PCL多少钱一公斤？
这个问题一搜，从二十块一公斤到五十块一公斤，报价差得比分子量还多。有人说我买的二十的国产低分子量用得挺好，有人说我买的五十的进口高分子量才叫高性能。到底差在哪？
说实话，问PCL多少钱一公斤的人，大概率还没搞懂PCL这东西不是一个料——低分子量级、中分子量级、高分子量级、医用级、食品级，每个分支价格都不一样。你拿低分子量的价和高分子量比，那不叫比价，叫被忽悠。
PCL就是聚己内酯，由己内酯开环聚合制得，低熔点、生物可降解，常用于医用耗材、3D打印、包装、胶粘剂、涂料。
一、主流牌号报价（外企+中企）
先把市面上走量的牌号和参考价摆出来。以下为近期市场参考价，实时价格以当日询价为准。
进口PCL（外企大厂）
低分子量级，参考价约25-35元/公斤。胶粘剂、涂料、增塑剂。
中分子量级，参考价约30-42元/公斤。3D打印、包装、薄膜。
医用级，参考价约35-50元/公斤。医用耗材、药物载体、组织工程。
国产PCL（中企大厂）
低分子量级，参考价约20-30元/公斤。性价比高，胶粘剂、涂料、增塑剂。
中分子量级，参考价约24-38元/公斤。3D打印、包装、薄膜。
高分子量级，参考价约28-42元/公斤。结构件、工业应用、特殊制品。
一句话总结：国产低分子量20-30块，国产中/高分子量24-42块，进口低分子量25-35块，进口中/医用30-50块。你要的是啥分子量和性能，决定了你该在哪一档选。
二、同是PCL，价差凭什么这么大
PCL的价格差，主要藏在四个地方。
第一，分子量不同。低分子量便宜，高分子量贵。分子量越高，强度和韧性越好，但加工难度越大。
第二，纯度不同。工业级便宜，医用级贵。医用级需要高纯度，价格更高。
第三，用途不同。通用级便宜，医用/食品级贵。特殊用途需要特殊认证，价格更高。
第四，品牌和产地。进口溢价高但批次稳定，国产性价比高但牌号少。同样是中分子量级，进口比国产贵30-50%，贵的是品控和研发。
三、采购避坑：别让分子量骗了你
我见过太多采购，比价比到最后选了最便宜的二十的低分子量，然后做出来的制品强度不够、熔融太快、客户退货，一次损失够买半年的好料。
PCL采购这行，水比你想的深。三个坑必须绕开：
第一，看分子量和熔融指数不看牌号。同一个牌号不同批次性能可能波动，拿到料先测分子量和熔融指数，和COA对得上再用。别听销售说"差不多"，差不多就是差很多。
第二，警惕以次充好。有些贸易商拿PEG当PCL卖，拿低分子量当高分子量卖。要COA、要分子量检测、要原厂包装，三证合一才敢用。
第三，别只比单价，算综合成本。A料单价20块，做出来制品次品率5%；B料单价30块，次品率1%。算到每件制品上，B料反而更便宜。
四、标准牌号满足不了？看看改性方案
如果你发现标准牌号怎么选都差点意思——比如要高强度又要低熔点、要生物降解又要耐热、要低成本又要医用级——那不是PCL的问题，是你需要的不是标准PCL，是改性PCL。
这时候可以看看宁波科隆新材目前在做的高性能改性PCL方案，增韧、增强、耐热、阻燃这些方向都有对应牌号在做。有特殊需求的可以私信要一份改性PCL的报价参考，比自己买基料再加助剂调试，省的不只是钱，还有试错的时间。
说白了，标准料是大锅饭，改性料是定制菜。你的制品要求越高，越需要定制。
五、常用牌号，私信给你当日报价
上面的价格都是参考价，PCL行情一天一个样，己内酯、催化剂、分子量调节剂、汇率都在动。
如果你需要进口、国产这些品牌的具体牌号当日报价，私信我，发你一份实时价格表。不绕弯子，报实数。
写在最后
买PCL这事儿，二十的和五十的，差的不是三十。
单价是门槛，选对分子量和性能才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出医用耗材的方案。把账算到每件制品上，再加上次品退货损失，你才知道谁真便宜谁真贵。
你在PCL采购上踩过什么坑？是强度不够还是熔融太快？评论区聊聊，点赞最高的三位，送一份PCL主流牌号选型对照表。
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PCL加工常见问题及解决
How much is PCL per kilogram?
PCL is not one material: medical, food-grade, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Imported PCL
approx. CNY 25-35/kg. adhesives; coatings.
approx. CNY 30-42/kg. packaging; film.
medical, approx. CNY 35-50/kg.
Domestic PCL
approx. CNY 20-30/kg. adhesives; coatings.
approx. CNY 24-38/kg. packaging; film.
approx. CNY 28-42/kg. structural parts; industrial applications.
2. Why prices differ so much
Four factors: (1) molecular weight — lower levels are cheaper; higher levels give better performance but cost more. (2) purity — premium grades need special formulations and cost more. (3) application — special applications need special formulations or certification and cost more. (4) Brand and origin — imports carry a premium but offer batch stability; for the same grade, imports cost 30-50% more than domestic, paying for quality control and R&D.
3. Procurement pitfalls
The cheapest material often fails on performance and triggers customer returns. Three traps to avoid:
First, test key properties against the COA instead of trusting the grade name — performance of the same grade can fluctuate between batches. Second, watch out for substitution fraud: some traders pass off cheaper or recycled material as the real thing; demand the COA, a test report and original packaging before use. Third, don't compare unit price alone — calculate total cost per finished part, including rejected-goods loss; a higher-priced grade with a 1% defect rate is often cheaper than a low-priced one with 5% rejects.
4. Standard grades not enough? Consider modified compounds
If standard grades always fall short — for example you need flame retardancy AND high transparency, reinforcement AND chemical resistance, or low cost AND food grade — you don't need standard PCL, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PCL solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PCL quote reference — it saves not only money but also trial-and-error time.
In plain terms: standard grades are a big pot of shared rice; modified compounds are a dish cooked to order. The higher your requirements, the more you need customization.
5. Popular grades — same-day quotes via message
All prices above are references; PCL prices change daily as feedstocks and exchange rates move. If you need same-day quotes for specific grades, message us and we will send a live price sheet. No beating around the bush — real numbers.
Final words
Unit price is the threshold; choosing the right grade and performance is the baseline. Do the math per finished part, add rejected-goods loss, and you will know who is truly cheap and who is truly expensive.
What pitfalls have you hit when buying this material? The three most-liked comments will receive a grade selection guide.
