What is Polyethylene Foam?
Polyethylene foam (polyethylene plastic) is made of polyethylene resin and is made of foaming agent, crosslinking agent and other additives. It has a small density, the minimum can reach 0.01 / cm3; cushioning, heat resistance, and small water absorption; stable chemical properties, not easy to be corroded; good mechanical properties, tough, flexible, and friction resistant; good processing performance, easy to form ; Cheaper advantages.
Polyethylene foam
Polyethylene foam (polyethylene plastic) is based on
Polyethylene foam is widely used in the packaging of precision instruments and meters, household appliances, glass and ceramic products, crafts, valuables, etc .; it can be made into a cushion pad as a packaging lining material; it can also be made into a buffer bag , Buffer containers and other packaging containers; also can be made into frozen food and hot food insulation containers.
Polyethylene foam plastic has good chemical resistance, and does not cause rust and corrosion of the product when directly contacting the product during packaging. Therefore, the packaging volume and the floor area of the goods can be reduced, and the handling cost and storage cost are reduced.
Most high-foam polyethylene has a closed-cell structure and does not absorb moisture. Even if it is stored outdoors, it will not be affected by wind and rain: the cushioning performance of the foam itself will not be weakened. Polyethylene foam is usually used as the packaging lining material. Different products can be used in different forms, such as up-down padding, two-side padding, peripheral padding, and matching appearance. Different commodities should also use polyethylene foam with different characteristics.
In agriculture, the use of polyethylene foam is not small. As a greenhouse for seedlings, vegetables, fruits, etc., it has the advantages of firmness, heat preservation, good weather resistance, and longer service life than non-foaming polyethylene and polyvinyl chloride films. It is used as the wall of the cold-proof shed for night heat preservation and shading cultivation.
1.1 Basic introduction
category | Performance characteristics | Implementation standards |
Polyethylene foam (PE) | This material is a soft closed-cell material with a thermal conductivity similar to that of an EPS board. Good chemical stability and acid and alkali resistance. This product has the following two outstanding characteristics: extremely low water absorption, almost no water absorption; water vapor permeability coefficient is extremely small, almost no water vapor. | |
1.2. Product Specifications and Scope
Product Category | Product variety | Specifications | Scope of application |
Polyethylene foam (PE) | | Foaming multiple: 15, 30, 45 Plate: length 2000mm, width 1000mm, thickness 2.5mm 100mm Pipe material: 10 60mm, thickness 6mm 13mm Can be processed into various shapes according to user requirements. | 15 25 |
Note: 1. means applicable; means more applicable; means most applicable.
1.3. Main technical performance and implementation standards
project | Polyethylene foam | | |
45 times | 30 times | 20 times | |
Density (kg / m) | 26 | 26 33 | 40 53 |
Thermal conductivity ((W / m · K)) | 0.037 | 0.041 | 0.044 |
Moisture permeability coefficient ng / (m · s · Pa) | <4.2 × 10 | | |
Water absorption (V / V) (%) | 4kg / m | 4kg / m | 4kg / m |
Operating temperature range () | -100 90 | | |
Burning performance level or flame resistance | Self-extinguishing within 2 seconds of leaving the fire | | |
1.4 Main Features and Design Selection Points
(1) It has almost no water absorption and almost no water vapor, and will not be wet under long-term use in a humid environment, so the thermal conductivity can remain unchanged (EPS, PUR, PF, etc. cannot be compared with it), and it is a flexible foam. Has good flexibility.
(2) The compression performance is poor. There is compression creep when used under pressure.
(3) Suitable for low temperature pipes and air conditioning ducts.
