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RHEOBYK - 我们的有机流变助剂

毕克化学甄选旗下40余支效果显著的有机流变助剂,整合为一组新的牌号。从而使得有机流变助剂在众多的产品中更加突出。

尽管整合在新的牌号中,同样的配方与同样的技术数据却从未改变,未来可以预见,这一类产品的辨识度会更加显著。

RHEOBYK包含原有的BYK-400系列与OPTIFLO家族以及其他相似产品

为水性环氧体系设计

受中国涂料市场推动,特别是货运集装箱涂料市场,在最近两年基于最新的环氧分散体的水性体系已经广泛用于海洋与防护市场。这类涂料颜料含量高,施工膜厚高,需要流变助剂提高抗流挂、防沉降等性能。

然而,市场上现有的流变助剂未能完全满足需求,尤其是在所有环氧分散体中还不稳定甚至无效,因此急需一种新技术。

RHEOBYK-440,一款基于聚酰胺技术的新型液体流变助剂应运而生,为现在的水性环氧体系提供特效的流变解决方案,作为毕克化学液态聚酰胺产品家族的一员,也可以用于多种其他水性体系。

不仅可以优化水性环氧的抗流挂与防沉降,RHEOBYK-440 适用于多种其他水性体系,例如获得良好的金属颜料定向。

优点

  • 特别为最新的水性环氧体系设计

    • 提高抗流挂和防沉降性能
    • 结构快速的回复。高剪变稀
    • 与固化剂混时流变性能稳定
    • 贮存粘度稳定

  • 易操作、易添加

    • 预活化,液态
    • 尤其适用后添加
    • 无需调整pH值;pH稳定

  • 不影响干膜性能(比如防腐、附着)

水性体系用不含VOC、APEO、Tin的缔合型增稠剂(HEUR),高假塑性流动行为

RHEOBYK-7600是一款无VOC、APEO、Tin的缔合型增稠剂(HEUR),用于水性体系时,可以获得高假塑性流动行为。RHEOBYK-7600在低剪切范围内显著增加黏度,当加入色浆时黏度稳定,提高色浆接受性。流变性能与RHEOBYK-TVS HEAT技术相当,还有更好的流动性。该助剂是液体,由于其特殊的组成,与体系很相容,因此易添加、处理。改善流挂趋势、贮存稳定性。在添加时无需专门调整pH值或控制温度。与高剪切有效的流变助剂搭配使用,可以实现最佳的加工性。

优点

  • 调色后黏度稳定
  • 提高色浆接受性
  • 与RHEOBYK-TVS HEAT技术相当的流变性能,且流动性更好
  • 提高抗流挂与贮存稳定性
  • 易操作
  • 无需调整pH值、无需控制温度
  • 不含VOC,APEO和Tin

VOC- APEO- and Tin-free Associative Thickener for Aqueous Systems, to Generate Highly Pseudoplastic Flow Behavior

RHEOBYK-7610 is a VOC-, APEO- and tin-free associative thickener for aqueous systems, to generate highly pseudoplastic flow behavior. RHEOBYK-7610 considerably increases the viscosity in the low shear range and also provides very good flow. The additive is liquid and therefore easy to handle. Storage stability is improved. It is not necessary to specifically adjust the pH value or control the temperature during incorporation. When combined with rheology additives which are effective in the high shear range, it enables an optimum processability. RHEOBYK-7610 is highly recommended for use in systems for airless application.

Benefits

  • Highly effective in the low shear range
  • Self-leveling properties with good anti-sagging
  • Stops dropping of coating systems
  • Thick layers by means of spray application (airless/airmix/HVLP)
  • Adds higher elasticity to the system
  • Easy incorporation
  • No pH value adjustment and no temperature control required
  • VOC-, APEO- and tin-free

VOC-free Associative Thickener for the High Shear Range

The associative thickener, RHEOBYK-L 1400 VF, is an additive that brings about a Newtonian flow behavior. Its use is recommended if the aqueous coating has an excessively strong shear thinning effect and the viscosity decreases too much during application. The product ensures that the viscosity in the high shear ranges, such as in brush or roller applications, remains at a high level. This results in a stronger brushability, an increase in the achievable coating thickness and a reduction in spattering. RHEOBYK-L 1400 VF is very versatile in terms of applications and can be used in a wide range of dispersions (acrylate, styrene acrylate, vinyl acetate, epoxy) as well as in alkyd emulsions. The additive is suitable for any production step and also for post-addition. RHEOBYK-L 1400 VF requires no temperature activation or control of the pH value.

Further Benefits

  • Easy incorporation
  • Excellent balance of flow behavior and leveling