PB多少钱一公斤？
这个问题一搜，从十块一公斤到二十八块一公斤，报价差得比顺式含量还多。有人说我买的十块的国产通用用得挺好，有人说我买的二十八的进口高顺式才叫高端。到底差在哪？
说实话，问PB多少钱一公斤的人，大概率还没搞懂PB这东西不是一个料——高顺式、低顺式、中乙烯基、高乙烯基、充油级，每个分支价格都不一样。你拿通用级的价和高顺式比，那不叫比价，叫被忽悠。
PB就是聚丁二烯，由丁二烯聚合制得，高弹性、低温柔性好，常用于轮胎、橡胶制品、HIPS改性、ABS改性、粘合剂。
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PB（外企大厂）
高顺式级，参考价约15-22元/公斤。轮胎、橡胶制品、HIPS改性。
低顺式级，参考价约18-25元/公斤。ABS改性、橡胶制品、特殊应用。
高乙烯基级，参考价约20-28元/公斤。特殊橡胶、粘合剂、高端应用。
国产PB（中企大厂）
高顺式级，参考价约10-16元/公斤。性价比高，轮胎、橡胶制品、HIPS改性。
低顺式级，参考价约12-19元/公斤。ABS改性、橡胶制品、特殊应用。
充油级，参考价约11-18元/公斤。轮胎、橡胶制品、特殊应用。
一句话总结：国产高顺式10-16块，国产低顺式/充油11-19块，进口高顺式15-22块，进口低顺式/高乙烯基18-28块。你要的是啥顺式含量和性能，决定了你该在哪一档选。
二、同是PB，价差凭什么这么大
PB的价格差，主要藏在四个地方。
第一，顺式含量不同。低顺式便宜，高顺式贵。顺式含量越高，弹性和低温柔性越好，但价格更高。
第二，乙烯基含量不同。低乙烯基便宜，高乙烯基贵。高乙烯基需要特殊催化剂，价格更高。
第三，充油与否。无油通用便宜，充油级略贵但加工性好。
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。同样是高顺式级，进口比国产贵30-50%，贵的是品控和研发。
三、采购避坑：别让顺式含量骗了你
我见过太多采购，比价比到最后选了最便宜的十块的，然后做出来的制品弹性差、低温脆、客户退货，一次损失够买半年的好料。
PB采购这行，水比你想的深。三个坑必须绕开：
第一，看顺式含量和门尼粘度不看牌号。同一个牌号不同批次性能可能波动，拿到料先测顺式含量和门尼粘度，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。有些贸易商拿再生胶当PB卖，拿低顺式当高顺式卖。要COA、要顺式含量检测、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10块，做出来制品次品率5%；B料单价16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——比如要高弹性又要高强度、要低温柔性又要耐热、要低成本又要特殊级——那不是PB的问题，是你需要的不是标准PB，是改性PB。
这时候可以看看宁波科隆新材目前在做的高性能改性PB方案，玻纤增强、阻燃、耐候、导电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PB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，PB行情一天一个样，丁二烯、催化剂、充油剂、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PB这事儿，十块的和二十八的，差的不是十八。
单价是门槛，选对顺式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，是一公斤能做出高弹性轮胎的方案。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PB采购上踩过什么坑？是弹性差还是低温脆？评论区聊聊，点赞最高的三位，送一份PB主流牌号选型对照表。
PB和聚丁二烯有什么区别
PB顺式含量怎么选
PB和BR有什么区别
PB改性料厂家怎么选
PB加工常见问题及解决
How much is PB per kilogram?
PB is not one material: oil-extended, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Imported PB
approx. CNY 15-22/kg. tires; rubber products.
approx. CNY 18-25/kg. rubber products; special applications.
approx. CNY 20-28/kg. premium applications.
Domestic PB
approx. CNY 10-16/kg. tires; rubber products.
approx. CNY 12-19/kg. rubber products; special applications.
oil-extended, approx. CNY 11-18/kg. tires; rubber products; special applications.
2. Why prices differ so much
Four factors drive the price gap: composition or performance level, grade tier, application and brand/origin. Premium performance, special applications and imported brands all cost more; imports trade a premium for batch stability, while domestic grades offer better value.
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 PB, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PB solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PB 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; PB 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.
