Chengdu Xinkunda Plastic Products Co., Ltd.
Chengdu Xinkunda Plastic Products Co., Ltd.
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| Attribute | Value |
|---|---|
| Density | 0.9 g/cm3 |
| Color | White/gray/beige/cyan/blue |
| Thickness | 3-30mm |
| Size | Customized |
| High Temperature Resistance | Up to 120°C |
| Weather Resistance | Good |
| Electrical Insulation | High |
| UV Resistance | Good |
| Surface Finish | Smooth |
| Service Life | Up to 10 years |
PP sheets occupy an important position in many fields due to their excellent cost-effectiveness and wide applicability. In terms of cost-effectiveness, the raw material of PP sheets, polypropylene, has a stable price and is lower than that of engineering plastics such as ABS and PVC. The mature production process and low energy consumption give it a significant cost advantage. Taking common 3-5mm thick sheets as an example, the unit price per square meter is about 15-40 RMB, which is much lower than that of stainless steel plates, FRP plates and other materials. At the same time, the service life of PP sheets can reach 5-10 years. Its characteristics such as corrosion resistance and waterproofness make it almost need no additional maintenance, resulting in low long-term use cost. In terms of performance, it can meet the basic needs of most scenarios, avoiding paying extra costs for excess functions, and achieving a precise match between cost and function.
In terms of applications, PP sheets have a very wide range of application scenarios. In the chemical industry, they can be used to make pickling tanks, electroplating tanks, wastewater treatment pools, etc. By virtue of their waterproof and corrosion-resistant properties, they can prevent acid and alkali liquids from leaking. They can also be used as linings for pipelines and storage tanks to extend the service life of equipment. In construction and municipal engineering, as waterproof layers for basements and roofs, they can replace traditional coiled materials to reduce the risk of water leakage. They can also be used as anti-seepage layers for rainwater collection pools and artificial lakes, and are lightweight and easy to construct. In agriculture and aquaculture, as waterproof liners for reservoirs and irrigation channels, they can prevent water loss. When used in fish and shrimp breeding ponds, they can avoid water leakage and pollution of water quality by soil. In household and industrial facilities, they can be used as waterproof baffles in bathrooms and kitchens, and also as liners in cold storage to withstand low temperatures. In addition, they can reduce the spread of equipment operation noise in the industrial field and help optimize the acoustic environment in transportation tools, fully demonstrating their diversified application value.
| Characteristic | PP (Polypropylene) | PE (Polyethylene) | PVC (Polyvinyl Chloride) |
|---|---|---|---|
| Density (g/cm³) | 0.89-0.91 | 0.91-0.96 (Higher for HDPE, lower for LDPE) | 1.3-1.45 |
| Appearance | Translucent to opaque, relatively hard surface | Translucent to milky white, soft surface with waxy feel | Transparent to opaque, diverse colors (pigment-addable) |
| Hardness | Medium-high, good rigidity | Low (LDPE) to medium (HDPE), good flexibility | Medium-high (rigid PVC); flexibility of soft PVC is adjustable |
| Impact Resistance | Good at room temperature, brittle at low temperatures | Excellent, especially tough at low temperatures (LDPE better) | Poor for rigid PVC at low temperatures; soft PVC has improved toughness due to plasticizers |
| Tensile Strength (MPa) | 20-40 | 8-30 (Lower for LDPE, higher for HDPE) | 30-50 (rigid PVC), lower for soft PVC |
| Continuous Service Temperature (℃) | 110-120 | -40-80 (About 60 for LDPE, about 100 for HDPE) | -15-60 (rigid PVC), lower for soft PVC (affected by plasticizers) |
| Low-Temperature Resistance | Poor, brittle below 0℃ | Excellent, can withstand below -70℃ (HDPE slightly less cold-resistant) | Poor, easy to harden and crack at low temperatures |
| Vicat Softening Point (℃) | 150 | 105-130 (Higher for HDPE) | 75-90 (rigid PVC) |
| Acid and Alkali Resistance | Excellent, resistant to most acids, alkalis, salts; not resistant to aromatic solvents | Excellent, resistant to acids and alkalis; not resistant to strong oxidants and organic solvents | Resistant to general acids and alkalis; not resistant to concentrated acids, aromatics, and ketones |
| Solvent Resistance | Poor (easily dissolved by aromatics and chlorinated hydrocarbons) | Medium (LDPE more easily swollen by solvents) | Medium (rigid PVC better than soft PVC) |
| Processing Temperature (℃) | 170-220 | 150-200 (Lower for LDPE, higher for HDPE) | 160-190 (requires stabilizers to prevent decomposition) |
| Weldability | Easy to weld, suitable for heat sealing and ultrasonic welding | Easy to weld, LDPE better than HDPE | Rigid PVC weldable; soft PVC poor due to plasticizer migration |
| Molding Methods | Extrusion, injection molding, blow molding, etc. | Extrusion, injection molding, blow molding, film forming, etc. | Extrusion, injection molding, calendering (soft PVC suitable for films, pipes) |
| Insulation | Excellent, low dielectric constant, good high-frequency insulation | Excellent, low dielectric loss, suitable for high-frequency insulation | Good, but rigid PVC better than soft PVC (affected by plasticizers) |
| Toxicity | Non-toxic, meets food contact standards | Non-toxic, meets food contact standards (pure PE) | Rigid PVC itself non-toxic but may contain lead stabilizers; soft PVC contains plasticizers (phthalates may be harmful) |
| Recyclability | Easy to recycle, can be reprocessed | Easy to recycle, HDPE has higher recycling rate than LDPE | Difficult to recycle, recycled material has significant performance degradation |
| Typical Uses | Food packaging, pipes, auto parts, medical devices | Films (plastic bags), containers, pipes, toys | Pipes (drainage), profiles (doors/windows), films, artificial leather |
