增塑剂对MS密封胶的影响

发布时间 : 2026-8-10 15:43:32
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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.

增塑剂对MS密封胶的影响

(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.

发布时间 : 2026-8-10 15:43:32
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将预先制备好的MS密封胶等分为5份，分别添加不同量的烷氧基硅烷增塑剂，在标准条件下对5份MS密封胶进行各项性能测试，测试结果见表4。采用邻苯二甲酸丁醋以及硅油两种传统MS密封胶增塑剂分别进行同样的处理和测试。

由表可知，使用烷氧基硅烷增塑剂对基材不会造成污染;不添加增塑剂时，MS密封胶的挤出性偏差，拉伸强度较大，断裂伸长率较小;(增塑剂)二20%时，表干时间过长，挤出性过大，同时对下垂度也有明响;w(增塑剂)二io%时，各项性能指标优良，符合施工需要。由表5可以看出，使用邻苯二甲酸丁醋作为增塑剂，当w(增塑剂)二5%时，密封胶对基材不会造成污染，但是拉伸强度偏大，断裂伸长率较小，影响施工效果;w(增塑剂)10%时开始对基材造成污染，w(增塑剂)=18%时，MS密封胶的性能可以得到很大改善，但是污染性测试表明，此时会对基材造成严重污染。由表6可知，使用硅油作为增塑剂，当功(增塑剂)二5%时即会对基材造成污染，二(增塑剂)= 20%时可使MS密封胶性能得到很大改善，但是也会对基材造成严重污染。基于上述结果可以看出，制备的烷氧基硅烷增塑剂不仅可以替代常规MS密封胶增塑剂而且不会造成渗油污染。

以有机硅高沸物和正辛醇为原料合成新型MS密封胶增塑剂。通过正交实验得到最佳工艺条件为:n(氯硅烷):n(正辛醇)=1:6，反应温度110℃，反应时间21 h。在此工艺条件下制备的产品中w(有机氯)可低3.02%。性能测试表明，此增塑剂可较好地改善MS密封胶的性能，并且可以有效解决MS密封胶渗油污染的问题，当w(增塑剂)=io%时施工性能最佳。此新型增塑剂的合成使有机硅高沸物得到充分利用，实现了“变废为宝”，具有较大的经济和社会效益。http://www.sdyuantai.com/

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