防突環(huán)結(jié)構(gòu)及參數(shù)對(duì)單組分聚氨酯密封膠膠筒密封性能的影響

發(fā)布時(shí)間 : 2025-6-4 10:07:47
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(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.

防突環(huán)結(jié)構(gòu)及參數(shù)對(duì)單組分聚氨酯密封膠膠筒密封性能的影響

(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.

發(fā)布時(shí)間 : 2025-6-4 10:07:47
Views:

可以看出有限元分析的防突環(huán)和中單組分聚氨酯密封膠膠筒變形情況與實(shí)驗(yàn)結(jié)果基本一致，表明文中仿真方法和結(jié)果具有一定的可靠性。因此在此基礎(chǔ)上采用仿真方法對(duì)單組分聚氨酯密封膠膠筒的結(jié)構(gòu)形狀和幾何尺寸進(jìn)行了優(yōu)化，考慮密封失效是由于中間單組分聚氨酯密封膠膠筒過長(zhǎng)和應(yīng)力集中引起，故對(duì)中單組分聚氨酯密封膠膠筒進(jìn)行進(jìn)一步優(yōu)化。將中間單單組分聚氨酯密封膠膠筒改為中間三單組分聚氨酯密封膠膠筒，設(shè)計(jì)的新型中間三單組分聚氨酯密封膠膠筒結(jié)構(gòu)如圖9所示。梭鏢敏感參數(shù)優(yōu)化分析對(duì)設(shè)計(jì)的新型中間三單組分聚氨酯密封膠膠筒結(jié)構(gòu)進(jìn)行敏感性參數(shù)分析，研究了防突環(huán)和單組分聚氨酯密封膠膠筒結(jié)構(gòu)參數(shù)等對(duì)滑套單組分聚氨酯密封膠膠筒密封性能的影響規(guī)律。

防突環(huán)結(jié)構(gòu)的影響

防突環(huán)的材料對(duì)于單組分聚氨酯密封膠膠筒橡膠壓縮程度有影響，材料塑性變形大，橡膠與套管內(nèi)壁更貼合。由于鎂鋁合金強(qiáng)度較低，在單組分聚氨酯密封膠膠筒壓縮過程中鎂鋁合金塑性變形大，因此考慮塑性變形和后續(xù)溶解，防突環(huán)的材料選用鎂鋁合金材料。鎂鋁合金材料的彈性模量為15 200MPa，泊松比為0. 3，密度為1. 835 g/cm3，應(yīng)力一應(yīng)變曲線如圖所示。

文中設(shè)計(jì)3種防突環(huán)結(jié)構(gòu)，如圖11所示，分別為不開槽、開設(shè)矩形和梯形槽。對(duì)3種防突環(huán)結(jié)構(gòu)進(jìn)行有限元分析，結(jié)果如圖所示。

從圖中可以看出當(dāng)加壓45 MP。時(shí)，開槽防突環(huán)的最大接觸壓力大于未開槽防突環(huán);從圖中可以看出，開槽防突環(huán)的最小密封壓力大于未開槽防突環(huán)，其中未開槽防突環(huán)的最小密封壓力為41. 5 MPa左右，矩形槽的最小密封壓力達(dá)到46. 7MPa，梯形槽達(dá)到44. 75 MPa。因此矩形槽的密封性能大于其余2種。http://pingjia100.com/

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上一篇: 硅烷改性聚氨酯密封膠施工與其他外墻構(gòu)造的協(xié)同工作

下一篇: 探究防突環(huán)數(shù)量b對(duì)丁基防水嵌縫膠膠筒密封的影響