很多人以为再生ABS就是废塑料打碎了再用——垃圾堆里捡回来，搅碎了，重新注塑，完事。
真相是，这行比你想的讲究多了。它有国标管着（GB/T 40006.5-2021，2022年就实施了），有PIR和PCR两套来路，有分选、清洗、造粒一整套工序，连碳足迹都拿清华的LCA算过账。
你手上那台路由器的外壳，可能几年前还是别人家的电视机壳；中间隔了几百公里的分拣线、几十道工序、几轮检测，才变成你买的那个壳。
这篇就把废电视机壳怎么变成新路由器外壳这事，一步一步拆给你看。
先搞懂ABS本身。它是三元共聚的：丙烯腈负责刚性和耐化学，丁二烯负责韧性和抗冲，苯乙烯负责光泽和加工流动性。三个单体凑一起，才是那个硬而韧、能镀能喷、尺寸稳的外壳料。少了丁二烯，它脆；少了丙烯腈，它软；少了苯乙烯，它不光亮——这就是为什么再生后丁二烯一老化，整料子的脾气就变。
再生ABS，就是把已经做成制品的ABS——家电壳、汽车内饰、电子电器外壳——再变回颗粒。它的价值不在变废为宝四个字，而在两件事：一是比原生料省一大截成本，二是比原生料少排一大截碳。
来源也广：家电拆解件、汽车拆解件、电子电器报废件、工厂水口料，都是它的来路。料源不同，品质天差地别，这就是为什么同一吨再生ABS，价格能差出一倍。
PIR和PCR，一个亲儿子一个领养的
再生ABS的料源，先分两路：PIR和PCR。
PIR是消费前回收，说白了就是工厂里的水口料、挤出边角料、检验不合格的次品——这玩意儿从生产线下来没多久，没经过用户使用，没沾过油污汗渍，杂质少、批次稳，品质上接近亲儿子。
PCR是消费后回收，就是家电拆解件、汽车拆解件、电子电器报废件——这些件在用户家服役过几年，沾过标签胶、汗渍、灰尘，还可能混了别的塑料和金属，品质波动大，像领养的孩子，得花大力气调教。
你品你细品：为什么同一吨再生ABS，PIR价比PCR贵一大截？因为前者进厂就能造粒，后者得先洗先分选。买料的时候不问来路，就等于闭着眼开盲盒。
所以买再生ABS，头一句话别问多少钱一吨，先问这料是PIR还是PCR——来路对了，后面的账才好算。
回收不是打碎就完，分选比造粒还重要
很多人以为回收就是破碎了造粒，错——分选才是决定品质的那道关。
ABS的密度在1.03-1.06 g/cm³之间，PP和PE比它轻，浮在上层，密度分选一上来就把它们分开；接下来上静电分选、近红外分选，把PC、PA、PVC这些邻居塑料挑出去；最后色选机把发黄发黑的杂片剔掉。
一道分选下来，料的纯度能干到98%-99%。洗不干净、选不干净，后面造粒造得再漂亮，出来的颗粒还是混着杂质，一上机就黑点满天飞。
说白了，分选是良心活，造粒是技术活。前一步偷工，后一步全白搭——这也是为什么同样叫再生ABS，有的能上汽车内饰，有的只能做垃圾桶，差别全在分选那几道工序里。
每吨减排67%，这不是环保口号是账本
别拿环保当情怀，再生ABS的账，算的是钱。
清华大学环境学院做过LCA生命周期评估：用再生ABS替代原生ABS，温室气体减排约67%，化石能源消耗减少58%。换算成碳足迹，一吨原生ABS从石油到颗粒，碳足迹大概3.2吨CO₂e；走物理回收这条路，能压到0.7吨上下。
每回收一吨废旧ABS，少排约2.5吨碳。这个数字不是喊口号，是欧美客户下单时写进合同的——没有碳足迹报告，货都进不了他们的供应链。
余姚有家做电子电器外壳的厂，之前全用原生ABS，出口欧洲时客户一查碳足迹，直接要求降碳。后来切到改性再生ABS，碳足迹报告拉出来减排六成以上，订单保住了，吨料成本还省了两成。
这就是为什么再生ABS不是环保噱头，是出口厂的生存题。宁波市科隆新材料有限公司做再生ABS多年，东南亚多国直采，料源稳定，PIR水口料品质可控，碳足迹和批次都对得上号，类似的出口案子处理过不少。
再生ABS的原罪——丁二烯会老
再生ABS有个出厂自带的原罪：它会老。
ABS里扛冲击的是丁二烯橡胶相。回收过程要经历高温熔融，丁二烯里的双键容易热氧老化，橡胶相一裂，跟基体的界面就松了。量化一下，没改性的再生ABS，冲击强度比原生料掉8%-12%，长期高温高湿服役还会再往下掉。
这不是绝症。加点增韧组分、配上抗氧剂，冲击能拉回接近原生的水平；泛黄的问题，靠遮盖和抗黄变配方也能压住。
说白了，丁二烯老是再生ABS的天花板，但不是死胡同——懂改性的厂，能把天花板拆了。怕就怕你拿到料不做检测，等装车三个月裂了一批件，才想起当初没问改性方案。
怎么判断一批再生ABS老没老？上机先看熔指波动，再打个缺口冲击，跟原生料比一比。冲击掉得超过一成，就得加增韧；熔指飘得厉害，说明回收次数多，别拿来做外观件。
物理回收和化学回收，各走各路
再生ABS按回收路子，分两条：
物理回收：破碎、清洗、造粒，主流路子，成本低、减排狠，绝大多数家电壳、电子电器件走这条；
化学回收：把高分子解聚成单体，再重新聚合，料更纯、品质更接近原生，但成本高、产能少，目前只够高端件小批量用。
选哪条，看你的产品露不露脸、要不要进高端供应链。普通量产件，物理回收足够把账算平；非要追原生级的外观和性能，才去碰化学回收那点小批量产能。
写在最后：七句口诀，搞定再生ABS
1. 先问来路：PIR水口料品质稳，PCR消费后件得看分选功夫；
2. 看密度分选干不干净，PP/PE混进来就是黑点大户；
3. 碳足迹报告要随货，出口欧美这是门票；
4. 冲击别指望原生水平，改性配方得提前谈；
5. 批次检测每批要，别信这批跟上次一样；
6. 化学回收只留给高端件，普通件物理回收足够；
7. 丁二烯老化是常态，长期服役件要做耐候。
写在最后：再生ABS这事儿，说穿了就是把废电视机壳、废路由器壳，经过分选、清洗、造粒，再变回新颗粒——它不是简单的打碎了再用，是一门有国标、有工艺、有账本的正经生意。宁波市科隆新材料有限公司做再生ABS多年，东南亚多国直采、PIR水口料品质可控，料源和批次都稳得住。
Many people think recycled ABS is just scrap plastic smashed and reused—picked up from the trash, shredded, re-injected, and done.
The truth is, this industry is much more refined than you think. It has national standards (GB/T 40006.5-2021, implemented in 2022), has PIR and PCR origins, a complete process of sorting, cleaning, and pelletizing, and even its carbon footprint is calculated using Tsinghua's LCA.
The case of the router you have might have been someone else's TV case a few years ago; There are sorting lines, dozens of processes, and several rounds of inspection between them before it becomes the case you bought.
This article will break down how a used TV case can be turned into a new router casing, step by step.
First, understand ABS itself. It is a ternary copolymer: acrylonitrile for rigidity and chemical resistance, butadiene for toughness and impact resistance, styrene for gloss and processing fluidity. When these three monomers come together, you get the hard, tough, plating, spray-resistant, and dimensional stable shell material. Without butadiene, it's brittle; Without acrylonitrile, it's soft; Without styrene, it's not shiny—that's why, after regeneration, butadiene ages, and the whole material's temper changes.
Recycled ABS means turning the ABS already made into a finished product—home appliance housing, car interior, electronic appliance casing—back into pellets. Its value doesn't lie in turning waste into treasure, but in two things: first, it saves a significant amount of cost compared to virgin materials; second, it emits a significant amount less carbon than virgin materials.
has wide sources: home appliance dismantled parts, car dismantled parts, electronic appliance scrap, factory sprue materials—all of which come from it. Different sources lead to vastly different quality, which is why the price difference for the same ton of recycled ABS can be twice as high.
PIR and PCR, one son and one adopted ,
recycled ABS sources are first divided into two sources: PIR and PCR.
PIR is pre-consumer recycling, which basically means factory sprue material, squeezed scraps, and defective products that fail inspection—these have just left the production line, haven't been used by users, haven't been stained with oil or sweat, have few impurities, stable batches, and quality is close to their own.
PCR is post-consumer recycling, which means dismantled home appliances, car parts, and electronic scrap parts—these have served in users' homes for several years, picked up label glue, sweat, dust, and may even be mixed with other plastics and metals. Quality fluctuates greatly, like adopted children, requiring a lot of effort to adjust.
AnalyzeCarefully: Why is PIR much more expensive than PCR for the same ton of recycled ABS? Because the former can be pelletized upon entry, while the latter must be washed and sorted first. If you don't ask about the source when buying materials, it's like opening a blind box with your eyes closed.
So when buying recycled ABS, don't ask the first thing per ton—first ask whether the material is PIR or PCR—if the source is right, the rest of the accounts will be easier.
Recycling isn't just about crushing; sorting is even more important than pelletizing
Many people think recycling means crushing and pelletizing, but wrong—sorting is the key to quality.
ABS density is between 1.03-1.06 g/cm³; PP and PE are lighter and float on top, and once density sorting starts, they are separated; Next, electrostatic sorting and near-infrared sorting are used to remove neighboring plastics like PC, PA, and PVC; Finally, the color sorter removes the yellowish and blackened debris.
After one sorting process, the purity of the material can reach 98%-99%. If you can't clean or select properly, no matter how beautiful the pelletizing process is afterward, the pellets will still be mixed with impurities, and once on the machine, black spots will fly everywhere.
To put it bluntly, sorting is a conscientious job; granulation is a technical skill. One step was cut corners, the next step was all wasted—that's why even though it's called recycled ABS, some can be used in car interiors, some can only be made into trash bins. The difference lies in the sorting process.
67% reduction per ton is not an environmental slogan but an accounting record
Don't treat environmental protection as sentiment; recycled ABS accounts are all about money.
Tsinghua University's School of Environment conducted an LCA life cycle assessment: replacing virgin ABS with recycled ABS reduces greenhouse gas emissions by about 67% and fossil energy consumption by 58%. Converted to carbon footprint, one ton of virgin ABS from petroleum to pellets has a carbon footprint of about 3.2 tons of CO₂e; Using physical recycling can reduce emissions to around 0.7 tons.
For every ton of recycled ABS recycled, about 2.5 tons less carbon is emitted. This figure is not just a slogan; it is written into contracts by European and American customers—without carbon footprint reports, goods cannot enter their supply chains.
There is a factory in Yuyao that makes electronic and electrical housings. Previously, it used only virgin ABS, but when exporting to Europe, customers checked the carbon footprint and directly requested carbon reduction. Later, we switched to modified recycled ABS, and the carbon footprint report showed emissions reduction of over 60%, orders were preserved, and cost per ton was cut by 20%.
That's why recycled ABS isn't an environmental gimmick—it's a survival challenge for export factories. Ningbo Kelong New Materials Co., Ltd. has been making recycled ABS for years, sourcing directly from multiple Southeast Asian countries, stable sources, controllable PIR sprue quality, and matching carbon footprints and batches. We've handled many similar export cases.
The original sin of recycled ABS—butadiene ages
Recycled ABS has a factory-friendly sin: it ages. The biggest challenge in
ABS is the butadiene rubber phase. The recycling process requires high-temperature melting, and the double bonds in butadiene are prone to thermal oxidative aging. Once the rubber phase cracks, the interface with the matrix loosens. To quantify, unmodified recycled ABS loses impact strength by 8%-12% compared to virgin materials, and long-term high-temperature and high-humidity service will reduce it further.
This is not a terminal problem. Adding toughening components and adding antioxidants can bring impact back to nearly virgin levels; Yellowing can be managed by masking and anti-yellowing formulas.
To put it bluntly, butadiene is always the ceiling for recycled ABS, but it's not a dead end—a factory that understands modification can tear down the ceiling. The real worry is if you get the material but don't test it, and after three months of loading, you crack a batch of parts and then remember you didn't ask about modification plans in the first place.
How to tell if a batch of recycled ABS is old? First, check the fluctuation of the melting fingers during machine use, then create a notch impact and compare with the virgin material. If the impact drops by more than 10%, toughness must be increased; If the melting fingers float badly, it means there are many recycling cycles, so don't use them for exterior parts.
Physical recycling and chemical recycling each follow different paths
Recycled ABS is divided into two recycling routes:
Physical recovery: crushing, cleaning, pelletizing—mainstream route, low cost, strong emission reduction, mostly used for home appliance shells and electronic components;
Chemical Recycling: Depolymerizes polymers into monomers, then repolymerizes them, resulting in purer material and quality closer to virginity, but high cost and limited capacity, currently only suitable for small-batch high-end parts.
Choose which, depending on whether your product shows its face and whether it enters the high-end supply chain. For ordinary mass-produced parts, physical recycling is enough to break even; Only if you insist on pursuing native-level appearance and performance do you tackle the small batch capacity of chemical recycling.
Final note: Seven mnemonic phrases to get recycled ABS
1. First, ask about the source: PIR sprue material quality is stable, PCR post-consumer parts depend on sorting skills;
2. Check if density sorting is clean; if PP/PE mixes in, it's a major black spot;
3. Carbon footprint reports must be included with the goods; exporting to Europe and America is the ticket;
4. Don't expect raw quality for impact; modified formulas must be discussed in advance;
5. Batch testing is required for each batch; don't believe this batch is the same as last time;
6. Chemical recycling is reserved only for high-end parts; physical recycling of ordinary parts is sufficient;
7. Butadiene aging is normal; long-term service parts must be weather-resistant.
In Conclusion: Recycled ABS is, at its core, about sorting, cleaning, granulating, and turning waste TV and router shells into new granules—it's not just about crushing and reusing them; it's a legitimate business with national standards, craftsmanship, and ledgers. Ningbo Kelong New Materials Co., Ltd. has been producing recycled ABS for many years, sourcing directly from multiple Southeast Asian countries, with PIR sprue material quality control, and stable sources and batches
