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測(cè)試既有MS密封膠再粘結(jié)型試片拉伸粘結(jié)性的方法
- 發(fā)布時(shí)間 : 2025-6-6 22:51:46
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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.
測(cè)試既有MS密封膠再粘結(jié)型試片拉伸粘結(jié)性的方法
(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 : 2025-6-6 22:51:46
- Views:
表/中試片在試驗(yàn)過(guò)程中均為8553內(nèi)聚破壞,即破壞面發(fā)生在既有MS密封膠上,而非再粘結(jié)使用的MS密封膠表/中再粘結(jié)試片最大強(qiáng)度伸長(zhǎng)率數(shù)據(jù)均已作近似處理,減去再粘結(jié)用的MS密封膠在該拉伸強(qiáng)度下對(duì)應(yīng)的最大強(qiáng)度伸長(zhǎng)率口可以認(rèn)為處理后的數(shù)據(jù)能表征所取既有幕墻MS密封膠膠樣的實(shí)際最大強(qiáng)度伸長(zhǎng)率。
CSI組為Cs組的同尺寸再粘結(jié)試片,最大強(qiáng)度值幾乎沒(méi)有變化,最大強(qiáng)度伸長(zhǎng)率變化不大組試片改變了尺寸,最大強(qiáng)度變化不大,極差為最大強(qiáng)度伸長(zhǎng)率變化相對(duì)較大,極差為。由以上結(jié)果可以得出結(jié)論:采用再粘結(jié)試片的方法能表征既有MS密封膠的最大強(qiáng)度;再粘結(jié)試片尺寸變化對(duì)最大強(qiáng)度影響不大,對(duì)最大強(qiáng)度伸長(zhǎng)率影響較大口玻璃幕墻工程技術(shù)規(guī)泡規(guī)定:幕墻MS密封膠設(shè)計(jì)不應(yīng)小于巨粘結(jié)寬度大于厚度口因此,推薦采用的取樣尺寸為寬H厚H口長(zhǎng)這樣,不同幕墻接縫尺寸的取樣要求都能滿足。對(duì)某個(gè)采用結(jié)構(gòu)膠的工程進(jìn)行現(xiàn)場(chǎng)取樣,該幕墻己自然曝曬老化姍年口取樣尺寸為寬H口厚H按峨擊資所述的制樣方法和CI劣所規(guī)定的條件進(jìn)行實(shí)驗(yàn),試片序號(hào)編為d口浦,測(cè)試結(jié)果如表P所示。
表P中試片在試驗(yàn)過(guò)程中均為內(nèi)聚破壞,說(shuō)明再粘結(jié)用的MS密封膠對(duì)己老化既有MS密封膠粘結(jié)良好口表P中最大強(qiáng)度伸長(zhǎng)率按表M中最大強(qiáng)度伸長(zhǎng)率數(shù)據(jù)處理方法,作同樣的近似處理口由表P可見(jiàn),固定取樣尺寸后,不同試樣間最大強(qiáng)度與最大強(qiáng)度伸長(zhǎng)率變動(dòng)不大,采用該取樣方法,具有較好的可重復(fù)性。
在MS密封膠膠縫設(shè)計(jì)范圍內(nèi),MS密封膠試片尺寸變化對(duì)最大強(qiáng)度影響不大,而對(duì)最大強(qiáng)度伸長(zhǎng)率影響較大。
實(shí)驗(yàn)用的MS密封膠與既有幕墻MS密封膠及己老化的既有幕墻MS密封膠都具有良好粘結(jié)性。
采用測(cè)試既有MS密封膠再粘結(jié)型試片拉伸粘結(jié)性的方法,能近似表征既有MS密封膠實(shí)際應(yīng)用中的最大強(qiáng)度。
既有MS密封膠再粘結(jié)型試片在規(guī)定養(yǎng)護(hù)條件下的養(yǎng)護(hù)時(shí)間應(yīng)不少于心。
考慮操作簡(jiǎn)單及適用性,推薦取樣尺寸為寬H長(zhǎng)該尺寸試片的最大強(qiáng)度可近似表征既有MS密封膠實(shí)際用中的最大強(qiáng)度,所得最大強(qiáng)度伸長(zhǎng)率可作參考指標(biāo)用以判斷既有幕墻結(jié)構(gòu)膠的可靠性及老化程度。http://pingjia100.com/
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