PBS多少钱一公斤？
这个问题一搜，从十八块一公斤到四十五块一公斤，报价差得比丁二醇含量还多。有人说我买的十八的国产通用用得挺好，有人说我买的四十五的进口高端才叫完全降解。到底差在哪？
说实话，问PBS多少钱一公斤的人，大概率还没搞懂PBS这东西不是一个料——通用级、高降解级、玻纤增强级、食品级、医用级，每个分支价格都不一样。你拿通用级的价和医用级比，那不叫比价，叫被忽悠。
PBS就是聚丁二酸丁二醇酯，生物可降解塑料，由丁二酸和丁二醇缩聚制得，常用于包装、一次性用品、农业、医疗、3D打印。
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PBS（外企大厂）
通用级，参考价约25-38元/公斤。包装、一次性用品、农业。
高降解级，参考价约30-42元/公斤。堆肥降解、食品包装、环保应用。
医用级，参考价约35-45元/公斤。医疗器械、医用耗材、特殊应用。
国产PBS（中企大厂）
通用级，参考价约18-28元/公斤。性价比高，包装、一次性用品、农业。
高降解级，参考价约22-35元/公斤。堆肥降解、食品包装、环保应用。
玻纤增强级，参考价约20-32元/公斤。结构件、工业应用、汽车配件。
一句话总结：国产通用18-28块，国产高降解/玻纤增强20-35块，进口通用25-38块，进口高降解/医用30-45块。你要的是啥丁二醇含量和性能，决定了你该在哪一档选。
二、同是PBS，价差凭什么这么大
PBS的价格差，主要藏在四个地方。
第一，丁二醇来源不同。石油基丁二醇便宜，生物基丁二醇贵。生物基PBS更环保，但价格更高。
第二，降解等级不同。通用级便宜，高降解级贵。高降解需要特殊配方，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。同样是高降解级，进口比国产贵30-50%，贵的是品控和研发。
三、采购避坑：别让丁二醇骗了你
我见过太多采购，比价比到最后选了最便宜的十八的，然后做出来的制品降解太快、强度不够、客户退货，一次损失够买半年的好料。
PBS采购这行，水比你想的深。三个坑必须绕开：
第一，看降解速率和拉伸强度不看牌号。同一个牌号不同批次性能可能波动，拿到料先测降解速率和拉伸强度，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PLA当PBS卖，拿低纯度当高纯度卖。要COA、要丁二醇含量检测、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18块，做出来制品次品率5%；B料单价28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——比如要完全降解又要高强度、要软质又要耐热、要低成本又要医用级——那不是PBS的问题，是你需要的不是标准PBS，是改性PBS。
这时候可以看看宁波科隆新材目前在做的高性能改性PBS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PBS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，PBS行情一天一个样，丁二酸、丁二醇、催化剂、降解剂、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PBS这事儿，十八的和四十五的，差的不是二十七。
单价是门槛，选对丁二醇含量和性能才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出完全降解包装的方案。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PBS采购上踩过什么坑？是降解太快还是强度不够？评论区聊聊，点赞最高的三位，送一份PBS主流牌号选型对照表。
PBS和PLA有什么区别
PBS丁二醇含量怎么选
PBS和PBAT有什么区别
PBS改性料厂家怎么选
PBS注塑常见问题及解决
How much is PBS per kilogram?
PBS is not one material: GF-reinforced, food-grade, medical, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Imported PBS
general-purpose, approx. CNY 25-38/kg. packaging.
approx. CNY 30-42/kg. food packaging; eco-friendly applications.
medical, approx. CNY 35-45/kg. medical devices; special applications.
Domestic PBS
general-purpose, approx. CNY 18-28/kg. packaging.
approx. CNY 22-35/kg. food packaging; eco-friendly applications.
GF-reinforced, approx. CNY 20-32/kg. structural parts; industrial applications; automotive parts.
2. Why prices differ so much
Four factors: (1) composition — lower levels are cheaper; higher levels give better performance but cost more. (2) grade level — 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 PBS, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PBS solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PBS 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; PBS 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.
