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扩链剂对脱酮肪型单组分聚氨酯密封胶胶性能的影响
- 发布时间 : 2024-7-11 11:03:32
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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.
扩链剂对脱酮肪型单组分聚氨酯密封胶胶性能的影响
(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 : 2024-7-11 11:03:32
- Views:
取聚氨酯密封胶胶基料100份、甲基三丁酮肪基硅烷4份、乙烯基三丁酮肪基硅烷1份、LT-550偶联剂1份、二月桂酸二丁基锡0.1份,改变扩链剂ZL-08的用量,分别制成脱酮厉型单组分聚氨酯密封胶胶,并考察扩链剂对其性能的影响。详细试验结果列于表2。
从表2可以看出,与单组分脱醇型聚氨酯密封胶胶类似,随着扩链剂用量的增加,聚氨酯密封胶的拉伸强度和硬度逐渐减小,断裂伸长率逐渐增大。其中,添加2份扩链剂的聚氨酯密封胶断裂伸长率达到482.25%,拉伸强度为1.6 MPa,但是表面消粘时间较长。综合考虑聚氨酯密封胶的表干时间、表面消粘时间、拉伸强度和断裂伸长率等因素,当扩链剂的添加量为1份时,聚氨酯密封胶的各项综合性能最优。扩链剂对脱醇型单组分门窗胶性能的影响。
取门窗胶基料100份、甲基三甲氧基硅烷3份、有机钦酸醋配合物1.5份,改变扩链剂ZL-08的用量,分别制成脱醇型单组分门窗胶,并考察扩链剂对其性能的影响。同时,将未硫化的门窗胶置于100 ℃的密闭烘箱中,加速老化48 h后取出;放置在标准条件下冷却24 h后,测试聚氨酯密封胶的表干等性能,考察聚氨酯密封胶的保质期。详细试验结果列于表3。http://www.sdyuantai.com/
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