硅烷改性聚氨酯密封膠膠料的挺性
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聚氨酯密封膠膠料高溫下流淌失效的問(wèn)題
- 發(fā)布時(shí)間 : 2023-3-8 11:58:20
- Views:
(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.
聚氨酯密封膠膠料高溫下流淌失效的問(wèn)題
(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 : 2023-3-8 11:58:20
- Views:
Information
1、本文的研究旨在制備一種以聚異丁烯系列材料為基體的微交聯(lián)型自修復(fù)輪胎聚氨酯密封膠膠料，通過(guò)不同混煉和工方式找到制備效果較好較快的工藝方法。
2、調(diào)整聚氨酯密封膠膠料中丁基橡膠和中分子量聚異丁烯兩種基體的配比，討論基體材料配比和中分子量聚異丁烯分子量以及低分子量聚異丁烯用量對(duì)氣密膠性能的影響規(guī)律，討論硫化劑用量與正十二硫醇改性對(duì)聚氨酯密封膠膠料性能的影響規(guī)律，找到性能較為平均，自修復(fù)自封堵性能較好的制備配方，探究各組分用量對(duì)聚氨酯密封膠膠料性能影響的原因與規(guī)律。
3、探究評(píng)價(jià)自修復(fù)輪胎聚氨酯密封膠膠料性能的表征方法，證明本文制備的氣密膠高溫下抗流動(dòng)性和回彈性優(yōu)于市售熱熔型產(chǎn)品。
課題意義和創(chuàng)新點(diǎn)。
1、在傳統(tǒng)熱熔型自修復(fù)輪胎聚氨酯密封膠膠料的基礎(chǔ)上以聚異丁烯系列材料為基體加入了微交聯(lián)結(jié)構(gòu)，解決了熱熔型自修復(fù)輪胎聚氨酯密封膠膠料高溫下流淌失效的問(wèn)題。
2、通過(guò)Thiol-ene點(diǎn)擊反應(yīng)改性微交聯(lián)自修復(fù)輪胎聚氨酯密封膠膠料，能夠在對(duì)聚氨酯密封膠膠料本體強(qiáng)度影響較小的情況下降低聚氨酯密封膠膠料模量、增加聚氨酯密封膠膠料粘性。
3、設(shè)計(jì)制備了在實(shí)驗(yàn)室可進(jìn)行操作的測(cè)試自修復(fù)輪胎聚氨酯密封膠膠料自修復(fù)自封堵性能的小型實(shí)驗(yàn)設(shè)備，并對(duì)本文制備的聚氨酯密封膠膠料自封堵性能進(jìn)行了表征測(cè)試。
在一些與自修復(fù)防爆輪胎相關(guān)專利中，例如朱淵等會(huì)使用專用熔桶進(jìn)行長(zhǎng)時(shí)間高溫?cái)嚢柽M(jìn)行混合加工，部分輪胎自封堵聚氨酯密封膠膠料生產(chǎn)廠家會(huì)用反應(yīng)釜進(jìn)行高溫?cái)嚢杌蛴妹軣挋C(jī)、捏合機(jī)進(jìn)行混料。參照他們對(duì)于聚氨酯密封膠膠料的混合方法，本文利用開口反應(yīng)器進(jìn)行了高溫加工工藝的嘗試。
由于本文制備的聚氨酯密封膠膠料需產(chǎn)生微交聯(lián)結(jié)構(gòu)，故加工工藝會(huì)在熱熔型氣密膠的基礎(chǔ)上進(jìn)行變化，加工裝置示意圖如圖2-1所示。m.hbxqtax.com
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