聚氯乙烯环保型增塑剂的合成及应用

聚氯乙烯中常用的环保型增塑剂主要有柠檬酸酯类增塑剂、对苯二甲酸酯类增塑剂、聚酯类增塑剂、偏苯三酸酯增塑剂、环己烷二羧酸酯类增塑剂、植物油基增塑剂等,通过了解和分析这些增塑剂的特征和合成,推进环保型增塑剂在塑料生产中的应用。     

无机粉体改性塑料环境友好材料的环境协调性研究

从环境友好材料的角度系统研究无机粉体改性塑料环境友好材料的综合性能,论证了无机粉体改性塑料环境友好材料是一类经济性、功能性和环境协调性有机统一的材料,探讨了"可环境消纳助剂"可强化无机粉体改性塑料的环境消纳特性;重点介绍了无机粉体的筛选原则及环境协调性,总结了无机粉体改性塑料环境友好材料仍然存在的缺陷及今后的对策,强调要加快推进提高这一新型改性塑料材料产业化的技术水平;明确了"光钙型多功能环境友好塑料"是狭义上的无机粉体改性塑料环境友好塑料,该技术产品已成为治理塑料"白色污染"的主流产品之一;提出今后"开发性价比高"的无机粉体改性塑料和"具有可环境消纳特性"的"光钙型多功能环境友好塑料"将作为无机粉体改性塑料环境友好材料发展重点的观点。     

再谈“绿色涂装”——汽车“绿色涂装与涂料”的发展趋势（一）

在介绍国内汽车涂装的环保、节能减排现状及差距和＂绿色涂装＂理念（6个高效、10个更少、2个高效、1个更低）的基础上,按汽车涂装工艺推荐了26项成熟的先进适用的绿色涂装工艺技术。     

A Review of: “Interfacial Phenomena in Polymers,by Yuri S. Lipatov. Naukova Dumka Publ., Kiev, 1980, 259 pp. (in Russian).”

Bonding aluminum metal and its alloys with epoxy adhesives is sensitive to process variables, particularly surface contamination and moisture exposure. In the past, several surface modification schemes have been developed to improve the epoxy-bonding of aluminum. The present work describes a simple process that produces significant improvement in strength and durability of epoxy-bonded aluminum. In this process, aluminum surfaces are first rinsed with dilute sodium metasilicate solution followed by a dilute aqueous epoxysilane solution. The combination of the two materials exhibits a bond strength synergism as measured by bondline fracture toughness. The treated aluminum surface also exhibits a significant increase in bond strength tolerance to contamination and moisture exposure. The effect of epoxysilane chemical structure on bond durability was examined, as was the role of the silicate surface treatment.     

浅析服装设计中服装材料的运用、发展及趋势

服装材料是构成服装的基本要素,服装的竞争同时也是服装材料的竞争。本文通过对服装材料历史的概述,总结分析出当代服装材料发展的三大趋势:服装材料的组合与再创造、新加工方式与新原料结合的环保服装材料、高科技材料的开发与使用。     

结晶木糖醇生产工艺、节能及环保分析

介绍了结晶木糖醇生产背景、质量标准及生产技术方案;分析了结晶木糖醇生产过程主要能耗,提出了节能措施;分析了结晶木糖醇生产过程主要"三废"内容,提出了"三废"治理的方法。     

介绍国外最新几种船底防污涂料

介绍了日本和美国几种节能、环保型船底防污涂料,包括无毒防污剂。     

浅析钢筋混凝土无损拆除施工技术

在建筑工程拆除或改建施工工程中,采用爆破、机械或人工凿打等常规拆除施工技术措施存在诸多不利影响:如对原建建筑及构筑物保留部分的结构影响巨大,且施工工期长、粉尘污染严重等。本文结合某大型钢铁公司厂房技改工程实践,着重介绍一种新型、无损、高效、环保的拆除钢筋混凝土结构施工技术及其相关拆除设备的应用实例。     

环保型增塑剂松香十二醇酯的合成与表征

以松香、十二醇为原料,在无溶剂和氮气保护下,通过酯化反应合成了环保型增塑剂松香十二醇酯。在催化剂的筛选及最佳反应温度确定的基础上,通过L9(34)正交实验详细研究了松香十二醇酯的合成工艺,确定了最佳反应条件,即松香中树脂酸与十二醇的物质的量之比为1∶2.5,催化剂浓H2SO4用量为松香质量的5%,反应温度控制在140~145℃,反应时间为8 h。由此合成的产物产率为75.1%。然后通过傅立叶变换红外光谱、紫外-可见光谱、核磁共振氢谱、热重分析等手段对产物进行了表征和测试。结果表明,合成的产物即为目标产物松香十二醇酯,而其主分解温度为295℃,可以作为具有一定耐温性能的环保型增塑剂来使用。     

An eco-friendly and high shear strength adhesive from catechol-modified polyethyleneimine

Conventional adhesives often emit volatile organic compounds (VOCs), which have a negative impact on human health. In this paper, an environmentally-friendly supramolecular adhesive PD which has high adhesive and low VOCs emission is prepared by the reaction between polyethyleneimine (PEI) and 3,4-dihydroxybenzaldehyde (DBA). PD containing abundant catechol groups exhibit excellent adhesion to wood substrates and is able to reach a maximum shear strength of 5.20 ± 0.39 MPa. One factor is attributed to multiple reactions between PEI, and DBA and oxidation of DBA. These reactions construct a complex three-dimensional cross-linked structure which is very helpful to improve the bonding performance of the adhesive. Another reason refers to the fact that a large number of catechol groups in PD can form a lot of hydrogen bonds with the amino group in PEI and the hydroxyl group in the wood substrate. These hydrogen bonds play an important role in enhancing shear strength. PD adhesives have a stronger bond strength than commercial chloroprene rubber (CR, Pattex-PXL) and polyvinyl acetate adhesives (PVAc, JUJU-8708) and have lower emissions of VOCs. As an environmentally-friendly adhesive for wood-based substrates, this adhesive may have potential applications in the wood processing industry.