Product Description
Product Definition
QDPP integrated sewage treatment equipment is named after raw materials and is a device made of new polymer materials. Due to the fact that the equipment made of this material is made using integrated molding molds, they are all presented in the form of cans. A series of comprehensive sewage treatment equipment have been developed in response to the current situation and discharge standards of rural sewage in China.
Raw materials
The raw material uses high modulus polypropylene as the winding material, which is an ideal choice for plastic materials used in underground drainage and wastewater treatment. The elastic modulus of this material is ≥ 1500MPA, while the elastic modulus of HDPE is only 800MPA. The elastic modulus of the material plays a decisive role in the ring stiffness of the produced product. The higher the elastic modulus, the higher the ring stiffness of the product.
Polypropylene is a non-toxic, odorless, and tasteless milky white high crystalline polymer with a density of only 0.90-0.91g/cm3. It is one of the lighter varieties of plastics currently available. It is particularly stable to water, with a water absorption rate of only 0.01% and a molecular weight of about 80000-150000. It has good formability and a good surface gloss of the product.
Polypropylene has good chemical stability. In addition to being corroded by concentrated sulfuric acid and nitric acid, it is relatively stable to various other chemical reagents. However, low molecular weight aliphatic hydrocarbons, aromatic hydrocarbons, and chlorinated hydrocarbons can soften and swell polypropylene. At the same time, its chemical stability also improves with the increase of crystallinity. Therefore, polypropylene is suitable for making various chemical equipment and accessories, with good anti-corrosion effects.
It is non-toxic, odorless, has low density, and has better strength, stiffness, hardness, and heat resistance than low-pressure polyethylene. It can be used at around 100 ºC. It has good dielectric properties and high-frequency insulation, and is not affected by humidity. Common organic solvents such as acids and bases have little effect on it and can be used in tableware.
PPH is a high molecular weight, low melting rate homopolymer polypropylene that undergoes β The modification has a delicate crystalline structure, which gives it excellent chemical resistance, high temperature resistance, and good creep resistance, as well as excellent impact resistance at low temperatures.
Product performance
1. The safety tank body is made using spiral extrusion winding one-time molding technology, which is directly formed by the particle mother material through the mold to achieve the goal of forming the entire tank body without welds.
2. UV resistant and anti-aging additives are added to the durable raw materials, which improves the disadvantage of short outdoor service life of plastic equipment and greatly improves the service life.
3. The economic tank body can have a thickness of over 80mm, and the cross-section can be gradually changed. The thickness of the lower part of the tank body that is under greater stress can be correspondingly increased, and the raw materials can be used where needed.
4. Corrosion resistance has good corrosion resistance to various acids and bases, and can store the vast majority of organic, inorganic acids, bases, salt solvents, and some organic solvents.
5. Flexible and easy to install, lightweight, easy to install and maintain, non-toxic, non scaling, non polluting medium, easy to operate, customizable, and flexible overall installation.
Wide applicability
Widely applicable in industries such as sewage treatment, exhaust gas treatment, lithium battery new energy, chemical industry, metallurgy, electroplating, chemical fiber, printing and dyeing, environmental protection, petroleum, electronics, medicine and food, oil and fat, light industry, acid production, pickling, battery materials, etc.
Structural appearance
Equipment body color: Our company's main color is beige, and the color can be customized according to needs; Equipment structure: can be divided into solid wall structure/hollow structure;
Production process
QDPP integrated wastewater treatment adopts a one-time molding process with multiple times of application, and the wall thickness can reach 10-80mm. Multiple times refer to the process where the bottom of the body is fully expanded, the bottom material crystallizes, the internal material is fully released, and then the bottom surface is heated for the next expansion. The appropriate number of times varies depending on the thickness of the body.
welding technology
External welding production
Partial welding is a process that uses imported automatic extrusion welding machines to weld the most stressed part of the tank into a large weld seam in one go. The final welding with the outside of the tank is a process that uses imported automatic extrusion welding machines to weld the most stressed part of the tank into a large weld seam in one go. The new PPH particle material, which is the same as the tank body, is hot melted at the large weld seam and integrated with the tank bottom and body. A brand new PPH particle material with the same properties is hot melted at the large weld seam, integrated with the tank bottom and body.
Characteristics of bottom welding process:
1. High degree of mechanization and automation, stable product quality.
2. Weld specifications can be designed according to the stress characteristics of the product to fully utilize the integrity of the weld.
3. The product has good overall integrity, with welds integrated with the matrix, and good corrosion and leakage resistance.
4. Can reduce burrs and ensure smooth and beautiful seams.
5. Adding UV absorbers to PPH pellets prevents aging and prolongs service life.
Internal welding adopts the automatic long arm extrusion welding process, which is the most important step in all processes. The new PPH particle material with the same properties as the tank body is hot melted at the internal weld seam, integrated with the tank bottom and body. The principle is the same as external welding, but the equipment is different.
Eight major advantages
1,High elastic modulus and high ring stiffness.
2,Good stress cracking resistance.
3,Good chemical resistance Sexual and non corrosive.
4,Good balance ring stiffness and impact resistance.
5,Good wear resistance.
6,Good flexibility Sex and extensibility.
7,Longer service life.
8,Low density - lightweight, more efficient Easy to construct and install.
characteristic
High ring stiffness: The raw material is high modulus polypropylene, with an elastic modulus of up to 1850. The winding structure wall and inner wall are reasonably combined, and the structure is scientifically reasonable with good sealing performance and zero leakage. Adopting hot winding forming technology, the fusion seam quality is high, and the socket and socket are equipped with integrated welding joints. Electric fusion welding is used to form a closed plastic pipeline system, preventing any harmful substances from entering the soil and causing pollution. We not only focus on cleanliness on the ground, but also on environmental protection underground.
performance parameter
| Performance Table of Polypropylene (PPH) |
| project |
Typical value |
Unit |
test method |
| density |
905 |
k/m³ |
ISO 1183 |
| Melt flow rate (230C/2.16kg) |
0.3 |
g/10min |
ISO 1133 |
| Melt flow rate (190C/5.0kg) |
0.6 |
g/10min |
ISO 1133 |
| Yield stress (50mm/min) |
36 |
MPa |
ISO 527-2 |
| Yield deformation (50mm/min) |
10 |
‰ |
ISO 527-2 |
| Tensile modulus (1mm/min) |
1650 |
MPa |
ISO 527-2 |
| Charpy impact strength, slotted (+23 ºC) |
7 |
KJ/m² |
ISO 179/1eA |
| Slotting (-20 ºC) |
2 |
KJ/m² |
ISO 179/1eA |
| Vicat softening temperature B (5ON) |
95 |
ºC |
ISO 306 |
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