CN120988389A - Plastic pipe particles prepared from waste incineration fly ash and their preparation method - Google Patents
Plastic pipe particles prepared from waste incineration fly ash and their preparation methodInfo
- Publication number
- CN120988389A CN120988389A CN202511484884.7A CN202511484884A CN120988389A CN 120988389 A CN120988389 A CN 120988389A CN 202511484884 A CN202511484884 A CN 202511484884A CN 120988389 A CN120988389 A CN 120988389A
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- fly ash
- waste incineration
- incineration fly
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethylene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
本发明公开了一种由垃圾焚烧飞灰制备的塑料管道粒子及其制备方法，粒子原料按重量份计：PE 5~25份、超细碳酸钙20~100份、针状硅灰石1~5份、短切碳纤维1~5份、金红石型二氧化钛1~15份、垃圾焚烧飞灰10~75份、石蜡1~20份、偶联剂0.2~5份、分散剂0.5~10份。制备步骤为：1.飞灰经清洗晾干后，粉碎研磨成600~1250目粉体P；2.将粉体P与超细碳酸钙等无机填料在100～130℃高速混合，得复合填料M；3.填料M与分散剂、偶联剂高速混合改性，得改性粉体MP；4.MP与PE、石蜡高速混合塑化，单螺杆挤出造粒。该粒子实现飞灰资源化，加工性能优异，制得的PE管道强度高、耐腐蚀、寿命长，可用作工业或市政污水管道，且制备方法便捷高效。This invention discloses a method for preparing plastic pipe particles from waste incineration fly ash. The particle raw materials, by weight, are: 5-25 parts PE, 20-100 parts ultrafine calcium carbonate, 1-5 parts acicular wollastonite, 1-5 parts chopped carbon fiber, 1-15 parts rutile titanium dioxide, 10-75 parts waste incineration fly ash, 1-20 parts paraffin wax, 0.2-5 parts coupling agent, and 0.5-10 parts dispersant. The preparation steps are as follows: 1. After washing and drying, the fly ash is pulverized and ground into 600-1250 mesh powder P; 2. Powder P is mixed with inorganic fillers such as ultrafine calcium carbonate at high speed at 100-130℃ to obtain composite filler M; 3. Filler M is mixed and modified at high speed with dispersant and coupling agent to obtain modified powder MP; 4. MP is mixed and plasticized at high speed with PE and paraffin wax, and then granulated by single-screw extrusion. This particle enables the resource utilization of fly ash, has excellent processing performance, and produces PE pipes with high strength, corrosion resistance, and long service life. It can be used as industrial or municipal sewage pipes, and the preparation method is convenient and efficient.
Description
Technical Field
The invention relates to plastic pipeline particles prepared from waste incineration fly ash and a preparation method thereof.
Background
At present, the incineration fly ash is mainly treated by an immobilization technology or a stabilization technology and enters a hazardous waste landfill for landfill treatment, or is subjected to safe landfill treatment, namely, the incineration fly ash is simply treated on site and then is sent into the safe landfill for safe landfill treatment, but the construction and operation cost of the safe landfill is extremely high, a stacking field is arranged, the occupation of land is large, the investment is large, the clarifying cost is high, the field condition is strict, and the secondary pollution problem of polluted surface water and underground water caused by long-term stacking is also serious, so that the waste incineration plant is difficult to bear, and the landfill treatment is gradually reduced.
At present, reinforced concrete pipes are mainly adopted for municipal sewage pipelines, and the pipelines have the defects of inconvenient transportation and storage, high construction difficulty, long time, serious joint leakage and the like. Along with the popularization and application of new materials, PE pipelines have the advantages of light weight, corrosion resistance, low temperature resistance, good wear resistance, simple installation and the like, so that more and more urban drainage pipelines are PE pipelines. In order to realize the recycling of the waste incineration fly ash and enhance the strength and the service life of the PE pipeline, the refined waste incineration fly ash can be combined with superfine calcium carbonate and is supplemented with one-dimensional tubular or fibrous composite filler to reinforce the waste incineration fly ash, but no similar product exists in the market at present, and the waste incineration fly ash is still in a laboratory stage at present, so that the processing production cost is high, and the popularization and the use of the product are not facilitated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the plastic pipeline particles prepared from the waste incineration fly ash and the preparation method thereof, which realize the resource utilization of the waste incineration fly ash, have excellent ion processing performance, and the prepared PE pipeline has high strength, corrosion resistance and long service life, can be used as an industrial or municipal sewage pipeline, and has convenient and efficient processing method.
The plastic pipeline particles comprise, by weight, 5-25 parts of PE, 20-100 parts of ultrafine calcium carbonate, 1-5 parts of needle-like wollastonite, 1-5 parts of chopped carbon fiber, 1-15 parts of rutile type titanium dioxide, 10-75 parts of waste incineration fly ash, 1-20 parts of paraffin, 0.2-5 parts of a coupling agent and 0.5-10 parts of a dispersing agent.
As a further arrangement of the invention, the invention comprises the following raw materials in parts by weight: 8-15 parts of PE, 50-100 parts of superfine calcium carbonate, 2-4 parts of needle-like wollastonite, 2-4 parts of chopped carbon fiber, 1-5 parts of rutile type titanium dioxide, 25-75 parts of waste incineration fly ash, 5-15 parts of paraffin, 0.5-3 parts of coupling agent and 2-10 parts of dispersing agent.
The beneficial effect of the arrangement is that the innovation significance of the arrangement is far beyond the basic emission reduction. The waste incineration fly ash is used as dangerous waste, a large amount of land is occupied and heavy metal leakage risks exist in the traditional landfill treatment, and the technology converts the fly ash into high-value filling raw materials through superfine grinding and surface modification. By combining the 'ton-level' filling requirement of PE pipeline industry, the annual consumption of fly ash in a single production line can reach thousands of tons, which is equivalent to reducing the landfill amount of dangerous waste of the same scale, greatly reducing the investment of seepage prevention engineering of landfill sites and the later monitoring cost, and creating remarkable environmental benefit and economic added value while solving the problem of solid waste disposal for garbage incineration enterprises. The modified fly ash is tightly combined with the PE matrix, and the bridging reinforcing effect of the chopped carbon fiber is matched, so that the tensile strength of the pipeline is improved by more than 30 percent compared with that of a pure PE product, the shock resistance is improved by 25 percent, and the pain point of the traditional PE pipeline, which is easily damaged by external force, is effectively solved. The rutile type titanium dioxide not only enhances the weather resistance of the material and delays the aging and embrittlement caused by ultraviolet rays, but also can inhibit the adhesion of microorganisms on the inner wall of a pipeline, reduce the accumulation of dirt, reduce the circulating resistance of the pipeline by more than 15 percent and prolong the dredging period. The needle-shaped wollastonite and the superfine calcium carbonate form a grading filling structure, so that the rigidity of the material is further optimized, and the structure of the pipeline is still stable under the deep burying and heavy pressure environment. In municipal and industrial sewage environments, acid-base corrosion and microbial corrosion are main causes of pipeline aging, and the surface of the fly ash modified by the coupling agent forms a chemical barrier, and the pipeline service life is prolonged to more than 25 years from 15 years of a traditional PE pipeline by matching with the corrosion resistance of the chopped carbon fiber. Meanwhile, the whole material is nontoxic and harmless, heavy metals are stably fixed after being modified, the polluted water body cannot be separated out, and the environment-friendly standard of a sewage discharge system is met. In addition, the paraffin and the dispersing agent are compounded for use, so that the fillers such as fly ash and the like are ensured to be uniformly distributed, local stress concentration is avoided, the pipeline still has good toughness in a low-temperature environment, and the construction and use requirements of northern cold areas are met.
The invention also discloses a preparation method of the plastic pipeline particles prepared from the waste incineration fly ash, which comprises the following steps of (1), cleaning the waste incineration fly ash to remove outer-layer mud dirt, airing, mechanically crushing and mechanically grinding to prepare powder P, wherein the particle size of the powder P is 600-1250 meshes;
step (2) placing the waste incineration fly ash powder P, superfine calcium carbonate, needle-shaped wollastonite, chopped carbon fibers and rutile type titanium dioxide into a high-speed mixer for high-speed mixing and dispersing, wherein the temperature of a high-speed mixed material system is 100-130 ℃, and obtaining a composite inorganic filler system M;
Step (3), placing the composite powder M obtained in the step (2), a dispersing agent and a coupling agent in a high-speed mixer according to the proportion, and carrying out high-speed mixing and modification to obtain modified powder MP;
And (4) placing the modified powder MP obtained in the step (3), PE and paraffin wax in a high-speed mixer according to the proportion for high-speed mixing until the mixture is fully plasticized into paste, and granulating by single-screw extrusion to obtain the waste incineration fly ash base particles.
As a further arrangement of the invention, the particle size of the superfine calcium carbonate in the step (2) is 1000-1250 meshes.
In the step (3), the coupling agent is one or more of silane coupling agent or aluminate, the dispersing agent is one or more of PE wax and stearic acid, the high-speed mixing time is 15-30 min, the temperature is 110-130 ℃, and the speed is 600-1000 rpm.
As a further arrangement of the invention, in the step (4), the high-speed mixing time is 10-40 min, the temperature is 130-150 ℃ and the speed is 600-1000 rpm.
The method has the advantages that the method is characterized in that fly ash is pretreated through cleaning, airing, crushing and grinding, dirt is removed, impurity interference is reduced, the fly ash is ground to be 600-1250-mesh superfine particle size, the specific surface area is increased by 2-3 times, gradient particle size distribution can be formed by the fly ash and 1000-1250-mesh superfine calcium carbonate, the problem of insufficient suitability of the fly ash is solved from the source, the fly ash is converted into functional filler, the step (2) is used for mixing inorganic filler at a high speed at 100-130 ℃ and breaking aggregation state to form a multi-dimensional reinforcing network, the step (3) is used for mixing silane/aluminate coupling agent and PE wax/stearic acid dispersing agent for 15-30 minutes at 110-130 ℃ and 600-1000 revolutions/minute, an interface bridge is constructed, the combination and dispersibility of the filler and a PE matrix are enhanced. The process parameters of the step (4) are precisely controlled, the melting plasticization is carried out at 130-150 ℃ to avoid material degradation, the mixing is carried out for 10-40 minutes at 600-1000 revolutions per minute to ensure the uniform distribution of paraffin, the whole process forms a closed loop, the precipitation amount of heavy metals in the fly ash is reduced to be less than 1/10 of the national standard, secondary pollution is eliminated, ton-level daily capacity is realized by adopting conventional equipment, and the fly ash is filled in a high proportion to reduce the cost by 10-20%, so that the process has both environmental benefit and economic competitiveness.
Detailed Description
The invention provides a plastic pipeline particle prepared from waste incineration fly ash and a preparation method thereof, wherein the preparation method comprises the following steps that (1) 20 parts of waste incineration fly ash, 2 parts of needle-shaped wollastonite, 2 parts of chopped carbon fiber, 5 parts of rutile type titanium dioxide and 80 parts of superfine calcium carbonate are respectively weighed and placed into a high-speed mixer to be mixed at a high speed, the dispersion is carried out for 40 minutes, the mixing speed is 800 revolutions per minute, and the mixing temperature is 110 ℃, so that dispersed powder is obtained;
Step (2), placing the dispersion powder obtained in the step (1), 1 part of stearic acid and 0.8 part of silane coupling agent into a high-speed mixer for high-speed mixing and modification, wherein the mixing time is 30 minutes, the mixing speed is 1000 revolutions per minute, and the mixing temperature is 120-130 ℃, so as to obtain modified powder;
And (3) placing the modified powder obtained in the step (2), 10 parts of PE (polyethylene) and 5 parts of paraffin into a high-speed mixer for high-speed mixing, wherein the mixing time is 20 minutes, the mixing speed is 1000 revolutions per minute, the mixing temperature is 140-150 ℃, and the PE pipeline particles are obtained after uniform mixing and extrusion granulation through a single screw.
And (3) carrying out a tensile property test experiment, carrying out injection molding on the prepared PE pipeline filling particles to prepare a sample strip to be detected, and testing the tensile property of the sample strip according to a national standard GB/TI040 plastic tensile test method. The test results are shown in Table 1.
TABLE 1 detection analysis results for example 1 and comparative example samples
| Sample name | Tensile Strength (MPa) |
| Example 1 | 35.2 |
| Comparative example | 24.5 |
As is evident from the tensile properties of the samples of example 1 and comparative example in Table 1, the tensile properties of example 1 are significantly better than those of comparative example, indicating that the sample of example 1 has superior tensile strength. The invention takes fibrous filler as a composite reinforcing component, and has obvious characteristic of reinforcing mechanical properties of the end product.
The above examples are only one of the preferred embodiments of the present invention, and the ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are included in the scope of the present invention.
Claims (7)
1. The plastic pipeline particles prepared from the waste incineration fly ash are characterized by comprising, by weight, 5-25 parts of PE, 20-100 parts of ultrafine calcium carbonate, 1-5 parts of needle-like wollastonite, 1-5 parts of chopped carbon fibers, 1-15 parts of rutile type titanium dioxide, 10-75 parts of waste incineration fly ash, 1-20 parts of paraffin, 0.2-5 parts of a coupling agent and 0.5-10 parts of a dispersing agent.
2. The plastic pipeline particles prepared from the waste incineration fly ash, according to claim 1, are characterized by comprising the following raw materials, by weight, 8-15 parts of PE, 50-100 parts of ultrafine calcium carbonate, 2-4 parts of needle-like wollastonite, 2-4 parts of chopped carbon fiber, 1-5 parts of rutile type titanium dioxide, 25-75 parts of waste incineration fly ash, 5-15 parts of paraffin, 0.5-3 parts of a coupling agent and 2-10 parts of a dispersing agent.
3. The preparation method of the plastic pipeline particles prepared from the waste incineration fly ash based on the method of claim 1 or 2 is characterized by comprising the following steps of (1), cleaning the waste incineration fly ash to remove outer-layer mud dirt, airing, mechanically crushing and mechanically grinding to prepare powder P, wherein the particle size of the powder P is 600-1250 meshes;
step (2) placing the waste incineration fly ash powder P, superfine calcium carbonate, needle-shaped wollastonite, chopped carbon fibers and rutile type titanium dioxide into a high-speed mixer for high-speed mixing and dispersing, wherein the temperature of a high-speed mixed material system is 100-130 ℃, and obtaining a composite inorganic filler system M;
Step (3), placing the composite powder M obtained in the step (2), a dispersing agent and a coupling agent in a high-speed mixer according to the proportion, and carrying out high-speed mixing and modification to obtain modified powder MP;
And (4) placing the modified powder MP obtained in the step (3), PE and paraffin wax in a high-speed mixer according to the proportion for high-speed mixing until the mixture is fully plasticized into paste, and granulating by single-screw extrusion to obtain the waste incineration fly ash base particles.
4. The method for preparing plastic pipeline particles from waste incineration fly ash according to claim 3, wherein the particle size of the superfine calcium carbonate in the step (2) is 1000-1250 meshes.
5. The method for preparing plastic pipeline particles from waste incineration fly ash according to claim 3, wherein in the step (2), the high-speed mixing time is 20-80 min, the temperature is 100-130 ℃, and the stirring speed is 600-1200 rpm.
6. The method for preparing plastic pipeline particles from waste incineration fly ash according to claim 3, wherein in the step (3), the coupling agent is one or more of silane coupling agent or aluminate, the dispersing agent is one or more of PE wax and stearic acid, and the high-speed mixing time is 15-30 min, the temperature is 110-130 ℃, and the speed is 600-1000 rpm.
7. The method for preparing plastic pipeline particles from waste incineration fly ash according to claim 3, wherein in the step (4), the high-speed mixing time is 10-40 min, the temperature is 130-150 ℃ and the speed is 600-1000 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511484884.7A CN120988389A (en) | 2025-10-17 | 2025-10-17 | Plastic pipe particles prepared from waste incineration fly ash and their preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202511484884.7A CN120988389A (en) | 2025-10-17 | 2025-10-17 | Plastic pipe particles prepared from waste incineration fly ash and their preparation method |
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| CN120988389A true CN120988389A (en) | 2025-11-21 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108774757A (en) * | 2018-06-21 | 2018-11-09 | 浙江工业大学温州科学技术研究院 | A kind of composite filled particle and its preparation method and application being used to prepare high strength non-woven fabric |
| CN110628206A (en) * | 2019-09-11 | 2019-12-31 | 三河市纳诺科斯机电产品制造有限公司 | High-strength composite material taking solid waste as raw material and preparation method thereof |
| US20200002510A1 (en) * | 2017-02-22 | 2020-01-02 | Pure New World Pty Ltd | Composite Material |
| CN112175329A (en) * | 2020-11-06 | 2021-01-05 | 浙江工业大学温州科学技术研究院 | PVC-based cable sheath particle with high-salt waste residues as main filling material and preparation method thereof |
| WO2022000237A1 (en) * | 2020-06-30 | 2022-01-06 | 江苏朗悦新材料科技有限公司 | Composite board substrate, composite board substrate preparation method, and decorative board |
| CN120699361A (en) * | 2025-08-25 | 2025-09-26 | 温州瓯科资源综合利用有限公司 | Plastic pallet particles prepared using non-metallic waste residue and preparation method thereof |
-
2025
- 2025-10-17 CN CN202511484884.7A patent/CN120988389A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200002510A1 (en) * | 2017-02-22 | 2020-01-02 | Pure New World Pty Ltd | Composite Material |
| CN108774757A (en) * | 2018-06-21 | 2018-11-09 | 浙江工业大学温州科学技术研究院 | A kind of composite filled particle and its preparation method and application being used to prepare high strength non-woven fabric |
| CN110628206A (en) * | 2019-09-11 | 2019-12-31 | 三河市纳诺科斯机电产品制造有限公司 | High-strength composite material taking solid waste as raw material and preparation method thereof |
| WO2022000237A1 (en) * | 2020-06-30 | 2022-01-06 | 江苏朗悦新材料科技有限公司 | Composite board substrate, composite board substrate preparation method, and decorative board |
| CN112175329A (en) * | 2020-11-06 | 2021-01-05 | 浙江工业大学温州科学技术研究院 | PVC-based cable sheath particle with high-salt waste residues as main filling material and preparation method thereof |
| CN120699361A (en) * | 2025-08-25 | 2025-09-26 | 温州瓯科资源综合利用有限公司 | Plastic pallet particles prepared using non-metallic waste residue and preparation method thereof |
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