Views: 7 Author: Xicheng EP LTD Publish Time: 2022-09-14 Origin: Xicheng EP LTD
When the polypropylene PP board is extruded, the temperature control of the plasticizing process of the melt is not difficult and the fluidity of the melt is good. Therefore, as long as the processing equipment is selected, the PP raw material can be directly input into the general molding process. Precision extrusion is carried out in molding equipment. As the industry requirements are getting higher and higher, the process requirements for adding some additives to PP boards are to meet some special performance requirements in the application of products or overcome some performance defects in raw materials.
Common additives for PP board include antioxidants, ultraviolet absorbers, antistatic agents and flame retardants, etc.
① Antioxidant, the antioxidant is added to the raw material to prevent the raw material from being automatically oxidized and degraded when it contacts with oxygen in the air during the molding process. The addition of a small amount of antioxidant is also beneficial to improve the quality of the product. At present, the PP boards produced in China already contain oxygen components before leaving the factory, so no antioxidants will be added if there is no special need.
② UV absorbers, plastic PP boards are easily degraded and aged by light (ultraviolet rays). Therefore, when polyolefin products are used in a long-term light environment, UV absorbers must be added to the raw materials before molding products.
③ Antistatic agent, due to the excellent insulating properties of PP, the electrostatic hazard generated by the extruded board during application is quite serious.
④ Flame retardant, PP is a kind of flammable substance. It can continue to burn when it leaves the fire source. In order to prevent the plastic products from burning more and more vigorously, flame retardants are usually added during extrusion molding. The domestic flame retardant PP board flame retardant grade certification V2 level reaches the V0 effect. Jiaberry flame retardant PP board has been recognized by the majority of customers.
Raw material name: Polypropylene has low density, strength, stiffness, hardness and heat resistance are better than low pressure polyethylene. It can be used at about 100 degrees. It has good electrical properties and high-frequency insulation. It is not affected by humidity, but it becomes brittle at low temperature. Mold resistant to aging. Suitable for making general mechanical parts, corrosion-resistant parts and insulating parts.
Good mechanical properties: The special structure of pp flame retardant board makes it have excellent mechanical properties such as good toughness, impact resistance, high compressive strength, cushioning and shock resistance, high stiffness and good bending performance.
Light weight and material saving: The pp flame retardant board produced by our company has excellent mechanical properties, and it should achieve the same effect year-on-year, and it is cost-effective.
Anti-static, conductive, flame retardant: Modification, mixing and other methods can make pp flame retardant board have anti-static, conductive, or flame retardant properties.
Stable chemical properties: pp flame retardant board can be waterproof, moisture-proof, anti-corrosion, anti-insect erosion, free from fumigation and has obvious advantages compared with cardboard and wood.
Smooth surface and complete colors: Due to the special molding process of the plastic hollow board, any color can be achieved by the color matching of the color masterbatch, and the pp flame retardant board has a smooth surface and is easy to print.
Good environmental protection effect: pp flame retardant board has the characteristics of non-toxicity and non-polluting, and the disposal is simple, and pp flame retardant board will not pollute the environment. It can also be recycled into other plastic products.
Polypropylene (PP) is a thermoplastic with an oxygen index of 17%. It is a relatively flammable polymer material, so it has poor fire resistance and is very prone to fire.
It is easy to weld and process, has excellent chemical resistance, heat resistance and impact resistance, non-toxic and odorless. It is one of the most environmentally friendly engineering plastics.
PP flame retardant sheet has more advantages than PP ordinary PP board, which is mainly reflected in fire and flame retardant. It is the first choice for engineering equipment, chemical equipment, environmental protection equipment, and electroplating equipment. In addition to the function of fire and flame retardant, it also has acid resistance. Alkali anti-oxidation, anti-ultraviolet, non-toxic, odorless, colorless and harmless, etc.
The density of PP flame retardant board is low. In the past, the density of ordinary flame retardant board is relatively high, and the cost performance is relatively high. The same weight and volume are large.
The flame retardant performance is good. If the thickness is more than 5mm, it can basically reach the VL94V0 standard. If it is less than 5mm, it can reach the V2 standard, which is conducive to welding, and the construction is convenient for assembly welding.