CN107828349B - 一种复合型自粘防水卷材的制备方法 - Google Patents
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Abstract
本发明公开了一种复合型自粘防水卷材的制备方法。本发明主要包括,将丙烯酸丁酯、丙烯酸异辛酯、甲基丙烯酸甲酯、丙烯酸、丙烯酸羟乙酯、过氧化苯甲酰和溶剂加入反应釜中,搅拌反应得到丙烯酸树脂胶液;将丙烯酸树脂胶液辊涂于聚四氟乙烯薄膜层上侧面上,加热烘干形成丙烯酸树脂层;将环氧树脂、聚酰胺固化剂、聚醚胺固化剂、光屏蔽剂、增塑剂与稀释剂进行共混搅拌,并涂覆于丙烯酸树脂层上侧面,固化成膜形成环氧树脂层;再将有机硅不干胶胶水涂敷于聚四氟乙烯薄膜层下侧面,烘干形成有机硅不干胶粘结层。本发明防水卷材采用多层复合结构,具有良好的防水性、防老化、耐酸碱和耐高温等性能。
Description
技术领域
本发明属于高分子合成与加工领域,具体涉及一种复合型自粘防水卷材的制备方法。
背景技术
防水卷材作为一种工程材料,主要应用于建筑屋顶与墙面、路基工程、地下工程等领域。防水卷材能够避免雨水渗漏、地下水渗透等现象的发生,其在整个工程中起了十分关键作用。在防水卷材领域,沥青型防水卷材与改性沥青防水卷材占整个防水卷材领域比重的80%左右。然而,沥青型防水卷材因为拉伸强度与延伸率低、低温柔性差、使用寿命短等缺点逐渐无法满足实际需求。
高分子防水卷材具有均质性、较高的拉伸强度和良好的低温柔性,还能够通过添加适量的化学助剂和填料改善其机械性能、抗腐蚀性、抗老化等性能。而且,高分子卷材在施工过程中采取冷加工技术,避免了炼制沥青过程中给施工人员和环境带来的危害。
发明内容
本发明的目的在于提供一种复合型自粘防水卷材的制备方法,该方法包括如下步骤:
(1)将60~70质量份丙烯酸丁酯(BA)、15~30质量份丙烯酸异辛酯(2-EHA)、10~20质量份甲基丙烯酸甲酯(MMA)、5质量份丙烯酸(AA)、5质量份丙烯酸羟乙酯(HEA)、1质量份过氧化苯甲酰(BPO)和40质量份溶剂加入反应釜中,在80℃条件下搅拌反应5h得到丙烯酸树脂胶液;
(2)将步骤(1)所制得的丙烯酸树脂胶液辊涂于聚四氟乙烯薄膜层的上侧面上,并于50~60℃加热烘干,形成丙烯酸树脂层;
(3)将100质量份环氧树脂(E-44)、20~25质量份聚酰胺固化剂(650)、20~25质量份聚醚胺固化剂(D400)、1.5~4.5质量份光屏蔽剂、1.5~4.5质量份增塑剂与15~45质量份稀释剂进行共混搅拌20分钟,并涂覆于丙烯酸树脂层的上侧面,于50~60℃条件下固化成膜,形成环氧树脂层;
(4)再将有机硅不干胶胶水涂敷于聚四氟乙烯薄膜层的下侧面,于105~110℃烘干形成有机硅不干胶粘结层;
(5)由上述环氧树脂层、丙烯酸树脂层、聚四氟乙烯薄膜层和有机硅不干胶粘结层共同构成了复合型自粘防水卷材。
具体的,步骤(1)中,溶剂为乙酸乙酯,反应过程中搅拌速率为120r/min。
具体的,步骤(2)中,所述的聚四氟乙烯薄膜层为延压法加工而成,邵氏硬度为70度。
具体的,步骤(3)中,所述光遮蔽剂为粒度325目的炭黑,增塑剂为环氧化植物油,稀释剂为苯基缩水甘油醚。
具体的,步骤(4)中,所述有机硅不干胶胶水为溶剂型胶水,主要成分为有机硅不干胶树脂,固含量为35%,粘度为1~2帕﹒秒。
具体的,步骤(5)中,环氧树脂层厚度为0.40~0.50mm,丙烯酸树脂层厚度为0.30~0.45mm,聚四氟乙烯薄膜层厚度为0.70~0.90mm,有机硅不干胶粘结层厚度为0.10~0.12mm;防水卷材的总厚度为1.50~1.97mm,宽幅控制为1.00m。
本发明防水卷材与传统的聚合物防水卷材相比,具有如下优点:
(1)本发明防水卷材采用多层复合结构,以聚四氟乙烯薄膜为主要防水层。因聚四氟乙烯具有良好的防水性、防老化、耐酸碱和耐高温等性能,这将很好地提高防水卷材的使用寿命。
(2)本发明防水卷材表面涂覆了一层环氧树脂层,环氧树脂具有耐酸碱腐蚀、耐摩擦、抗老化等特点,也能够提高防水卷材的使用寿命。
具体实施方式
下面通过具体实施例来对本发明作进一步详细的描述,其中,所述原料均为工业化产品,设备为普通工业化的生产设备。
实施例1:
将60kg丙烯酸丁酯(BA)、30kg丙烯酸异辛酯(2-EHA)、10kg甲基丙烯酸甲酯(MMA)、5kg丙烯酸(AA)、5kg丙烯酸羟乙酯(HEA)和1kg过氧化苯甲酰(BPO)和40kg乙酸乙酯加入反应釜中,于80℃条件下搅拌反应5h得到丙烯酸树脂胶液,再将反应得到的丙烯酸树脂胶液均匀辊涂于0.70mm厚度的聚四氟乙烯薄膜层上侧面,并恒温50℃加热烘干制得0.30mm厚度的丙烯酸树脂层;将100kg环氧树脂(E-44)、20kg聚酰胺固化剂(650)和20kg聚醚胺固化剂(D400)、1.5kg粒度325目的炭黑、1.5kg环氧化植物油、15kg苯基缩水甘油醚混合搅拌20分钟,并涂覆于丙烯酸树脂层上侧面,于50℃条件固化成0.40mm厚度的环氧树脂层;最后将有机硅不干胶胶水涂敷于聚四氟乙烯薄膜层下侧面,于105℃条件下烘干形成0.10mm厚度的有机硅胶不干胶粘结层,即制得一种复合型自粘防水卷材。
本实施例中,丙烯酸树脂胶液制备过程中搅拌速率为120r/min;聚四氟乙烯薄膜层为延压法加工而成,邵氏硬度为70度;有机硅不干胶胶水为溶剂型胶水,主要成分为有机硅不干胶树脂,固含量为35%,粘度为1~2帕﹒秒;防水卷材总厚度为1.50mm,宽幅控制为1.00m。
实施例2:
将65kg丙烯酸丁酯(BA)、15kg丙烯酸异辛酯(2-EHA)、20kg甲基丙烯酸甲酯(MMA)、5kg丙烯酸(AA)、5kg丙烯酸羟乙酯(HEA)和1kg过氧化苯甲酰(BPO)和40kg乙酸乙酯加入反应釜中,于80℃条件下搅拌反应5h得到丙烯酸树脂胶液,再将反应得到的丙烯酸树脂胶液均匀辊涂于0.80mm厚度的聚四氟乙烯薄膜层上侧面,并恒温50℃加热烘干制得0.35mm厚度的丙烯酸树脂层;将100kg环氧树脂(E-44)、22kg聚酰胺固化剂(650)和22kg聚醚胺固化剂(D400)、2.5kg粒度325目的炭黑、2.5kg环氧化植物油、25kg苯基缩水甘油醚混合搅拌20分钟,并涂覆于丙烯酸树脂层上侧面,于50℃条件固化成0.43mm厚度的环氧树脂层;最后将有机硅不干胶胶水涂敷于聚四氟乙烯薄膜层下侧面,烘干形成0.11mm厚度的有机硅胶不干胶粘结层,即制得一种复合型自粘防水卷材。
本实施例中,丙烯酸树脂胶液制备过程中搅拌速率为120r/min;聚四氟乙烯薄膜层为延压法加工而成,邵氏硬度为70度;有机硅不干胶胶水为溶剂型胶水,主要成分为有机硅不干胶树脂,固含量为35%,粘度为1~2帕﹒秒;防水卷材总厚度为1.69mm,宽幅控制为1.00m。
实施例3:
将62kg丙烯酸丁酯(BA)、25kg丙烯酸异辛酯(2-EHA)、13kg甲基丙烯酸甲酯(MMA)、5kg丙烯酸(AA)、5kg丙烯酸羟乙酯(HEA)和1kg过氧化苯甲酰(BPO)和40kg溶剂加入反应釜中,于80℃条件下搅拌反应5h得到丙烯酸树脂胶液,再将反应得到的丙烯酸树脂胶液均匀辊涂于0.80mm厚度的聚四氟乙烯薄膜层上侧面,并恒温60℃加热烘干制得0.40mm厚度的丙烯酸树脂层;将100kg环氧树脂(E-44)、24kg聚酰胺固化剂(650)和24kg聚醚胺固化剂(D400)、3.5kg粒度325目的炭黑、3.5kg环氧化植物油、35kg基缩水甘油醚混合搅拌20分钟,并涂覆于丙烯酸树脂层上侧面,于60℃条件固化成0.47mm厚度的环氧树脂层;最后将有机硅不干胶胶水涂敷于聚四氟乙烯薄膜层下侧面,烘干形成0.11mm厚度的有机硅胶不干胶粘结层,即制得一种复合型自粘防水卷材。
本实施例中,丙烯酸树脂胶液制备过程中搅拌速率为120r/min;聚四氟乙烯薄膜层为延压法加工而成,邵氏硬度为70度;有机硅不干胶胶水为溶剂型胶水,主要成分为有机硅不干胶树脂,其固含量为35%,粘度为1~2帕﹒秒;防水卷材总厚度为1.78mm,宽幅控制为1.00m。
实施例4:
将70kg丙烯酸丁酯(BA)、15kg丙烯酸异辛酯(2-EHA)、15kg甲基丙烯酸甲酯(MMA)、5kg丙烯酸(AA)、5kg丙烯酸羟乙酯(HEA)和1kg过氧化苯甲酰(BPO)和40kg乙酸乙酯加入反应釜中,于80℃条件下搅拌反应5h得到丙烯酸树脂胶液,再将反应得到的丙烯酸树脂胶液均匀辊涂于0.90mm厚度的聚四氟乙烯薄膜层上侧面,并恒温60℃加热烘干制得0.45mm厚度的丙烯酸树脂层;将100kg环氧树脂(E-44)、25kg聚酰胺固化剂(650)和25kg聚醚胺固化剂(D400)、4.5kg粒度325目的炭黑、4.5kg环氧化植物油、45kg苯基缩水甘油醚混合搅拌20分钟,并涂覆于丙烯酸树脂层上侧面,于60℃条件固化成0.50mm厚度的环氧树脂层;最后将有机硅不干胶胶水涂敷于聚四氟乙烯薄膜层下侧面,烘干形成0.12mm厚度的有机硅胶不干胶粘结层,即制得一种复合型自粘防水卷材。
本实施例中,丙烯酸树脂胶液制备过程中搅拌速率为120r/min;聚四氟乙烯薄膜层为延压法加工而成,邵氏硬度为70度;有机硅不干胶胶水为溶剂型胶水,主要成分为有机硅不干胶树脂,其固含量为35%,粘度为1~2帕﹒秒;防水卷材总厚度为1.97mm,宽幅控制为1.00m。
Claims (6)
1.一种复合型自粘防水卷材的制备方法,其特征在于包括如下步骤:
(1)将60~70质量份丙烯酸丁酯(BA)、15~30质量份丙烯酸异辛酯(2-EHA)、10~20质量份甲基丙烯酸甲酯(MMA)、5质量份丙烯酸(AA)、5质量份丙烯酸羟乙酯(HEA)、1质量份过氧化苯甲酰(BPO)和40质量份溶剂加入反应釜中,在80℃条件下搅拌反应5h得到丙烯酸树脂胶液;
(2)将步骤(1)所制得的丙烯酸树脂胶液辊涂于聚四氟乙烯薄膜层的上侧面上,并于50~60℃加热烘干,形成丙烯酸树脂层;
(3)将100质量份环氧树脂E-44、20~25质量份聚酰胺固化剂650、20~25质量份聚醚胺固化剂D400、1.5~4.5质量份光屏蔽剂、1.5~4.5质量份增塑剂与15~45质量份稀释剂进行共混搅拌20分钟,并涂覆于丙烯酸树脂层的上侧面,于50~60℃条件下固化成膜,形成环氧树脂层;
(4)再将有机硅不干胶胶水涂敷于聚四氟乙烯薄膜层的下侧面,于105~110℃烘干形成有机硅不干胶粘结层;
(5)由上述环氧树脂层、丙烯酸树脂层、聚四氟乙烯薄膜层和有机硅不干胶粘结层共同构成了复合型自粘防水卷材。
2.根据权利要求1所述的复合型自粘防水卷材的制备方法,其特征在于:步骤(1)中,溶剂为乙酸乙酯,反应过程中搅拌速率为120r/min。
3.根据权利要求1所述的复合型自粘防水卷材的制备方法,其特征在于:步骤(2)中,所述的聚四氟乙烯薄膜层为延压法加工而成,邵氏硬度为70度。
4.根据权利要求1所述的复合型自粘防水卷材的制备方法,其特征在于:步骤(3)中,所述光屏蔽剂为粒度325目的炭黑,增塑剂为环氧化植物油,稀释剂为苯基缩水甘油醚。
5.根据权利要求1所述的复合型自粘防水卷材的制备方法,其特征在于:步骤(4)中,所述有机硅不干胶胶水为溶剂型胶水,主要成分为有机硅不干胶树脂,固含量为35%,粘度为1~2帕﹒秒。
6.根据权利要求1所述的复合型自粘防水卷材的制备方法,其特征在于:步骤(5)中,环氧树脂层厚度为0.40~0.50mm,丙烯酸树脂层厚度为0.30~0.45mm,聚四氟乙烯薄膜层厚度为0.70~0.90mm,有机硅不干胶粘结层厚度为0.10~0.12mm;防水卷材的总厚度为1.50~1.97mm,宽幅控制为1.00m。
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