算笔成本账：PVC型材厂每吨料里CPE抗冲改性剂占比不小，CPE副牌比正牌便宜几百块一吨，一个月用上几十吨，省下来的钱看着不少。但做PVC型材的都懂，CPE的氯含量差两个百分点，型材低温抗冲击就掉一档——冬天一摔就裂，整批窗框退货。这笔账到底划不划算，先得把CPE副牌的门道算清楚。
结论先说：CPE副牌能用，但氯含量和门尼粘度必须对上PVC配方，对不上就进挤出线，整批型材低温冲击不合格。今天把潍坊亚星化学、日科化学、山东星兴这几家国产CPE企业的副牌门道，一次讲透。
CPE是什么？国内产能谁在领跑
CPE是氯化聚乙烯，由高密度聚乙烯氯化制得，含氯量一般在25%到42%之间，特点是耐候、耐油、抗冲击，是PVC最主要的抗冲改性剂，大量用于PVC型材、管材、板材、电线电缆，也做橡胶制品和磁性材料黏结剂。
国内CPE产能主要集中在山东。潍坊亚星化学是国内首家从事CPE工业生产的企业，在行业深耕几十年，氯碱配套和连续氯化工艺成熟，是行业老牌龙头；日科化学在山东，是塑料和橡胶改性剂领域的上市企业，综合改性剂产能规模大，CPE/MC改性剂是其产品之一；山东星兴等也是区域型CPE生产厂家。此外江苏科利达、浙江巨化、安徽天辰也是CPE重要产能方。国内CPE总产能已达百万吨级。
CPE副牌：氯含量和门尼粘度是两条硬杠
CPE副牌，是原厂同一牌号体系里检验指标小幅偏离的批次。落到CPE上，副牌最常见的差异点集中在四项：氯含量偏差、门尼粘度波动、残余结晶度偏高、色相深浅不一。
为什么这几项关键？氯含量决定CPE的增塑和抗冲效率，含氯量偏了，PVC配方里的添加量就得跟着调；门尼粘度影响加工流变，粘度高了挤出吃力、低了型材发软。做PVC型材，CPE加多加少、氯含量准不准，直接关系低温抗冲。
和回料的区别：CPE回料是型材、管材破碎再造，已经受过热历史，抗冲和耐候掉档；CPE副牌是原厂原生氯化聚乙烯，只是个别指标小幅偏离。做PVC窗框，用副牌是"氯含量够不够"的问题，用回料是"冬天裂不裂"的问题。
潍坊亚星化学：国产CPE老牌龙头
亚星化学在山东潍坊，是国内首家从事氯化聚乙烯工业生产的企业，行业深耕几十年，自有氯碱配套，连续氯化工艺成熟。它的CPE产品在PVC型材、管材圈有几十年口碑，技术改造后装置产能稳定在数万吨级。
亚星副牌料的特点是：老牌企业批次管理规范，氯含量记录齐全；通用CPE牌号如135A等型材常用型号量大；副牌以门尼粘度和色相小幅偏离为主，适合PVC型材、管材、板材等对成本敏感的抗冲改性。高端耐候型材仍建议正牌。
适用场景：PVC型材、管材、板材、电线电缆护套、橡胶制品。
日科化学：改性剂领域上市企业
日科化学在山东潍坊，是塑料和橡胶改性剂领域的上市企业，综合改性剂产能规模大，ACR加工助剂、发泡调节剂、CPE/MC抗冲改性剂都有，下游覆盖PVC制品全行业。
日科副牌料的特点是：改性剂产品线齐全，客户能一站式配齐；CPE/MC抗冲改性剂与ACR配套使用经验多；副牌以门尼粘度和残余结晶度小幅波动为主，适合PVC型材、管材、发泡制品的改性掺混。
适用场景：PVC型材、管材、发泡板材、电线电缆、橡胶改性。
山东星兴：区域型CPE生产厂家
山东星兴是山东区域型CPE生产厂家，在本地PVC制品圈有一定客户基础，产品以通用CPE牌号为主，供应当地型材和管材厂。
星兴副牌料的特点是：区位贴近山东PVC产业带，交货快；以通用牌号为主，价格亲民；副牌批次建议逐批确认氯含量，适合本地型材和管材厂小批量掺混。采购时建议直接对接厂家核验批次和检测单。
适用场景：PVC型材、管材、一般板材、橡胶杂件改性。
CPE副牌避坑指南
第一，氯含量必须对上。CPE按含氯量分档，做PVC型材常用36%左右的型号，拿错氯含量，抗冲效率直接掉档，型材冬天开裂。
第二，门尼粘度要测。门尼高了挤出费劲、低了型材尺寸不稳，换副牌前先测粘度，别拿错批次直接上机。
第三，残余结晶度要看。残余结晶度高的CPE和PVC相容性差，型材表面发雾、抗冲不稳。
第四，户外耐候型材别用副牌。有长期户外耐候要求的塑钢型材，CPE要选正牌并做老化测试，副牌只用于室内和一般制品。
科隆仓库现货｜国产CPE型材掺混直供
科隆在宁波仓库常备国产CPE副牌现货，主推品牌覆盖潍坊亚星化学、日科化学、山东星兴等国内CPE头部企业。主要牌号涵盖135A等PVC型材、管材常用型号，包装分大包装与小包装两种，不同氯含量按制品厂配方分仓备货。
仓库现货通常在3000-6000吨：小包副牌备货500-800吨，箱装副牌备货200-400吨，大包料/吨包料备货2500-4800吨。
供应保障走原厂原包直采：科隆与CPE头部企业渠道直接对接，副牌料保留原厂原包标识，不拆包不混批；客户报氯含量和用途，科隆从原包批次里匹配现货，氯含量和门尼粘度随货可查。
选型口诀与案例
国产CPE副牌怎么选？记住四句话：氯含量先对档位，门尼粘度要测，残余结晶度别高，户外耐候型材不碰副牌。
潍坊一家做塑钢型材的挤出厂，原来一直用亚星CPE正牌做抗冲改性，每吨成本偏高。今年改用科隆供的日科化学CPE副牌135A，到货先测氯含量和门尼粘度在配方范围，批量挤出后型材低温落锤冲击合格，成品窗框通过冬储测试，每吨原料成本降了近九百元。车间主任说：室内塑钢型材又不是外墙耐候件，氯含量对、粘度稳，副牌完全顶得住。
Calculate the cost: PVC profile mills have a significant proportion of CPE impact modifiers per ton. CPE sub-brands are only a few hundred yuan per ton cheaper than genuine ones, and you can use dozens of tons a month, saving a considerable amount of money. But anyone in the PVC profile industry knows that if the chlorine content in CPE differs by two percentage points, the low-temperature impact resistance drops by a notch—in winter, they crack easily, and the whole batch of window frames is returned. Whether this is really worth it or not, we first need to figure out the tricks of the CPE sub-brand.
Conclusion First: CPE sub-brands are usable, but the chlorine content and Mooney viscosity must match the PVC formula. If not, the extrusion line will be used, and the whole batch of profiles will fail low-temperature impact standards. Today, I'll thoroughly explain the sub-brand secrets of Weifang Yaxing Chemical, Rike Chemical, and Shandong Xingxing. What is
CPE? Who leads domestic production capacity
CPE is chlorinated polyethylene, made by chlorinating high-density polyethylene, with chlorine content generally between 25% and 42%. Its characteristics are weather resistance, oil resistance, and impact resistance. It is the main impact modifier for PVC, widely used in PVC profiles, pipes, panels, wires and cables, and also as a rubber product and magnetic material binder.
Domestic CPE production capacity is mainly concentrated in Shandong. Weifang Yaxing Chemical is the first domestic enterprise engaged in CPE industrial production. It has been deeply involved in the industry for decades, with mature chlor-alkali supporting and continuous chlorination processes, making it a long-established industry leader. Rike Chemical, located in Shandong, is a listed company in the plastics and rubber modifier sector, with large comprehensive modifier production capacity. CPE/MC modifiers are among its products; Shandong Xingxing and others are also regional CPE manufacturers. In addition, Jiangsu Kelida, Zhejiang Juhua, and Anhui Tianchen are also important CPE producers. Domestic CPE total capacity has reached the million-ton level.
CPE Sub-brand: Chlorine content and Mooney viscosity are two hard bars
CPE sub-brand, and are batches with slight deviations in inspection indicators within the same original factory grade system. For CPE, the most common differences in sub-brands are concentrated in four areas: chlorine content deviation, Mooney viscosity fluctuations, high residual crystallinity, and varying hue depth.
Why are these key points? Chlorine content determines CPE's plasticizing and impact resistance efficiency; if the chlorine content is off, the amount added in the PVC formula must be adjusted accordingly; Mooney viscosity affects processing rheology; high viscosity makes extrusion difficult, low viscosity causes the profile to soften. When making PVC profiles, the amount of CPE added and the chlorine content are directly related to low-temperature impact resistance. Difference between
and recycled material: CPE recycled material is made by crushing and remanufacturing profiles and pipes, which have already suffered from overheating, causing impact resistance and weather resistance to decline; CPE secondary brand is original original chlorinated polyethylene, with only slight deviations in certain indicators. For PVC window frames, using secondary brands is a matter of "sufficient chlorine content," while using recycled material is a question of "whether it cracks in winter."
Weifang Yaxing Chemical: A long-established domestic CPE leader
Yaxing Chemical is the first domestic enterprise in Weifang, Shandong, engaged in the production of chlorinated polyethylene (chlorinated polyethylene). It has been deeply involved in the industry for decades, with its own chlor-alkali supporting products and mature continuous chlorination processes. Its CPE products have enjoyed decades of reputation in the PVC profile and pipe industry, and after technological upgrades, the plant's capacity has stabilized at tens of thousands of tons. The characteristics of
Yaxing's secondary brand materials are: standardized batch management by established enterprises, with complete chlorine content records; General CPE grades such as 135A are commonly used in large quantities; The secondary brand mainly features slightly deviated Mooney viscosity and hue, suitable for cost-sensitive impact modification of PVC profiles, pipes, and sheets. High-end weather-resistant profiles are still recommended to be genuine brands.
Applicable Scenarios: PVC profiles, pipes, sheets, wire and cable sheaths, rubber products.
Rike Chemical: Listed company in the modifier field
Rike Chemical is located in Weifang, Shandong, a listed company in the plastic and rubber modifier sector, with large comprehensive modifier production capacity, including ACR processing aids, foaming regulators, and CPE/MC impact modifiers, with downstream coverage covering the entire PVC product industry. The characteristics of
Rike Sub-brand materials are: a complete product line of modifiers, enabling customers to complete everything in one stop; CPE/MC impact modifiers have extensive experience in pairing with ACR; The secondary brand mainly fluctuates slightly in Mooney viscosity and residual crystallinity, suitable for modification and blending of PVC profiles, pipes, and foamed products.
Applicable Scenarios: PVC profiles, pipes, foam sheets, wires and cables, rubber modification.
Shandong Xingxing: Regional CPE Manufacturer
Shandong Xingxing is a regional CPE manufacturer in Shandong, with a certain customer base in the local PVC product circle. Its products mainly use general CPE grades, supplying local profiles and pipe factories. The characteristics of
Xingxing sub-brand materials are: close to the Shandong PVC industrial belt, fast delivery; Mainly general grades, affordable prices; For sub-brand batches, it is recommended to verify chlorine content batch by batch, suitable for small-batch mixing of local profiles and pipe factories. When purchasing, it is recommended to directly coordinate with the manufacturer for batch verification and inspection reports.
Applicable scenarios: modification of PVC profiles, pipes, general boards, and rubber miscellaneous parts.
CPE Sub-brand Pitfall Guide
First, chlorine content must be accurate. CPE is classified by chlorine content; commonly used PVC profiles with about 36% chloride content, if the chlorine content is incorrect, impact resistance will drop and the profile will crack in winter.
Second, test Mooney viscosity. If Mooney is too high, extrusion is difficult; if too low, profile dimensions are unstable. Test viscosity before switching sub-brands; don't pick the wrong batch and machine it directly.
Third, check residual crystallinity. CPE with high residual crystallinity has poor compatibility with PVC, resulting in fogging on the profile surface and unstable impact resistance.
Fourth, do not use secondary brands for outdoor weather-resistant profiles. For plastic steel profiles with long-term outdoor weather resistance requirements, select genuine CPE and undergo aging tests; secondary brands are only used for indoor and general products.
Cologne warehouse in-stock | Domestic CPE profiles mixed and direct supply
Cologne maintains domestic CPE sub-brand stock at the Ningbo warehouse, with main brands covering leading domestic CPE companies such as Weifang Yaxing Chemical, Rike Chemical, and Shandong Xingxing. Main grades cover commonly used PVC profiles and pipes such as 135A, with packaging in large and small packaging. Different chlorine content is stocked separately according to the manufacturer's formula.
warehouse stock is usually 3000-6000 tons; small sub-brand stocks 500-800 tons; sub-brand containerized 200-400 tons; large packages/ton packaging stocks 2500-4800 tons.
Supply guarantees direct sourcing from original factory and packaging: Cologne directly connects with leading CPE companies' channels, retains original factory packaging markings, and does not unpack or mix batches; Customers report chlorine content and usage, Cologne matches spot goods from original packaged batches, and chlorine content and Mooney viscosity can be checked with the goods.
Selection Mnemonics and Cases
How to choose a domestic CPE secondary brand? Remember these four points: first set the chlorine content level, measure Mooney viscosity, don't have high residual crystallinity, and avoid using secondary brands for outdoor weather-resistant profiles.
Weifang is an extrusion factory specializing in plastic steel profiles. Previously, Yaxing CPE was genuine for impact modification, but the cost per ton was relatively high. This year, they switched to the Rike Chemical CPE sub-brand 135A supplied by Cologne. Upon arrival, chlorine content and Mooney viscosity were tested within the formula. After batch extrusion, the profiles passed low-temperature drop hammer impact and passed inspection. The finished window frame passed winter storage testing, reducing raw material costs by nearly 900 yuan per ton. The workshop director said: Indoor plastic steel profiles are not weather-resistant exterior walls; the chlorine content is correct, the viscosity is stable, and the secondary brand can fully withstand the pressure
