Ukukhetha Izinto Zokufafaza Zamapulangwe Ensimbi Anombala

Okwamanje, izinhlobo zokufafaza ezisetshenziswa kumapulangwe ensimbi anombala zifaka phakathi ukufafaza kwe-polyester / ukufafaza kwe-fluorocarbon / ukufafaza okwenziwe nge-silicon / ukufafaza okuphikisana nezimo zezulu / ukufafaza kwe-acrylic / ukufafaza kwe-polyurethane / ukufafaza kwe-plastisol, njll.

1、 Polyester coatings have good adhesion to materials, and color coated steel plates are easy to process and shape, with low prices, a wide range of products, and a wide range of color choices. In general environments, direct exposure can result in a corrosion resistance life of up to 7-8 years. However, in industrial environments or heavily polluted areas, its service life will be relatively shortened. However, the UV resistance and film crushing resistance of polyester coatings are not ideal. Therefore, the use of PE coating still needs to be restricted. It is usually used in areas with less air pollution or for products that require multiple molding and processing.

2、 Ngenxa yokuba khona kweqembu elisebenzayo - OH/- COOH ku-polyester, kulula ukuphendula nezinye ama-macromolecule kanye ne-polymer. Ukuze kuthuthukiswe ukumelana nokukhanya nokuphuka kwe-PE, i-silicone resin enokugcina umbala ophakeme nokumelana nokushisa isetshenziswa ukuze kwenziwe ukuphenduka, futhi izinga lokuphenduka ne-PE lingaba phakathi kuka-5% no-50%. I-SMP inikeza ukuqina okungcono kumaphaneli ensimbi, inempilo yokumelana nokugqwala efika eminyakeni engu-10-12. Ngokuqinisekile, intengo yayo iphinde ibe phezulu kune-PE, kodwa ngenxa yokungabi nempahla kahle nokwakhiwa kwe-silicone resin kumathuluzi, amaphaneli ensimbi anombala we-SMP awafaneleki ezikhathini ezidinga izinqubo zokwakha eziningi, futhi avame ukusetshenziswa ezindlini zokwakha nezindonga zangaphandle.

3、 High weather resistance polyester coatings are superior to ordinary silicon modified polyester coatings, with an outdoor weather resistance of up to 15 years. In the process of synthesizing high weather resistant polyester resin, monomers containing cyclohexane structure are used to achieve a balance between resin flexibility, weather resistance, and cost. Aromatic polyols and polyacids are used to reduce resin absorption of ultraviolet radiation and achieve high weather resistance of coatings. Add UV absorbers and space blocking amines (HALS) to the coating formula to improve the weather resistance of the paint film.

4、Plastic sol inezinhle ukumelana namanzi nokumelana nezinto zokwakha. Ngokuvamile, iyisithako esinekhono eliphezulu elinokwakheka okukhulu okungama-100-300 μ M, okungahlinzeka ngokuqinile kwe-PVC noma ukwelashwa okukhanyayo kokuphothulwa njengokuphothulwa okuphothiwe; Ngenxa kokuthi i-PVC iyinhlaka ye-thermoplastic enobukhulu obuphezulu befilimu, ingahlinzeka ngokuvikela okuhle kumapulangwe ensimbi. Kodwa i-PVC inokumelana okuphansi nokushisa.

5、 Ngenxa kobudlelwano obuqinile phakathi kwezixhumi ze-PVDF, le coating inokuqina okuhle kokumelana nokugqwala kanye nokugcina imibala. Iyi-oda ethuthukile kakhulu ku-Baosteel's color steel coil coating yokwakha, enesisindo esikhulu samamolekyuli kanye nesakhiwo sokuxhumana ngqo. Ngakho-ke, ngaphandle kokumelana nezinto zokwakha, izakhiwo zayo zomshini, ukumelana ne-UV, kanye nokumelana nokushisa nazo zikhangisa kakhulu. Ngokuvamile, impilo yokusebenza yokumelana nokugqwala ingafika eminyakeni engu-20-25. Eminyakeni yamuva, ama-fluororesins ahlanganiswe ne-trifluorochloroethylene kanye ne-vinyl ester monomers asebenzisa kakhulu e-China futhi asebenza kakhulu ezindlini zangaphandle kanye nezinsimbi. Ngenxa yokusetshenziswa kwe-vinyl ester monomers elula ukuhluza, okuqukethwe kwe-fluorine kuphansi ngama-30% uma kuqhathaniswa ne-PVDF, futhi ukumelana nezimo zezulu kunephuzu elithile uma kuqhathaniswa ne-PVDF.

6、 Acrylic resin has good comprehensive performance and high price, and is only used in specific fields such as containers.