无氟防水剂是什么？与含氟防水剂怎么选 What Is a Fluorine-Free Water Repellent (and How to Choose One)无氟防水剂是不含全氟化合物（PFOA / PFOS）的织物防水整理剂，常见为水性蜡乳液型。它的防水等级通常低于含氟产品，但在手感、色光影响和环保合规上更可控，适… A fluorine-free water repellent is a finishing agent free of PFOA / PFOS, most o…2026-11-05
PVC 内润滑与外润滑怎么选？聚酯蜡、氧化聚乙烯蜡、聚乙烯蜡的区别 Internal vs External PVC Lubrication: Polyester Wax, Oxidized PE Wax and PE Wax判断标准是"与 PVC 相容性"：相容性高、能进入分子链之间的叫内润滑（聚酯蜡、脂肪酸酯类），相容性低、迁移到熔体与金属界面的是外润滑（氧化聚乙烯蜡、聚乙烯蜡、… The dividing line is compatibility with PVC: highly compatible grades that slip …2026-11-05
碳氢清洗剂怎么选？馏程、闪点与安全边界 How to Choose a Hydrocarbon Cleaner: Distillation Range, Flash Point and Safety先定闭口闪点，再看馏程与 KB 值。闭口闪点在 60 ℃ 以上的品种不属于危险化学品，可常规仓储与运输；60 ℃ 以下的品种属于易燃液体，需要甲类仓储与相应资质… Fix the closed-cup flash point first, then the distillation range and KB value. …2026-11-05
紫外线吸收剂与受阻胺光稳定剂怎么配？ How to Combine UV Absorbers and Hindered Amine Light Stabilizers两者分工不同：紫外线吸收剂先吸收紫外光并转成热能，受阻胺光稳定剂（HALS）捕获已产生的自由基、中断降解链。耐候配方通常两者并用，比例按制品厚度、颜料体系与预期… They work at different stages: UV absorbers absorb UV and dissipate it as heat; …2026-11-05
蜡粉在色母粒与填充母粒中的作用与用量 The Role of Wax Powder in Colour and Filler Masterbatch蜡粉在母粒里主要起分散与加工润滑两个作用：它先润湿颜料或填料表面，帮助其在载体树脂里分散，再在加工时降低熔体粘度。用量没有通用值，通常按载体树脂、颜料/填料比例… Wax powder does two jobs in masterbatch: it wets pigment or filler surfaces to h…2026-11-05
异构烷烃溶剂油和脱芳烃溶剂油有什么区别？ Isoparaffin vs Dearomatized Solvent Oil: What Is the Difference?两者都是低芳烃溶剂，但工艺路线不同：异构烷烃是合成/深度加氢异构化得到的近纯异构烷烃，气味极低、芳烃接近零；脱芳烃溶剂油是石油馏分经加氢脱芳得到的窄馏分，成本低… Both are low-aromatic solvents but made differently: isoparaffins are nearly pur…2026-11-05
分散染料染涤纶：高温型与中温型怎么选 Dyeing Polyester with Disperse Dyes: High vs Medium Energy Types涤纶（PET）结构紧密、缺少可电离基团，只能用分散染料在高温下染色。选型按"能量等级"：高温型（S/E 型）匀染好、升华牢度高，适合热定型温度高的品种；中温型节… Polyester is compact and has no ionisable groups, so it can only be dyed with di…2026-11-05
COA、MSDS 和 TDS 分别是什么？采购化工原料时该向供应商要哪些文件 COA, MSDS and TDS Explained: Which Documents to Request from a Chemical Supplier三者回答三个不同问题：TDS 说"这个产品通常什么样"，COA 说"你收到的这一批实测是多少"，MSDS（SDS）说"怎么安全操作与应急"。采购时应三份都要：T… They answer three different questions: the TDS says what the product is normally…2026-11-05