耐乙二醇改性聚氨酯——化纤消光剂砂磨机专用料

           在化纤消光剂用二氧化钛的研磨过程中，全程使用乙二醇作为分散介质。

这种工况极其恶劣，集腐蚀性浸泡与高硬度粉体的高速冲刷于一体。

          普通及劣质聚氨酯材料在乙二醇环境中，极易出现吸水溶胀、软化变形、

 表面粉化及整体龟裂。更严重的是，会发生持续的掉粉、掉渣和碎片剥落。

大量细微的聚氨酯颗粒会混入消光剂浆料中，造成浆料杂质污染，肉眼即可观

察到剥落的聚氨酯颗粒。                                                                                                                              

         浆料里的聚氨酯颗粒杂质，会直接堵塞筛网、过滤不畅，管路与筛网频繁

堵料，生产被迫停机清理；带入纺丝工序后，极易造成纺丝断线、飘丝、废丝

增多，严重拉低成品良率。

           同时，含有聚氨酯颗粒的杂质浆料进入后续离心机，会加剧离心机滤网堵

塞，磨损转子并破坏动平衡。这将导致设备振动加大、负荷升高、故障频发，维

护成本大幅上升，致使整条生产线的稳定运行无法得到保障。

            专用的耐乙二醇改性聚氨酯，正是为了针对性解决上述所有痛点而生：它

在长期乙二醇浸泡下，能抵抗溶胀、变形和软化。其致密且高强度的材料结构，

不会产生掉粉、掉渣现象，也无聚氨酯颗粒析出混入浆料。

            它能确保浆料全程保持高洁净度、零杂质，避免筛网堵塞，保障过滤顺畅，

并稳步降低纺丝断头率。它从根本上杜绝了异物进入离心机，保护离心设备的稳

定运行，减少磨损、停机和维修。该产品适用于砂磨机筒体衬里、研磨盘、转子

及前后端盖密封等核心部件，拥有长达6年以上的稳定使用寿命。凭借对极端工

况的适应性和可靠的质量，其在化纤消光剂砂磨机应用领域的市场占有率超过

80%。因具备长效耐磨、稳产降本的优势，已成为行业内主流的**材料。

                                Ethylene Glycol Resistant Modified Polyurethane – Special Application Copy for Chemical Fiber Matting Agent Grinders

In the grinding of titanium dioxide for chemical fiber matting agents, ethylene glycol is used as the dispersion medium throughout the process. The working conditions are extremely harsh, combining corrosive immersion and high-hardness powder high-speed scouring.

Ordinary and inferior polyurethane materials are prone to water absorption and expansion, softening and deformation, surface pulverization and bulk cracking in ethylene glycol environments. More seriously, continuous powder shedding, residue chipping and fragment peeling will occur. A large number of fine polyurethane particles will mix into the matting agent slurry, causing impurity contamination of the slurry with visible peeled polyurethane particles to the naked eye.

Polyurethane particle impurities in the slurry will directly block the screen mesh, resulting in poor filtration, frequent material blockage in pipelines and screens, and forced production shutdown for cleaning. When carried into the spinning process, they easily cause spinning breakage, floating filaments and increased waste filaments, seriously reducing the finished product yield.

Meanwhile, impurity-containing slurry with polyurethane particles entering the subsequent centrifuge will aggravate clogging of the centrifuge filter screen, wear the rotor and damage dynamic balance. This leads to increased equipment vibration, higher load, frequent failures and substantially elevated maintenance costs, making stable operation of the entire production line unguaranteed.

The dedicated ethylene glycol resistant modified polyurethane targets and solves all the above pain points: it resists expansion, deformation and softening under long-term ethylene glycol immersion. With a dense and high-strength material structure, it produces no powder shedding, residue chipping or precipitation of polyurethane particles into the slurry.

It maintains high cleanliness and zero impurities of the slurry throughout the whole process, avoiding screen blockage and ensuring smooth filtration, and steadily reducing the spinning end breakage rate. It fundamentally prevents foreign matter from entering the centrifuge, protects the stable operation of centrifugal equipment, and reduces wear, shutdowns and maintenance. It is applicable to core components such as sand mill liners, grinding discs, rotors and front & rear end cover seals. It features a stable service life of more than 6 years. With extreme working condition adaptability and reliable quality, it holds a market share of over 80% in the application field of chemical fiber matting agent grinders. Offering long-term wear resistance and stable production & cost reduction, it has become the mainstream preferred material in the industry.