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聚氨酯復合板在建筑保溫工程中的應用!

來源:http://www.ebassfish.com/ 日期:2020-03-18 發布人:admin
  隨著PAPI用量的增加,泡沫的交聯度增大,強度和剛度增大。但是,如果PAPI用量過多,泡沫會變脆,芯材容易開裂。
  With the increase of PAPI dosage, the crosslinking degree of foam increases, and the strength and stiffness increase. However, if PAPI is used too much, the foam will become brittle and the core material will crack easily.
  首先,聚醚多元醇的選擇是最重要的。聚醚多元醇是聚氨酯硬泡的基本原料之一,它影響著泡沫芯材的物理力學性能、尺寸穩定性和發泡工藝性能。根據起始劑、羥值和粘度確定聚醚模型。
  First of all, the selection of polyether polyols is the most important. Polyether polyol is one of the basic raw materials for rigid polyurethane foam. It affects the physical and mechanical properties, dimensional stability and foaming process properties of foam core. The polyether model was determined according to initiator, hydroxyl value and viscosity.
  應選用乳化能力強的泡沫穩定劑。主要控制氣泡孔的大小,保持氣泡孔的穩定,防止氣泡孔的坍塌。硅酮泡沫穩定劑在這方面效果較好,其用量可在1.5 ~ 2.5(質量分數)范圍內調節發泡劑的種類和用量,直接影響聚氨酯硬泡的密度、強度等物理性能。
  Foam stabilizer with strong emulsifying capacity should be selected. It mainly controls the size of the bubble hole, maintains the stability of the bubble hole, and prevents the collapse of the bubble hole. Silicone foam stabilizer has better effect in this respect, and its dosage can regulate the type and dosage of foaming agent in the range of 1.5 ~ 2.5 (mass fraction), which directly affects the physical properties of polyurethane rigid foam, such as density and strength.
  發泡劑不僅可以調節和控制發泡產品的密度和性能,還可以降低聚醚的組合粘度,改善其發泡工藝,提高泡沫的流動性,有利于泡沫的成型。鑒于可持續發展戰略的需要,對生態環境危害嚴重的氟碳化合物的使用受到了限制,替代發泡劑的使用也受到了限制。
  Foaming agent can not only regulate and control the density and performance of foaming products, but also reduce the combined viscosity of polyether, improve the foaming process, improve the fluidity of foam, and facilitate the formation of foam. In view of the need of sustainable development strategy, the use of fluorocarbons which are harmful to the ecological environment is limited, and the use of alternative foaming agents is also limited.
濟南復合板廠
  選擇催化劑可以選擇延遲催化體系,使乳白時間與凝膠時間間隔更長,有效提高發泡體系的流動性,提高泡沫性能,從而適合生產工藝操作。腔泡沫是否均勻,細度的泡沫,泡沫的關閉率和其他因素對整體絕緣性能有很大的影響的,這些因素與泡沫之間的粘連程度和空心墻,泡沫的穩定性大小。
  Choosing catalyst can choose delayed catalytic system, make the interval between milky white time and gel time longer, effectively improve the fluidity of foaming system and improve the performance of foam, so that it is suitable for production process operation. The uniformity of cavity foam, the fineness of the foam, the closing rate of foam and other factors have great influence on the overall insulation performance. These factors are related to the degree of adhesion between the foam and the hollow wall, and the stability of the foam.
  阻燃劑可以提高泡沫塑料的阻燃性,但在發泡過程中阻燃劑對泡沫的破壞作用較大。在提高阻燃效果的前提下,可以保證泡沫塑料的使用性能和尺寸穩定性。
  Flame retardants can improve the flame retardancy of foam plastics, but the effect of flame retardants on foaming is greater during foaming process. The performance and dimensional stability of foamed plastics can be guaranteed on the premise of improving the flame retardant effect.
  聚氨酯復合板具有更好的耐磨性和耐腐蝕性,可以在建筑保溫、隔熱、吸聲降噪等性能上非常突出,所以如何選擇更好是非常重要的。當然,有必要多了解一下聚氨酯復合板的報價。
  Polyurethane composite board has better wear resistance and corrosion resistance, which can be very prominent in building insulation, heat insulation, sound absorption and noise reduction, so how to choose better is very important. Of course, it is necessary to know more about the quotation of polyurethane composite board.
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