1. Selection of Resin Different resin types have different gloss properties of their corresponding products. For PP, the random copolymer has the best gloss. For PE, LDPE is the best. For PVC, the suspension method is the best. For PS, HIPS is the best. 2. The greater the flow rate (MFR) of the characteristic solution of the resin, the better the gloss. The wider the molecular weight distribution, the worse the gloss of the article. The gloss of the resin having a high water absorption rate is also poor. Second: the choice of additives is the most important filler, followed by plasticizers, stabilizers and flame retardants. 1. The metal salt of the filler has the least influence, followed by calcium carbonate, and the largest is mica. 2. The shape of the filler is small in the shape of spheres and grains, and the influence of needles and flakes is large. 3, the particle size of the filler, the smaller the particle size of the filler, the smaller the impact on the gloss 4, the amount of filler added, the more the amount, the worse the gloss 5, the surface treatment of the filler is not relatively difficult to surface treatment 6. Most plasticizers can increase gloss, but DBP exceptions 7. CaSt and BaSt in stabilizers reduce gloss, while PbSt and organotin improve gloss 8, all lubricants can increase luster 9, the flame retardant will reduce the gloss Three: plastic addition brightening method 1. Gloss agents such as polyethers, higher aliphatic hydrocarbons, amide compounds, bismuth heavy metals, surfactants, stearyl alcohol, etc. 2, external lubricant liquid paraffin, polyethylene wax, stearic acid, bis stearamide, silicone oil, etc. 3. Nucleating agent phosphate system, etc. 4, special colorants, fluorescent whitening agents, etc. Four: plastic blending brightening method, for example, adding PMMA and LLDPE to PVC and adding LDPE Five: plastic form control brightening method double-sound stretching technology, control processing temperature Six: reduce the roughness of molding equipment Seven: plastic surface layering brightening
Galvanized Highway Guardrail
Hot-dip galvanized steel guardrail /w beam guardrail/crash barrier and posts are mainly used for safety protection on highways and first-class highways at home and abroad. Q235 material is used domestically, and Q345 material is used abroad. The steel plate is formed by cold bending and then galvanized and electrostatically sprayed.
Highway Guardrail Highway Guardrail Accessories,Metal Beam Guardrail,Highway Guardrail,Galvanized Highway Guardrails Shandong Hengfeng Group , https://www.luhengfeng.com
It has strong corrosion resistance, bright and beautiful appearance, and high anti-collision strength, which meets the standards of the Ministry of Communications. , In line with GB / T31429.1-2015 "Anti-corrosion Conditions of Expressway Traffic Engineering Components" standard. Requirements of "Waveform Steel Guardrail Part 1: Double Waveform Beam Steel Guardrail"
