阅读说明：本技术 一种环保的高分子复合防水卷材及其制备方法 (Environment-friendly polymer composite waterproof coiled material and preparation method thereof ) 是由 余学晖 周骏宇 于 2020-12-31 设计创作，主要内容包括：本发明提供一种环保的高分子复合防水卷材及其制备方法,该防水卷材由上无纺布层、中间防水层和下无纺布层复合而成；中间防水层含有以下重量份成分：线性低密度聚乙烯树脂50～65份,TPE热塑性弹性体15～20份,多孔氮化硅负载硬脂酸丁酯复合材料8～12份,阻燃剂10～15份,光屏蔽剂1～2份,抗氧剂0.5～1份,分散剂1～1.5份,助粘剂1～1.5份。本发明的一种环保的高分子复合防水卷材通过在防水卷材的中间防水层中添加多孔氮化硅负载硬脂酸丁酯复合材料使得防水卷材同时兼具防水和保温的功能。本发明的一种环保的高分子复合防水卷材通过一次成型挤出法制备,制备工艺简单,生产过程更加节能环保。(The invention provides an environment-friendly polymer composite waterproof coiled material and a preparation method thereof, wherein the waterproof coiled material is formed by compounding an upper non-woven fabric layer, a middle waterproof layer and a lower non-woven fabric layer; the middle waterproof layer comprises the following components in parts by weight: 50-65 parts of linear low-density polyethylene resin, 15-20 parts of TPE (thermoplastic elastomer), 8-12 parts of porous silicon nitride loaded butyl stearate composite material, 10-15 parts of flame retardant, 1-2 parts of light shielding agent, 0.5-1 part of antioxidant, 1-1.5 parts of dispersing agent and 1-1.5 parts of adhesion promoter. According to the environment-friendly polymer composite waterproof coiled material, the porous silicon nitride loaded butyl stearate composite material is added into the middle waterproof layer of the waterproof coiled material, so that the waterproof coiled material has waterproof and heat-insulating functions. The environment-friendly polymer composite waterproof coiled material is prepared by a one-step forming extrusion method, the preparation process is simple, and the production process is more energy-saving and environment-friendly.)

1. An environment-friendly polymer composite waterproof coiled material is characterized in that the waterproof coiled material is formed by compounding an upper non-woven fabric layer, a middle waterproof layer and a lower non-woven fabric layer; the middle waterproof layer comprises the following components in parts by weight: 50-65 parts of linear low-density polyethylene resin, 15-20 parts of TPE (thermoplastic elastomer), 8-12 parts of porous silicon nitride loaded butyl stearate composite material, 10-15 parts of flame retardant, 1-2 parts of light shielding agent, 0.5-1 part of antioxidant, 1-1.5 parts of dispersing agent and 1-1.5 parts of adhesion promoter.

2. The environment-friendly polymer composite waterproof roll according to claim 1, wherein the strength of the porous silicon nitride-loaded butyl stearate composite material is greater than 150 MPa.

3. The environment-friendly polymer composite waterproof roll as claimed in claim 2, wherein the porous silicon nitride-loaded butyl stearate composite material is prepared by the following method: immersing porous silicon nitride into butyl stearate liquid, performing solid-liquid separation after immersing for 3-6 h, and drying the porous silicon nitride for 2-3 h at 40-50 ℃.

4. The environment-friendly polymer composite waterproof roll according to claim 3, wherein the strength of the porous silicon nitride is more than 150MPa, and the porosity is more than 50%.

5. The environment-friendly polymer composite waterproof roll according to claim 4, wherein the loading amount of butyl stearate in the porous silicon nitride-loaded butyl stearate composite material is 35-40%.

6. The environmental-friendly polymer composite waterproof roll according to any one of claims 1 to 5, wherein the upper nonwoven fabric layer or the lower nonwoven fabric layer is a PET polyester nonwoven fabric.

7. The environment-friendly polymer composite waterproof roll according to claim 6, wherein the flame retardant is at least one of decabromodiphenylethane and antimony oxide.

8. The environment-friendly polymer composite waterproof roll according to claim 7, wherein the flame retardant is decabromodiphenylethane and antimony oxide, and the mass ratio of the decabromodiphenylethane to the antimony oxide is (1-1.5): 1.

9. the preparation method of the environment-friendly polymer composite waterproof roll material as claimed in any one of claims 1 to 8, which is characterized by comprising the following steps:

adding linear low-density polyethylene resin, TPE thermoplastic elastomer, porous silicon nitride loaded butyl stearate composite material, flame retardant, light shielding agent, antioxidant, dispersant and adhesion promoter into a mixer, and uniformly mixing to obtain a mixed material;

feeding the mixed material into a screw extruder to be melted and extruded into an intermediate waterproof layer;

and simultaneously introducing the upper non-woven fabric layer and the lower non-woven fabric layer into a pair of drafting rollers from two sides while extruding the middle waterproof layer, and hot-pressing and compounding the middle waterproof layer, the upper non-woven fabric layer and the lower non-woven fabric layer into a whole by roller extrusion to obtain the waterproof roll.

10. The preparation method of the environment-friendly polymer composite waterproof roll according to claim 9, wherein the melt extrusion temperature is 155-165 ℃.

Technical Field

The invention belongs to the technical field of building materials, and particularly relates to an environment-friendly polymer composite waterproof coiled material and a preparation method thereof.

Background

The waterproof roll is mainly used for building walls, roofs, tunnels, highways, refuse landfill plants and the like, can be curled into a roll-shaped flexible building material product for resisting external rainwater and underground water leakage, is used as a leakage-free connection between an engineering foundation and a building, is a waterproof first barrier of the whole engineering, and plays a vital role in the whole engineering. According to different main composition materials, the waterproof material is divided into an asphalt waterproof coiled material, a high polymer modified waterproof coiled material and a synthetic high polymer waterproof coiled material; the coiled materials are divided into coiled materials without a matrix, coiled materials with a paper matrix, coiled materials with a glass fiber matrix, coiled materials with a glass cloth matrix and coiled materials with a polyethylene matrix according to different matrixes. Asphalt-based waterproof rolls can generate a large amount of waste gas during preparation of asphalt, so that the environment is seriously polluted, and accidents such as scalding and fire disasters are easy to happen, so that the research on polymer composite waterproof rolls with excellent performance to replace asphalt-based waterproof rolls is a mainstream research direction at present.

Along with the continuous improvement of people's living standard, people also are more and more high to waterproofing membrane's requirement, not only require it to have excellent waterproof performance, still require it to have good thermal insulation performance, develop novel waterproofing and heat preservation of collection in waterproofing membrane of an organic whole can overcome the defect that traditional waterproof and heat preservation separately constructed for the building has better waterproof and heat preservation function. For example, chinese patent CN201220202227.0 discloses a high-molecular composite heat-insulating waterproof roll, which relates to a composite waterproof roll. The PE single-layer casting film comprises a first PE single-layer casting film, a second PE single-layer casting film, a first single-layer non-woven fabric and a second single-layer non-woven fabric, wherein the first single-layer non-woven fabric is arranged on the outer surface of the first PE single-layer casting film; it also comprises a heat-insulating sheet material; the heat-insulating sheet is arranged between the first PE single-layer casting film and the second PE single-layer casting film; the heat insulation sheet is a polyethylene foaming heat insulation sheet; this novel waterproof insulation effect is several times to ten times of traditional insulation material effect, and sound construction, and reduced the loaded down with trivial details construction procedure of traditional insulation material and waterproof material, saved manpower and material resources greatly and made its cost greatly reduced. Chinese patent CN201520278308.2 discloses a novel heat preservation polymer composite self-adhesive waterproof roll material discolours, and this roll material is multilayer laminated structure, and multilayer laminated structure is compound as an organic whole, its characterized in that, multilayer laminated structure arrange in order by last to down be: the coiled material comprises a protective layer, a color-changing layer, a first waterproof layer, a heat-insulating layer, a second waterproof layer, a self-adhesive layer and an isolation film layer, wherein the color-changing layer is a temperature-sensing reversible color-changing plastic film layer and is covered on the first waterproof layer, and the coiled material solves the technical problems that the existing coiled material cannot adjust the temperature, has poor heat-insulating effect and the like. The color can be adjusted according to the temperature change, sunlight is absorbed or reflected, the temperature is adjusted, and the heat insulation effect is good due to the use of the aerogel heat insulation material. Meanwhile, the adhesive has high extension, high strength and high and low temperature resistance, and the self-adhesive layer is fully bonded with a base surface. The self-adhesive layer cold bonding construction and the waterproof layer welding construction are combined, the waterproof effect is good, and leakage is avoided.

Both of the above-mentioned patents make waterproofing membrane have the effect of heat preservation simultaneously through set up one deck insulation material in multilayer waterproofing membrane, however, the waterproofing membrane of this kind of structure has following defect: the waterproof roll is formed by compounding a plurality of layers (more than three layers) of film materials, different layers are bonded and pressed into a whole through adhesives, the number of layer interfaces is large, and when the environmental temperature is high, such as the temperature in summer reaches more than 27 ℃, the local greenhouse phenomenon easily occurs at the interfaces of different layers, so that the bulge phenomenon is easily generated on the waterproof roll with the multilayer structure, and the waterproof performance of the waterproof roll is reduced; on the other hand, the preparation process of the waterproof roll material with the multilayer structure is complex, and the production process is not energy-saving and environment-friendly enough.

Disclosure of Invention

The invention aims to provide an environment-friendly polymer composite waterproof coiled material and a preparation method thereof aiming at the defects of the prior art.

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

an environment-friendly polymer composite waterproof coiled material is formed by compounding an upper non-woven fabric layer, a middle waterproof layer and a lower non-woven fabric layer; the middle waterproof layer comprises the following components in parts by weight: 50-65 parts of linear low-density polyethylene resin, 15-20 parts of TPE (thermoplastic elastomer), 8-12 parts of porous silicon nitride loaded butyl stearate composite material, 10-15 parts of flame retardant, 1-2 parts of light shielding agent, 0.5-1 part of antioxidant, 1-1.5 parts of dispersing agent and 1-1.5 parts of adhesion promoter.

Preferably, the strength of the porous silicon nitride-supported butyl stearate composite material is more than 150 MPa.

Preferably, the porous silicon nitride-loaded butyl stearate composite material is prepared by the following method: immersing porous silicon nitride into butyl stearate liquid, performing solid-liquid separation after immersing for 3-6 h, and drying the porous silicon nitride for 2-3 h at 40-50 ℃.

Preferably, the strength of the porous silicon nitride is more than 150MPa, and the porosity is more than 50%.

Preferably, the loading amount of butyl stearate in the porous silicon nitride loaded butyl stearate composite material is 35-40%.

Preferably, the upper non-woven fabric layer or the lower non-woven fabric layer is a PET polyester non-woven fabric.

Preferably, the flame retardant is at least one of decabromodiphenylethane and antimony oxide.

Preferably, the flame retardant is decabromodiphenylethane and antimony oxide, and the mass ratio of the decabromodiphenylethane to the antimony oxide is (1-1.5): 1.

the invention also provides a preparation method of the environment-friendly polymer composite waterproof coiled material, which comprises the following steps:

adding linear low-density polyethylene resin, TPE thermoplastic elastomer, porous silicon nitride loaded butyl stearate composite material, flame retardant, light shielding agent, antioxidant, dispersant and adhesion promoter into a mixer, and uniformly mixing to obtain a mixed material;

feeding the mixed material into a screw extruder to be melted and extruded into an intermediate waterproof layer;

and simultaneously introducing the upper non-woven fabric layer and the lower non-woven fabric layer into a pair of drafting rollers from two sides while extruding the middle waterproof layer, and hot-pressing and compounding the middle waterproof layer, the upper non-woven fabric layer and the lower non-woven fabric layer into a whole by roller extrusion to obtain the waterproof roll.

Preferably, the melt extrusion temperature is 155-165 ℃.

Compared with the prior art, the invention has the beneficial effects that:

according to the environment-friendly polymer composite waterproof coiled material, the porous silicon nitride loaded butyl stearate composite material is added into the middle waterproof layer of the waterproof coiled material, so that the waterproof coiled material has waterproof and heat-insulating functions. The thermal conductivity of the middle waterproof layer material is reduced by utilizing the porosity of the porous silicon nitride, so that the waterproof layer has a heat preservation function; on the other hand, butyl stearate is used as a phase-change material with a low melting point, the phase-change temperature of the butyl stearate is 22-30 ℃, when the environmental temperature is high in summer, the butyl stearate absorbs environmental heat through phase change, the bulging phenomenon between different interface layers of the waterproof roll can be avoided or weakened, and the waterproof performance of the waterproof roll is further improved. In addition, after the butyl stearate is loaded on the porous silicon nitride, the porous silicon nitride can be utilized to play a role in heat preservation, the phenomenon that the butyl stearate leaks in the waterproof layer due to phase change can be prevented, and the durability of the waterproof roll is improved.

The environment-friendly polymer composite waterproof coiled material is prepared by a one-step forming extrusion method, the preparation process is simple, and the production process is more energy-saving and environment-friendly.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the specific details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the detailed description that follows.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It is to be understood that the processing equipment or apparatus not specifically identified in the following examples is conventional in the art.

Furthermore, it is to be understood that one or more method steps mentioned in the present invention does not exclude that other method steps may also be present before or after the combined steps or that other method steps may also be inserted between these explicitly mentioned steps, unless otherwise indicated; moreover, unless otherwise indicated, the numbering of the various method steps is merely a convenient tool for identifying the various method steps, and is not intended to limit the order in which the method steps are arranged or the scope of the invention in which the invention may be practiced, and changes or modifications in the relative relationship may be made without substantially changing the technical content.

The embodiment of the invention provides an environment-friendly polymer composite waterproof coiled material, which is formed by compounding an upper non-woven fabric layer, a middle waterproof layer and a lower non-woven fabric layer; the middle waterproof layer comprises the following components in parts by weight: 50-65 parts of linear low-density polyethylene resin, 15-20 parts of TPE (thermoplastic elastomer), 8-12 parts of porous silicon nitride loaded butyl stearate composite material, 10-15 parts of flame retardant, 1-2 parts of light shielding agent, 0.5-1 part of antioxidant, 1-1.5 parts of dispersing agent and 1-1.5 parts of adhesion promoter.

The light shielding agent, the antioxidant, the dispersing agent and the adhesion promoter in the embodiment of the invention are all common addition auxiliaries in the waterproof coiled material. In a specific embodiment, the light shielding agent is titanium dioxide, the antioxidant is 2, 6-tertiary butyl-4-methylphenol, and the dispersing agent is sodium dodecyl sulfate.

According to the environment-friendly polymer composite waterproof coiled material, the porous silicon nitride loaded butyl stearate composite material is added into the middle waterproof layer of the waterproof coiled material, so that the waterproof coiled material has waterproof and heat-insulating functions. The thermal conductivity of the middle waterproof layer material is reduced by utilizing the porosity of the porous silicon nitride, so that the waterproof layer has a heat preservation function; on the other hand, butyl stearate is used as a phase-change material with a low melting point, the phase-change temperature of the butyl stearate is 22-30 ℃, when the environmental temperature is high in summer, the butyl stearate absorbs environmental heat through phase change, the bulging phenomenon between different interface layers of the waterproof roll can be avoided or weakened, and the waterproof performance of the waterproof roll is further improved. In addition, after the butyl stearate is loaded on the porous silicon nitride, the porous silicon nitride can be utilized to play a role in heat preservation, the phenomenon that the butyl stearate leaks in the waterproof layer due to phase change can be prevented, and the durability of the waterproof roll is improved.

Preferably, the strength of the porous silicon nitride-supported butyl stearate composite material is greater than 150 MPa. Because the waterproof coiled material is formed by hot-pressing and extruding through a screw extruder, in order to ensure that the porous silicon nitride-loaded butyl stearate composite material can better keep the original appearance in the hot-pressing process and prevent the material performance from being reduced due to collapse of the porous material structure caused by extrusion, the porous silicon nitride-loaded butyl stearate composite material needs to have enough structural strength. The porous silicon nitride material can still maintain high structural strength on the basis of higher porosity.

Preferably, the porous silicon nitride-loaded butyl stearate composite material is prepared by the following method: and (3) soaking the porous silicon nitride into butyl stearate liquid for 3-6 h, then carrying out solid-liquid separation, and drying the soaked porous silicon nitride at 40-50 ℃ for 2-3 h.

Preferably, the strength of the porous silicon nitride is more than 150MPa, and the porosity is more than 50%. The high-strength porous silicon nitride can enable the composite material loaded with the butyl stearate to still maintain high structural strength, and the high porosity can enable the prepared composite material to have good heat insulation performance and enable the porous silicon nitride to be loaded with enough butyl stearate. Porous silicon nitride is commercially available or can be prepared by known techniques. The porous silicon nitride is prepared by the following method:

based on the weight of the porous silicon nitride, 1% of alumina, 2% of yttrium oxide, 0.1% of ammonium polyacrylate, 9% of monomer acrylamide and 1% of N, N' -methylene-bisacrylamide are added, deionized water is added to adjust the pH value to 10, ball milling is carried out for 24 hours to prepare slurry, 0.5% of ammonium persulfate is added after the slurry is vacuumed and defoamed, and the slurry is crosslinked and cured at the temperature of 80 ℃ for molding. And (3) sintering the molded blank in a vacuum furnace, introducing 0.8MPa nitrogen at 800 ℃, heating to 300 ℃ at 15 ℃/min, heating to 600 ℃ at 10 ℃/min, heating to 1400 ℃ at 15 ℃/min, preserving heat for 30min, heating to 1700 ℃ at 10 ℃/min, preserving heat for 60min, and naturally cooling to obtain the porous silicon nitride. The strength of the prepared porous silicon nitride is more than 150MPa, and the porosity is 51-55%.

Preferably, the loading amount of butyl stearate in the porous silicon nitride loaded butyl stearate composite material is 35-40%. The high enough loading of butyl stearate can make the waterproof coiled material have good heat preservation and insulation performance.

Preferably, the upper non-woven fabric layer or the lower non-woven fabric layer is a PET polyester non-woven fabric. The PET polyester non-woven fabric has good light reflection performance, and can reflect sunlight irradiated to the surface of the waterproof roll material to reduce the surface temperature of the waterproof roll material, so that the waterproof roll material is less prone to thermal deformation. And the PET polyester non-woven fabric has good mechanical property, high toughness, strong puncture resistance, friction resistance, good high temperature and low temperature resistance and corrosion resistance.

Preferably, the flame retardant is at least one of decabromodiphenylethane and antimony oxide. The decabromodiphenyl ethane has good thermal stability and strong ultraviolet resistance, does not generate toxic polybrominated dibenzo dioxane and polybrominated dibenzofuran during cracking or burning, does not cause harm to the environment, has no toxicity, and meets the requirements of environment-friendly materials. Antimony oxide is also a commonly used heat retardant, but when antimony oxide is used as a flame retardant alone, the using amount is large, and the heat retardant effect is not good in the flame retardant effect of a composite flame retardant, so that more preferably, the flame retardant in the embodiment of the invention is a composite of decabromodiphenylethane and antimony oxide, and the mass ratio of the decabromodiphenylethane to the antimony oxide in the composite is (1-1.5): 1. the two flame retardants in the compound have a synergistic effect, so that the flame retardant effect is better, and the flame retardant oxygen index reaches 28-30%.

The embodiment of the invention also provides a preparation method of the environment-friendly polymer composite waterproof coiled material, which comprises the following steps:

(1) adding the linear low-density polyethylene resin, the TPE thermoplastic elastomer (styrene thermoplastic elastomer), the porous silicon nitride loaded butyl stearate composite material, the flame retardant, the light shielding agent, the antioxidant, the dispersing agent and the adhesion promoter into a mixer according to the formula ratio, and uniformly mixing to obtain a mixed material;

(2) feeding the mixed material into a screw extruder to be melted and extruded into an intermediate waterproof layer; preferably, the melt extrusion temperature is 155-165 ℃.

(3) And simultaneously introducing the upper non-woven fabric layer and the lower non-woven fabric layer into a pair of drafting rollers from two sides while extruding the middle waterproof layer, and hot-pressing and compounding the middle waterproof layer, the upper non-woven fabric layer and the lower non-woven fabric layer into a whole by roller extrusion to obtain the waterproof roll.

The environment-friendly polymer composite waterproof coiled material is prepared by a one-step forming extrusion method, the preparation process is simple, and the production process is more energy-saving and environment-friendly.

The following is a further description with reference to specific examples.

Example 1

The embodiment 1 of the invention provides an environment-friendly polymer composite waterproof roll and a preparation method thereof, wherein the waterproof roll is formed by compounding an upper non-woven fabric layer, a middle waterproof layer and a lower non-woven fabric layer; the middle waterproof layer comprises the following components in parts by weight: 50 parts of linear low-density polyethylene resin, 20 parts of TPE (thermoplastic elastomer), 8 parts of porous silicon nitride loaded butyl stearate composite material, 1 part of flame retardant, 1 part of light shielding agent, 0.5 part of antioxidant, 1 part of dispersing agent and 1 part of adhesion promoter. Wherein, the upper non-woven fabric layer and the lower non-woven fabric layer are both PET polyester non-woven fabrics. The flame retardant is a compound of decabromodiphenylethane and antimony oxide, wherein the mass ratio of the decabromodiphenylethane to the antimony oxide in the compound is 1.1: 1.

the porous silicon nitride loaded butyl stearate composite material is prepared by the following method: and (2) soaking the porous silicon nitride in butyl stearate liquid for 3 hours, carrying out solid-liquid separation, and drying the porous silicon nitride at 50 ℃ for 2 hours. The loading amount of the impregnated butyl stearate is 35 percent, and the strength of the porous silicon nitride loaded butyl stearate composite material is more than 150 MPa.

The waterproof roll is prepared by the following method:

(1) adding the linear low-density polyethylene resin, the TPE thermoplastic elastomer, the porous silicon nitride loaded butyl stearate composite material, the flame retardant, the light shielding agent, the antioxidant, the dispersing agent and the adhesion promoter in the formula ratio into a mixer, and uniformly mixing to obtain a mixed material.

(2) Feeding the mixed material into a screw extruder to be melted and extruded into an intermediate waterproof layer; the melt extrusion temperature is 155-165 ℃.

(3) And simultaneously introducing the upper non-woven fabric layer and the lower non-woven fabric layer into a pair of drafting rollers from two sides while extruding the middle waterproof layer, and hot-pressing and compounding the middle waterproof layer, the upper non-woven fabric layer and the lower non-woven fabric layer into a whole by roller extrusion at the hot-pressing temperature of 155-165 ℃ to obtain the waterproof roll.

Example 1

The embodiment 1 of the invention provides an environment-friendly polymer composite waterproof roll and a preparation method thereof, wherein the waterproof roll is formed by compounding an upper non-woven fabric layer, a middle waterproof layer and a lower non-woven fabric layer; the middle waterproof layer comprises the following components in parts by weight: 50 parts of linear low-density polyethylene resin, 20 parts of TPE (thermoplastic elastomer), 8 parts of porous silicon nitride loaded butyl stearate composite material, 10 parts of flame retardant, 1 part of light shielding agent, 0.5 part of antioxidant, 1 part of dispersing agent and 1 part of adhesion promoter. Wherein, the upper non-woven fabric layer and the lower non-woven fabric layer are both PET polyester non-woven fabrics. The flame retardant is a compound of decabromodiphenylethane and antimony oxide, wherein the mass ratio of the decabromodiphenylethane to the antimony oxide in the compound is 1.1: 1.

the porous silicon nitride loaded butyl stearate composite material is prepared by the following method: soaking porous silicon nitride (strength of porous silicon nitride is greater than 150MPa and porosity is 52.6%) in butyl stearate liquid for 3h, separating solid from liquid, and drying porous silicon nitride at 50 deg.C for 2 h. The loading amount of the impregnated butyl stearate is 36 percent, and the strength of the porous silicon nitride loaded butyl stearate composite material is more than 150 MPa.

The waterproof roll is prepared by the following method:

(1) adding the linear low-density polyethylene resin, the TPE thermoplastic elastomer, the porous silicon nitride loaded butyl stearate composite material, the flame retardant, the light shielding agent, the antioxidant, the dispersing agent and the adhesion promoter in the formula ratio into a mixer, and uniformly mixing to obtain a mixed material.

(2) Feeding the mixed material into a screw extruder to be melted and extruded into an intermediate waterproof layer; the melt extrusion temperature is 155-165 ℃.

(3) And simultaneously introducing the upper non-woven fabric layer and the lower non-woven fabric layer into a pair of drafting rollers from two sides while extruding the middle waterproof layer, and hot-pressing and compounding the middle waterproof layer, the upper non-woven fabric layer and the lower non-woven fabric layer into a whole by roller extrusion at the hot-pressing temperature of 155-165 ℃ to obtain the waterproof roll.

Example 2

The embodiment 2 of the invention provides an environment-friendly polymer composite waterproof roll and a preparation method thereof, wherein the waterproof roll is formed by compounding an upper non-woven fabric layer, a middle waterproof layer and a lower non-woven fabric layer; the middle waterproof layer comprises the following components in parts by weight: 55 parts of linear low-density polyethylene resin, 18 parts of TPE (thermoplastic elastomer), 10 parts of porous silicon nitride loaded butyl stearate composite material, 12 parts of flame retardant, 2 parts of light shielding agent, 0.8 part of antioxidant, 1.2 parts of dispersing agent and 1.2 parts of adhesion promoter. Wherein, the upper non-woven fabric layer and the lower non-woven fabric layer are both PET polyester non-woven fabrics. The flame retardant is a compound of decabromodiphenylethane and antimony oxide, wherein the mass ratio of the decabromodiphenylethane to the antimony oxide in the compound is 1.3: 1.

the porous silicon nitride loaded butyl stearate composite material is prepared by the following method: soaking porous silicon nitride (strength of the porous silicon nitride is more than 150MPa and porosity is 53.4%) in butyl stearate liquid for 3h, performing solid-liquid separation, and drying the porous silicon nitride at 45 ℃ for 3 h. The loading amount of the impregnated butyl stearate is 37 percent, and the strength of the porous silicon nitride loaded butyl stearate composite material is more than 150 MPa.

The preparation method of the waterproof roll is the same as that of example 1.

Example 3

The embodiment 3 of the invention provides an environment-friendly polymer composite waterproof roll and a preparation method thereof, wherein the waterproof roll is formed by compounding an upper non-woven fabric layer, a middle waterproof layer and a lower non-woven fabric layer; the middle waterproof layer comprises the following components in parts by weight: 65 parts of linear low-density polyethylene resin, 15 parts of TPE (thermoplastic elastomer), 12 parts of porous silicon nitride loaded butyl stearate composite material, 15 parts of flame retardant, 1.5 parts of light shielding agent, 1 part of antioxidant, 1.5 parts of dispersing agent and 1.5 parts of adhesion promoter. Wherein, the upper non-woven fabric layer and the lower non-woven fabric layer are both PET polyester non-woven fabrics. The flame retardant is a compound of decabromodiphenylethane and antimony oxide, wherein the mass ratio of the decabromodiphenylethane to the antimony oxide in the compound is 1.5: 1.

the porous silicon nitride loaded butyl stearate composite material is prepared by the following method: soaking porous silicon nitride (strength of porous silicon nitride is greater than 150MPa and porosity is 54.5%) in butyl stearate liquid for 3h, separating solid from liquid, and drying porous silicon nitride at 50 deg.C for 3 h. The loading amount of the impregnated butyl stearate is 39%, and the strength of the porous silicon nitride loaded butyl stearate composite material is more than 150 MPa.

The preparation method of the waterproof roll is the same as that of example 1.

The protective scope of the present invention is not limited to the above-described embodiments, and it is apparent that various modifications and variations can be made to the present invention by those skilled in the art without departing from the scope and spirit of the present invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.