Fiber ash modified PE geomembrane material and preparation method thereof

Abstract

The invention is suitable for the technical field of PE geomembranes, and provides a fiber ash modified PE geomembrane material and a preparation method thereof, the fiber ash modified PE geomembrane material comprises the following components by weight: 14-22 parts of fiber ash, 36-55 parts of PE, 4-6 parts of a chain extender, 2-4 parts of a compatilizer, 1-4 parts of composite titanium dioxide, 2-6 parts of nano silica, 1.5-6.5 parts of glass fiber, 3.5-5.5 parts of an inorganic filler, 2.2-3.7 parts of p-toluenesulfonic acid, and 1.3-2.1 parts of a coupling agent. The preparation method comprises the following steps: S1, pouring the components into a high-speed mixer according to the proportion, and mixing for 15-30 minutes at a high speed; s2, melting the mixed raw materials, and performing extrusion molding to obtain the modified PE geomembrane. The fiber ash, the PE, the chain extender, the compatilizer, the composite titanium dioxide, the nano silicon dioxide, the glass fiber, the inorganic filler, the p-toluenesulfonic acid and the coupling agent are mixed at a high speed in proportion, and the obtained material is subjected to smelting and extrusion molding, so that the prepared material is excellent in performance and can meet the use requirements of most use environments.

Description

Technical Field

[0001] The invention relates to the technical field of PE geomembranes, in particular to a fiber ash modified PE geomembrane material and a preparation method thereof. Background Art

[0002] PE geomembrane is a material widely used in anti-seepage projects. It is favored for its excellent anti-seepage performance and good physical and chemical stability. The application range of PE geomembrane is very wide. For example, in anti-seepage projects such as reservoirs, canals, artificial lakes, and landfills, PE geomembrane can effectively prevent the leakage of groundwater and harmful liquids, and protect groundwater resources and the ecological environment. In addition, PE geomembrane is also widely used in the construction of infrastructure such as roads, railways, tunnels, and subways, playing the role of anti-seepage, drainage, and roadbed protection.

[0003] Due to the special use environment of PE geomembrane, it has high requirements for durability, toughness, anti-seepage and other properties. The existing PE geomembrane still has certain shortcomings in performance during actual use, and it is still necessary to explore and develop PE geomembrane materials with better performance. In this regard, the present application proposes a fiber ash modified PE geomembrane material and a preparation method. Summary of the invention

[0004] The object of the present invention is to provide a fiber ash modified PE geomembrane material and a preparation method thereof, so as to solve the problems in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: In a first aspect, the present invention provides a fiber ash modified PE geomembrane material, the components and weight proportions of which are as follows:

[0006] 14-22 parts of fiber ash, 36-55 parts of PE, 4-6 parts of chain extender, 2-4 parts of compatibilizer, 1-4 parts of composite titanium dioxide, 2-6 parts of nano-silicon dioxide, 1.5-6.5 parts of glass fiber, 3.5-5.5 parts of inorganic filler, 2.2-3.7 parts of p-toluenesulfonic acid, and 1.3-2.1 parts of coupling agent.

[0007] Preferably, the chain extender is one or more of maleic anhydride, glyceryl methacrylate or dibutyl maleate.

[0008] Preferably, the compatibilizer is one or more of polyethylene-butadiene or hydrogenated polyethylene-isoprene.

[0009] Preferably, the inorganic filler is one or more of talc, gypsum whisker or heavy calcium.

[0010] Preferably, the coupling agent is a silane coupling agent or a titanate coupling agent.

[0011] The second aspect of the present invention provides a method for preparing the PE geomembrane material according to the first aspect of the present invention, comprising the following steps:

[0012] S1, pour the components into a high-speed mixer according to the proportion, and mix at high speed for 15min to 30min;

[0013] S2, melting the mixed raw materials, extruding and molding, and preparing a modified PE geomembrane.

[0014] The present invention has at least the following beneficial effects:

[0015] The present invention provides a fiber ash modified PE geomembrane material and a preparation method thereof. Fiber ash, PE, a chain extender, a compatibilizer, composite titanium dioxide, nano-silicon dioxide, glass fiber, an inorganic filler, p-toluenesulfonic acid, and a coupling agent are mixed in proportion and at a high speed, and then smelted and extruded to obtain a modified PE geomembrane material having superior performance and being able to meet the use requirements of most use environments. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Example 1

[0018] A fiber ash modified PE geomembrane material and preparation method, the components and weight parts are as follows:

[0019] 14 parts of fiber ash, 36 parts of PE, 4 parts of chain extender, 2 parts of compatibilizer, 1 part of composite titanium dioxide, 2 parts of nano-silicon dioxide, 1.5 parts of glass fiber, 3.5 parts of inorganic filler, 2.2 parts of p-toluenesulfonic acid, and 1.3 parts of coupling agent.

[0020] The chain extender is maleic anhydride; the compatibilizer is polyethylene-butadiene; the inorganic filler is talcum powder; and the coupling agent is a silane coupling agent.

[0021] The preparation method of the above PE geomembrane material comprises the following steps:

[0022] S1, pour all components into a high-speed mixer according to proportion, and mix at high speed for 15 minutes;

[0023] S2, melting the mixed raw materials, extruding and molding at an extrusion temperature of 160° C., and obtaining a modified PE geomembrane.

[0024] Example 2

[0025] A fiber ash modified PE geomembrane material and preparation method, the components and weight parts are as follows:

[0026] 18 parts of fiber ash, 41 parts of PE, 5 parts of chain extender, 3 parts of compatibilizer, 2 parts of composite titanium dioxide, 3 parts of nano-silicon dioxide, 3.5 parts of glass fiber, 4 parts of inorganic filler, 3 parts of p-toluenesulfonic acid, and 1.8 parts of coupling agent.

[0027] The chain extender is glyceryl methacrylate; the compatibilizer is hydrogenated polyethylene-isoprene; the inorganic filler is gypsum whisker; and the coupling agent is titanate coupling agent.

[0028] The preparation method of the above PE geomembrane material comprises the following steps:

[0029] S1, pour all components into a high-speed mixer according to proportion, and mix at high speed for 20 minutes;

[0030] S2, melting the mixed raw materials, extruding and molding at an extrusion temperature of 165° C., and obtaining a modified PE geomembrane.

[0031] Example 3

[0032] A fiber ash modified PE geomembrane material and preparation method, the components and weight parts are as follows:

[0033] 22 parts of fiber ash, 55 parts of PE, 6 parts of chain extender, 4 parts of compatibilizer, 4 parts of composite titanium dioxide, 6 parts of nano-silicon dioxide, 6.5 parts of glass fiber, 5.5 parts of inorganic filler, 3.7 parts of p-toluenesulfonic acid, and 2.1 parts of coupling agent.

[0034] The chain extender is dibutyl maleate; the compatibilizer is polyethylene-butadiene; the inorganic filler is heavy calcium; and the coupling agent is a silane coupling agent.

[0035] The preparation method of the above PE geomembrane material comprises the following steps:

[0036] S1, pour all components into a high-speed mixer according to proportion, and mix at high speed for 30 minutes;

[0037] S2, melting the mixed raw materials, extruding and molding at an extrusion temperature of 170° C., and obtaining a modified PE geomembrane.

[0038] A series of relevant performance tests were carried out on the products prepared in the above examples, and the results are shown in the following table:

[0039] Test items Test results Tensile yield strength ≥40N / mm Tensile strength at break ≥50N / mm Elongation at break ≥600％ Frost resistance ≤-70℃ Impermeability No water leakage for 96 hours under 1.05MPa water pressure

[0040] In summary, the modified PE geomembrane material prepared by the present invention has superior performance, high tolerance, good anti-seepage performance, and can meet the needs of most use environments.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fiber ash modified PE geomembrane material, characterized in that: The components and weight parts are as follows: 14-22 parts of fiber ash, 36-55 parts of PE, 4-6 parts of chain extender, 2-4 parts of compatibilizer, 1-4 parts of composite titanium dioxide, 2-6 parts of nano-silicon dioxide, 1.5-6.5 parts of glass fiber, 3.5-5.5 parts of inorganic filler, 2.2-3.7 parts of p-toluenesulfonic acid, and 1.3-2.1 parts of coupling agent.

2. A fiber ash modified PE geomembrane material according to claim 1, characterized in that: The chain extender is one or more of maleic anhydride, glyceryl methacrylate or dibutyl maleate.

3. The fiber ash modified PE geomembrane material according to claim 1, characterized in that: The compatibilizer is one or more of polyethylene-butadiene or hydrogenated polyethylene-isoprene.

4. The fiber ash modified PE geomembrane material according to claim 1, characterized in that: The inorganic filler is one or more of talc, gypsum whisker or heavy calcium.

5. The fiber ash modified PE geomembrane material according to claim 1, characterized in that: The coupling agent is a silane coupling agent or a titanate coupling agent.

6. The method for preparing a fiber ash modified PE geomembrane material according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, pour the components into a high-speed mixer according to the proportion, and mix at high speed for 15min to 30min; S2, melting the mixed raw materials, extruding and molding, and preparing a modified PE geomembrane.