注塑产品色差控制技术研究

色差是注塑生产中的常见缺陷，其牵涉因素众多，较难掌握。本文讨论了产生色差的主要因素及控制色差的实用方法为减少色差问题的产生提供了一些经验和方法。     

浅谈汽车塑料件涂料的色差控制

介绍了色差检测方法，以及塑料件色差评价方法，结合生产实际，阐述了塑料件色差影响因素及控制对策。     

建筑用氟涂料与喷涂技术

介绍了建筑用氟涂料的组成，喷涂工艺。结合实际经验，分析了涂膜产生色差的因素，提出了避免产生色差的原则性建议。     

色差仪及其在涂料生产中的应用

本论述了颜色的基本知识、观察颜色时的影响因素以及色差仪的构造，介绍了色差仪在涂料生产中的应用。     

车身色差的影响因素与整车厂施工工艺参数调整

简述了色差原理和判定方法,分析了引起车身色差的主要原因,从工艺参数调整角度进行了多因素试验,调整了车身色差,解决了车身色差问题。     

涂料零售店机器调色系统的颜色控制

介绍了涂料色差的评判方法及普通消费者对涂料颜色色差的认知,探讨了零售店机器调色系统色差产生的因素和控制措施。     

油漆车身色差问题的预防控制

结合某公司涂装车间成功经验,简要介绍了油漆车身色差产生的一些影响因素,着重介绍了色差控制规范以及色差问题的日常控制和预防方法,对有效预防和根治油漆车身色差问题具有重要的指导意义。     

汽车涂装中的色差

主要阐述了色差的基础知识、测量设备、评判标准、影响因素及车身油漆色差的控制方法。本文从材料、施工参数、输漆系统的角度分析了影响色差的因素,找出最佳的施工组合,更好地控制色差。     

涤纶纱线和织物的色差影响因素和控制措施探讨

探讨了涤纶纤维染色机理和色差评价方法,初步分析了涤纶纱线、织物在聚酯合成、纺丝以及纺织染整过程中存在的色差影响因素,并提出了控制色差的有效措施。     

轿车面漆色差控制技术及其应用

轿车的外观质量要求十分严格 ,从轿车面漆色差控制技术上介绍了色差系统基础理论、色差影响因素及其在生产中的应用。     

彩色双向拉伸聚丙烯胶带膜的研制

用平膜法制备了彩色双向拉伸聚丙烯（BOPP）薄膜,讨论了不同彩色母料、母料浓度对薄膜透光率的影响以及所制备彩色BOPP薄膜与国内通用BOPP彩色胶带色差的评价指标.结果表明,彩色母料PP5011A与PP5012的配合使用效果较好,按所述的配方制得的薄膜色相与国内通用彩色胶带相近,得到客户认可.     

Colour harmony of two‐colour combinations using a 3D colour configuration

Over the past few years, although many studies have investigated colour harmony, most of those used the planar colour configuration, which is not in line with the design requirements of real‐life products. Therefore, this study used 11 basic colours and five types of colour scheme techniques to derive 141 colour combinations applied upon a physical 3D colour configuration to observe the phenomena of colour harmony. The results show that colour harmony on a 3D colour configuration is different from that on a planar colour configuration, and can be divided into four phenomena: (i) lightness difference was found to determine the colour harmony while achromatic colour was configured with achromatic colour; (ii) lightness sum prompted colour harmony while chromatic colour was configured with achromatic colour; (iii) lightness sum and chroma sum were found to determine colour harmony while chromatic colour was configured with chromatic colour with a two‐colour hue angle difference >90°; and (iv) lightness sum and hue difference were a determination of colour harmony while chromatic colour was configured with chromatic colour with a two‐colour hue angle difference of ≤90°. On the basis of these phenomena, this study develops a colour harmony model based on the colour parameters, most of which are derived from the addition of the colour attributes of two colours.     

Clarification of differences between variable achromatic color and variable chromatic color methods in the Helmholtz–Kohlrausch effect

The Helmholtz–Kohlrausch effect consists of two different approaches: the variable achromatic color (VAC) and variable chromatic color (VCC) methods. In this article the difficult conceptual difference between the methods is clarified using new explanations with their schematic figures. The concept of loci with various parameters on B / L or L / Y ratios is completely different between the two methods. The VCC method can determine perceived lightness values for achromatic and chromatic colors in the whole color space. The VAC method gives perceived lightness deviation between reference achromatic color and each of the various test chromatic colors both kept at the same Munsell Value. The VAC method can never give any information on equiperceived lightness to test chromatic colors. Despite the difference between the two methods, misuse of the VAC method is sometimes found for perceived lightness studies of various chromatic colors, because of its ease in observations. An example is shown for the L scale of OSA‐UCS. © 2006 Wiley Periodicals, Inc. Col Res Appl, 31, 146–155, 2006     

ABS树脂的色差分析

通过3组不同的考察方法,测试了ABS树脂的白度及黄色指数,通过计算数值比较产品色差。通过对放置时间、烘干时间以及对不同尺寸样件的色差分析,提出了控制ABS树脂色差的方案。     

Unique hue data for colour appearance models. Part II: Chromatic adaptation transform

Unique hue settings of 185 observers under three room‐lighting conditions were used to evaluate the accuracy of full and mixed chromatic adaptation transform models of CIECAM02 in terms of unique hue reproduction. Perceptual hue shifts in CIECAM02 were evaluated for both models with no clear difference using the current Commission Internationale de l'Éclairage (CIE) recommendation for mixed chromatic adaptation ratio. Using our large dataset of unique hue data as a benchmark, an optimised parameter is proposed for chromatic adaptation under mixed illumination conditions that produces more accurate results in unique hue reproduction. © 2011 Wiley Periodicals, Inc. Col Res Appl, 2013     

POY色丝色差产生的原因及解决措施

通过对POY色丝产生色差原因的研究 ,认为色母粒的质量 ,注色机计量盘的选择 ,纺丝温度 ,压力等是POY色丝产生色差的主要原因     

色母粒及填充母粒生产与研究现状

根据近年来有关色母粒与填充母粒的研究报道,对颜填料预处理、母粒制备及性能进行了综合讨论,分析了色母粒与填充母粒生产和研究过程中存在的问题,并就母粒的发展提出了新的认识,为今后色母粒与填充母粒的研究开发提供借鉴。     

Colour-distance judgement and the influence of the background in colour reproduction

The influence of the background in colour reproduction can be described in colorimetric terms by the use of corrections to the colorimetric scaling factors. This leads to transformation formulae that describe the change of chromatic adaptation, and also to an extended definition of the so-called “colour of the state of chromatic adaptation.” The method leads to an improved reconciliation between the specification of colour-rendering properties in both colour photography and multicolour printing and the visual evaluation. Certain problems in colorimetry may also become more easily understandable by the incorporation of such peripheral influences. Whereas the physiologically related scaling-factor corrections are of first-order importance, it is shown that stray-light effects, which are physical contributing factors, are only of the second order.     

Investigations into surface visual quality of gas-assisted injection moulded polypropylene parts

Abstract

Although gas-assisted injection moulding (GAIM) provides many advantages compared with conventional injection moulding (CIM), its applications are limited to surface visual quality studies. In the present study, polypropylene plate parts designed with gas channels having five different types of cross-section but with same cross-sectional area were gas-assisted injection moulded. In addition, various plate thickness parts designed with semicircular gas channels of different radius were also moulded. The surface visual quality of GAIM parts was investigated via gloss and chromatics measurements. The effects of processing parameters and geometrical factors, introduced by part thickness, shape and associated dimensions of gas channels on glossy difference and chromatic aberration of GAIM parts were investigated. The effect on the surface visual quality of gas channel with fillet design and cavity surface with texturing treatment was also examined. It was found that glossy difference is very sensitive to the degree of crystallinity whereas gas channel residual skin melt thickness plays a dominant factor for chromatic aberration. The processing conditions significantly affect surface visual quality. Gas channel design of semicircular cross-section (shape A) provides a better surface visual quality than the other designs. In addition, in order to obtain best surface visual quality, the ratio of equivalent radius to plate thickness should be approximately equal to 2.3. Alternatively, surface visual quality can be improved by texturing treatment on the cavity surface of the core-side. The present study provided part design guidelines for choosing the most effective gas channel design to achieve the best surface visual quality.     

远红外丙纶POY的可纺性及纤维结构性能研究

讨论了研制远红外丙纶ＰＯＹ所用原料的共混方式、远红外母粒及降温母粒的选择与可纺性、纤维结构性能及功能性的关系,为成功研制各项性能优良的远红外细旦丙纶长丝奠定了技术基础。