水泥刨花板在我国的应用和发展前景

简要介绍了国内外水泥刨花板的发展概况，水泥刨花板的性能、应用及其生产方法，水泥刨花板的市场发展前景广阔，发展水泥刨花板符合国家的产业政策。     

低密度水泥刨花板抗冻性能研究

水泥刨花板在寒冷地区使用时,其抗冻性能的好坏对使用寿命具有直接影响,特别是低密度水泥刨花板,因其灰木比低、密度低,导致抗冻性能下降。在低密度水泥刨花板制备过程中加入聚合物乳胶,考察其对低密度水泥刨花板抗冻性能的影响。结果表明:乳胶的加入可有效改善水泥刨花板的抗冻性能。当聚合物丁苯胶乳的用量为水泥质量分数的5%时,低密度水泥刨花板的综合性能较优。     

粉煤灰水泥刨花板

粉煤灰水泥刨花板是近年来出现的一种新型无机人造板，其生产工艺与水泥刨花板相似，但与水泥刨花板相比。粉煤灰水泥刨花板具有“利废”的特点。它可以利用从火力发电厂燃煤锅炉废气中收集的废弃物——粉状灰，不但降低了生产成本，有一定的经济效益，而且还有一定的环保作用。粉煤灰水泥刨花板性能并不比水泥刨花板差，目前它在建材市场倍受人们的青睐。它的生产还可以享受国家的优惠政策，具有广阔的市场前景。     

二氧化碳在水泥粉煤灰刨花生产中的应用

１ 水泥粉煤灰刨花板简介 在水泥刨花板生产中以一定量的粉煤灰替代一定比例的水泥生产出来的板材称之为水泥粉煤灰刨花板。其不仅具有水泥刨花板的各种优良性能，而且生产中利用了粉煤灰这一工业废物，既降低了生产成本，又保护了环境，还可以获得国家的优惠政策。２二氧化碳在水泥粉媒灰刨花板生产中的应用机理 从水泥和粉煤灰的成分以及它们与水的反应情况看，水泥和粉煤灰在成品水泥粉煤灰刨花板中主要是以硅酸钙和氢氧化钙晶体形态存在．但在没有人为改变反应环境的情况下有些反应速度太慢，在经过较长时间水泥浆硬化后反应仍然存在。…     

新阻燃板材——桉树水泥刨花板发展的研究

桉树是世界上速生丰产林的主要造林树种,选择出性能稳定均一的优良基因型无性系扩大繁殖,用于建立大面积人工林,达到提高木材产量和质量的目的,也使水泥刨花板原料更加丰富.随着世界人口的增长,道路交通和建房用地的紧张,大批高层建筑如雨后春笋,拔地而起,从而也促进了轻质高强阻燃材料--桉树水泥刨花板的发展,其除用作建筑材料外,还可用作室内装修、家俱等等.文中论述了国内外水泥刨花板的发展现状、水泥刨花板的生产与应用,水泥刨花板生产的新原料及展望水泥刨花板发展前景.     

水泥刨花板的现状及应用

论述了国内外水泥刨花板的发展概况，分析了水泥刨花板的应用特点。     

水泥刨花板制作轻质条板工艺技术的研究

根据我国水泥刨花板在建筑上的应用情况 ,研究以水泥刨花板为原料 ,加工制作轻型墙体条板的结构及生产工艺技术 ,这种轻质条板的开发与应用必将推动水泥刨花板在墙体材料方面的应用     

矿渣刨花板

由芬兰Raute 公司开发并获得专利的矿渣水泥刨花板,是以矿渣水泥(与矿渣硅酸盐水泥不同)为胶粘剂的新型水泥刨花板,简称为矿渣刨花板、在矿渣刨花板中,最为重要的是矿渣水泥。其主要制做过程为:将熔融的矿渣快速固化、冷却,使之形成玻璃状颗粒(玻璃化为80～90%,颗粒度为0.1～2.0毫米),然后对玻璃状颗粒进行干燥、研磨,即可制成矿渣水泥。     

挤压法生产刨花板

目前,国内的刨花板生产非常普遍,有普通刨花板、水泥刨花板和定向刨花板等,但现在采用挤压法生产的刨花板还没有。挤压法生产刨花板的生产工艺如下。     

矿渣刨花板基本特性的研究

一、前言矿渣刨花板是国外近几年才出现的一种无机胶合刨花板。它是以矿渣粉末和木质刨花作原料,加上少量活性剂和水,经搅拌、成型、热压而成的一种新型刨花板。其物理力学性能与水泥刨花板相似,是一种理想的建筑材料。与水泥刨花板相比,     

Effect of moisture content on manufacturing cement-bonded particleboard using supercritical CO<Subscript>2</Subscript>

This study examined the effects of moisture content (MC) on the manufacture of cement-bonded particleboard (CBP) using supercritical CO₂ in the curing process. Significant correlations were found between MC and the performance of CBP: the internal bond strength, modulus of rupture, and modulus of elasticity values of CBP achieved their maximums, when the MC of boards was approximately 30%. This finding indicated that during the curing phase of manufacturing CBP, a MC of about 30%, which is nearly equal to the water–cement (w/c) ratio of about 0.34, contributes to improved mechanical properties. However, the mechanical properties decreased when the MC was below 30%, which had a negative effect on board performance, indicating that carbon dioxide could not fully react and no carbonation occurred during the curing process. Maintaining a MC of approximately 30% as an ordinary condition of the cement required in the curing of CBP could promote the reaction of carbon dioxide to form calcium carbonate (CaCO₃), which leads to increased final strength of CBP. Both X-ray diffractometry and thermal gravimetry observation agreed well with these results and clarified that the increase of CaCO₃ content caused by carbonation with increased MC of boards contributed to improving the mechanical properties of CBP.     

Curing and degradation processes of cement-bonded particleboard by supercritical CO<Subscript>2</Subscript> treatment

This study examined the effects of supercritical CO₂ treatment on the curing and degradation of cementbonded particleboard (CBP). Significant correlations were found between the supercritical CO₂ treatment and mechanical properties during both curing and degradation processes. Internal bond (IB) strength, modulus of rupture (MOR), and modulus of elasticity (MOE) values of CBP achieved their maximums by supercritical CO₂ treatment in 30 min. These conditions indicated that supercritical CO₂ treatment accelerates the curing process rapidly and enhances the mechanical properties of the CBP. However, these values decreased in treatment from 60 min to 10 days and had a negative effect on board performance, indicating that supercritical CO₂ treatment over a longer time span leads to degradation of the CBP. Furthermore, X-ray diffractometry (XRD), thermal gravimetry (TG-DTG), and scanning electron microscopy (SEM) observation clarified that the mechanisms of degradation are directly affected by the mineralogical composition of the system, in par ticular, by the calcium carbonate content as caused by carbonation.     

Rapid production of high-strength cement-bonded particleboard using gaseous or supercritical carbon dioxide

This study deals with the effects of curing treatment with gaseous and supercritical carbon dioxide on the properties of cement-bonded particleboard (CBP) manufactured by the conventional cold-pressing method. The hydration of cement and the mechanism of improvement were examined using X-ray diffractometry (XRD), thermal gravimetry (TG-DTG), and scanning electron microscopy (SEM) observations. The results are as follows: (1) The curing of cement was accelerated concomitantly with the improvement in mechanical and dimensional properties of CBP significantly by curing with gaseous or supercritical carbon dioxide. (2) Supercritical carbon dioxide curing imparted boards optimal properties at a faster rate than did gaseous curing. (3) Accelerated formation of calcium silicate hydrate and calcium carbonate and the interlocking of those hydration products on the wood surface are potentially the main reasons for the superior strength of carbon dioxide-cured boards.     

森林旅游产品开发探析

在分析森林旅游产品基本内涵的基础上,充分考虑森林旅游产品的特征、发展趋势等因素,总结出森林旅游产品的开发模式,即以可持续发展为原则、以主题定位为理念、以产品创新为核心、以休闲体验为重点、以乡土开发为特色。以期对不断发展的森林旅游产品开发及经营提供建议和参考。     

山区林业综合开发建设与战略研究

结合我国山区综合开发的现状分析,详细阐述了实施山区林业综合开发战略应坚持以林业为主体,以经济林建设为突破口,以市场为导向,以商品生产为中心的战略思想和措施。针对山区所具有的自然特征、经济特点、生产力水平、存在问题和分区布局,提出了山区林业开发建设的主要方向。     

沙棘开发利用的前景

本文对沙棘国内外开发的动态和目前在资源建设、工业园区的建设、育种、引种、药品开发、原料开发的前景方面进行了论述，初步阐明沙棘产业开发是一项前景广阔的事业。     

大豆基木材胶粘剂的研发

综述了20世纪70年代前大豆基木材胶粘剂开发应用和20世纪90年代以来国内外大豆基木材胶粘剂研发情况,以及大豆基木材胶粘剂开发中的关键性理论与方法。提出大豆基木材胶粘剂研发今后努力的方向。     

走近木工机床数控软件

从国内软件行业的发展入手，分析了国内软件技术的发展历程和落后原因。以此为基础，介绍了国内数控相关软件发展的现状和存在的问题，得出国内木工机床软件发展受限的原因，并介绍了木工机床数控软件的工作平台和主流开发工具。     

宜君县核桃产业发展现状与对策

通过国内外核桃产业和宜君县核桃产业发展现状的分析,以可持续发展理论为支撑,探讨全县核桃产业可持续发展模式,深入剖析产业发展中存在的问题,并就这些问题提出相应的对策。     

自然保护区生态旅游规划研究现状与展望

在参考国内自然保护区生态旅游相关文献的基础上, 结合实践现状, 概述了保护区进行生态旅游开发的理论基础、原则、方法及学术界讨论的焦点, 对保护区开展生态旅游的特殊性、未来发展趋势作出展望。