浅谈PVC溶胶与合成纤维的粘接

介绍了一种用于PVC溶胶的直接粘接剂－Vulcabond，其可以改进PVC塑料溶胶与聚酯、尼龙和其它合成纤维产品的粘接性，并详细介绍了它的使用方法和影响粘接的各种因素。     

PVC涂层钢板

本文介绍了聚氯乙烯涂层钢板的制造方法。通过分析涂层钢板性能的检验结果,证明聚氯乙烯涂层钢板的主要性能已达到JISK6744—1973所规定的指标。可在建筑、交通运输、家电制品等行业中得到应用。     

电镀槽槽体钢板与PVC衬板的粘接工艺

阐述了电镀槽槽体钢板与PVC衬板的粘接工艺。选用合理的表面处理方法对钢板和PVC衬板分别进行表面处理,其中选用乙酸乙酯溶剂反复擦拭钢板进行脱脂处理,砂纸打磨对于钢板表面进行粗化,最后利用重铬酸钠-浓硫酸处理液在70～75℃处理钢板10～15min,PVC板则用甲乙酮溶剂脱脂处理,而后用砂布打磨粗化表面,并用丙酮擦拭残留的污物,最后用清水冲洗并干燥。采用改性的环氧胶黏剂粘接钢板和PVC板,在涂胶过程中应注意涂胶的均匀性及晾置的时间,而后室温固化1～2d,完成了电镀槽槽体钢板与PVC衬板的粘接工艺过程。     

PP,PVC与FRP粘接的研究

本文以PP、PVC和聚酯玻璃钢(FRP)为原材料采用不同的表面处理方法,选择不同的胶粘剂,使PP与FRP、PVC与FRP获得很好的粘接;探讨了粘接机理,为这种复合材料的生产提供了新途径和理论依据。     

一种用于PVC粘接的环氧树脂胶粘剂

为解决PVC的粘接问题,采用自制对软质PVC具有良好亲合作用的改性环氧树脂增韧树脂制备的环氧树脂胶粘剂,室温固化24h或70℃固化1h可以达到软质PVC材料破坏,使用温度80～100℃。     

软PVC和玻璃钢油漆面间的粘接

本文探讨了软PVC与玻璃钢油漆面粘接的胶粘剂选择和应用工艺。试验结果表明,用JX-19-1胶及适当的工艺粘接,可以获得较好的效果。     

热熔胶膜在发泡PVC/铝热熔胶膜在发泡PVC/铝复合板材中的粘接可靠性研究性研究

以鹿山热熔胶膜VM2008为胶粘剂,制备了铝/PVC发泡节能复合板材(AEP),通过对不同复合工艺制备的复合结构粘接强度的测试确定热熔胶膜VM2008的最佳复合工艺,研究了复合结构的粘接可靠性包括耐温差性能、耐热老化性能、耐水煮性能、耐高温高湿性能以及耐紫外老化性能.结果表明,该热熔胶膜在160℃、0.4MPa、10s...     

PVC金属板贴塑技术及其应用

1　前言ＰＶＣ金属板即金属表面贴有ＰＶＣ(聚氯乙烯 )膜的一种复合板材。目前 ,拥有ＰＶＣ金属板贴塑技术的国家有日本、韩国、德国、瑞典、英国、法国、美国等 ,其中日本是世界上贴塑技术较先进的国家。近年来 ,国内也有少数厂家引进 (我厂是 1980年以后引进的 )这方面的生产技术 ,但规模和产量都相对较小 ,生产技术还比较落后 ,大部分还要靠进口。本文将根据生产从工艺方面对ＰＶＣ金属板贴塑技术作概要说明。2　贴塑原理ＰＶＣ金属板贴塑是通过一种辊涂机将ＰＶＣ胶粘剂均匀地涂布于经预先处理好的金属板表面 ,然后将金属板通过输送带以…     

PVC膜贴塑加工单耗计算方法

介绍PVC膜在正常贴塑生产的过程中，在受各种客观因素影响的条件下，所消耗PVC膜的单位消耗量，较详细地叙述了该消耗量的来源和计算方法。     

金属板贴塑的前处理

提出了一种适用于各种金属板贴塑的前处理工艺,着重介绍了脱脂和磷化的工艺配方、特点及槽液的维护。     

PVC层压板层压工艺探讨

探讨了PVC层压板层压工艺的要点,介绍了时间、温度、压力三要素在层压工艺中的调整情况。     

硬质聚氯乙烯低发泡板材的生产技术

ＫＮＤ - 1 2 5型硬质ＰＶＣ低发泡挤出生产线采用德国拜耳公司设备 ,引进瑞士ＡＩＲＥＸ公司的专利生产技术 ,可生产 70 0、5 0 0ｋｇ/ｍ3 两种密度、宽 1 2 2 0ｍｍ、厚 1～ 1 9ｍｍ的各种板材。现以 70 0ｋｇ/ｍ3 发泡板为例 ,探讨生产中出现的故障及解决方法。1　生产中常见故障及解决方法1 1　密度太高( 1 )增大冷却辊和模头距离 ,因板会增厚 ,须提高牵引速度 ;( 2 )不改变回收料用量 ,增大主要转速 ,牵引速度和新料用量 ;( 3)不改变新料用量 ,降低回收料用量 ;( 4)把机筒第 3区温度降低 5℃ ;( 5 )对于 2 .3ｍｍ薄板 ,降低冷却辊压力…     

活化粉煤灰在PVC建筑模板中的应用

探讨了活化粉煤灰对PVC树脂的改性机制,研究了其用量对物料的加工挤出及对PVC建筑模板力学性能的影响。结果表明：活化粉煤灰的用量为30份时,物料的塑化和成型比较稳定,制得的PVC建筑模板综合力学性能较好。     

PP人造纸与PVC发泡片材的粘合

研制了PP人造纸与PVC发泡片材粘合用EVA热熔胶并对其粘合工艺进行了设计。讨论了EVA树脂用量、粘合温度、EVA的VAC含量及MI值对剥离强度的影响。     

Adhesion of Injection Molded PVC to Steel Substrates

Interactions occurring at the interface between injection-molded poly (vinyl chloride) (PVC) and steel substrates that were coated with thin films of aminosilanes were investigated by X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FTIR). The silane films were formed by adsorption of γ-aminopropyltriethoxysilane (γ-APS) or N-(2-aminoethyl-3-aminopropyl)trimethoxysilane (γ-AEAPS) from 2% aqueous solutions onto polished steel substrates. PVC was injection molded onto the silane-primed steel substrates and annealed at temperatures up to 170°C for times as long as 30 min. PVC was peeled off of the primed steel substrates using a 90° peel test and the substrate failure surfaces were thoroughly rinsed with tetrahydrofuran (THF) and distilled water to remove PVC and other compounds that were not strongly bonded to the substrates. The PVC failure surfaces were characterized by attenuated total reflection infrared spectroscopy (ATR) and PVC rinsed off of the substrate failure surfaces was characterized by transmission infrared spectroscopy. The resulting transmission and ATR spectra showed an absorption band near 1650 cm^?1 that was attributed to unsaturation in PVC. The substrate failure surfaces were characterized by XPS; curve-fitting of N(1s) and Cl(2p) high-resolution spectra showed the formation of amine hydrochloride complexes by protonation of amino groups of the silanes with HCl that was liberated from PVC during the onset of thermal dehydrochlorination. Furthermore, quaternization or nucleophilic substitution of labile pendent allylic chloride groups by amino groups on the silanes took place, thus grafting PVC onto the aminosilanes. It was determined that PVC that had β-chloroallyl groupings along its chains showed better adhesion with steel primed with aminosilanes and that generation of allylic chloride groups in PVC chains was the rate-limiting step in the reaction between PVC and aminosilane. Moreover, the effect of crosslinking of silane films on adhesion between PVC and aminosilane primed steel was investigated and it was concluded that interdiffusion of the polymer phase and the silane phase was also critical in obtaining good adhesion.     

Adhesion of Injection Molded PVC to Steel Substrates

Interactions occurring at the interface between injection-molded poly (vinyl chloride) (PVC) and steel substrates that were coated with thin films of aminosilanes were investigated by X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FTIR). The silane films were formed by adsorption of γ-aminopropyltriethoxysilane (γ-APS) or N-(2-aminoethyl-3-aminopropyl)trimethoxysilane (γ-AEAPS) from 2% aqueous solutions onto polished steel substrates. PVC was injection molded onto the silane-primed steel substrates and annealed at temperatures up to 170°C for times as long as 30 min. PVC was peeled off of the primed steel substrates using a 90° peel test and the substrate failure surfaces were thoroughly rinsed with tetrahydrofuran (THF) and distilled water to remove PVC and other compounds that were not strongly bonded to the substrates. The PVC failure surfaces were characterized by attenuated total reflection infrared spectroscopy (ATR) and PVC rinsed off of the substrate failure surfaces was characterized by transmission infrared spectroscopy. The resulting transmission and ATR spectra showed an absorption band near 1650 cm^-1 that was attributed to unsaturation in PVC. The substrate failure surfaces were characterized by XPS; curve-fitting of N(1s) and Cl(2p) high-resolution spectra showed the formation of amine hydrochloride complexes by protonation of amino groups of the silanes with HCl that was liberated from PVC during the onset of thermal dehydrochlorination. Furthermore, quaternization or nucleophilic substitution of labile pendent allylic chloride groups by amino groups on the silanes took place, thus grafting PVC onto the aminosilanes. It was determined that PVC that had β-chloroallyl groupings along its chains showed better adhesion with steel primed with aminosilanes and that generation of allylic chloride groups in PVC chains was the rate-limiting step in the reaction between PVC and aminosilane. Moreover, the effect of crosslinking of silane films on adhesion between PVC and aminosilane primed steel was investigated and it was concluded that interdiffusion of the polymer phase and the silane phase was also critical in obtaining good adhesion.     

PE/PVC共混物与PE界面黏结性能研究

为改善聚氯乙烯(PVC)和聚乙烯(PE)界面黏结性能,制备了一系列PE/PVC共混物及其与PE的黏结材料,探究了原料比例和成型温度对(PE/PVC)/PE界面黏结性能的影响。结果表明,PE/PVC共混物为不相容体系。共混物中随着PE含量升高,体系拉伸强度增大,断裂伸长率升高。(PE/PVC)/PE材料中,随着PE/PVC共混物中PVC含量升高,PE/PVC与PE的界面黏结强度先升高后降低。成型温度升高,界面黏结性能提高。在PE/PVC比例为60/40、黏结温度为100℃时,PE/PVC共混物与PE的界面黏结强度最大,可与共混物拉伸强度接近。