PUR多少钱一公斤?行情走势,聚氨酯的价格跟着MDI走
PUR多少钱一公斤?
这个问题一搜,从十二块一公斤到九十四块一公斤,报价差得比硬度范围还多。有人说我买的十四块的万华MDI用得挺好,有人说我买的九十四块的科思创TPU才叫高性能。到底差在哪?
说实话,问PUR多少钱一公斤的人,大概率还没搞懂PUR这东西不是一个料——发泡料、弹性体、涂料、胶粘剂、TPU,每个分支价格都不一样。你拿发泡料的价和TPU比,那不叫比价,叫被忽悠。
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。
巴斯夫(BASF,德国)
Elastollan C85A55,TPU聚酯型耐高温,参考价约35-50元/公斤。汽车、电子应用。
Lupranate MDI系列,聚合MDI,参考价约14-20元/公斤。发泡料、保温材料。
注塑级PUR,参考价约12-19元/公斤。通用注塑、弹性体。
科思创(Covestro,原拜耳,德国)
Desmodur 44V20L,MDI黑料,参考价约21元/公斤。PU发泡料、固化剂。
TPU 530/3,溶剂型羟基聚酯型,参考价约94元/公斤。高端涂料、胶粘剂。
水性聚氨酯U56/U54,参考价约35-50元/公斤。水性涂料、皮革涂饰。
亨斯迈(Huntsman,美国)
聚合MDI,参考价约19-20元/公斤。上海产,发泡料、保温。
万华化学(中企大厂)
聚合MDI,参考价约14-18元/公斤。国产主力,性价比高,发泡料、保温、胶粘剂。
万华TPU通用级,参考价约20-35元/公斤。国产TPU主力,鞋材、管材、薄膜。
万华水性聚氨酯,参考价约25-40元/公斤。涂料、胶粘剂、皮革。
一句话总结:发泡料12-20块,弹性体20-35块,涂料/胶粘剂30-50块,高端TPU 50-95块。你要的是啥用途和硬度,决定了你该在哪一档选。
二、同是PUR,价差凭什么这么大
PUR的价格差,主要藏在四个地方。
第一,原料不同。MDI基便宜,TDI基适中,高端多元醇贵。原料成本占PUR价格的70%以上,MDI价格波动直接影响PUR价格。
第二,形态不同。发泡料最便宜,弹性体适中,涂料/胶粘剂贵,TPU最贵。形态决定了加工方式和价格。
第三,硬度不同。邵氏硬度越低(越软),需要的软段越多,价格通常越便宜;高硬度需要更多硬段,价格贵。
第四,品牌和产地。进口溢价高但批次稳定,国产性价比高但质量参差。同样是TPU,科思创比万华贵50-100%,贵的是品控和研发。
三、采购避坑:别让MDI含量骗了你
我见过太多采购,比价比到最后选了最便宜的十二块的,然后做出来的制品回弹不够、耐老化差、客户退货,一次损失够买半年的好料。
PUR采购这行,水比你想的深。三个坑必须绕开:
第一,看NCO含量和粘度不看牌号。同一个牌号不同批次性能可能波动,拿到料先测NCO和粘度,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。有些贸易商拿低档多元醇当高档卖,拿回收料当新料卖。要COA、要物性报告、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12块,做出来次品率5%;B料单价25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——比如要阻燃又要高回弹、要耐油又要耐老化、要低成本又要高性能——那不是PUR的问题,是你需要的不是标准PUR,是改性PUR。
这时候可以看看宁波科隆新材目前在做的高性能改性PUR方案,阻燃、耐油、耐老化、增强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PUR的报价参考,比自己买原料再调试配方,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,PUR行情一天一个样,MDI、TDI、多元醇、汇率都在动。
如果你需要巴斯夫、科思创、亨斯迈、万华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PUR这事儿,十二的和九十四的,差的不是八十二。
单价是门槛,选对原料和用途才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料,是一公斤能做出合格制品的方案。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PUR采购上踩过什么坑?是回弹不够还是耐老化差?评论区聊聊,点赞最高的三位,送一份PUR主流牌号选型对照表。
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How much is PUR per kilogram?
PUR is not one material: coatings, adhesives, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
BASF
Elastollan C85A55, approx. CNY 35-50/kg. automotive.
approx. CNY 14-20/kg.
approx. CNY 12-19/kg. general injection.
Covestro
Desmodur 44V20L, approx. CNY 21/kg.
TPU 530/3, approx. CNY 94/kg. adhesives.
approx. CNY 35-50/kg.
PUR
approx. CNY 19-20/kg. insulation.
Wanhua Chemical
approx. CNY 14-18/kg. insulation; adhesives.
approx. CNY 20-35/kg. pipe; film.
approx. CNY 25-40/kg. coatings; adhesives.
2. Why prices differ so much
Four factors: (1) composition — lower levels are cheaper; higher levels give better performance but cost more. (2) form — premium grades need special formulations and cost more. (3) hardness — 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 PUR, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PUR solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PUR 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; PUR 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.