1.風系數(shù):噴涂時風速應小于5m /s。由于風速超過5m /s，反應產(chǎn)生的熱量會被吹走，影響聚氨酯泡沫的快速發(fā)泡反應，使產(chǎn)品表面易碎。同時，由于噴涂發(fā)泡機會將原料混合，使噴涂處于霧化狀態(tài)，如風速過大，會將霧化的顆粒吹走，增加了原料的損耗，污染了環(huán)境。
1. Wind coefficient: the wind speed during spraying shall be less than 5m / s. Because the wind speed exceeds 5m /s, the heat generated by the reaction will be blown away, which will affect the rapid foaming reaction of the polyurethane foam and make the surface of the product fragile. At the same time, because the spraying foaming opportunity mixes the raw materials, the spraying is in the atomization state. If the wind speed is too high, the atomized particles will be blown away, which increases the loss of raw materials and pollutes the environment.
2.溫度因素:噴涂時，被噴涂基材的現(xiàn)場環(huán)境溫度和表面溫度應在15℃35℃之間。溫度過低時，聚氨酯泡沫與基體的附著力降低，噴涂硬質泡沫制品的密度明顯增大。如果溫度過高，發(fā)泡劑損失太大，不經(jīng)濟。
2. Temperature factor: during spraying, the on-site ambient temperature and surface temperature of the sprayed substrate shall be between 15 ℃ and 35 ℃. When the temperature is too low, the adhesion between polyurethane foam and matrix decreases, and the density of rigid foam products is increased obviously. If the temperature is too high, the loss of foaming agent is too large and uneconomical.
生產(chǎn)現(xiàn)場Pu保溫鋼管
Pu insulated steel pipe at production site
3.底物表面因子:聚氨酯硬泡是異氰酸酯與聚醚雙組分混合反應生成的聚合物產(chǎn)品。其中，異氰酸酯組分易與水反應生成尿素。因此，要求噴涂的基材表面清潔干燥，無銹蝕、無灰塵、無污染、無潮氣。如果有露珠或霜凍，應將其除去并晾干。
3. Substrate surface factor: polyurethane rigid foam is a polymer product produced by the mixed reaction of isocyanate and polyether. Among them, isocyanate is easy to react with water to form urea. Therefore, the surface of spraying base material is required to be clean and dry without rust, dust, pollution and moisture. If there is dew or frost, it should be removed and dried.
聚氨酯泡沫保溫管,施工時在某些情況下無法逆轉,聚氨酯泡沫保溫管安裝要使用正確的方法,當有一個小錯誤的言語不能功能足以給他,這樣多余的管道保溫技術,他對未來發(fā)展趨勢進行了分析,對國內經(jīng)濟更能帶來很大的影響。
The polyurethane foam insulation pipe can not be reversed in some cases during construction. The installation of polyurethane foam insulation pipe should use the correct method. When there is a small wrong language that can not function enough for him, such an excess pipe insulation technology, he analyzes the future development trend, and has a great impact on the domestic economy.
以上是
聚氨酯保溫鋼管廠家為大家介紹的相關內容，想要了解更多內容，歡迎訪問網(wǎng)站：http://www.qndr49.cn
The above is the relevant content introduced by the polyurethane insulated steel pipe manufacturer. For more information, please visit the website: http://www.qndr49.cn
