SBR在非固化橡胶沥青防水涂料中的应用

SBR是非固化橡胶沥青防水涂料的主要改性剂之一,本文介绍了SBR改性非固化橡胶沥青防水涂料的制备方法,探讨了SBR添加量对非固化橡胶沥青防水涂料耐热性能、低温性能、延伸性能和黏度的影响。结果表明,随着SBR添加量的增大,非固化橡胶沥青防水涂料的耐热性能基本不变,低温性能大幅提升,延伸性能得到改善,黏度也随之增大;当SBR的添加量达到5%时,非固化橡胶沥青防水涂料的喷涂施工会变得比较困难。     

单组分水性非固化橡胶沥青防水涂料的制备及性能研究

以乳化沥青为基础原料制备了单组分水性非固化橡胶沥青防水涂料,研究了增塑剂乳液对其性能的影响。结果表明:当增塑剂乳液用量为16%~20%时,制备的单组分水性非固化橡胶沥青防水涂料性能最佳,较热熔型非固化橡胶沥青防水涂料更具有耐热性和粘附特性等技术优势。     

非固化橡胶沥青防水涂料的制备及其性能研究

以沥青、粉末丁苯橡胶、脱硫胶粉、增塑剂、耐热改性剂等主要原料制备了非固化橡胶沥青防水涂料,并探讨了粉末丁苯橡胶、脱硫胶粉、增塑剂、耐热改性剂用量对非固化橡胶沥青防水涂料性能的影响。本研究制备的非固化橡胶沥青防水涂料耐高低温性能好、永不固化、黏结性强、自愈能力强,具有非常良好的蠕变能力。     

高耐热型非固化橡胶沥青防水涂料的关键原材料研究

研究制备了高耐热型非固化橡胶沥青防水涂料,重点分析了主辅改性剂及功能性助剂等关键原材料对改性沥青软化点、针入度、延度和黏度的影响,并对关键原材料进行了优选。简要介绍了采用优选关键原材料制备的高耐热型非固化橡胶沥青防水涂料的性能和特点。     

冷涂型非固化橡胶沥青防水涂料关键性能研究及其工程应用

结合目前热熔型非固化橡胶沥青防水涂料存在的不足,通过合理选材及优化配方制得了一种可以常温冷施工的非固化橡胶沥青防水涂料,并对其常温黏度、耐热性、粘结性能、阻燃性等关键性能进行了优化探讨,最终将其成功应用于防水工程中,验证了冷涂型非固化橡胶沥青防水涂料的可行性和实用性。     

各组分添加量对非固化橡胶沥青防水涂料的性能影响研究

非固化橡胶沥青防水涂料具有良好的蠕变性与自愈性,能够与卷材复合使用形成"皮肤式"防水,有效解决窜水难题。以沥青、增黏树脂、助剂、软化油、SBR、填料为主要原料制备了非固化橡胶沥青防水涂料,探讨了各组分添加量对改性料中间体与最终涂料性能的影响。     

高耐热性非固化橡胶沥青防水涂料在建筑屋面上的应用

制备了一种屋面专用高耐热非固化橡胶沥青防水涂料,其黏度、耐热性都得到很大改善。结合自粘聚合物改性沥青防水卷材,该涂料在北京市丰台区某大型住宅屋面工程中得到了成功应用。本文介绍了高耐热非固化橡胶沥青防水涂料的性能特点,详细阐述了其施工工艺。     

非固化橡胶沥青防水涂料的研究进展

非固化橡胶沥青防水涂料因其永久不固化及优良的防水性能得到了快速发展,广泛应用于各大防水修复工程之中。该文从各种组分及改性剂对非固化橡胶沥青防水涂料性能的影响和低温常温非固化沥青两个方面综述了其研发及改性近年来的发展,同时介绍了其在防水修复工程应用领域的发展情况,并指出了非固化橡胶沥青防水涂料研究与应用中存在的问题,展望了其发展趋势和前景。     

共混型低温刮涂非固化橡胶沥青防水涂料的研制

为制备共混型低温刮涂非固化橡胶沥青防水涂料,研究了沥青及改性剂、橡胶、软化剂、填料、树脂等对其性能的影响,并通过黏度论证其施工性,所得的非固化橡胶沥青防水涂料可在60～90℃实现刮涂,在提高施工效率的同时避免了环境污染,且具有优异的防水效果。     

一种环保型非沥青基非固化橡胶防水涂料的研发和生产

制备了一种环保型非沥青基非固化橡胶防水涂料,探讨了配方体系的选材原则和涂料的制备方法。所制得的环保型非沥青基非固化橡胶防水涂料耐热性高达100℃,粘结性好,延伸性高,其生产和应用均绿色环保。     

抑烟剂对阻燃中纤板的燃烧性能影响研究

文章主要就抑烟剂对阻燃中纤板的燃烧性能影响进行了研究,最后研究出了一种低烟毒阻燃中纤板.经测试在阻燃剂添加量30 kg/m3情况下,当复合抑烟剂添加量2％时阻燃中纤板的氧指数为37.5％,UL94点燃续燃时间为3.5 s,阴燃时间为11.2 s,烟密度等级SDR由5.7下降到4.0.经GB8624-2012对阻燃中纤板进行燃烧性能测试,结果表明未发生火焰的横向、纵向蔓延,具有较好的阻燃、成炭性能.     

Flame Retardance and Smoke Suppression of Poly(vinyl chloride) Using Multicomponent Systems

Metal-based organic complexes (MBO) are a class of FRSS additives that comprise a transition metal and an organic ligand that cleaves at an elevated temperature thereby releasing the metal in a reactive state. They help in the formation of char and thus act as an effective smoke suppressant. Use of MBO complexes as flame retardant smoke suppressants, phosphate ester as a flame retardant and active filler as endothermic material is reported here as multicomponent FRSS systems. MBOs used in the present study are the chelates of pentanediono. They were used alone as well as in combination with aluminum trihydrate (ATH) as filler were used to impart flame retardancy and smoke suppression to poly vinylchloride. Their performance was measured in terms of flammability, smoke generation, char formation and evolution of combustion gases. MBOs of molybdenum and chromium were found to be very efficient flame retardant smoke suppressants.     

阻燃型聚合物乳液防水涂料的研究

研究了不同类型聚合物乳液对防水涂料阻燃性能的影响;以氢氧化铝和硼酸锌作为阻燃剂,考察阻燃剂对防水涂料阻燃性能和防水性能的影响。结果表明,选取丙烯酸乳液作为基料,以氢氧化铝和硼酸锌二者复配制得的防水涂料既有良好的阻燃性能,同时也能满足防水性能的要求。     

聚磷酸铵和三氧化钼对聚氨酯软泡阻燃性能的影响

以聚磷酸铵（APP）和三氧化钼（MoO3）为阻燃剂,采用一步发泡法制备阻燃聚氨酯软质泡沫（FPUF）,通过扫描电镜、氧指数仪、热重分析仪和锥形量热仪等测试手段研究了MoO3和APP对聚氨酯软泡的泡孔结构、热稳定性、阻燃性能以及产烟量的影响规律。研究表明：MoO3和APP均能提高聚氨酯软泡的阻燃性能,与纯聚氨酯软泡相比,当APP和MoO3的添加量均为7.5%时,阻燃聚氨酯软泡的总热释放量和总产烟量分别降低了44.2%、66.3%,表现出很好的阻燃和抑烟性能;探讨了APP和MoO3阻燃聚氨酯软泡的阻燃作用机理,APP在气相和凝聚相发挥阻燃作用,在气相中通过生成含磷官能团捕获气相中的自由基,在凝聚相中发挥催化成炭的作用,MoO3能促进热裂解聚氨酯催化成炭,提高成炭率,使炭层致密,并提高聚氨酯软泡的热稳定性,有效提高聚氨酯软泡的火灾安全性。     

Flame Retardant Smoke Suppressant Protection for Poly Vinylchloride

Spread of fire along electrical cables may be alleviated by using flame-retardant smoke suppressant (FRSS) additives-based PVC compositions designed for use as insulation and sheathing. These compositions offer improved resistance to ignition, flame spread and smoke generation. FRSS protection may also be achieved by the application of intumescent coatings as fire-protective layers and barriers for electrical cables and cable installations.Metal-based organic (MBO) complexes were synthesized for use as flame retardant smoke suppressants in PVC formulations. Plasticized PVC compositions were prepared and evaluated for their fire performance. Excellent smoke suppression was observed when either of the two MBOs was used. The limiting oxygen index was also found to be fairly high, particularly when the PVC samples were plasticized with a phosphate plasticizer. Flame-retardant smoke-suppressant intumescent coatings were developed for PVC-sheathed electrical cables. The coatings were applied on cables, and their fire performance was evaluated by using national and international standard procedures. The coated cables did not show any surface spread of flame on exposure and their generation of smoke was found to be very low. The coatings were found to be quite effective in reducing the burning behaviour of power cables. Significant improvement in circuit failure time was noted for coated cable specimens.     

The Effect of Flame Retardant Smoke Suppressants on the Char Morphology of Plasticized PVC

Char formation that preserves the structural integrity of the polymer is one of the most efficient methods of reducing its flammability. Enhanced char formation from polymers such as PVC may also be associated with a decrease in smoke production, as is observed when the polymer is modified by a flame retardant smoke suppressant (FRSS) complex. A correlation had been made between the FRSS characteristics and char morphology. The effect of different flame retardant smoke suppressants on char formation has been highlighted.(UP)     

阻燃型自粘改性沥青防水卷材的研制

采用添加复合阻燃剂的方法制备了阻燃型自粘改性沥青防水卷材,并考察了其氧指数和物理性能。结果表明:阻燃剂对自粘改性沥青防水卷材的物理性能有一定的影响,但其阻燃性能却显著改善。     

Synergistic effects of inorganic tin compounds and Sb2O3 on thermal properties and flame retardancy of flexible poly(vinyl chloride)

The effects of inorganic tin compounds such as zinc hydroxystannate (ZHS), tin dioxide (SnO₂), and tin monoxide (SnO), Sb₂O₃, and their mixtures on the flame retardant and smoke suppressant properties of flexible poly(vinyl chloride) (PVC), and their flame retardant and smoke suppressant actions, were studied using the limiting oxygen index (LOI) test, the smoke density rating (SDR) test, thermogravimetric analysis/differential thermogravimetry/differential thermal analysis (TGA/DTG/DTA), scanning electron microscopy (SEM), and quantitative analysis. The results showed that the incorporation of small amounts of inorganic tin compounds and their mixtures with Sb₂O₃ can increase the LOI of PVC and decrease the SDR during combustion. Partial replacement of Sb₂O₃ in flexible PVC by ZHS resulted in a significant synergistic improvement in flame retardant behavior. TGA/DTG/DTA, SEM, and quantitative analysis showed that ZHS acts as a flame retardant in the solid phase, Zn²⁺ can catalyze dehydrochlorination of PVC and promote early cross-linking, leading to rapid charring, and Sn⁴⁺ can react with the char, thereby increasing the char stability. These actions, combined with the vapor-phase role of Sb₂O₃, can significantly enhance the flame retardancy of PVC.     

碳材料对水性膨胀涂料阻燃抑烟性能的影响

以膨胀石墨（EG）、碳纳米管（CNTs）、富勒烯（C60）、石墨烯（Gr）为填料,研究其在水性膨胀涂料中的阻燃性、热稳定性、抑烟性和耐水性碳材料对水性膨胀涂料防火抑烟性能的影响。用扫描电镜（SEM）、傅立叶变换红外光谱（FTIR）、X 射线衍射（XRD）和粒度分布对碳层进行了表征。结果表明：碳材料可以有效提高水性膨胀涂料的防火性能,受热300 s 时,涂覆防火涂料的板背面温度比无防火涂料的钢板降低了50%,且加入碳材料的防火涂料更能隔热;SP-Gr 的炭层膨胀系数最大,约为未加入碳材料涂料的两倍,且高温加热下加入Gr 的涂料具有最大的炭残余质量;加入碳材料的防火涂料阻烟效果更好,烟密度降低30%以上;加入Gr 的涂料具有最好的耐水性。在水性防火涂料中掺入石墨烯具有最好的性能。     

乳液型膨胀防火涂料的研究（Ⅲ）——影响涂料防火性能的其他因素

研究了填料、抑烟剂、涂覆量对涂料防火性能的影响。结果表明：氧化锌、氧化铝等无机填料不仅能提高发泡层强度,而且能有效地抑制燃烧过程中产生的烟雾。当涂层涂覆量为５００ｇ／ｍ＾２时其防火效果最好。