Comparison of the product characteristics of PU Mouldings and PS Mouldings
The characteristics of the product
1.The raw materials of the product
PU is the abbreviation of Polyurethane, and the Chinese name is polyurethane for short. Polyurethane (PU) consists of a polyhydroxy compound and a diisocyanate, or a polyisocyanate reacted with suitable catalysts and additives, and then the decorative lines are formed through the production process of mold casting, oil spraying and painting.
PS is the abbreviation of Polystyrene, It is generally made of general-purpose polystyrene (thermoplastic resin), heated, injected into a mold, and then cooled to produce decorative line products.
2.The density and weight of the product
Both PS Mouldings and PU Mouldings are foamed products. The density and weight of the PU Mouldings is 200-260kg/m, and the density and weight of PS mouldings are 104-109kg/m, which is lighter than PVC and PU.
3.Hardness and impact resistance
The hardness of the PU Moulding is high, and under normal circumstances, its hardness can reach the standard of general wood. The PS Moulding is a hard and brittle material with low impact resistance and easy to break under the applied force.
4.Green and environmental protection
The main raw materials of the new PU Moulding come from plant fibers, such as: straw, wood chips, straw, etc., which can effectively reduce deforestation and protect the natural environment. Moreover, once discarded, it can directly enter the natural degradation cycle, in 40-50 years It can be completely degraded within.
The main raw material of the PS Moulding is polystyrene. Once the product is discarded, it cannot enter the natural degradation cycle (biodegradation and photodecomposition). When our country's recycling system is not yet complete, random disposal can easily cause environmental pollution, which is what we often call "white pollution". Although some PS materials can be recycled and reused (PS plastic classification mark code is 6), the collection, classification, cleaning and reprocessing of PS Mouldings are very difficult and expensive.
What are the differences between PU Mouldings and PS Mouldings in terms of decoration?
Livable characteristics
1. Waterproof and mildew proof
Both PU Mouldings and PS Mouldings are foamed plastics, which are good in water resistance and mildew resistance. Their surface is smooth and non-hydrophilic, they can slide off naturally after being dipped in water, and they can be air-dried naturally. There is no need to worry about water deformation and mold, and there is no problem even if they are used in the bathroom!
2.Fire resistance
In the production process of PU Moulding, flame retardant is added, and flame retardant is sprayed after construction, which can achieve the fire prevention effect of non spontaneous combustion, non-combustion, and automatic extinguishment away from the fire source. However, the PS moulding itself has poor heat resistance, it will ignite when exposed to fire, and will produce thick black smoke and pungent toxic gases when burned.
3.Insect resistance
PU Moulding is known as the "fifth largest plastic". PS Moulding is a kind of thermoplastic. Both products do not contain the nutrients needed by insects and ants, so they are not attractive. In addition, the two products are not easy to swell or crack when exposed to water, and insects and ants cannot penetrate into the cracks to live in, and have good insect resistance.
4. Non-toxic
The PU Moulding uses a fluorine-free formula, and the material is not chemically controversial. The main raw material used in the PS Moulding is general-purpose polystyrene, which is made by radical polymerization or ionic polymerization using styrene as the monomer. Styrene has been included in the list of 2B carcinogens in 2017, and long-term use will cause harm to human health.
5.Style richness
The PU Mouldings are foamed and formed in the mold. After demolding, the surface pattern of the product itself can be very delicate and delicate with the fineness of the mold, and it also has a strong three-dimensional effect.
PS Moulding styles are also very rich, but its production process is mainly through injection molding and then embossing with rollers. The richness and three-dimensional sense of the pattern is far from the PU Moulding.
6. Colorability
The colorability of PU Mouldings is very good, and it can be easily painted or painted on its surface to meet the needs of designers and owners for various styles and colors, such as: pure white, washed white, imitation stone, imitation jade, Imitation wood, antique copper, etc. In addition, for some special design needs, gold, gold or silver foil can be painted on the surface of PU Building Materials to create a palace-like luxury.
The PS Moulding is slightly weaker in this respect, and its surface is generally painted with latex paint or operated by transfer printing. However, the surface of the PS moulding has almost no pores, so the adhesion of the pigment is very weak, and the color is easy to fade after a long time.
The difference in the construction of PU Mouldings and PS Mouldings
1. Construction method
In addition to the construction characteristics of nailing, sawing, and planing, PU Mouldings are also very suitable for sanding operations. The soft oulding of PU with special ingredients added during production can be bent in the face of various corners and shapes, and there is no need to worry about cracks and deformation during the bending process. The PS Moulding is a hard and brittle material, easy to burst and crack, and cannot be bent.
2. Materials consumed in construction
During construction, PU Mouldings need to use AB glue, mosquito nails, putty ash, paint and other materials; PS Mouldings need 881 nail-free glue (special glue for PS foam lines), nails, putty ash and paint, etc., and the two are not much different.
3. Security
Both the PU Moulding and the PS moulding are relatively light, and will not cause great harm to the human body even if they fall. They are also very popular in Japan and Taiwan, where earthquakes are frequent.
What scenes are PU Mouldings and PS Mouldings applied to?
Application scenarios
Both lines can be used indoors and outdoors. However, when used outdoors, it is necessary to use real stone paint and anti-ultraviolet paint on the surface of building materials to reduce the damage of ultraviolet rays to the product, thereby extending the physical properties and service life of the line color change.
Through the above comparison, do you have a certain understanding of the characteristics of the two lines and their respective pros and cons? Based on the results of many comparisons above, it can be seen that PU Mouldings are better than PS Mouldings in terms of livability and style, and are more suitable for occasions that require high-quality decoration. In addition, the environmental protection of PU Mouldings has an overwhelming advantage over PS mouldings. For our common earth home, we hope you use fully degradable environmentally friendly building materials.
