先算一笔成本账：做改性沥青的一吨SBS正牌一万多，一年用几百吨，光SBS一项就是大几百万；用副牌，一吨省一千多，一年下来能省下两台注塑机的钱。问题是SBS这个料，副牌里线型和星型混着、充油和不充油混着、苯乙烯含量差几个百分点，买错一档，沥青改性的软化点和低温延度就跟着掉。今天把中石化巴陵、中石油独山子、广东众和这三家国产SBS头部企业的副牌，摆开对比。
结论先说：SBS副牌能省钱，但结构（线型还是星型）、充油比例、苯乙烯含量三项必须先对，对不上就是省钱变赔本。
SBS是什么？国内产能格局
SBS是苯乙烯-丁二烯-苯乙烯三嵌段共聚物，热塑性弹性体的代表品种，常温下像橡胶、高温下能像塑料一样加工，大量用于道路改性沥青、防水卷材、鞋材、热熔胶、塑料改性增韧。SBS是TPE/TPV的重要基材，也是国产热塑性橡胶里发展成熟的品种。
国内SBS产能集中度高，中石化巴陵石化是国内SBS技术发源地，年产能约35万吨，占全国约三成，排在首位；中石油独山子石化是西北重要SBS/SSBS基地；广东众和化塑地处茂名，依托当地石化资源做SBS加工和混配，在华南鞋材和胶粘剂圈有口碑。此外燕山石化、茂名石化、长鸿高科等也是重要产能方。
SBS副牌：结构和充油是两个分水岭
SBS副牌，是原厂同一牌号体系里检验指标小幅偏离的批次。SBS这个料，偏差常出现在三项：分子结构（线型/星型）偏差、充油比例波动、苯乙烯含量和扯断伸长率波动。
为什么盯这三项？SBS的性能几乎由结构和苯乙烯含量决定，线型偏软、星型偏韧，改性沥青要星型、鞋材要线型，用错结构直接做不出产品。充油比例影响硬度和加工性，苯乙烯含量影响拉伸和回弹。
和回料的区别：SBS回料是鞋底、沥青改性废料、杂件破碎再造粒，已经热历史老化，性能波动大；SBS副牌是原厂原生嵌段共聚物粒子，只是个别指标小幅偏离。做道路改性沥青，用副牌是“软化点够不够”的问题，用回料是“这条路能撑几年”的问题。
中石化巴陵石化：SBS技术发源地
中石化巴陵石化是国内SBS技术发源地，年产能约35万吨，占全国约三成，产品覆盖线型、星型、充油多个牌号，YH系列是其主力商标，长期绑定道路沥青改性、鞋材、胶粘剂下游。
副牌料的特点：技术积淀深、牌号体系全，批次管理规范；星型副牌适合道路改性沥青和防水卷材，线型副牌适合鞋材和热熔胶；湖南产能，到华南和华东运输距离适中。
适用场景：道路改性沥青、防水卷材、鞋材、热熔胶、塑料增韧。
中石油独山子：西北SBS基地
中石油独山子石化是西北重要的合成橡胶基地，SBS和SSBS都有布局，依托中石油丁二烯和苯乙烯资源，产品在西北、西南改性圈有稳定客户。
副牌料的特点：央企体系检测规范，产品稳定性有保障；西北产能到华东运距远，适合批量大、不赶急单的道路沥青改性和防水卷材；线型和星型都有。
适用场景：道路改性沥青、防水卷材、一般橡胶制品、改性基料。
广东众和：华南加工混配主力
广东众和化塑地处茂名，依托当地石化资源做SBS加工、混配和改性，在华南鞋材、热熔胶和TPE圈有口碑，是华南地区SBS流通和改性的重要环节。
副牌料的特点：华南本地货源，珠三角鞋材和胶厂就近提货方便；以线型和充油牌号为主，适合鞋材、热熔胶、TPE改性；混配经验丰富，可按客户需求调软硬。
适用场景：鞋材、热熔胶、TPE改性、塑料增韧、一般橡胶制品。
SBS副牌避坑指南
第一，结构必须对路。改性沥青要星型、鞋材要线型，副牌里结构混着卖是大忌，下单前先确认分子结构。
第二，充油比例必须问清。充油SBS和不充油SBS硬度差一大截，做鞋材和做胶的需求完全不同，别拿错档。
第三，苯乙烯含量和扯断伸长率必须测。这两项直接决定拉伸和回弹，做受力件要先小样验证。
第四，道路改性别拿回料赌。沥青改性料直接铺在路上，副牌要大厂原生，回料坚决不碰。
科隆仓库现货｜国产SBS原厂原包直采
科隆在宁波仓库常备国产SBS副牌现货，主推品牌覆盖中石化巴陵、中石油独山子、广东众和三家国内头部企业。主要牌号涵盖线型、星型、充油多个常用型号，包装分大包装与小包装两种，按结构和牌号分批备货。
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：三家头部企业原厂原包直采，包装、标签、批号完整，线型星型分开码放；小包副牌和箱装副牌方便鞋材胶厂小批量试样，大包料和吨包料适合沥青改性厂批量切料，结构牌号不混批。
选型口诀与案例
国产SBS副牌怎么选？记住四句话：结构先对路，充油要问清，拉伸先小样，路改别用回料。
绍兴一家做热熔胶的厂，此前一直用巴陵SBS正牌做胶基料，每吨成本高。今年改用科隆供的巴陵线型SBS副牌，原厂原包，苯乙烯含量和扯断伸长率随货可查，先拿一吨小样做胶测试，剥离强度和开放时间都达标，批量切料后每吨原料成本降了一千多元。老板说：做热熔胶，副牌指标够，为什么要花正牌的钱？
Let's first calculate the costs: a ton of SBS for modified asphalt costs over 10,000 yuan per ton, and a few hundred tons are used annually. Just SBS alone costs several million; Using sub-brands saves over 1,000 per ton, saving the cost of two injection molding machines in a year. The problem is that SBS material mixes linear and star-shaped sub-brands, oil-filled and unoiled types, and styrene content differs by several percentage points. If you buy the wrong grade, the softening point and low-temperature ductility of modified asphalt will also drop. Today, I'm comparing the sub-brands of three leading domestic SBS companies: Sinopec Baling, PetroChina Dushanzi, and Guangdong Zhonghe.
Conclusion First: SBS sub-brands can save money, but the structure (linear or star-shaped), oil filling ratio, and styrene content must be matched first; if they don't match, it's a loss for money. What is
SBS? Domestic production capacity
SBS is a styrene-butadiene-styrene three-block copolymer, a representative type of thermoplastic elastomer. At room temperature, it can be processed like rubber and at high temperatures, like plastic. It is widely used in road modified asphalt, waterproof membranes, footwear materials, hot melt adhesives, and plastic modification and toughening. SBS is an important base material for TPE/TPV and is also a mature domestic thermoplastic rubber variety.
Domestic SBS capacity concentration is high. Sinopec Baling Petrochemical is the birthplace of SBS technology in China, with an annual capacity of about 350,000 tons, accounting for about 30% of the national total, ranking first; PetroChina Dushanzi Petrochemical is an important SBS/SSBS base in Northwest China; Guangdong Zhonghe Chemical Plastics is located in Maoming, relying on local petrochemical resources for SBS processing and blending, and has a good reputation in South China's footwear and adhesive industry. In addition, Yanshan Petrochemical, Maoming Petrochemical, and Changhong Hi-Tech are also important capacity players.
SBS sub-brand: Structural and oil-filled are two watershed points
SBS sub-brands, which are batches with slight deviations in inspection indicators within the same original factory grade system. SBS material deviations often occur in three areas: molecular structure (linear/star) deviation, fluctuation in oil-filled ratio, and fluctuations in styrene content and elongation at break.
Why focus on these three? The performance of SBS is almost entirely determined by structure and styrene content: the linear shape is soft, the star shape is tough, modified asphalt requires star-shaped, and the shoe material needs linear shape. Using the wrong structure directly cannot produce the product. The oil-filled ratio affects hardness and processability, while the styrene content affects tensile and rebound materials.
Difference from recycled material: SBS recycled material is made from shoe soles, asphalt modified waste, and miscellaneous parts crushed and repelled, which have undergone thermal aging and have large performance fluctuations; SBS secondary products are original factory block copolymer particles, with only slight deviations in some indicators. For road modified asphalt, using sub-brands is a matter of "whether the softening point is sufficient," and using recycled material is a question of "how many years this road can last."
Sinopec Baling Petrochemical: The birthplace of SBS technology
Sinopec Baling Petrochemical is the domestic origin of SBS technology, with an annual capacity of about 350,000 tons, accounting for about 30% of the national total. Its products cover multiple grades including line-type, star-shaped, and oil-filled types. The YH series is its main trademark, long-term linked to downstream products such as road asphalt modification, shoe materials, and adhesives. Characteristics of
sub-brand materials: deep technical accumulation, complete grade system, standardized batch management; Star-shaped sub-brand is suitable for road-modified asphalt and waterproof membranes, linear sub-brand is suitable for footwear materials and hot-melt adhesives; Hunan production capacity, moderate transportation distance to South and East China.
Applicable scenarios: road-modified asphalt, waterproof membranes, footwear materials, hot melt adhesives, plastic toughening.
PetroChina Dushanzi: Northwest SBS base
PetroChina Dushanzi Petrochemical is an important synthetic rubber base in Northwest China, with layouts in both SBS and SSBS, relying on PetroChina's butadiene and styrene resources, with stable customers in the Northwest and Southwest modification circles.
Characteristics of sub-brand materials: standardized testing by central enterprise system, ensuring product stability; Northwest production capacity has long transportation distances to East China, suitable for large batches and road asphalt modification and waterproof membranes that do not require urgent orders; Available in both linear and star-shaped types.
Applicable scenarios: road-modified asphalt, waterproof membranes, general rubber products, modified base materials.
Guangdong Zhonghe: Main force in South China processing and mixed mixing .
Guangdong Zhonghe Chemical Plastics is located in Maoming, relying on local petrochemical resources for SBS processing, blending, and modification. It enjoys a reputation in the South China footwear materials, hot melt adhesive, and TPE circles, and is an important link in SBS distribution and modification in South China.
Characteristics of sub-brand materials: local South China sources, convenient nearby pickup from Pearl River Delta shoe material and rubber factories; Mainly based on line shapes and oil-filled grades, suitable for shoe materials, hot melt adhesives, and TPE modification; Rich mixing experience, can adjust hardness according to customer requirements.
Applicable scenarios: shoe materials, hot melt adhesives, TPE modification, plastic toughening, general rubber products.
SBS Secondary Brand Pitfall Guide
First, the structure must match the road. Modified asphalt should be star-shaped, footwear materials should be linear. Mixing structures in secondary brands is a big taboo. Confirm molecular structure before ordering.
Second, make sure to check the oil-filled ratio. Oil-filled SBS and non-oiled SBS have much different hardness; the requirements for shoe materials and rubber are completely different, so don't choose the wrong one.
Third, styrene content and elongation at break must be measured. These two directly determine tensile and spring-back properties; when making load-bearing parts, small samples must be verified first.
Fourth, gambling on road sex change with recycled materials. Asphalt modified material is laid directly on the road, sub-brands must be original from major factories, and recycled materials are strictly not touched.
Cologne warehouse stock | Domestic SBS original factory direct packaging
Cologne maintains domestic SBS sub-brand stock at the Ningbo warehouse, with main brands covering Sinopec Baling, PetroChina Dushanzi, and Guangdong Zhonghe—three leading domestic companies. Main grades include line-type, star-shaped, and oil-filled models, with packaging in large and small packages, stocked in batches according to structure and grade.
Warehouse stock is usually between 3000-6000 tons: small sub-brand stocks 500-800 tons, boxed sub-brand stocks 200-400 tons, large packages/ton stocks 2500-4800 tons.
Supply guarantees direct sourcing from original factory and packaging: three leading companies source original packages directly, complete packaging, labels, batch numbers, and separate linear and star types; Small sub-brands and boxed sub-brands facilitate small-batch sampling for shoe material glue factories, large and ton sub-brands are suitable for batch cutting at asphalt modification plants, and structural grades are not mixed batches.
Selection tips and cases
How to choose domestic SBS sub-brands? Remember these four points: structure must first match the road, oil filling must be thorough, draw the sample first, and don't use recycled material for road improvement.
Shaoxing is a hot melt adhesive factory that previously used Baling SBS genuine brand for base material, with high cost per ton. This year, they switched to using Baling linear SBS sub-brand supplied by Cologne, original factory packaging. Styrene content and elongation at break can be checked on delivery. First, they tested a small sample with a ton of glue. Peel strength and opening time both met standards. After batch cutting, the raw material cost per ton dropped by over 1,000 yuan. The boss said: For hot melt adhesive, the sub-brand has sufficient standards, so why spend money on genuine brand?
