CN112888727A - 减缓变色的吊顶板和瓷砖 - Google Patents
减缓变色的吊顶板和瓷砖 Download PDFInfo
- Publication number
- CN112888727A CN112888727A CN201980068757.5A CN201980068757A CN112888727A CN 112888727 A CN112888727 A CN 112888727A CN 201980068757 A CN201980068757 A CN 201980068757A CN 112888727 A CN112888727 A CN 112888727A
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- Prior art keywords
- binder composition
- insulation product
- fibrous insulation
- alkali metal
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
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- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
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- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 229940057950 sodium laureth sulfate Drugs 0.000 description 1
- KSAVQLQVUXSOCR-UHFFFAOYSA-M sodium lauroyl sarcosinate Chemical compound [Na+].CCCCCCCCCCCC(=O)N(C)CC([O-])=O KSAVQLQVUXSOCR-UHFFFAOYSA-M 0.000 description 1
- 229940045885 sodium lauroyl sarcosinate Drugs 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 229910001495 sodium tetrafluoroborate Inorganic materials 0.000 description 1
- UGTZMIPZNRIWHX-UHFFFAOYSA-K sodium trimetaphosphate Chemical compound [Na+].[Na+].[Na+].[O-]P1(=O)OP([O-])(=O)OP([O-])(=O)O1 UGTZMIPZNRIWHX-UHFFFAOYSA-K 0.000 description 1
- SXHLENDCVBIJFO-UHFFFAOYSA-M sodium;2-[2-(2-dodecoxyethoxy)ethoxy]ethyl sulfate Chemical compound [Na+].CCCCCCCCCCCCOCCOCCOCCOS([O-])(=O)=O SXHLENDCVBIJFO-UHFFFAOYSA-M 0.000 description 1
- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
- 239000001593 sorbitan monooleate Substances 0.000 description 1
- 235000011069 sorbitan monooleate Nutrition 0.000 description 1
- 229940035049 sorbitan monooleate Drugs 0.000 description 1
- 239000001570 sorbitan monopalmitate Substances 0.000 description 1
- 235000011071 sorbitan monopalmitate Nutrition 0.000 description 1
- 229940031953 sorbitan monopalmitate Drugs 0.000 description 1
- 239000001587 sorbitan monostearate Substances 0.000 description 1
- 235000011076 sorbitan monostearate Nutrition 0.000 description 1
- 229940035048 sorbitan monostearate Drugs 0.000 description 1
- 239000001589 sorbitan tristearate Substances 0.000 description 1
- 235000011078 sorbitan tristearate Nutrition 0.000 description 1
- 229960004129 sorbitan tristearate Drugs 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000012258 stirred mixture Substances 0.000 description 1
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical class [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- GEKDEMKPCKTKEC-UHFFFAOYSA-N tetradecane-1-thiol Chemical compound CCCCCCCCCCCCCCS GEKDEMKPCKTKEC-UHFFFAOYSA-N 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- UDEJEOLNSNYQSX-UHFFFAOYSA-J tetrasodium;2,4,6,8-tetraoxido-1,3,5,7,2$l^{5},4$l^{5},6$l^{5},8$l^{5}-tetraoxatetraphosphocane 2,4,6,8-tetraoxide Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P1(=O)OP([O-])(=O)OP([O-])(=O)OP([O-])(=O)O1 UDEJEOLNSNYQSX-UHFFFAOYSA-J 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- AYNNSCRYTDRFCP-UHFFFAOYSA-N triazene Chemical compound NN=N AYNNSCRYTDRFCP-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
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- 239000012855 volatile organic compound Substances 0.000 description 1
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- 238000009736 wetting Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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Abstract
提供一种纤维隔热产品,其包括含有通过含水粘合剂组合物粘合在一起的多根纤维的非织造纤维垫,所述含水粘合剂组合物包含:可热降解多元醇;交联剂;和酸/醛清除剂。所述粘合剂组合物不添加甲醛。
Description
相关申请的交叉引用
本申请要求2018年9月24日提交的美国临时申请No.62/735,424的优先权和其它权益,其在此作为参考全文引入。
背景
纤维隔热建筑板通常通过使聚合物、玻璃或其它矿物材料的熔融组合物纤维化形成细纤维并在收集输送带上沉积所述纤维形成垫子或毯子而制备。矿物纤维如玻璃纤维或矿物棉通常用于隔热产品。然后施用粘合剂组合物将所述纤维粘合在一起,使它们彼此接触。在制备过程中,形成一些隔热产品和进行切割以提供通常确定好的与标准建筑实践相容的尺寸,如宽度和/或长度适合于具体建筑实践的吊顶板。吊顶板产品也可以在至少一个主表面上结合面层或表面材料,以形成吊顶板或面板。在一些应用中,面层可以是美学或装饰性表面,并且通常涂漆。
吊顶板通常对建筑内部赋予结构和美学价值,同时吸收和衰减声音。吊顶板可用于要控制噪音的区域如公共区域,也可用于居民建筑。
用于生产玻璃纤维隔热产品的传统粘合剂组合物包含苯酚-甲醛(PF)基粘合剂组合物以及填充有脲的PF树脂(PUF树脂)。工业隔热产品如吊顶板、管道板、管道包、管道内衬等应用苯酚-甲醛粘合剂技术来生产便宜并且具有可接受的物理和机械性能的高密度产品。但甲醛粘合剂在玻璃纤维隔热产品生产过程中产生不希望的释放物。
作为甲醛基粘合剂的替代物,已经开发了一些不添加甲醛(“NAF”)或无甲醛的配方来用作玻璃纤维隔热产品的粘合剂。但开发合适替代物的一个挑战是确定所述配方的机械和物理性能与甲醛基粘合剂相当,同时避免一些不希望性能如变色。其它挑战通常包括热/湿性能、刚性、粘合强度、可加工性(切割、磨砂和镶边)及获得不变黄的浅色。
例如,吊顶板通常具有至少一个粘在其上的底布,该底布可能涂有白色或其它颜色的漆。已经发现使用NAF或无甲醛粘合剂形成的白色吊顶板在贮存时倾向于随时间变黄。因此,如果使用由不同板材形成的瓷砖,面板可能不能提供均匀的颜色。
另外,在高湿度条件下保持吊顶面板的刚性和强度仍是吊顶板业的一大问题。由于用于吊顶的瓷砖和板材只在周边有支撑,因此这一问题很严重。湿度会使板材弱化,而且由于周边支撑有限,板材会不可接受地下垂。
因此,需要用于生产隔热产品、特别是吊顶板的粘合剂组合物,这种粘合剂组合物不易变黄和变色,对环境友好,不添加甲醛或无甲醛,同时在湿度条件下保持希望的刚性和强度。
发明内容
本发明概念的各种示例性实施方案涉及纤维隔热产品,其包括含有通过含水粘合剂组合物粘合在一起的多根纤维的非织造纤维垫,所述含水粘合剂组合物包含可热降解多元醇、交联剂和选自如下的酸/醛清除剂:碱金属氢氧化物、碱土金属氢氧化物、碱金属碳酸盐和碱金属碳酸氢盐、铵和/或碱金属磷酸盐、单-、二-和多-伯胺、仲胺或叔胺、芳族胺、酰胺和内酰胺及亚硫酸盐。所述粘合剂组合物不添加甲醛。
在一些示例性实施方案中,所述交联剂包括丙烯酸的均聚物或共聚物,所述可热降解多元醇选自聚乙烯醇和聚乙烯基乙酸酯。在一些示例性实施方案中,所述可热降解多元醇在粘合剂组合物中的存在量可以为约3.0-30.0wt%固体。
在一些示例性实施方案中,所述含水粘合剂组合物还包含分子量小于1000道尔顿的一种或多种短链多元醇和碳水化合物基多元醇。所述碳水化合物基多元醇可以包括选自如下的糖醇:甘油、赤藓糖醇、阿拉伯糖醇、木糖醇、山梨醇、麦芽糖醇、甘露醇、艾杜醇、异麦芽糖醇、乳糖醇、纤维素二糖醇、异麦芽酮糖醇、麦芽三糖醇、它们的糖浆和它们的混合物。
在一些示例性实施方案中,所述交联剂在所述粘合剂组合物中的存在量为约50-85wt%固体。在一些示例性实施方案中,所述酸/醛清除剂在所述粘合剂组合物中的存在量为约0.5-15wt%总固体。
本发明概念的各种示例性实施方案涉及纤维隔热产品,其包括含有通过含水粘合剂组合物粘合在一起的多根纤维的非织造纤维垫,所述含水粘合剂组合物包含可热降解多元醇、交联剂和选自如下的有机或无机碱:氨、烷基取代的胺、二甲胺、乙基甲基胺、氢氧化钠、氢氧化钾、碳酸钠和叔丁基氢氧化铵。所述粘合剂组合物不添加甲醛。
在一些示例性实施方案中,所述交联剂包括丙烯酸的均聚物或共聚物,和所述可热降解多元醇选自聚乙烯醇和聚乙烯基乙酸酯。在一些示例性实施方案中,所述可热降解多元醇在所述粘合剂组合物中的存在量可以为约3.0-30.0wt%固体。
在一些示例性实施方案中,所述含水粘合剂组合物还包含分子量小于1000道尔顿的一种或多种短链多元醇和碳水化合物基多元醇。所述碳水化合物基多元醇可以包括选自如下的糖醇:甘油、赤藓糖醇、阿拉伯糖醇、木糖醇、山梨醇、麦芽糖醇、甘露醇、艾杜醇、异麦芽糖醇、乳糖醇、纤维素二糖醇、异麦芽酮糖醇、麦芽三糖醇、它们的糖浆和它们的混合物。
在一些示例性实施方案中,所述交联剂在所述粘合剂组合物中的存在量为约50-85wt%固体。在一些示例性实施方案中,所述酸/醛清除剂在所述粘合剂组合物中的存在量为约0.5-15wt%总固体。
在一些示例性实施方案中,所述粘合剂组合物的pH为约2.7-4.7。
本发明概念的各种示例性实施方案涉及包括具有第一面和与第一面相对的第二面的非织造纤维垫的吊顶板。所述非织造垫包括通过至少部分固化的含水粘合剂组合物粘合在一起的多根纤维,所述含水粘合剂组合物包含可热降解多元醇和交联剂。所述非织造垫的第一面和第二面中的至少一个至少部分用选自如下的酸/醛清除剂涂覆:碱金属氢氧化物;碱土金属氢氧化物;碱金属碳酸盐和碱金属碳酸氢盐;铵和/或碱金属磷酸盐;单、二和多-伯胺;仲或叔胺;芳族胺;酰胺和内酰胺;和亚硫酸盐。
在一些示例性实施方案中,所述酸/醛清除剂为干粉形式。以吊顶板重量计,所述酸/醛清除剂的添加量可以为至多2.0wt%固体。
本发明概念的各种示例性实施方案涉及包括芯的吊顶瓷砖,所述芯包括具有第一面和与第一面相对的第二面的非织造纤维垫。所述非织造纤维包括通过不含甲醛的粘合剂组合物粘合在一起的多根纤维和粘合到第一面和第二面之一上的至少一个面层,所述面层为白色或浅色。所述不含甲醛的粘合剂组合物包含可热降解多元醇、交联剂和选自如下的酸清除剂:碱金属氢氧化物;碱土金属氢氧化物;碱金属碳酸盐和碱金属碳酸氢盐;铵和/或碱金属磷酸盐;单、二和多-伯胺;仲或叔胺;芳族胺;酰胺和内酰胺;和亚硫酸盐。当暴露于热、湿环境或老化时,应用CIELAB方法按L*a*b*坐标系测量,所述吊顶瓷砖的Δb*偏差小于1。
本发明概念的各种示例性实施方案涉及用于减缓吊顶瓷砖变色的方法,其包括生产具有第一面和与第一面相对的第二面的玻璃纤维隔热板,所述玻璃纤维隔热板包括通过含水粘合剂组合物粘合在一起的多根玻璃纤维,至少部分固化所述玻璃纤维隔热板,和向第一面和第二面中的至少一个上粘附面层。所述不含甲醛的粘合剂组合物包含可热降解多元醇、交联剂和选自如下的酸清除剂:碱金属氢氧化物;碱土金属氢氧化物;碱金属碳酸盐和碱金属碳酸氢盐;铵和/或碱金属磷酸盐;单、二和多-伯胺;仲或叔胺;芳族胺;酰胺和内酰胺;和亚硫酸盐。
基于如下示例性实施方案的详细描述和所给出的附图,可更容易理解本发明总体概念的许多其它方面、优点和/或特征。
附图说明
下面通过示例方式参考附图更详细地描述本发明的总体概念及其示例性实施方案和优点,其中:
图1图示了随粘合剂pH增加,非织造纸样在环境条件下的拉伸强度。
图2图示了随粘合剂pH增加,非织造纸样在热/湿条件下的拉伸强度。
图3图示了不用这里公开的变黄减缓方案时应用粘合剂组合物形成的板和非织造滤布所证实的Δb*偏差。
图4图示了应用这里公开的NAF粘合剂组合物制备的非织造滤布所证实的Δb*偏差,其中改变添加到未固化的NAF粘合剂组合物中的三水合氧化铝(“ATH”)的浓度。
图5图示了应用各种NAF粘合剂组合物制备的非织造滤布所证实的Δb*偏差。
具体实施方式
除非另有定义,否则这里使用的所有技术和科学术语均具有本领域普通技术人员通常理解的相同含义,所述领域即为这些示例性实施方案所属领域。本说明书中使用的术语仅用于描述示例性实施方案和不用于限制示例性实施方案。因此,本发明的总体概念不限于这里描述的具体实施方案。虽然在实施或测试本发明时也可能应用与这里描述的类似或等价的其它方法和材料,但这里描述的是优选方法和材料。
正如本说明书和所附权利要求中所应用的,除非上下文明确指出,否则单数形式的不定冠词和定冠词也包括复数形式。
除非另有说明,本说明书和权利要求中使用的所有表示组分量、化学和分子性质、反应条件等的所有数值均应理解为在所有情况下均由“约”修饰。术语“约”指在其值+/-10%范围内,或在某些情况下,在其值+/-5%范围内,和在某些情况下,在其值+/-1%范围内。
因此,除非有相反表示,在本说明书和和所附权利要求中描述的数值参数均是近似值,其可根据示例性实施方案所寻求的期望属性而变化。至少每个数值参数均应根据有效数字个数和通常圆整方式进行理解。
尽管描述示例性实施方案的宽的数值范围和参数是近似值,但在具体实施例中描述的数值已尽可能精确记录。但任何数值都固有地包括在各自测试测量中发现的由标准偏差引起的某些必然误差。本说明书和权利要求中给出的每一个数值范围均包括在所述较宽数值范围内的每一个更窄数值范围,就如所述更窄数值范围已在这里明确写出。
本发明的概念涉及纤维隔热产品,如由其形成的吊顶板和吊顶瓷砖,这些产品通常由通过固化热固性聚合物粘合剂材料粘合在一起的众多纤维形成。所述纤维产品可以包括无机纤维、有机纤维或它们的混合物。合适的无机纤维的实例包括玻璃纤维、羊毛玻璃纤维和陶瓷纤维。任选地,除了无机纤维外,在隔热产品中还可以存在其它增强纤维,如天然纤维和/或合成纤维,例如聚酯、聚乙烯、聚对苯二甲酸乙二酯、聚丙烯、聚酰胺、芳纶和/或聚芳纶纤维。与本发明结合使用的术语“天然纤维”指指从植物任何部分提取的植物纤维,包括但不限于茎、种子、叶、根或韧皮部。适合用作增强纤维材料的天然纤维的实例包括玄武岩、棉花、黄麻、竹子、苎麻、甘蔗渣、大麻、椰壳、亚麻、红麻、剑麻、亚麻、灰叶剑麻以及它们的组合。隔热产品可以全部由一类纤维形成,或者它们可以由多类纤维组合形成。例如,取决于所需隔热用途,隔热产品可以由各类玻璃纤维组合形成或由不同无机纤维和/或天然纤维的不同组合形成。
虽然各类纤维隔热产品及其制造方法是已知的,但生产玻璃纤维或矿物隔热产品的实例通过熔融玻璃或其它矿物材料的旋转纤维化在连续方法中实施。然后鼓风机引导纤维至传送带形成纤维组件。纤维用粘合剂组合物和任选的水喷洒,从而粘合剂组合物基本均匀地分布在所形成的隔热组件中。
可以收集具有粘附在其上的未固化树脂粘合剂的纤维,并形成未固化的隔热组件,和在成型传送带上压缩至想要的单位面积重量。真空抽吸使空气从成型传送带下方流过纤维组件,同时进一步压缩隔热组件。在成型操作期间,在玻璃纤维离开成型室之前,来自玻璃纤维和流经纤维组件的空气流的余热通常足以使粘合剂的大部分水和任选的水雾挥发,从而使粘合剂的剩余组分作为粘性或半粘性高固含量液体留在纤维上。
然后将隔热组件在部分压缩状态下引入固化炉。然后压缩至顶部和底部烘箱链条之间的想要厚度,同时在足以固化粘合剂的温度下流过固化炉,以实现构成主体的多根玻璃纤维的尺寸和质量稳定性。固化炉可以在约100-325℃或约175-300℃的温度下操作。可将强制空气吹过隔热组件以推进粘合剂固化,并排出残余水分或固化期间形成的缩合产物。隔热组件可在烘箱内保持足够时间以交联(固化)粘合剂并形成隔热板。可通过切割设备将隔热板切成预定长度并随后储存。
然后可将增强材料或底布粘附在隔热板上以形成吊顶瓷砖。合适薄麻布材料的非限定性实例包括织造或非织造玻璃纤维垫、牛皮纸、铝箔底布牛皮纸层压板、再生纸和压延纸。增强材料可通过本领域常规使用的任何粘合剂或粘合材料粘附到隔热板表面。合适的粘合剂包括可涂覆或施用于增强材料的粘合剂、聚合树脂、沥青和含沥青材料。
隔热产品可以包括高密度隔热产品,包括用不添加甲醛(“NAF”)的含水粘合剂组合物制造的吊顶板和面板,与利用传统的NAF或不含甲醛的粘合剂组合物制备的产品相比,这些隔热产品具有相当的或改进的机械和物理性能,包括在下游应用中变黄减缓或无变黄。
在一些示例性实施方案中,所述NAF含水粘合剂组合物包含至少一种可热降解多元醇。“可热降解多元醇”指在低于300℃的温度下、特别是在酸性条件下发生降解形成水、挥发性羧酸和/或含羰基化合物的多元醇。示例性的可热降解多元醇包括聚合的多羟基化合物,如聚乙烯醇、聚乙烯基乙酸酯(其可部分或完全水解)或它们的混合物。示例性地,当部分水解的聚乙烯基乙酸酯用作多羟基组分时,可以应用80-89%水解的聚乙烯基乙酸酯,例如385(Kuraray America,Inc.)和SevolTM 502(Sekisui SpecialtyChemicals America,LLC),两者均水解约85%(385)和88%(SelvolTM 502)。
可热降解多元醇化合物在含水粘合剂组合物中的存在量可以为至多30wt%总固体,包括但不限于至多约28%、25%、20%、18%、15%和13wt%总固体。在一些示例性实施方案中,聚合的多羟基化合物在含水粘合剂组合物中的存在量为3.0-30wt%总固体,包括但不限于5-25wt%、8-20wt%、9-18wt%和10-16wt%总固体。
NAF含水粘合剂组合物可任选包含一种或多种交联剂。交联剂可以为适合于交联聚合性多羟基化合物的任何化合物。在示例性的实施方案中,交联剂的数均分子量大于90道尔顿、约90-40,000道尔顿、或约1000-25,000道尔顿、或约7,000-23,000道尔顿、或约5,000-15,000道尔顿。在一些示例性实施方案中,交联剂的数均分子量为约2,000-15,000道尔顿、或约3,000-10,000道尔顿。合适交联剂的非限定性实例包括具有一个或多个羧酸基(-COOH)的物质,如多羧酸(及其盐)、酸酐、含有酸酐的单体和聚合性多羧酸(即混合的酸酐),以及丙烯酸的均聚物或共聚物,如聚丙烯酸(及其盐)和聚丙烯酸基树脂如QR-1629S和Acumer 9932,后两者均可由Dow Chemical Company商购获得。Acumer 9932是分子量为约4000和次磷酸钠含量为6-7wt%的聚丙烯酸/次磷酸钠树脂。QR-1629S为聚丙烯酸/甘油的混合物。其它示例性交联剂包括单羧酸,如马来酸、柠檬酸等。
在某些情况下,交联剂可以用中和剂预中和。所述中和剂可以包括:有机和/或无机碱,如氢氧化钠、氢氧化铵和二乙胺,以及任何种类的伯胺、仲胺或叔胺(包括烷醇胺)。在各种示例性实施方案中,所述中和剂可以包括氢氧化钠和三乙醇胺中的至少一种。
在一些示例性实施方案中,如果存在,以含水粘合剂组合物的总固体含量计,交联剂在含水粘合剂组合物中的存在量为至少50wt%,包括但不限于至少55wt%、至少60wt%、至少63wt%、至少65wt%、至少70wt%、至少73wt%、至少75wt%、至少78wt%和至少80wt%。在一些示例性实施方案中,以含水粘合剂组合物的总固体含量计,主交联剂在含水粘合剂组合物中的存在量为约50-85wt%,包括但不限于约60-80wt%、约62-78wt%和约65-75wt%。
NAF含水粘合剂组合物可进一步包括分子量小于1000道尔顿的短链多元醇或碳水化合物基多元醇如糖醇。糖醇应理解为指当糖的醛基或酮基被还原(例如通过加氢)为相应的羟基时获得的化合物。起始的糖可以选自单糖、低聚糖和多糖以及如糖浆、糖蜜和淀粉水解物的那些产品的混合物。起始的糖也可以是糖的脱水形式。虽然糖醇与相应的起始糖非常相似,但它们不是糖。因此例如糖醇没有还原能力,不能参与还原糖的典型Maillard反应。在一些示例性实施方案中,所述糖醇包括甘油、赤藓糖醇、阿拉伯糖醇、木糖醇、山梨醇、麦芽糖醇、甘露醇、艾杜醇、异麦芽糖醇、乳糖醇、纤维素二糖醇、异麦芽酮糖醇、麦芽三糖醇、异山梨醇、它们的糖浆和它们的混合物。在各种示例性实施方案中,所述糖醇选自甘油、山梨醇、木糖醇和它们的混合物。在一些示例性实施方案中,所述糖醇为二醇或乙二醇。
在一些示例性实施方案中,所述碳水化合物基多元醇在含水粘合剂组合物中的存在量为至多30wt%总固体,包括但不限于至多约25%、20%、18%、15%、13%、11%和10wt%总固体。在一些示例性实施方案中,短链多元醇在含水粘合剂组合物中的存在量为0-30wt%总固体,包括但不限于2-30%、3-25%、5-20%、8-18%和9-15wt%总固体。
在隔热板生产工艺或在第二步中,可将增强材料或底布粘附到隔热板上以形成吊顶瓷砖。合适的底布材料的非限定性实例包括织造或非织造玻璃纤维垫、玻璃纤维或聚酯或玻璃纤维和聚酯的混合物的面层或垫、玻璃纤维、合成纤维或玻璃和合成纤维组合的组织、牛皮纸、铝箔底布牛皮纸层压板、再生纸、压延纸、布和毛毡。示例性面层包括干铺或湿铺的玻璃面层和含有随机分散的聚合性或掺混的玻璃和聚合性纤维的面层。聚合性纤维包括聚酯和聚酰胺或聚烯烃纤维。合成纤维可以包括聚酯、聚酰胺、芳纶、聚烯烃或碳纤维。增强材料可通过本领域常规使用的任何粘合剂或粘合材料粘附到隔热板表面。合适的粘合剂包括粘合剂、粘合剂乳液、聚合树脂、沥青和可涂覆或施用于增强材料上的含沥青材料。
在随后的步骤中,对粘附在隔热板上的增强材料或底布进行涂漆并干燥。通常应用乳胶漆。在非限定性实例中,乳胶漆为白色。
已经发现,应用一些不含甲醛或NAF粘合剂组合物制造的高密度隔热产品如吊顶瓷砖,当将底布粘附在吊顶板上且使所得吊顶板暴露于高温或被储存时,会出现变黄和/或变色。虽然不打算被理论所局限,据信当隔热板或所生产的吊顶瓷砖在固化、干燥或储存过程中暴露于高温时,可热降解多元醇化合物开始降解并排出尾气,该尾气与涂漆底布发生反应,造成变黄变色。已经发现有各种因素会导致可热降解化合物的降解,包括固化温度、固化时间和粘结剂的pH值。
在一些示例性实施方案中,隔热产品的密度为约1.5-10磅/立方英尺(pcf)。在一些示例性实施方案中,隔热产品的密度为约2-9pcf,包括约2.8-8.5pcf和约2.5-7pcf。
因此,已经令人惊奇地发现了几种减缓变黄的方案,用于控制这种隔热产品的变黄和/或变色。所述减缓变黄的一种方案包括控制NAF粘合剂组合物的pH,其使可热降解化合物稳定并减少或消除所得吊顶瓷砖的变色。虽然粘合剂组合物需要在酸性环境中固化,但已经发现粘合剂组合物的pH值可在一定程度上增加,从而在不影响所述板性能特性的条件下减小多元醇的下游降解。pH值的增加减缓了易发生重排和形成羰基的多元醇脱水和酸催化氧化分解反应的反应速率,这些反应会导致挥发性有机化合物的形成,其可能具有酸性或羰基官能度,从而导致油漆变黄。
在一些示例性实施方案中,通过向未固化粘合剂组合物中加入酸和/或醛清除剂来控制NAF粘合剂组合物的pH值。示例性的酸/醛清除剂包括:碱金属氢氧化物,包括氢氧化钠(NaOH)、氢氧化钾(KOH)、氢氧化锂(LiOH);碱土金属氢氧化物,包括氢氧化钙(Ca(OH)2)和氢氧化镁(Mg(OH)2);碱金属碳酸盐和碱金属碳酸氢盐如Na2CO3、K2CO3、NaHCO3和KHCO3;和/或碱金属磷酸盐,如Na3PO4、Na2HPO4、单、二和多-伯胺,如丁基胺、己二胺、Jeffamine T-403、1,3-二(氨基甲基)苯、四亚乙基五胺;仲或叔胺,如二乙醇胺和三乙醇胺;芳族胺,如苯甲酰胺,包括2-氨基苯甲酰胺;酰胺和内酰胺,如丙酰胺、己内酰胺、丙二酰胺和水杨酰胺;羟基碳酸铝和三水合氧化铝;和亚硫酸盐。在一些示例性实施方案中,醛清除剂包括碱金属氢氧化物或2-氨基苯甲酰胺。
在一些示例性实施方案中,酸/醛清除剂在NAF含水粘合剂组合物中的存在量为至多15wt%总固体,包括但不限于约0.5-15wt%总固体;约1-10wt%总固体;约1.5-5wt%总固体。
在一些示例性实施方案中,通过向粘合剂组合物中加入有机和/或无机碱以增加粘合剂的pH值来控制NAF粘合剂组合物的pH值。在一些示例性实施方案中,碱可以是挥发性或非挥发性碱。示例性的挥发性碱包括例如氨和烷基取代的胺,如甲胺、乙胺或1-氨基丙烷、二甲胺和乙基甲基胺。示例性的非挥发性碱包括例如氢氧化钠、氢氧化钾、碳酸钠和叔丁基氢氧化铵。
在一些示例性实施方案中,通过添加酸/醛清除剂和有机和/或无机碱的混合物来控制NAF粘合剂组合物的pH值。
在某些示例性实施方案中,通过调节粘合剂组合物的pH值至更酸性的pH值来控制NAF粘合剂组合物的pH值。合适的酸性pH值调节剂的实例包括:无机酸及其盐,例如硫酸、磷酸和硼酸,以及有机酸及其盐,例如对-甲苯磺酸、单羧酸或多羧酸,例如但不限于柠檬酸、乙酸及其酸酐、己二酸、草酸及其相应的盐,或聚合性多羧酸,例如聚丙烯酸。
在一些示例性实施方案中,碱在NAF含水粘合剂组合物中的存在量为至多17wt%总固体,包括但不限于约0.5-15wt%总固体;约1-10wt%总固体;约1.5-5wt%总固体。
粘合剂组合物在酸性pH值条件下固化,和具有约2.0-5.0的原始未固化pH值,包括介于两者之间的所有值和范围。以上讨论的pH值控制将pH值(约2-5的原始pH值)增加约0.5-2.5个pH值单位或约0.5-1.5的pH值单位。因此,如果粘合剂组合物的原始未固化pH值(在添加pH控制剂之前)为2.2,则可将粘合剂组合物的pH值调节至约2.7-4.7的pH值。在一些示例性实施方案中,粘结剂组合物在未固化状态下的pH值为约2.2-4.0,包括约2.5-3.8和约2.6-3.5。固化后,粘合剂组合物的pH值可上升至至少pH 6.0,包括约6.5-7.2或约6.8-7.2之间的水平。
另一种减缓变黄方案包括向固化的吊顶板产品上添加酸/醛清除剂材料,然后再向板上施用底布或其它表面材料。可以原位使用这种技术,或附加地向未固化粘合剂组合物添加酸/醛清除剂或pH调节剂。
正如上文所提到,示例性酸/醛清除剂包括:碱金属氢氧化物,包括氢氧化钠(NaOH)、氢氧化钾(KOH)、氢氧化锂(LiOH);碱土金属氢氧化物,包括氢氧化钙(Ca(OH)2)和氢氧化镁(Mg(OH)2);碱金属碳酸盐和碱金属碳酸氢盐,如Na2CO3、K2CO3、NaHCO3和KHCO3;磷酸铵和/或碱金属磷酸盐,如Na3PO4、Na2HPO4、(NH4)2HPO4和(NH4)3PO4);单、二和多-伯胺,如丁基胺、己二胺、Jeffamine T-403、1,3-二(氨基甲基)苯、四亚乙基五胺;仲或叔胺,如二乙醇胺和三乙醇胺;芳族胺,如苯甲酰胺,包括2-氨基苯甲酰胺;酰胺和内酰胺,如丙酰胺、己内酰胺、丙二酰胺和水杨酰胺;羟基碳酸铝和三水合氧化铝;和亚硫酸盐。在一些示例性实施方案中,施用到固化的吊顶板上的清除剂包括碱金属氢氧化物或氢氧化铵、碱金属碳酸盐或碳酸铵、或碱金属碳酸氢盐或碳酸氢铵。
在一些示例性实施方案中,通过任何已知的施用方法向固化的吊顶板产品上添加酸/醛清除剂,所述方法包括通过将干粉洒到板表面上来施用、在板表面上作为涂层施用包含酸/醛清除剂的溶液、和通过幕涂或喷涂溶液或分散体(液压或空压)来施用。在一些示例性实施方案中,以吊顶板的总重量计,涂覆的酸/醛清除剂的添加量为至多5wt%总固体,包括约0.05-2wt%总固体和约0.1-1wt%总固体。
含水粘合剂组合物可任选包含酯化催化剂,也称为固化促进剂。所述催化剂可以包括无机盐、Lewis酸(即氯化铝或三氟化硼)、Bronsted酸(即硫酸、对-甲苯磺酸和硼酸)、有机金属络合物(即羧酸锂、羧酸钠)和/或Lewis碱(即聚亚乙基亚胺、二乙胺或三乙胺)。另外,所述催化剂可以包括含磷有机酸的碱金属盐,具体为磷酸、次磷酸或多磷酸的碱金属盐。这种磷催化剂的实例包括但不限于次磷酸钠、磷酸钠、磷酸钾、焦磷酸二钠、焦磷酸四钠、三聚磷酸钠、六偏磷酸钠、磷酸钾、三聚磷酸钾、三偏磷酸钠、四偏磷酸钠和它们的混合物。另外,所述催化剂或固化促进剂可以为氟硼酸化合物如氟硼酸、四氟硼酸钠、四氟硼酸钾、四氟硼酸钙、四氟硼酸镁、四氟硼酸锌、四氟硼酸铵和它们的混合物。另外,所述催化剂可以为磷化合物和氟硼酸化合物的混合物。其它钠盐如硫酸钠、硝酸钠、碳酸钠也可以或替代地用作催化剂。
催化剂在含水粘合剂组合物中的存在量为粘合剂组合物中总固体的约0-10wt%,包括但不限于约1-5wt%、或约2-4.5wt%、或约2.8-4.0wt%、或约3.0-3.8wt%。
含水粘合剂组合物可以任选包含至少一种偶合剂。在至少一个示例性实施方案中,所述偶合剂为硅烷偶合剂。所述偶合剂在粘合剂组合物中的存在量可以为粘合剂组合物中总固体的约0.01-5wt%、约0.01-2.5wt%、约0.05-1.5wt%、或约0.1-1.0wt%。
可在粘合剂组合物中应用的硅烷偶合剂的非限定性实例可由官能基团烷基、芳基、氨基、环氧基、乙烯基、甲基丙烯氧基、脲基、异氰酸基和巯基表征。在示例性实施方案中,硅烷偶合剂包括含有一个或多个氮原子的硅烷,其具有一个或多个官能团,如(伯、仲、叔和季)胺、氨基、亚氨基、酰胺基、酰亚胺基、脲基或异氰酸基。合适硅烷偶联剂的特定非限定性实例包括但不限于氨基硅烷(如三乙氧基氨基丙基硅烷;3-氨基丙基-三乙氧基硅烷和3-氨基丙基-三羟基硅烷)、环氧三烷氧基硅烷(如3-缩水甘油基丙基三甲氧基硅烷和3-缩水甘油基丙基三乙氧基硅烷)、甲基丙烯酰三烷氧基硅烷(如3-甲基丙烯酰氧丙基三甲氧基硅烷和3-甲基丙烯酰氧丙基三乙氧基硅烷)、烃三烷氧基硅烷、氨基三羟基硅烷、环氧三羟基硅烷、甲基丙烯酰三羟基硅烷和/或烃三羟基硅烷。在一个或多个示例性实施方案中,所述硅烷为氨基硅烷,如γ-氨基丙基三乙氧基硅烷。
含水粘合剂组合物可以任选包含处理助剂。对处理助剂没有特别限制,只要它起到促进纤维形成和取向作用即可。可以应用处理助剂来改善粘合剂施用的分布均匀性、减小粘合剂粘度、增加成型后的上升高度、改善垂直重量分布均匀性和/或加速成型和烘箱固化过程中粘合剂的脱水。以粘合剂组合物中总固体含量计,处理助剂在粘合剂组合物中的存在量可以为0-10wt%、约0.1-5.0wt%、或约0.3-2.0wt%、或约0.5-1.0wt%。在一些示例性实施方案中,含水粘合剂组合物基本不含或完全不含任何处理助剂。
处理助剂的实例包括:消泡剂如矿物油、石蜡油或植物油的乳液和/或分散体;聚二甲基硅氧烷(PDMS)流体的分散体,和已用聚二甲基硅氧烷或其它材料疏水化的二氧化硅。其它处理助剂可以包括由酰胺蜡如亚乙基双硬脂酰胺(EBS)或疏水化二氧化硅制成的颗粒。可用于粘合剂组合物中的另一种处理助剂为表面活性剂。在粘合剂组合物中可以包含一种或多种表面活性剂以辅助粘合剂雾化、润湿和界面粘附。
表面活性剂不特别限定,和包括但不限于如下表面活性剂:离子表面活性剂(如硫酸盐、磺酸盐、磷酸盐和羧酸盐);硫酸盐(如烷基硫酸盐、十二烷基硫酸铵、十二烷基硫酸钠(SDS)、烷基醚硫酸盐、月桂醇聚醚硫酸钠和肉豆蔻醇聚醚硫酸钠);两性表面活性剂(例如烷基甜菜碱如月桂基甜菜碱);磺酸盐(例如二辛基磺基琥珀酸钠、全氟辛烷磺酸盐、全氟丁烷磺酸酯和烷基苯磺酸盐);磷酸盐(例如烷基芳基醚磷酸盐和烷基醚磷酸盐);羧酸盐(例如烷基羧酸盐、脂肪酸盐(皂)、硬脂酸钠、月桂酰肌氨酸钠、羧酸盐含氟表面活性剂、全氟壬酸盐和全氟辛酸盐);阳离子(例如烷基胺盐月桂胺乙酸盐);pH依赖性表面活性剂(伯胺、仲胺或叔胺);永久带电的季铵阳离子(例如烷基三甲基铵盐、溴化十六烷基三甲基铵、氯化十六烷基三甲基铵、氯化十六烷基吡啶和氯化苯乙铵);和两性表面活性剂、季铵盐(例如月桂基三甲基氯化铵和烷基苯甲基二甲基氯化铵),和聚氧乙烯烷基胺。
可以与粘合剂组合物结合使用的合适的非离子表面活性剂包括:聚醚(例如环氧乙烷和环氧丙烷的缩合物,其包括直链和支链烷基和烷芳基聚乙二醇和聚丙二醇醚和硫醚);具有含有约7-18个碳原子的烷基且具有约4-240个环氧乙烷单元的烷基苯氧基聚(环氧乙烷)乙醇(例如庚基苯氧基聚(环氧乙烷)乙醇和壬基苯氧基聚(环氧乙烷)乙醇);包括脱水山梨醇、山梨醇酐、一缩甘露醇和二缩甘露醇的己糖醇的聚环氧烷衍生物;部分长链脂肪酸酯(例如脱水山梨醇单月桂酸酯、脱水山梨醇单棕榈酸酯、脱水山梨醇单硬脂酸酯、脱水山梨醇三硬脂酸酯、脱水山梨醇单油酸酯和脱水山梨醇三油酸酯的聚环氧烷衍生物);环氧乙烷与疏水性碱的缩合物,所述碱由环氧丙烷与丙二醇缩合形成;含硫缩合物(例如通过使环氧乙烷与高级烷基硫醇(例如壬基硫醇、十二烷基硫醇或十四烷基硫醇)或其中烷基含有约6-15个碳原子的烷基硫酚缩合而制备的缩合物);长链羧酸(例如月桂酸、肉豆蔻酸、棕榈酸和油酸,例如妥尔油脂肪酸)的环氧乙烷衍生物;长链醇(例如辛醇、癸醇、月桂醇或十六醇)的环氧乙烷衍生物;以及环氧乙烷/环氧丙烷的共聚物。
在至少一个示例性实施方案中,表面活性剂包括如下的一种或多种:Dynol 607,其为2,5,8,11-四甲基-6-十二炔-5,8-二醇;420、440和465,这三者为乙氧基化的2,4,7,9-四甲基-5-癸炔-4,7-二醇表面活性剂(由Evonik Corporation(Allentown,Pa.)商购获得);Stanfax(十二烷基硫酸钠)、Surfynol465(乙氧基化的2,4,7,9-四甲基5癸炔-4,7-二醇)、TritonTM GR-PG70(1,4-双(2-乙基己基)磺基琥珀酸钠)和TritonTM CF-10(聚(氧-1,2-乙烷二基)、α-(苯基甲基)-ω-(1,1,3,3-四甲基丁基)苯氧基)。
粘合剂可任选包含抑尘剂以减少或消除无机和/或有机颗粒的存在,这些颗粒可能对隔热材料的后续制造和安装产生不利影响。抑尘剂可以是任何常规矿物油、矿物油乳液、天然或合成油、生物油或润滑剂,例如但不限于硅氧烷和硅氧烷乳液、聚乙二醇以及具有高闪点的任何石油或非石油,以减小烘箱内油的蒸发。
在一些示例性实施方案中,含水粘合剂组合物包含至多约10wt%、至多约8wt%或至多约6wt%的抑尘剂。在各种示例性实施方案中,含水粘合剂组合物包含0-10wt%的抑尘剂,包括约1.0-7.0wt%、或约1.5-6.5wt%、或约2.0-6.0wt%、或约2.5-5.8wt%。
粘合剂还包含水以溶解或分散活性固体,以施用于增强纤维上。可以添加足量的水,以将含水粘合剂组物稀释至适合施用于增强纤维并在纤维上获得所需固体含量的粘度。已经发现,与传统的苯酚-脲-甲醛或碳水化合物基粘合剂组合物相比,本发明的粘合剂组合物可含有更低的固体含量。具体地,所述粘合剂组合物可以包含约3-35wt%的粘合剂固体,包括但不限于约5-25%、约8-20%、和约10-19wt%的粘合剂固体。粘合剂固体含量可干燥测量。所得板产品中粘合剂的含量可按烧失量(LOI)来测量。在某些实施方案中,LOI为3-20%,包括但不限于5-17%、8-15%和10-14.5%。
在一些示例性实施方案中,含水粘合剂组合物还可包括一种或多种添加剂,例如偶联剂、填充剂、交联密度提升剂、除臭剂、抗氧化剂、抑尘剂、杀生物剂、防潮剂或它们的组合。粘合剂可任选包含但不限于染料、颜料、附加填料、着色剂、UV稳定剂、热稳定剂、消泡剂、乳化剂、防腐剂(例如苯甲酸钠)、缓蚀剂和它们的混合物。可向粘合剂组合物中添加其它添加剂以改进工艺和产品性能。这些添加剂包括润滑剂、润湿剂、抗静电剂和/或拒水剂。添加剂在粘合剂组合物中的存在量可以为微量(如小于粘合剂组合物的约0.1wt%)至至多约为粘合剂组合物中总固体的10wt%。
这里公开的减缓变黄方案减少了应用NAF或不含甲醛的粘合剂组合物形成的白色或浅色涂漆瓷砖的颜色偏差(Δb*),其中所述粘合剂组合物包含可热降解多元醇化合物,该化合物可以降解并排出与涂漆底布反应并造成变黄变色的尾气。在一些示例性实施方案中,这里提供的减缓变黄的方案消除了涂漆瓷砖的b*的任何明显变化。在其它示例性实施方案中,Δb*偏差小于0.6,或小于0.4,或小于0.3。在一些示例性实施方案中,Δb*偏差不大于0.2。
这里提出的减缓变黄的方案的另一个好处是该方案不会对所得吊顶瓷砖的机械性能产生负面影响。例如,暴露于热/湿条件(60min@227℉/100%rH)后,手工制作的非织造垫或布的拉伸强度/LOI为至少0.8lbf。
现已经概括描述了本发明,可通过参考下文所述一些具体实施例进行进一步理解,这些实施例仅用于说明目的,除非另有规定,否则它们不用于限制本发明。
实施例1
生产包含如下组分的基础NAF粘合剂组合物(NAF粘合剂1),所有组分以重量份列出,固体浓度为12%:
NAF粘合剂1的起始pH为2.6,然后加入5N氢氧化钠以使粘合剂的pH增加0.5、1.0和1.5个单位。按照如下程序准备纸样:首先将水添加到桶中(约5升)。向该水中加入8滴分散剂Nalco 01NM 159。将气动搅拌器降到桶中,设置低速,以搅拌但不产生泡沫。向该搅拌混合物中加入湿的短切玻璃纤维(8克)并搅拌5分钟。在12×12×12英寸的40升Williams标准纸浆测试装置(a.k.a.定幅箱)中放置一个捕集筛网,然后关闭所述箱子。然后,用水填充所述定幅箱到标记“3”处,并在所述定幅箱中放置一个平桨搅拌器。向所述定幅箱中的水中加入商购自Nalco Company的0.5wt%的聚丙烯酰胺溶液7768(80克),并应用所述平桨搅拌器混合直至溶解。在玻璃纤维水搅拌5分钟后,加入0.5wt%的聚丙烯酰胺溶液7768(80克),并低速搅拌1分钟,随后将搅拌速度设置为最高,并再搅拌2分钟。然后将玻璃纤维溶液立即倒入定幅箱中,并用所述平桨搅拌器快速搅拌10个来回。此时,压下定幅箱上的阀门,直到定幅箱变空。定幅箱排空后,打开箱子,抓住筛网的对角从底部取出载有纸样的筛网。然后将筛网放在木架上,并用辊涂器将NAF粘合剂组合物施加到纸样上。然后真空除掉多余的粘合剂。将涂有粘合剂的纸样放入烘箱中在425℉下固化3.5分钟,然后切成1英寸的纸条。纸样的LOI为约7.5-9.5%,然后切成1英寸宽的纸条。在环境条件下和在温度为227℉、相对湿度为100%的热/湿(高压釜)条件下吸湿60分钟后,测试1英寸宽纸条的拉伸强度。结果示于下表2中。
图1和2图示给出了随粘合剂pH值增加纸样在环境条件下和热/湿条件下的拉伸强度。在环境条件下,随着粘合剂组合物的pH值增加至1.5个pH值单位,纸样的拉伸强度增加。另外,在热/湿条件下,随着粘合剂组合物的pH值增加,纸样的拉伸强度没有明显降低。在这些条件下,拉伸强度/LOI为0.908lbf是可接受的。
实施例2
制备用各种粘合剂组合物浸渍的非织造滤布(10cm x10cm正方形样品垫),在标准425℉下固化210秒,冷却至室温,然后切成2.25”x2.25”的正方形。固化后滤布的目标LOI为约25-30%。所述粘合剂组合物包含:1)苯酚脲甲醛树脂(PUF粘合剂);2)NAF粘合剂1(上述实施例1中有述);和3)麦芽糊精+聚丙烯酸+甘油+柠檬酸基(NAF粘合剂2)。从新生产的吊顶瓷砖上采集底布,所述吊顶瓷砖由利用苯酚脲甲醛粘合剂形成的隔热板制成,并带有白色涂漆底布,不含板纤维,切成尺寸为2.25”x2.25”的正方形。应用CIELAB方法测量底布方块的颜色。CIELAB是由国际照明协会(CIE)定义的颜色空间。所述颜色空间采用L*a*b*坐标,其中L*表示亮度,a*是红/绿坐标,b*是黄/蓝坐标。这个刻度上的数字越小,表明变黄越弱。
然后将五块滤布和一块底布方块堆放在装有1mL水的罐子中,各滤布间留有气隙。密封罐子并暴露在140℉下24小时。然后取出底布,测量颜色(L*a*b*)两次。
然后应用前面应用的相同粘合剂组合物(PUF粘合剂、NAF粘合剂1和NAF粘合剂2)形成吊顶板样品,重复该测试方法。所有样品均不包括这里提出的任何减缓变黄方案。板的测试在一个与纸样相当的装置中实施。替代5块尺寸为2.25”x2.25”的粘合剂浸渍纸样,应用1块尺寸为2.25”x2.25”的板样品(全厚度且未贴任何面层)作为测试试样。如图3所示,与具有PUF基粘合剂的板相比,与具有PVOH(NAF粘合剂1)和MD基粘合剂组合物(NAF粘合剂2)的板配对的底布证实了Δb*偏差增加。
因此,很明显非甲醛基板材存储期间底布会变黄。
实施例3
应用这里公开的NAF粘合剂组合物制备非织造滤布(2.25″x2.25″),其中将不同浓度的三水合氧化铝(“ATH”)加到未固化的NAF粘合剂组合物中。在标准425℉下使所述滤布固化210秒。如图4所示,当从组合物中去除ATH时,Δb*最高,在约1.5-2.0之间。但当ATH的浓度在1-5wt%之间增加时,Δb*水平降低至低于1.5,和当ATH浓度为5.0wt%时,Δb*达到小于1,这意味着变黄明显减弱。
实施例4
制备按不同减缓变黄方案用各种粘合剂组合物浸渍的非织造滤布(2.25″x2.25″),和在标准425℉下固化210秒。所述方案包括向粘合剂组合物中添加NaOH以按不同量增加pH值,向粘合剂配制物中添加2-氨基苯甲酰胺,和向固化的粘合剂浸渍的非织造滤布上添加碳酸氢钠(固体和溶液两种)。如图5所示,不包括任何减缓变黄方案的对照组的Δb*最高(约0.4)。而每种减缓变黄方案均将Δb*偏差降低至至少约0.2,和在某些情况下Δb*完全消失。
应理解所述产品和方法的许多更详细方面大部分是本领域已知的,为了简明地给出总的发明概念,现省略了这些方面。虽然已经参考特定方法、材料和实施方案对本发明进行了描述,但本领域熟练技术人员可以容易地由前面的描述确定本发明的本质特征,和在不偏离上文所描述和所附权利要求中所阐述的本发明实质和范围的条件下,可以进行各种改变和调整以适应各种用途和特征。
Claims (27)
1.一种纤维隔热产品,包括:
含有通过含水粘合剂组合物粘合在一起的多根纤维的非织造纤维垫,所述含水粘合剂组合物包含:
可热降解多元醇;
交联剂;和
选自如下的酸/醛清除剂:碱金属氢氧化物;碱土金属氢氧化物;碱金属碳酸盐和碱金属碳酸氢盐;铵和/或碱金属磷酸盐;单、二和多-伯胺;仲或叔胺;芳族胺;酰胺和内酰胺;和亚硫酸盐,其中所述粘合剂组合物不添加甲醛。
2.权利要求1的纤维隔热产品,其中所述交联剂包括丙烯酸的均聚物或共聚物。
3.权利要求1的纤维隔热产品,其中所述可热降解多元醇选自聚乙烯醇和聚乙烯基乙酸酯。
4.权利要求1的纤维隔热产品,其中所述可热降解多元醇在所述粘合剂组合物中的存在量为约3.0-30.0wt%固体。
5.权利要求1的纤维隔热产品,其中所述含水粘合剂组合物还包含分子量小于1000道尔顿的一种或多种短链多元醇和碳水化合物基多元醇。
6.权利要求5的纤维隔热产品,其中所述碳水化合物基多元醇包括选自如下的糖醇:甘油、赤藓糖醇、阿拉伯糖醇、木糖醇、山梨醇、麦芽糖醇、甘露醇、艾杜醇、异麦芽糖醇、乳糖醇、纤维素二糖醇、异麦芽酮糖醇、麦芽三糖醇、异山梨醇、它们的糖浆和它们的混合物。
7.权利要求1的纤维隔热产品,其中所述交联剂在所述粘合剂组合物中的存在量为约50-85wt%固体。
8.权利要求1的纤维隔热产品,其中所述酸/醛清除剂在所述粘合剂组合物中的存在量为约0.5-15wt%总固体。
9.权利要求1的纤维隔热产品,其中所述产品为吊顶板或吊顶瓷砖。
10.权利要求1的纤维隔热产品,其中所述产品的密度为约2.0-10pcf。
11.一种纤维隔热产品,其包括:
含有通过含水粘合剂组合物粘合在一起的多根纤维的非织造纤维垫,所述含水粘合剂组合物包含:
可热降解多元醇;
交联剂;和
选自如下的有机或无机碱:氨、烷基取代的胺、二甲胺、乙基甲基胺、氢氧化钠、氢氧化钾、碳酸钠和叔丁基氢氧化铵,其中所述粘合剂组合物不添加甲醛。
12.权利要求11的纤维隔热产品,其中所述交联剂包括丙烯酸的均聚物或共聚物。
13.权利要求11的纤维隔热产品,其中所述可热降解多元醇选自聚乙烯醇和聚乙烯基乙酸酯。
14.权利要求13的纤维隔热产品,其中所述可热降解多元醇在所述粘合剂组合物中的存在量为约3.0-30.0wt%固体。
15.权利要求11的纤维隔热产品,其中所述含水粘合剂组合物还包含分子量小于1000道尔顿的一种或多种短链多元醇和碳水化合物基多元醇。
16.权利要求15的纤维隔热产品,其中所述碳水化合物基多元醇包括选自如下的糖醇:甘油、赤藓糖醇、阿拉伯糖醇、木糖醇、山梨醇、麦芽糖醇、甘露醇、艾杜醇、异麦芽糖醇、乳糖醇、纤维素二糖醇、异麦芽酮糖醇、麦芽三糖醇、异山梨醇、它们的糖浆和它们的混合物。
17.权利要求11的纤维隔热产品,其中所述交联剂在所述粘合剂组合物中的存在量为约50-85wt%固体。
18.权利要求11的纤维隔热产品,其中所述碱在所述粘合剂组合物中的存在量为约0.5-15wt%总固体。
19.权利要求11的纤维隔热产品,其中所述粘合剂组合物的pH为约2.7-4.7。
20.权利要求11的纤维隔热产品,其中所述产品为吊顶板或吊顶瓷砖。
21.一种吊顶板,其包含:
具有第一面和与第一面相对的第二面的非织造纤维垫,所述非织造垫含有通过至少部分固化的含水粘合剂组合物粘合在一起的多根纤维,其中所述含水粘合剂组合物包含:
可热降解多元醇;和
交联剂,其中非织造纤维垫的所述第一面和第二面中的至少一面至少部分被选自如下的酸/醛清除剂涂覆:碱金属氢氧化物;碱土金属氢氧化物;碱金属碳酸盐和碱金属碳酸氢盐;铵和/或碱金属磷酸盐;单、二和多-伯胺;仲或叔胺;芳族胺;酰胺和内酰胺;和亚硫酸盐。
22.权利要求21的吊顶板,其中所述酸/醛清除剂为干粉形式。
23.权利要求21的吊顶板,其中所述酸/醛清除剂的添加量基于吊顶板重量计为至多约2.0wt%固体。
24.一种吊顶瓷砖,其包括:
包含非织造纤维垫的芯,所述非织造纤维垫具有第一面和与第一面相对的第二面,所述非织造纤维包括通过不含甲醛的粘合剂组合物粘合在一起的多根纤维;和
粘合至所述第一面和所述第二面之一的至少一个面层,所述面层为白色或浅色,其中所述不含甲醛的粘合剂组合物包含:
可热降解多元醇;
交联剂;和
选自如下的酸清除剂:碱金属氢氧化物;碱土金属氢氧化物;碱金属碳酸盐和碱金属碳酸氢盐;铵和/或碱金属磷酸盐;单、二和多-伯胺;仲或叔胺;芳族胺;酰胺和内酰胺;和亚硫酸盐。
25.权利要求24的吊顶瓷砖,其中当暴露于热、湿和老化时,应用CIELAB方法按L*a*b*坐标系测量,所述吊顶瓷砖的Δb*偏差小于1。
26.权利要求24的吊顶瓷砖,其中所述芯的密度为约2-10pcf。
27.一种用于减缓吊顶瓷砖变色的方法,包括:
生产具有第一面和与第一面相对的第二面的玻璃纤维隔热板,所述玻璃纤维隔热板包括通过含水粘合剂组合物粘合在一起的多根玻璃纤维;
至少部分固化所述玻璃纤维隔热板;和
向所述第一面和所述第二面中的至少一个上粘附面层,其中所述不含甲醛的粘合剂组合物包含:
可热降解多元醇;
交联剂;和
选自如下的酸清除剂:碱金属氢氧化物;碱土金属氢氧化物;碱金属碳酸盐和碱金属碳酸氢盐;铵和/或碱金属磷酸盐;单、二和多-伯胺;仲或叔胺;芳族胺;酰胺和内酰胺;和亚硫酸盐。
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CA3114097A1 (en) | 2020-04-02 |
EP3856823A1 (en) | 2021-08-04 |
US20200095712A1 (en) | 2020-03-26 |
WO2020068622A1 (en) | 2020-04-02 |
EP3856823A4 (en) | 2022-06-29 |
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