同样叫再生PPO，黑色高温料一万五千五一吨，GFN2高科灰增强料两万块一吨，摆在料袋上都印着再生PPO四个字，买回去的东西完全不是一回事。
一吨差四千五。差在哪？等级。
做汽车BMS支架的、做光伏接线盒的、做射频连接器的，嘴上都说自己用的是再生PPO，有人拿GFN2灰增强顶新料打高压件，有人拿普通黑料压成看不见的非外观结构件。
更有意思的是，这行的国标刚出暗号。GB/T 40006.13-2025《塑料 再生塑料 第13部分：聚苯醚（PPE）材料》，2025年8月发布，2026年2月才正式实施，很多做料的、做注塑的，连这个册子号都没听过。
新国标刚落地，旧规矩还在跑。分不清等级就下单，跟闭着眼睛扫货没区别。这篇把再生PPO的分级江湖拆开揉碎，看完至少不会当韭菜。
先说清楚PPO是什么。聚苯醚，美国习惯叫PPO，日本和国标学术叫PPE，同一个东西两个名。纯PPO加工困难，市售九成五以上都是改性PPO，主力是PPO加HIPS的合金——也就是国标里说的PPE+PS-I。
它密度轻、刚性高、尺寸稳，天生是干耐高温、绝缘结构件的活。正因为定位偏工程级，再生料才显得金贵：原生PPO聚合链条长、能耗高，回收一吨比新做一吨省的不是一星半点。
这次新国标的适用范围也写得明白：以废弃PPE加HIPS合金为原料、机械回收制成的颗粒料，行业命名叫PPE(REC)。它专门划掉了医疗废物、农药包装这类危险料，也不用于食品接触——这条红线先记死。
那行业怎么分级？说白了就是四把尺子：国标MFR分组、灰分档次、改性方向、颜色。四把尺子量出来的等级，才是报价单上一万五和两万的差距来源。
国标暗号是MFR和灰分
国标把这把新尺子交到你手里，暗号就两组：MFR和灰分。
MFR的测试条件固定在280℃、5公斤砝码——注意这个温度，比一般通用料高一大截，因为PPO熔体本身就扛热。按MFR把料分成三组：01组≤10，02组10到20，03组20到40，单位克每十分钟。流动性越差数字越小，刚性件往高了选，薄壁充填往低粘度靠。
每组再按灰分分两档：负01档灰分≤1%，负02档灰分≤5%。灰分是烧完剩下的无机残渣，填料、泥沙、异种塑料全在里头。所以一个完整牌号长这样：PPE+HIPS(REC)-B1-C-1,,M,01-01——末尾01-01，就是"低流动组加低灰分档"的暗号。
国标底线也给了：负01档拉伸强度≥35兆帕、弯曲≥60兆帕；负02档拉伸≥30、弯曲≥50。达不到这个数，连再生料的门槛都没迈进去。
你品你细品：以后报价单上光写"再生PPO"四个字的，你就让他报牌号暗号。报不出来MFR组和灰分档的，货大概率是凑出来的。
品级是进门头一道筛子
国标给了MFR和灰分的硬尺子，行业还有一把软尺子，叫品级。
一级、特级，跟二级杂料，是再生塑料通行的纯度分级。一级特级来自工业水口料、汽车电子厂的干净边角，成分单一；二级杂料混了各种回收壳子，灰分高、料次多。
报价单上这串你得看懂：有一条"一级增强10%"报一万五，但备注写着二级——听着矛盾，实际是说这批货掺了杂料、品级掉到二级，价格才压到一万五。行业通用惯例，一级料灰分压在1%以内，跟国标负01档基本对得上。
为什么品级这么值钱？因为PPO加PS合金跟HIPS、ABS外观密度都差不多，回收的时候极容易串料。分选不干净，灰分就上去了，力学性能跟着飘。
你拿二级杂料去打要求批批一致的件，今天强度够、明天强度不够，客户退货退到你怀疑人生。所以下单先问品级：一级还是二级，敢不敢附灰分检测。问清楚这一句，比砍价五百块管用得多。
改性方向决定身价
品级定了干不干净，真正把一吨料价格拉开的，是改性方向。
纯PPO加PS合金是通用底子，做一般结构件；往耐油耐化学走，是PPO加PA合金路子；往刚性走，就上玻纤——10%、15%、20%、30%，行业暗号叫GFN，GFN2就是加20%玻纤，GFN3就是加30%玻纤。还有导电抗静电级、矿物低翘曲级，各干各的活。
报价单上这一串差价很说明问题：GFN2高科灰高温增强报一万八，GFN2-801式高科卖到两万，一吨差两千。差在哪？差在玻纤含量准不准、料源稳不稳。
这里有个容易被忽略的点：玻纤增强料回收后，破碎和多次挤出造粒过程中纤维受剪切会变短、长径比下降，增强效果逐次打折。要把刚性拉回目标区，得补纤——重新补入短玻纤，把纤维长度分布补回来。补多少、补得准不准，全看供应商对料源的控制力。
佛山有家做充电桩高压连接器壳体的客户，之前从国内小作坊拼所谓GFN2，号称都是20%玻纤，结果每车料玻纤含量从14%飘到25%，注塑出来的壳体和端子配合间隙批间差拉到11%，客户验厂直接亮红灯，良率掉到七成出头。后来走的是东南亚多国直采的固定料源——越南、泰国、马来几个厂的GFN2水口料定点收，每车报灰分和玻纤含量，批次之间GF值波动压在两个百分点以内，补纤按实测值精准补，良率重新拉到96%以上，连接器过厂内老化试验没再翻过车。
说白了，多国直采不是个营销词——料源固定了，每车料的玻纤含量才不会像开盲盒。批次可控、品级稳定、GF含量精准，这三个词落到量产线上，就是高压壳体不用反复调机、不用停线等料。
GFN2和Noryl，牌号里藏着对标密码
报价单上除了品级和改性方向，还有一串代号你得看懂：GFN2-780、GFN2-801式、高科。
这些"式"字开头的，说白了就是对标SABIC Noryl GFN2系列的国产仿牌号颗粒——20%玻纤增强高温款。一个"式"字，点破了它的出身：仿原厂配方，但不是原厂料。行业里这么叫，是方便工程师快速对标准件，不用翻整本TDS。
那原生料的标杆怎么参照？SABIC的Noryl家族：GFN2是20%玻纤、GFN3是30%玻纤，SE1是阻燃款，GTX是PPE加PA的耐油合金；三菱工程的Iupiace 100Z是标准阻燃注塑级，1950J是高流动V-0；旭化成的Xyron按V/Z/H/W分系列——通用阻燃V、高抗冲Z、高耐热H、耐热水W。想做中高端件，就往这几个原生牌号的参数上靠。
还有个细节值得知道：SABIC自己都在往再生方向走，Noryl NH5120RC3这款就含30%消费后再生料。大厂都在用再生料对标原生牌号做闭环，你还在拿"是不是原厂"当主要标准，思路就慢了一拍。
真正要盯的，是你手里的再生颗粒能不能把GFN2该有的刚性和尺寸稳定性打出来，而不是袋子上印的是谁的名字。
四个颜色方向，一句话讲清
黑色级：来源广、价格跨度大，黑色盖住杂质，做对外观无要求的内部结构件、底座。
灰色增强级：多对标GFN2，玻纤含量足、刚性高，做高压连接器骨架、充电枪壳体这类要尺寸的件。
米黄本色级：成分相对单一、偏本色，能做中高端配色，价格居中。
导电抗静电级：加碳纤或导电碳黑降表面电阻，做电子电器需要防静电的结构件。
写在最后：七条选料口诀
1. 问国标暗号：MFR组（01/02/03）和灰分档（01/02），报不出来的小心；
2. 问品级：一级灰分约1%以内，二级杂料灰分高，别拿二级钱差买一级活；
3. 问改性：纯合金、玻纤GFN2/GFN3、PPO加PA耐油、导电抗静电，方向定身价；
4. 问GF含量：回收后纤维变短，问清楚补纤量和实测玻纤百分比；
5. 问牌号：GFN2式、801式是对标Noryl的仿牌号，"式"字代表非原厂；
6. 问颜色：黑色便宜灰色贵、米黄本色成分单一，按外观要求选；
7. 问批次：敢不敢附每车灰分和GF检测，不敢给的就绕着走。
写在最后：再生PPO的等级，本质是国标MFR分组、灰分、改性方向和颜色四把尺子量出来的标价。新国标刚落地，很多规矩还在新旧交替，你不学会这套暗号，就只能替别人的学费买单。宁波市科隆新材料有限公司做改性PPO和再生料选型多年，料源走东南亚多国直采，批次可控、品级稳定、GF含量精准，类似充电桩、连接器这类要批批一致的案子每年处理几十起，说白了就是帮你把等级和玻纤含量在量产之前钉死。
Also called recycled PPO, black high-temperature material costs 15,500 yuan per ton, GFN2 gray reinforcement material costs 20,000 yuan per ton, and the bags are printed with the four words 'recycled PPO'. The things you buy are completely different.
A difference of 4,500 per ton. What's the difference? Grade.
Those who make automotive BMS brackets, photovoltaic junction boxes, or RF connectors all claim to use recycled PPO. Some use GFN2 gray reinforced top-new material for high-voltage parts, others use ordinary black material to make invisible non-exterior structural parts.
What's even more interesting is that the national standard in this industry just released its secret code. GB/T 40006.13-2025 "Plastics—Recycled Plastics Part 13: Polyphenylene Ether (PPE) Materials", released in August 2025, officially implemented in February 2026. Many material and injection molding companies have never even heard of this booklet.
The new national standard just came into effect, and the old rules are still running. Ordering without knowing the grades is no different from blindly buying goods. This article breaks down the grading world of recycled PPO, so at least after reading it, you won't be a scammer.
First, clarify what PPO is. Polyphenylene ether is commonly called PPO in the US, and in Japan and the national standard academic term PPE; the same thing has two names. Pure PPO is difficult to process; over 95% of products on the market are modified PPO, mainly an alloy of PPO plus HIPS—what the national standard calls PPE + PS-I.
It is lightweight, highly rigid, and has stable dimensions, naturally working for high-temperature resistance and insulating structural parts. Because it is positioned as engineering-grade, recycled materials are so precious: virgin PPO polymerization chains have long chains and high energy consumption, so recycling one ton saves a lot of money than making one ton of new ones.
The scope of application for the new national standard is also clearly stated: granular materials made from waste PPE plus HIPS alloy and mechanically recycled are called PPE (REC). It specifically removes hazardous materials like medical waste and pesticide packaging, and is not used for food contact—this red line should be remembered first.
So how is the industry classified? Simply put, it's four rulers: national standard MFR grouping, ash grade, modification direction, and color. The grades measured by these four rulers are the source of the difference between 15,000 and 20,000 on the quote.
National Standard Code is MFR and Ash Content
National Standard gives you this new ruler, with two codes: MFR and Ash.
MFR test conditions are fixed at 280°C and 5 kg weight—note this temperature, which is much higher than general materials, because PPO melt itself absorbs heat. According to MFR, materials are divided into three groups: Group 01 ≤ 10, Group 02 10 to 20, Group 03 20 to 40, per gram every ten minutes. The worse the flowability, the smaller the number; for rigid parts, choose higher ones; for thin-wall filling, lean toward low viscosity.
Each group is further divided into two levels based on ash: -01 grade ash ≤1%, -02 grade ≤5%. Ash is the inorganic residue left after burning, containing filler, silt, and discellant plastics. So a complete grade looks like this: PPE+HIPS(REC)-B1-C-1,M,01-01—ending 01-01 is the code for "low-flow group plus low-ash grade."
The national standard baseline also says: -01 tensile strength ≥ 35 MPa, flexural ≥ 60 MPa; -02 level tensile strength ≥ 30, bending ≥ 50. If you don't reach this number, you haven't even crossed the threshold for recycled materials.
Carefully Consider: From now on, if the quotation sheet only says "recycled PPO," you can ask them to provide the grade code and password. If you can't report MFR group or ash grading, the goods are most likely scraped together.
Grade is a sieve at the entrance
National standards give hard rulers for MFR and ash content, and the industry has a soft scale called grade.
Grade 1, Grade 1, and Grade 2 are the standard purity grading for recycled plastics. Grade 1 premium comes from industrial sprue material and clean edges from automotive electronics factories, with a single composition; Grade 2 off-grade is mixed with various recycled shells, with high ash content and many grades.
You need to understand this string on the quotation: there's a clause saying "Level 1 enhanced by 10%" quoting 15,000 yuan, but the note says "Level 2"—sounds contradictory, but in reality, this batch contains mixed materials and the grade drops to grade 2, so the price is pushed down to 15,000. Industry convention is that grade 1 ash content is kept below 1%, basically matching the national standard level minus 01.
Why is grade so valuable? Because PPO plus PS alloy has similar surface density to HIPS and ABS, so recycling easily causes material transfer. If sorting isn't clean, the ash content rises, and mechanical properties drift along with it.
You use grade 2 mixed materials to produce parts that require consistent batches; today's strength is strong but tomorrow's is not, and the customer returns the product so much you doubt your life. So when ordering, first ask about the grade: grade 1 or grade 2, and whether you dare to include ash content testing. Clarifying this is much more effective than bargaining for 500 yuan.
Modification direction determines your value
Once the grade is set, whether you can clean it is really the modification direction.
Pure PPO plus PS alloy is a general base for general structural parts; Towards oil and chemical resistance, it's PPO plus PA alloy approach; For rigidity, go for glass fiber—10%, 15%, 20%, 30%. The industry code is GFN, GFN2 is 20% glass fiber, GFN3 is 30% glass fiber. There are also conductive and anti-static grades, low mineral warp grades, each doing their own job.
The price difference on the quotation sheet is telling: GFN2 High-Tech Gray High-Temperature Reinforced is quoted at 18,000 yuan, GFN2-801 type High-Tech sells for 20,000 yuan, a difference of 2,000 per ton. Where is the difference? The difference lies in whether the glass fiber content is accurate and the material source is stable.
There's an easily overlooked point here: after recovering the glass fiber reinforcement, during crushing and multiple extrusion pelletizing, the fibers become shorter under shear and the length-to-diameter ratio decreases, reducing the reinforcement effect step by step. To pull rigidity back to the target zone, you need to supplement fiber—refill short glass fibers and restore the fiber length distribution. How much and how well to supplement depends entirely on the supplier's control over the material source.
Foshan has a client who makes high-voltage connector housings for charging piles. Previously, they bought so-called GFN2 from small domestic workshops, claiming to be 20% fiberglass, but the fiberglass content per batch floated from 14% to 25%. The injection-molded shells and terminals had gap gaps and batches to 11%, causing the customer to see red flags during factory inspection, with yield dropping to just over 70%. Later, they switched to fixed sources directly sourced from Southeast Asian countries—GFN2 sprue material from several factories in Vietnam, Thailand, and Malaysia. Each batch reported ash and fiberglass content, with GF values fluctuating within two percentage points between batches. Fiber replenishment was precisely based on actual measurements, raising yield back to over 96%. The connectors passed in-house aging tests without any failures.
To put it bluntly, multi-country direct sourcing isn't just a marketing phrase—if the source is fixed, the fiberglass content per batch won't feel like a blind box. Batch controllability, stable grade, and precise GF content—these three words on the mass production line mean that high-pressure housings don't have to be repeatedly adjusted or stop for material use.
GFN2 and Noryl, the benchmarking code is hidden in the grades
Besides grade and modification direction, there's another code you need to understand: GFN2-780, GFN2-801 type, Hi-Tech.
These starting with "style" basically mean they are targeting SABIC Noryl's GFN2 series domestic imitation grades—20% fiberglass reinforced high-temperature version. The word "style" reveals its origins: imitating the original formula, but not the original parts. In the industry, it's called so that engineers can quickly check standard parts without having to flip through the entire TDS manual.
So how do you benchmark virgin materials? SABIC's Noryl family: GFN2 is 20% glass fiber, GFN3 is 30% fiberglass, SE1 is flame-retardant, GTX is an oil-resistant alloy with PPE plus PA; Mitsubishi Engineering's Iupiace 100Z is the standard flame-retardant injection molding grade, 1950J is high flow V-0; Asahi Kasei's Xyron is divided into V/Z/H/W series—general flame-retardant V, high impact resistance Z, high heat resistance H, hot water resistant W. If you want to make mid-to-high-end parts, focus on the parameters of these native grades
Another detail worth knowing: SABIC itself is moving toward recycling, and Noryl NH5120RC3 contains 30% post-consumer recycled material. Big manufacturers are using recycled materials to benchmark the original grade in a closed loop, but if you still focus on "whether it's original" as the main standard, your thinking will slow down a bit.
What you really need to focus on is whether the recycled pellets in your hand can deliver the rigidity and dimensional stability that GFN2 should have, not whose name is printed on the bag.
Four color directions, explained in one sentence
Black grade: wide source, wide price range, black covers impurities, making internal structural parts and bases that don't require appearance.
Gray Enhanced Grade: Targets GFN2 with sufficient glass fiber content and high rigidity, suitable for high-voltage connector frames, charging gun housings, and other parts that require dimensions.
Beige Natural Grade: Relatively simple composition, leans toward natural color, suitable for mid-to-high-end color schemes, priced in the middle.
Conductive Anti-Static Grade: Adds carbon fiber or conductive carbon black to reduce surface resistance; electronic and electrical components need anti-static structural components.
Final Notes: Seven Material Selection Tips
1. National Standard Code: MFR group (01/02/03) and Ash separation (01/02); be cautious if you can't report it;
2. Ask about grade: Grade 1 ash content is about 1% or less, grade 2 mixed materials have high ash content, don't use the price difference from grade 2 to buy grade 1 work;
3. Ask about modification: pure alloy, glass fiber GFN2/GFN3, PPO plus PA for oil resistance, conductivity and static resistance, direction determines price;
4. Ask about GF content: After recycling, fibers become shorter; ask about fiber supplementation and actual measured glass fiber percentage;
5. Ask grade: GFN2 type and 801 type are imitations of Noryl; the character "shi" means not original;
6. Ask about color: Black is cheap and gray is expensive, beige natural color has a single composition; choose based on appearance requirements;
7. Ask about batches: Do you dare to include ash and GF tests for each truck? If you don't dare to provide it, just avoid it.
In conclusion: The grade of recycled PPO is essentially a price measured by four standards: national standard MFR grouping, ash content, modification direction, and color. The new national standard has just been implemented, and many rules are still transitioning between old and new. If you don't learn this code, you'll have to pay for others' tuition. Ningbo Kelong New Materials Co., Ltd. has been selecting modified PPO and recycled materials for many years, sourcing directly from multiple Southeast Asian countries. Batch control, stable grade, and precise GF content. Cases like charging stations and connectors that require consistent batches are handled dozens of cases every year. In short, they help you pin down the grade and fiberglass content before mass production
