbon derivatives and other compounds, which have harmful effects on human health, and the asphalt smoke contains various polycyclic aromatic hydrocarbon substances including benzopyrene, benzanthracene, carbazole and the like, most of which are carcinogenic and strong carcinogenic substances, the particle size is 0.1-1.0 mu m mostly, the minimum is only 0.01 mu m, the maximum is about 10.0 mu m, and especially the smoke contains various carcinogenic substances represented by 3, 4-benzopyrene. The main way of harming human health is to attach the fly ash below 8um and suck the fly ash into human body through respiratory tract. Therefore, the purification treatment of the asphalt smoke is very necessary to ensure that the emission meets the atmospheric environmental standard.

CN108382039A provides a net flavor modified asphalt waterproof coiled material, which comprises modified asphalt, polypropylene fabric and a PE film, wherein the modified asphalt comprises the following components in parts by weight: 35-45 parts of asphalt, 15-25 parts of waste rubber powder, 15-30 parts of SBS rubber, 0.5-2 parts of stabilizer, 0.5-1 part of antioxidant, 0.5-1 part of odor inhibitor and 10-20 parts of filler. Because the temperature of the modified asphalt is higher in the preparation process of the waterproof coiled material, the asphalt is easy to age, and the waterproof durability of the coiled material is different.

Disclosure of Invention

The invention aims to overcome the defects and provide an environment-friendly and odor-free modified asphalt waterproof coiled material and a preparation method thereof, so that the product formula is further improved, the production temperature of the waterproof coiled material is reduced, the asphalt performance aging is reduced, and the volatilization of harmful gases is further reduced through the reduction of physical temperature.

In order to solve the technical problems, the invention adopts the following technical scheme:

the environment-friendly odor-free modified asphalt waterproof coiled material comprises modified asphalt, polypropylene fabric and a PE (polyethylene) film, wherein the modified asphalt comprises the following raw materials in parts by weight:

38-42 parts of asphalt, 18-22 parts of waste rubber powder, 15-20 parts of high molecular polymer, 0.5-1 part of antioxidant, 0.5-0.8 part of odor inhibitor, 0.3-0.6 part of surfactant and 10-15 parts of filler.

Further, the high molecular polymer is one or more of styrene butadiene triblock copolymer (SBS), natural rubber and Styrene Butadiene Rubber (SBR).

Further, the odor inhibitor is one or more of vanillin, benzaldehyde, n-heptanal, trans-2-hexenal, hexadecanal, n-butyl acetate, n-pentyl acetate, pentyl acetate and dodecyl methacrylate.

Further, the antioxidant is dibutyl hydroxy toluene (BHT).

Further, the surfactant is C8-C12 alkylolamide.

Further, the filler is calcium carbonate and carbon powder, and the mesh size is higher than 700 meshes.

The invention also provides a preparation method of the environment-friendly odorless modified asphalt waterproof coiled material, which comprises the following steps:

(1) heating asphalt to 150 ℃, adding measured waste rubber powder, high molecular polymer and surfactant, heating to 165-175 ℃, starting a stirrer, and controlling the rotating speed at 100 r/min;

(2) after uniformly mixing, grinding by a colloid mill, adding the antioxidant, the odor inhibitor and the filler which are measured, and stirring for 30min to prepare the modified asphalt;

(3) adding the above into a screw extruder, extruding a matrix through the screw extruder, simultaneously introducing polypropylene fabric into a pair of drafting rollers from two sides while extruding the matrix, extruding the polypropylene fabric and the matrix through the rollers, hot-pressing and compounding the polypropylene fabric and the matrix into a whole, cooling, and finally attaching a PE film on the surface to form the waterproof coiled material.

The environment-friendly odorless modified asphalt waterproof coiled material has the beneficial effects that: the environment-friendly odorless modified asphalt waterproof coiled material further improves the product formula, reduces the preparation temperature of modified asphalt through a surfactant, reduces the performance aging of the asphalt, and inhibits H through the coordination effect of physical temperature and an odor inhibitor₂S，SO₂，NO_XAnd the generation and volatilization of asphalt smoke are waited, so that the emission of asphalt smoke in the production process of the waterproof coiled material is greatly improved, and the environmental protection of the production process is improved.

Detailed Description

The technical solution of the present invention is explained in detail with reference to the following examples.