PET/PBT多少钱一公斤？
这个问题一搜，从十五块一公斤到四十五块一公斤，报价差得比PET含量还多。有人说我买的十五的国产通用用得挺好，有人说我买的四十五的杜邦高端才叫高耐热。到底差在哪？
说实话，问PET/PBT多少钱一公斤的人，大概率还没搞懂PET/PBT这东西不是一个料——通用级、玻纤增强级、阻燃级、高耐热级、高流动级，每个分支价格都不一样。你拿通用级的价和玻纤增强比，那不叫比价，叫被忽悠。
PET/PBT就是聚对苯二甲酸乙二醇酯/聚对苯二甲酸丁二醇酯合金，结合了PET的耐热性和PBT的易加工，常用于电子电器、连接器、汽车配件、家电外壳。
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。
杜邦（DuPont，美国）
Crastin PET/PBT系列，通用级，参考价约25-45元/公斤。电子电器、连接器、汽车配件。
Crastin PET/PBT玻纤增强级，参考价约30-50元/公斤。结构件、汽车、连接器。
巴斯夫（BASF，德国）
Ultradur PET/PBT系列，通用级，参考价约22-40元/公斤。通用注塑、汽车、电子。
Ultradur PET/PBT玻纤增强级，参考价约28-48元/公斤。结构件、汽车、连接器。
长春集团（Chang Chun，中国台湾）
PET/PBT系列，通用级，参考价约18-35元/公斤。通用注塑、汽车、电子。
PET/PBT玻纤增强级，参考价约22-40元/公斤。结构件、汽车、连接器。
国产PET/PBT（中企大厂）
国产通用级，参考价约12-25元/公斤。性价比高，通用注塑、汽车、电子。
国产玻纤增强级，参考价约15-30元/公斤。结构件、汽车、连接器。
一句话总结：国产通用12-25块，国产玻纤增强15-30块，进口通用22-45块，进口玻纤增强28-50块。你要的是啥PET含量和性能，决定了你该在哪一档选。
二、同是PET/PBT，价差凭什么这么大
PET/PBT的价格差，主要藏在四个地方。
第一，PET含量不同。PET含量20%左右便宜，含量50%以上耐热好但贵。PET含量越高，耐热性越好，但加工越难。
第二，玻纤增强不同。无筋通用便宜，30%玻纤增强贵。玻纤增强比通用级贵20-30%。
第三，阻燃等级不同。通用级便宜，阻燃级贵。阻燃需要特殊配方，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。同样是通用级，杜邦比国产贵30-50%，贵的是品控和研发。
三、采购避坑：别让PET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的，然后做出来的制品耐热不够、变形、客户退货，一次损失够买半年的好料。
PET/PBT采购这行，水比你想的深。三个坑必须绕开：
第一，看热变形温度和熔指不看牌号。同一个牌号不同批次性能可能波动，拿到料先测热变形温度和熔指，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PBT当PET/PBT卖，拿低PET含量当高含量卖。要COA、要PET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12块，做出来制品次品率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——比如要阻燃又要高耐热、要增强又要高流动、要低成本又要食品级——那不是PET/PBT的问题，是你需要的不是标准PET/PBT，是改性PET/PBT。
这时候可以看看宁波科隆新材目前在做的高性能改性PET/PBT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PET/PBT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，PET/PBT行情一天一个样，对苯二甲酸、乙二醇、丁二醇、玻纤、汇率都在动。
如果你需要杜邦、巴斯夫、长春集团、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PET/PBT这事儿，十二的和四十五的，差的不是三十三。
单价是门槛，选对PET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，是一公斤能做出耐热连接器的方案。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PET/PBT采购上踩过什么坑？是耐热不够还是变形？评论区聊聊，点赞最高的三位，送一份PET/PBT主流牌号选型对照表。
PET/PBT和PBT有什么区别
PET/PBT PET含量怎么选
PET/PBT和PET有什么区别
PET/PBT改性料厂家怎么选
PET/PBT注塑常见问题及解决
How much is PET/PBT per kilogram?
PET/PBT is not one material: GF-reinforced, flame-retardant, high-heat, high-flow, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
DuPont
general-purpose, approx. CNY 25-45/kg. electronics; connectors; automotive parts.
approx. CNY 30-50/kg. structural parts; automotive; connectors.
BASF
general-purpose, approx. CNY 22-40/kg. general injection; automotive; electronics.
approx. CNY 28-48/kg. structural parts; automotive; connectors.
PET/PBT
general-purpose, approx. CNY 18-35/kg. general injection; automotive; electronics.
approx. CNY 22-40/kg. structural parts; automotive; connectors.
Domestic PET/PBT
Domestic general-purpose, approx. CNY 12-25/kg. general injection; automotive; electronics.
Domestic GF-reinforced, approx. CNY 15-30/kg. structural parts; automotive; connectors.
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) flame-retardant grade — 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 heat deflection temperature and melt flow index 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 PET/PBT, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PET/PBT solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PET/PBT 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; PET/PBT 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.
