共查询到20条相似文献,搜索用时 93 毫秒
1.
2.
3.
4.
5.
6.
PVC木塑结皮发泡板材生产线 总被引:1,自引:0,他引:1
青岛山塑挤出设备有限公司生产的PVC木塑结皮发泡板材生产线配置科学,高效节能,可实现连续稳定生产,属于国家扶持的节能减排新项目。 相似文献
7.
8.
王伟 《中国石油和化工标准与质量》2012,33(11):46
近年来,随着工业生产的不断发展,结皮发泡工艺有着更为广泛的应用空间,尤其是结皮发泡PVC塑料板材的生产与应用。当前,结皮发泡PVC塑料板材的生产工艺与其他的塑料挤出制品相比,具有更好的塑化成型能力,同时也拥有数量和大小分布都更为均匀的特点。影响结皮发泡PVC塑料板材生产质量的因素有很多,本文则简要介绍一下结皮发泡PVC塑料板材的生产技术,并且对其质量影响因素进行详细的分析。 相似文献
9.
目前,各行各业大量使用橡塑发泡材料,应用于鞋底,电器的包装,管路保温,运动手柄等。它们都具有重量轻,胶质柔软,成本低等特点。本文介绍丁腈橡胶与聚氯乙烯并用生产挤出发泡材料的研究过程,丁腈橡胶与聚氯乙烯并用发泡材料具有广阔的市场前景,大量应用于冷汽机管路的保温,运动器材手柄等部位,它具有质轻,柔软,耐热,阻燃,耐腐蚀,成本低,高效率等特点。我们选用丁腈橡胶与聚氯乙烯树脂共混,采用挤出,常压,二次硫化发泡工艺,本文介绍橡塑并用生产挤出发泡材料的研究过程。 相似文献
10.
较详细地讨论了单螺杆挤出机生产聚氯乙烯结皮发泡棒材的有关技术问题,包括挤出机和模具的结构参数、最佳配方设计和关键工艺条件控制,认为采用长径比大于25的普通单螺杆挤出机,在合理配方和工艺条件下,可生产高质量聚氯乙烯结皮发泡棒材,φ10 ̄38mm的棒材的生产可采用φ65mm螺杆的挤出机。 相似文献
11.
12.
木纹结皮发泡PVC异型材的挤出 总被引:2,自引:0,他引:2
用普通单螺杆挤出机和自制结皮发泡模具,应用不同树脂进行配方工艺试验,结果表明:利用不同材料的流动性差异,并结合模具进行设计,可以挤出木纹效果良好的PVC结皮发泡异型材。 相似文献
13.
14.
15.
微发泡硬质PVC/木粉体系型材的挤出 总被引:4,自引:0,他引:4
以植物纤维机制木粉取代通常的矿物填料,成功地制得了微发泡硬质PVC/木质体系的塑料型材,分析和讨论了型材的结构特点、工艺要点以及聚合物和木粉的界面改性。 相似文献
16.
17.
18.
The effects of chemical foaming agent (CFA) types (endothermic versus exothermic) and concentrations as well as the influence of all‐acrylic processing aid on the density and cell morphology of extrusion‐foamed neat rigid PVC and rigid PVC/wood‐flour composites were studied. Regardless of the CFA type, the density reduction of foamed rigid PVC/wood‐flour composites was not influenced by the CFA content. The cell size, however, was affected by the CFA type, independent of CFA content. Exothermic foaming agent produced foamed samples with smaller average cell sizes compared to those of endothermic counterparts. The experimental results indicate that the addition of an all‐acrylic processing aid in the formulation of rigid PVC/wood‐flour composite foams provides not only the ability to achieve density comparable to that achieved in the neat rigid PVC foams, but also the potential of producing rigid PVC/wood‐flour composite foams without using any chemical foaming agents. 相似文献
19.
发泡剂热分解特性及对硬质PVC挤出发泡结皮厚度及泡孔结构影响 总被引:1,自引:0,他引:1
分析比较了发泡剂AC、DDL101、DDL102、DDL103分解动力学特性和热力学特性,并研究了发泡剂特性对挤出发泡片材强度、密度、泡孔结构及结皮厚度的影响。 相似文献
20.
This study was conducted to characterize the mechanical properties of extrusion‐foamed neat rigid PVC and rigid PVC/wood‐flour composites by using endothermic and exothermic chemical foaming agents (CFAs). The specific elongation at break (ductility) of the samples was improved by foaming, while the opposite trend was observed for the tensile strength and modulus of the samples, regardless of the chemical foaming agent type. In addition, experimental results indicated that foaming reduced the Izod impact resistance of both neat rigid PVC and rigid PVC/wood‐flour composites but that this reduction was not statistically significant for the composites. A comparison between batch microcellular processing and extrusion foam processing was made, which demonstrated that foams with very fine cells (microcellular processed) exhibit better impact strength than foams with larger cells (extrusion processed with CFAs). 相似文献