The insulation layer is made of rigid polyurethane foam with a density of 60kg/m3 ~ 80kg/m3, which fully fills the gap between the steel pipe and the casing, and has a certain bonding strength, so that the steel tube, the outer pipe and the insulation layer form a solid whole. Polyurethane directly buried insulation pipe foam has good mechanical properties and thermal insulation properties. Usually it can withstand 120 degrees of temperature by modifying or combining with other thermal insulation materials.

　　1. 防腐層:保護鋼管外層不受腐蝕，延長鋼管使用壽命。

　　1. Anti corrosion coating: protect the outer layer of steel pipe from corrosion and extend the service life of steel pipe.

　　2. 外保護鋼管:保護保溫層不受地下水侵蝕，支撐工作管道，能承受一定的外荷載，保證工作管道的正常運行。

　　2. External protection steel pipe: protect the insulation layer from groundwater erosion, support the working pipeline, bear certain external load, and ensure the normal operation of the working pipeline.

　　3.聚氨酯泡沫層:保證介質(zhì)溫度和外層保護管表面溫度保持正常。

　　3. polyurethane foam layer: ensure the medium temperature and the surface temperature of the outer protective tube are kept normal.

　　4. 屏障和反射層:確保有機泡沫材料不進入無機硬質(zhì)耐高溫層;反射耐高溫層的部分熱量。

　　4. barrier and reflective layer: ensure that organic foam material does not enter the inorganic hard and high-temperature resistant layer; reflects part of the heat of the high temperature resistant layer.

　　5. 無機硬保溫層:耐高溫，保證有機保溫層之間的界面溫度，保證泡沫不碳化。

　　5. inorganic hard insulation: high temperature, ensure the interface temperature between the organic insulation layer, ensure that the foam is not carbonized.

　　6. 減阻層:保證工作鋼管在熱脹冷縮時的自由運動。

　　6. Drag reduction layer: ensure the free movement of the working steel pipe during thermal expansion and cold contraction.

　　7. 工作鋼管:保證輸送介質(zhì)的正常流動。

　　7. Working steel pipe: ensure the normal flow of conveying medium.

　　聚氨酯三工藝發(fā)泡聚氨酯

　　Polyurethane three process foaming polyurethane

　　二聚體的方法

　　The method of dimer

　　預(yù)聚體法的發(fā)泡過程是先將(白色材料)和(黑色材料)制成預(yù)聚體，再將水、催化劑、表面活性劑等添加劑加入預(yù)聚體中，高速攪拌混合發(fā)泡。固化后可在一定溫度下固化。

　　The foaming process of prepolymer method is to make prepolymer from (white material) and (black material), then add water, catalyst, surfactant and other additives into prepolymer, and mix the foaming at high speed. After curing, it can be cured at a certain temperature.

　　半a預(yù)聚體

　　Semia prepolymer

　　semi-prepolymer的發(fā)泡過程方法是使聚醚多元醇的一部分(白色物質(zhì))和二異氰酸酯(黑色材料)預(yù)聚物,然后添加聚醚的另一部分或聚氨酯多元醇dicyanate酯、水、催化劑、表面活性劑和其他添加劑,并在高速攪拌發(fā)泡混合它們。

　　The foaming process of semi prepolymer is to make a part of polyether polyol (white material) and diisocyanate (black material) prepolymer, then add another part of polyether or polyurethane polyol dicyanate ester, water, catalyst, surfactant and other additives, and mix them in high-speed stirring foaming.

　　一步發(fā)泡

　　One step foaming

　　聚醚或聚酯多元醇(白色材料)、聚異氰酸酯(黑色材料)等原料、水、催化劑、表面活性劑、發(fā)泡劑等添加劑一步加入，高速攪拌發(fā)泡。

　　Polyether or polyester polyol (white material), polyisocyanate (black material) and other raw materials, water, catalyst, surfactant, foaming agent and other additives are added in one step, and foaming is stirred at high speed.

　　一步發(fā)泡工藝應(yīng)用廣泛。還有手工發(fā)泡的過程，這是zUI的一個簡單的方法，精確稱量所有的原料，把它們放在一個容器里，然后立即混合，注入模具或需要填充泡沫的空間。注:多異氰酸酯(黑色材料)的zUI必須稱重。

　　One step foaming process is widely used. There is also manual foaming process, which is a simple method of zUI, weighing all raw materials accurately, placing them in a container, then mixing immediately, injecting mold or filling the space of foam. Note: Zui of polyisocyanate (black material) must be weighed.

　　聚氨酯硬泡一般是室溫發(fā)泡，成型過程相對簡單。按施工機械化程度可分為手工發(fā)泡和機械發(fā)泡;根據(jù)發(fā)泡壓力可分為高壓發(fā)泡和低壓發(fā)泡;按成型方式可分為澆注泡沫和噴淋泡沫。

　　Polyurethane rigid foam is usually room temperature foaming, the molding process is relatively simple. According to the degree of mechanization of construction, it can be divided into manual foaming and mechanical foaming. According to foaming pressure, it can be divided into high-pressure foaming and low pressure foaming. According to the forming method, it can be divided into pouring foam and spray foam.

　　高溫預(yù)制直埋保溫管主要由四部分組成:

　　High temperature prefabricated directly buried insulation pipe mainly consists of four parts:

　　工作鋼管:按輸送介質(zhì)的技術(shù)要求焊接鋼管、無縫鋼管和雙面埋弧螺旋焊接鋼管應(yīng)使用。

　　Working steel pipe: welded steel pipe, seamless steel pipe and double-sided submerged arc spiral welded steel pipe shall be used according to the technical requirements of transmission medium.

　　保溫層:硬質(zhì)聚氨酯泡沫。

　　Insulation layer: rigid polyurethane foam.

　　防護外殼:高密度聚乙烯或玻璃纖維。

　　Protective shell: high density polyethylene or glass fiber.

　　以上是濟南保溫管廠家小編為大家介紹的相關(guān)內(nèi)容，想要了解更多內(nèi)容，歡迎訪問網(wǎng)站：http://www.qndr49.cn

　　The above is the relevant content introduced by Jinan heat preservation pipe manufacturer. If you want to know more, please visit the website: http://www.qndr49.cn