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Phosphogypsum composite HDPE corrugated pipe and manufacturing process thereof

A phosphogypsum and corrugated pipe technology is applied in the field of phosphogypsum composite HDPE corrugated pipe and its manufacturing process, which can solve the problems of occupying large land, only storage, and restricting the sustainable development of phosphorus chemical industry, so as to reduce pollution and improve utilization. Value, strong antioxidant effect

Pending Publication Date: 2020-09-18
贵州利东环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, the annual discharge and accumulation of phosphogypsum has restricted the sustainable development of phosphorus chemical industry
At present, the phosphogypsum solid waste residue of most phosphate fertilizer production enterprises in my country can only be piled up, which not only occupies a large amount of land, but also needs to invest a lot of money in the anti-seepage treatment of the piled up phosphogypsum, which brings economic burden to the development of enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A phosphogypsum composite HDPE bellows, comprising the following components by weight:

[0028] Phosphogypsum filler 10-50%, HDPE polyethylene plastic raw material 50%-90%, polyethylene wax 1-5%, coupling agent 0.5-1.5%, stearic acid 0.5-1.5%, paraffin wax 0.5-5%, Antioxidant 0.2-1%, anti-ultraviolet additive 0.1-1%, color masterbatch 0.2-2%.

[0029] A further ratio is:

[0030] Phosphogypsum filler 15-40%, HDPE polyethylene plastic raw material 60% to 80%, polyethylene wax 2-4%, phosphorus coupling agent 0.7-1.2%, paraffin wax 1.5-4.5%, stearic acid 0.5-1.5% , Antioxidant 0.4-1%, anti-ultraviolet additive 0.2-1%, color masterbatch 0.5-1.6%.

[0031] The phosphogypsum filler is phosphogypsum powder or phosphogypsum composite particles.

[0032] The mesh number of the phosphogypsum powder is 200-2000 mesh.

[0033] The coupling agent is silane or titanate.

[0034] The antioxidant is one of phosphorus antioxidants, phenolic antioxidants, and sulfur antioxidants.

Embodiment 2

[0036] A manufacturing process of phosphogypsum composite HDPE bellows, comprising the following steps:

[0037] Step 1, calcining the phosphogypsum powder to 300°C to 600°C, then adding a coupling agent, putting it into a high-speed mixer for mixing, and then heating to 85°C to 110°C for activation treatment;

[0038] Step 2: adding HDPE polyethylene plastic raw materials, paraffin wax, polyethylene wax, stearic acid, antioxidant, anti-ultraviolet additive, and color masterbatch to the product obtained after the activation treatment in step 1, and mixing in a low-speed mixer, Then put it into a conical twin-screw extruder, and extrude to obtain a phosphogypsum composite HDPE corrugated pipe.

[0039] In step one, the temperature for calcining the phosphogypsum raw material is 400°C.

[0040] In step 1, the mesh number of the phosphogypsum powder ground by the grinding machine is 200-2000 mesh.

[0041] Phosphogypsum filled plastic modified particles are used in plastic fill...

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PUM

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Abstract

The invention discloses a phosphogypsum composite HDPE corrugated pipe. The pipe comprises the following components in percentage by weight: 10-50% of a phosphogypsum filler, 50-90% of a HDPE polyethylene plastic raw material, 1-5% of polyethylene wax, 0.5-1.5% of a coupling agent, 0.5-1.5% of stearic acid, 0.5-5% of paraffin, 0.2-1% of an antioxidant, 0.1-1% of an anti-ultraviolet additive and 0.2-2% of color master batch. The manufacturing process of the phosphogypsum composite HDPE corrugated pipe comprises the following steps: calcining phosphogypsum powder to 300-600 DEG C; adding a coupling agent, putting the mixture into a high-speed mixer for an activating treatment, adding an HDPE polyethylene plastic raw material, paraffin, polyethylene wax, an antioxidant, an anti-ultraviolet additive and color master batch into a product obtained in the activating treatment, mixing in a low-speed mixer, and then putting the mixture into a conical double-screw extruder for extruding to obtain the phosphogypsum composite HDPE corrugated pipe. The utilization value of phosphogypsum is increased, waste is turned into wealth, environmental pollution can be reduced, and the manufactured HDPEcorrugated pipe is good in quality and high in oxidation resistance.

Description

technical field [0001] The invention relates to the technical field of modified plastics, in particular to a phosphogypsum composite HDPE bellows and a manufacturing process thereof. Background technique [0002] The existing HDPE double-wall corrugated pipes for drainage use HDPE polyethylene plastic raw materials and add inorganic calcium carbonate or talcum powder to increase the ring stiffness. Since the calcium carbonate particles are spherical, the rigidity of the ring filled with calcium carbonate powder is not easy to meet the requirements. Talc powder particles are in the form of flakes, filling with talc powder can meet the ring stiffness requirements, but the product is easily brittle. Moreover, the use of calcium carbonate and talcum powder as plastic filling modified powders will occupy mineral resources, and the mining process will also cause environmental pollution. [0003] my country is a country rich in phosphogypsum resources, and phosphogypsum has becom...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L91/06C08K3/30C08K5/09C08K9/06C08K9/04C08K13/06
CPCC08L23/06C08K2003/3045C08L2205/03C08L2205/025C08L2201/08C08L2203/18C08L2207/062C08L91/06C08K3/30C08K5/09C08K9/06C08K9/04C08K13/06
Inventor 杨雪松
Owner 贵州利东环保科技有限公司