聚乙烯醇缩丁醛薄膜加工工艺及性能的研究

对聚乙烯醇缩丁醛（PVB）薄膜的加工工艺进行了研究，探讨了不同种类及不同用量的增塑剂对PVB树脂加工工艺及性能的影响；并对增塑剂与树脂的相容性进行了比较。结果表明．极性较高的增塑剂与PVB树脂的相容性较好；挤出PVB膜片时，控制机头的温度在130～140℃之间，可得到表面有花纹的片材。选择适当的增塑剂．薄膜的拉伸强度可以达到35MPa，断裂伸长率可以超过200％，比较适合做夹层安全玻璃用的中间膜。     

首诺在亚太区再建新树脂工厂

最近，全球领先的Saflex（首孚信）聚乙烯醇缩丁醛（PVB）夹层玻璃中间膜生产商首诺公司宣布，将在马来西亚关丹生产基地再新建一家PVB树脂生产工厂。首诺公司对该地区进行了一项全面的可行性研究之后，高度认可这家生产基地的综合能力。     

透视PVB夹层玻璃及其市场

当今设计住宅、商业等设施时主要考虑建筑物的功能、审美和可建造性,但是建筑物中大量使用的玻璃材料是建筑物结构中较为薄弱的环节,必须要对低概率的自然灾害和恶性供给予以考虑。从现在的大型商场、机场、银行等对安全方面的要求,开始使用了PVB夹层玻璃,而且是先钢化后夹胶的玻璃制品,因此夹层玻璃市场发展前景广阔。针对夹层玻璃的结构和功能,叙述了PVB夹层玻璃的性能和特点、PVB玻璃的产品品种及应用领域,分别介绍了建筑用PVB夹层玻璃和车用PVB夹层玻璃,同时指出了PVB夹层玻璃的市场商机。     

建筑用PVB夹层玻璃渐成市场新宠

在欧美，大部分建筑玻璃都采用PVB夹层玻璃，这不仅为了避免伤害事故，还因为PVB夹层玻璃有极好的抗震入侵能力。中间膜能抵御锤子、劈柴刀等凶器的连续攻击，特种PVB夹层玻璃还能在相当长时间内抵御子弹穿透，其安全防范程度可谓极高。     

彩色EVA和PVB夹层玻璃胶片

用于建筑夹层玻璃、汽车夹层玻璃、防盗玻璃的各种彩色EVA和PVB夹层玻璃胶片已被研制成功，经《国家玻璃质量监督检验中心》抽样检测，结果均达到国家监督检验标准，改善了国内PVB胶片单一色调的不足，填补了国内市场的空白。     

高速成长中的塑料新材料PVB树脂的性能及应用

论述了正在高速成长的塑料新材料PVB树脂的性能及应用。介绍了PVB树脂的物性、化学性质、相溶的增塑剂、质量标准、基团间的相互关系等性质。全面讲述了PVB树脂在安全玻璃中间膜、瓷用薄膜花纸、粘合剂、涂料等方面的应用。     

高速成长中的塑料新材料PVB树脂的性及应用

论述了正在高速成长的塑料新材料PVB树脂的性能及应用。介绍丁PVB树脂的物性、化学性质、柑溶的增塑剂、质量标准、基团间的相互关系等性质。全面讲述了PVB树脂杠安全玻璃中间膜、瓷用薄膜花纸、粘合剂、涂料等方面的应用。     

PVB胶片质量检测结果影响因素分析

通过对夹层玻璃用PVB胶片的厚度、挥发物质量分数及黄色指数的不同测试比较,分析了检测仪器设备、检测方法对检测结果的影响,对夹层玻璃生产过程中原材料的质量控制以及PVB产品标准的修订提出了建议。     

高堆积密度聚乙烯醇缩丁醛（PVB）树脂合成和应用研究

PVB中间膜由聚乙烯醇缩丁醛树脂经增塑剂混炼挤压制成,其性能大部分由聚乙烯醇缩丁醛树脂的品质决定。介绍了普通堆积密度PVB的主要现有工艺流程,重点介绍了高堆积密度PVB树脂现有合成工艺和改进工艺。利用多种材料分析设备,如SEM、GPC、DSC、TG、流变仪等仪器,对新工艺合成的PVB树脂进行了高分子性能表征,同时将新旧工艺下合成的PVB树脂性能数据进行了对比、分析和总结。并对新工艺合成的高堆积密度PVB树脂的性能优势进行了深度应用试验探究,最终得出新工艺生产的高堆积密度PVB树脂无论在光学和力学测试上的表现还是耐热性、耐候性、杂质含量以及边缘稳定性上的测试表现都明显优于旧工艺合成的PVB树脂。     

聚焦中国PVB玻璃夹层膜市场

透明、机械强度高、防紫外线、隔热、隔音、防爆、防弹等特性，是PVB夹层玻璃近些年来用途日益广泛的主要原因。特别是当夹层玻璃受到冲击破碎时，碎片被PVB粘住，不易伤人，只是形成辐射状的裂纹，还能保持原来的形状和可见度，在一定时间内，可继续使用。故PVB夹层玻璃被广泛应用于高楼大厦、幕墙、天棚、银行、珠宝店、学校及别墅等对安全性要求较高的场所。[编者按]     

PVB光致变色夹层安全玻璃的制备及性能研究

以1,2,3,3-四甲基吲哚啉碘化物和5-硝基水杨醛为原料合成了光致变色吲哚啉螺吡喃化合物,并将其制成了一种PVB光致变色夹层安全玻璃,对其抗冲击强度性能和光照前后紫外可见光谱进行了分析测试。结果表明,所制备的PVB夹层安全玻璃符合GB9 962-1999中对安全玻璃强度的技术要求,同时还具有调光作用和光致变色性能。     

聚乙烯醇缩丁醛的合成新工艺

通过对聚乙烯醇缩丁醛(PVB)的合成工艺进行改进,并在不加任何乳化剂的条件下,制得了完全粉末状的PVB产品;将其用于夹层安全玻璃的制备,则雾度值为0.41%,完全符合夹层安全玻璃的使用要求;并讨论了各因素对PVB产量的影响。实验结果表明,当m(PVA)∶m(正丁醛)∶V(HCl)=100 g∶56 g∶15 mL时,PVB的产量最高,其乙烯醇缩丁醛含量可达77.7%。     

Windshield recycling focused on effective separation of PVB sheet

The study is focused on windshield recycling process resulting in poly(vinyl butyral) (PVB) sheets with very low amout of remain glass particles. PVB sheets were obtained from worldwide manufacturer DuPont and then they were laminated by standard autoclaving process. One sample of PVB sheet was modified by multi‐functional organic acid in order to compare various levels of adhesion. Three‐stage technology was proposed for recycling PVB sheets. In the first‐stage laminated safety glass was mechanically cracked. In the second‐stage the adhesion reduction to minimal degree was followed by chemical‐physical assisted separation. It causes self‐release of the glass out of the PVB sheet. The third‐stage was mechanical peeling of the remaining glass from the PVB sheet which completed the recycling process. The optimal process conditions for the most effective delamination process were found. Delamination technology produces PVB sheet with minimal residual glass content (up to 300 ppm) and minimal change in PVB sheet properties. Described recycling technology is ecologically friendly (the effluent is fully recyclable as well) and could reduce the worldwide problem with windshield waste disposal. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 39879.     

使用PVB膜片作为安全玻璃夹层的常见问题与改进方法

研究了聚乙烯醇缩丁醛（PVB）膜片、浮法玻璃和夹玻工艺对夹层安全玻璃的影响,探讨夹玻的各个工序中出现不正常的原因,并提出解决问题的应对方法,提高了最终制品的质量,实现夹玻的科学生产.     

Effect of water and acid–base reactants on adhesive properties of various plasticized poly(vinyl butyral) sheets

We study the changes in adhesive properties of poly(vinyl butyral) (PVB) sheets assigned for safety glass preparation. PVB sheets have been produced by various worldwide manufacturers by simple blending methods such as extrusion, thermo‐mechanical mixer processes, etc. Some samples were modified either by magnesium acetate or by oligo‐functional organic acid to either reduce the adhesion to glass or to increase it. Adhesive measurements were evaluated on the air side and the tin side of the laminated glass. The study deals with a recognition of causes of the PVB adhesion change as a function of adsorbed water content into the polymer matrix. Results describe the influence of hydroxyl group content and amount of added acid–base reactants for adhesion adjustment of every tested PVB sheet. It also describes typical adhesion fluctuation and specific adhesion bonding of PVB sheets to glass in particular conditions. The analysis evaluates the best and the worst blend combinations and their modification on the adhesion change. We focused on adhesion sensitivity to increasing water content and the amount of added adhesion modifier. This work also evaluated the critical range of water content that provides adhesion fluctuation. The evaluation of various types of PVB sheets was performed and the most stable adhesion adjustment was found. Obtained values and comparisons are very important for the PVB sheets industry and for industry dealing with lamination of laminated glasses. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013     

Structure and properties of plasticized polyvinyl butyral‐silica nanocomposite films and test production of laminated glass using films

Plasticized polyvinyl butyral (PVB)‐silica nanocomposite films were formed by mixing PVB ethanol solution and silica sol, which was prepared from tetraethyl orthosilicate. The nanocomposite films were colorless and transparent even though the content of silica was 70 wt%. The glass transition temperature of PVB in the silica 2.5 wt% nanocomposites was higher by about 10°C than that of plasticized PVB. The PVB‐silica nanocomposite films were applied as an interlayer for laminated glass. The laminated glass made with the nanocomposite films containing less than 10 wt% silica showed good penetration resistance, not only at room temperature but also at 70°C. J. VINYL ADDIT. TECHNOL., 25:E59–E63, 2019. © 2018 Society of Plastics Engineers     

Influence of water and magnesium ion on the optical properties in various plasticized poly(vinyl butyral) sheets

The study is focused on influences of optical properties change of poly(vinyl butyral) (PVB) sheets determined for safety glass preparing. Optic measurements were evaluated itself and after, the laminated glass was observed. The study deals with a cognizance of causation of the optical properties change in different PVB sheets in dependence on adsorbed water content into the polymer matrix. Results of this work describe the influence of ? OH group content on PVB chain and type and amount of additives adjusting adhesion of PVB towards glass. However, the most important discovery of this work is evaluation of critical water content that leads to haze generation. The evaluation of various types of sheets was performed. At the same time the artificial addition of Mg²⁺ salts of organic acids (with various polarity of the molecule) was evaluated to assess their influence on haze generation. It was found that haze caused by Mg²⁺ salt is possible to eliminate when there is certain water content in PVB. Obtained values and comparisons are very important for PVB sheets industry and for industry dealing with lamination of PVB between glasses. Influence of these factors and comparison of haze generation for various PVB sheets has not been published yet. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

聚乙烯醇缩丁醛薄膜老化机理研究

利用红外光谱和力学性能的变化研究了聚乙烯醇缩丁醛薄膜的热老化和紫外光老化机理,结果表明,在热老化及紫外光老化过程中,PVB薄膜的拉伸强度均是先增大然后再减小。这是由于在热老化过程中PVB薄膜发生了增塑剂的损失及PVB分子主链和侧链的断裂,而在紫外光老化过程中,主要是发生PVB分子链之间的交联反应,仅有少量的分子链发生断裂。PVB薄膜的光老化和热老化都是由树脂中存在少量聚醋酸乙烯分解生成的自由基诱导而发生的,添加适量的热稳定剂和紫外吸收剂可以吸收薄膜加工时生成的自由基,从而提高薄膜的稳定性及粘结性能。     

PVB胶片对夹层玻璃产品质量的影响

在夹层玻璃生产中PVB胶片的质量直接影响制成品的质量和使用寿命.本文从胶片的来源种类来分析PVB胶片对夹层玻璃质量的影响,希望有助于中国玻璃深加工行业健康的发展.