缓冲块撞几次就发白开裂，缓冲回弹全没。缓冲块耐候没选对，撞一次就散架。
撞几次就发白开裂，回弹全没
缓冲块是“缓冲回弹的件”：回弹、耐候、耐压。材料要回弹好、耐候、耐压——结论先给：缓冲块用 SEBS 基 TPE 是主流；室外缓冲，TPV 优先。
缓冲块最大的坑：发白不用慌，先问存放条件。发白先问存放，别急着换料——存放条件，是发白的办案线索。
缓冲块是功能件：开裂、塌陷都是问题。材料选对，设备才稳——功能件，别省料钱。
缓冲块为什么用 TPE
缓冲块用 TPE 的理由：回弹可做、耐候可做、耐压可做、效率高——四条合起来，适合缓冲块。
回弹是核心：缓冲回弹。回弹测试写进验收——塌陷，就是问题。
耐候不能省：室外使用。耐候测试写进验收——开裂，就是问题。
缓冲回弹室外，三道关
缓冲工况：冲击缓冲。缓冲数据要验——震感，就是问题。
回弹工况：反复压缩。回弹数据要验——塌陷，就是问题。
室外工况：日晒雨淋。耐候数据要验——开裂，就是问题。
TPE 还是橡胶？缓冲块一表
| 维度 | TPE | 橡胶 |
|---|
| 回弹 | 可做 | 好 |
| 耐候 | 可做 | 好 |
| 耐压 | 可做 | 好 |
| 成本 | 中 | 中高 |
| 效率 | 注塑 | 硫化 |
| 回收 | 可回收 | 难 |
表格读法：橡胶回弹耐候好但贵；TPE 效率高、可回收——缓冲块，TPE 是主流。
按环境选：室外 TPV，室内 TPE。
缓冲块验收：发白先问存放
| 现象 | 原因 | 对策 |
|---|
| 存放发白 | 析出 | 换低析出料 |
| 日晒发白 | 老化 | 换耐候料 |
| 弯曲发白 | 应力发白 | 调配方 |
| 遇水发白 | 吸水 | 换耐水料 |
表格读法：发白先问存放条件，再按现象查——高温暴晒、密封袋闷放，油分析出就冒白霜。
存放条件，是发白的办案线索。
一发白就换料，三个坑
坑一：发白就换料。白霜十有八九是充油迁移，先别忙着换料——先问条件。
坑二：耐候漏测。开裂——耐候测试，必测。
坑三：回弹虚标。塌陷——回弹按实测验收。
选缓冲块料先查存放条件
三问：存放条件什么样、耐候按多少年、回弹按什么标准。一验：实际工况实测——三问一验，供应商底细清楚。
条件验证要先行：先把仓储温度、堆压、密封方式问一遍。先查条件，再谈价格——存放条件，是发白的办案线索。
留样要成习惯：每批留样，回弹耐候按批次复测。批次换料先对比再放量——批次稳，客诉少。
缓冲块：现象、原因、对策全在这
| 现象 | 原因 | 对策 |
|---|
| 塌陷 | 回弹不足 | 换高回弹料 |
| 开裂 | 耐候不足 | 换耐候料 |
| 发白 | 析出 | 换低析出料 |
| 震感 | 缓冲不足 | 加缓冲层 |
| 批次漂移 | 配方波动 | 锁窗口 |
缓冲块主流 SEBS基 TPE，Shore A 60-75，压缩量按间隙15%-25%定。 回弹靠交联不靠堆料，压变超30%的块，长期受压就塌。
SEBS软糯室内用，TPV耐候像橡胶走室外。 户外日晒选TPV，室内缓冲选SEBS——按有没有紫外线选体系。
缓冲块表面发白别急着换料，先问存放温度和充油量。 析出发白是充油往表面跑，先查充油量再查相容剂——白霜是油不是脏。
缓冲块验收：低温弯折、回弹率、耐候老化三关。 压缩量按实际间隙设计，低温发脆数据单独测——一项不过不放行。
按工况定制耐磨牌号、返工率降一半，缓冲块表面不再磨花。 每批留样测回弹加耐候，换牌号先小批试产再放量。
缓冲块表面发白是充油往表面跑，先查充油量再查相容剂。 SEBS 软糯室内用，TPV 耐候像橡胶走室外，白霜是油不是脏，存放温度单独问。
压缩量按实际间隙设计，低温发脆单独测。 回弹率和耐候老化三关一起过，按工况定耐磨牌号，每批留样测回弹加耐候。
存放温度单独问，白霜是油不是脏。 每批留样测回弹加耐候，压缩量按实际间隙设计，低温发脆按场地最低温核。
析出发白先查充油量，白霜是油不是脏。 室内SEBS室外TPV按紫外选，存放温度单独问，压缩量按实际间隙，低温发脆单独测，每批留样回弹加耐候。
科隆客户案例：耐磨不合格磨花快，定制牌号返工减半
武汉一家工业设备厂，缓冲块耐磨不合格，表面磨花快。科隆配合定制耐油/耐温专用牌号，耐磨提升，返工率降了一半。按工况定制，耐磨从配方提——耐磨问题，先看配方体系。
小结
缓冲块的选型，条件先查，回弹再测，发白不用慌先问存放条件，条件是线索。
样品寄出去之后，我们一般还会多问一句：“打算怎么试？”
因为试法不对，好料也能试出坏结果。薄壁件的干燥、精密件的调湿、阻燃料的模温——任何一项没到位，结论都会跑偏。
宁波市科隆新材料有限公司，做改性热塑性弹性体、改性尼龙（PA6 / PA66 / PA46 / PA11 / PA12 / PA6T / PA9T 及尼龙合金）、改性 PPO / PPS，以及各大化工巨头尼龙树脂、副牌料、大包料现货。
- 批次：第 13 批｜TI7
- 主关键词：缓冲块；次关键词：缓冲块TPE、缓冲块回弹、缓冲块耐候、缓冲块发白
- 摘要：缓冲块用什么TPE？发白不用慌，先问存放条件。回弹、耐候、发白三张表一次讲清。
- 更新时间：待定
The buffer block turns white and cracks after a few hits, and the buffer rebound is completely gone. The buffer block's weather resistance was not chosen correctly, it falls apart after just one hit.
After a few hits, it turns white and cracks, with no rebound at all
A buffer block is a 'component that buffers and rebounds': it rebounds, is weather-resistant, and pressure-resistant. The material should rebound well, be weather-resistant, and pressure-resistant — conclusion first: SEBS-based TPE is mainstream for buffer blocks; for outdoor buffering, TPV is preferred.
The biggest pitfall with buffer blocks: don’t panic if they turn white; first, ask about the storage conditions. If they turn white, first ask about the storage, don’t rush to change the material — the storage conditions are the clue to the whitening issue.
The buffer block is a functional component: cracking and collapse are both problems. Only with the right material will the equipment be stable—functional components are not the place to save on material costs.
Why use TPE for the buffer block
Reasons for using TPE for buffer blocks: can provide rebound, can withstand weathering, can resist pressure, high efficiency — all four together make it suitable for buffer blocks.
Rebound is key: cushioning rebound. Rebound testing is written into acceptance — collapse is a problem.
Weather resistance cannot be compromised: for outdoor use. Weather resistance testing should be included in the acceptance—if it cracks, it’s a problem.
Outside the buffer rebound chamber, three checkpoints
Buffer condition: impact buffering. Buffering data needs to be verified—if there is a sense of vibration, it is a problem.
Rebound condition: repeated compression. Rebound data must be verified—collapse indicates a problem.
Outdoor conditions: exposure to sun and rain. Weather resistance data must be tested—cracking is a problem.
TPE or rubber? A chart of buffer blocks
| Dimension | TPE | Rubber |
|---|
| rebound | Can be done | Good |
| weather-resistant | Can do | Good |
| Pressure-resistant | Can do | Good |
| Cost | middle | Medium-high |
| Efficiency | Injection molding | Vulcanization |
| Recycle | Recyclable | difficult |
Table interpretation: Rubber has good rebound and weather resistance but is expensive; TPE is efficient and recyclable — for buffer blocks, TPE is mainstream.
Choose according to the environment: TPV for outdoor, TPE for indoor.
Buffer block acceptance: if it turns white, first check the storage
| Phenomenon | Reason | Countermeasure |
|---|
| Stored and discolored | Precipitate | Change to low precipitation material |
| Faded by the sun | Aging | Replace with weather-resistant material |
| Curved and pale | Stress whitening | Formulate a prescription |
| Turns white when wet | Absorb water | Change to waterproof material |
How to read the table: If it appears whitish, first ask about the storage conditions, then check according to the phenomenon — high temperature and exposure to sunlight, or sealed bags left in a stuffy place, the oil analysis will show a white frost if so.
Storage conditions are clues to cases that have turned pale.
Change the material as soon as it turns white, three pits
Pitfall 1: Change the material as soon as it turns white. White frost is most likely oil migration, so don't rush to change the material—check the conditions first.
Pitfall 2: Missed weather resistance testing. Cracking — weather resistance testing is a must.
Pitfall 3: Rebound overstatement. Settlement — Rebound is accepted based on actual measurement.
When selecting buffer block material, first check the storage conditions
Three questions: What are the storage conditions, how many years is it weather-resistant, and what standard is the rebound according to? One verification: Actual working conditions measured — three questions and one verification, the supplier's details are clear.
Condition verification must come first: first ask about the storage temperature, stacking pressure, and sealing method. Check the conditions first, then talk about the price—storage conditions are the pale clues in a case.
Making sample retention a habit: retain samples for each batch, and retest rebound and weather resistance by batch. When changing materials for a batch, compare first before scaling up—the more stable the batch, the fewer the customer complaints.
Buffer Blocks: Phenomena, Causes, and Countermeasures All Here
| Phenomenon | Reason | Countermeasure |
|---|
| collapse | Insufficient rebound | Replace with high-resilience material |
| Cracking | Insufficient weather resistance | Replace with weather-resistant material |
| pale | Precipitate | Change to low precipitation material |
| Vibration sense | Insufficient buffer | Add a buffer layer |
| Batch Drift | Formula fluctuation | Lock window |
Mainstream buffer block SEBS-based TPE, Shore A 60-75, compression amount determined by a gap of 15%-25%. Rebound relies on crosslinking rather than stacking; blocks with a compression deformation over 30% will collapse under long-term pressure.
SEBS soft and glutinous indoor use, TPV weather resistance is like rubber outdoors. For outdoor sunlight, choose TPV; for indoor buffers, choose SEBS—choose the system based on UV exposure.
Buffer block surface whitening Don't rush to change material; first ask about storage temperature and oil content. Whitening from sediment means oil flows to the surface; first check oil filling and then the compatibilizer—white frost is oil, not dirt.
Buffer block acceptance: low-temperature bending, rebound rate, and weather aging resistance. Compression is designed according to actual gap; low-temperature brittleness data is tested separately—no one is allowed.
Customize wear resistance grades according to working conditions, reduce rework rate by half, buffer block surfaces no longer wear or scratch. Retain samples for rebound and weather resistance for each batch; change grades first for small batch trial production before ramping up.
Buffer block surface whitening means oil is running to the surface; first check the oil filling and then the compatibilizer. SEBS soft glutinous indoor use, TPV weather resistance like rubber outdoors, white frost is oil, not dirty, storage temperature asked separately.
Compression amount is designed according to actual gap, low-temperature brittleness tested separately. Rebound rate and weather aging pass together, wear grade determined by working conditions, rebound and weather resistance tested for each batch.
Storage temperature asked separately, white frost is oil, not dirty. Each batch retained sample tests rebound and weathering, compression volume is designed according to actual gap, low-temperature brittleness is based on the lowest temperature on site.
Precipitation whitening first checks oil filling; white frost is oil, not dirty. Indoor SEBS outdoor TPV selected by ultraviolet light, storage temperature asked separately, compression amount based on actual gap, low-temperature brittleness tested separately, retained samples for rebound and weather resistance per batch.
Colum customer case: wear resistance fails and wears out quickly, custom grade rework halves
Wuhan industrial equipment factory, buffer block wear resistance fails, surface wear-down is fast. Cologne cooperates with custom oil/temperature resistant special grades, improving wear resistance and reducing rework rate by half. Customized according to working conditions, wear resistance is evaluated from the formula — first look at the formulation system.
Summary
Selection of buffer blocks, check conditions first, rebound before testing, no worries about whitening first ask storage conditions; conditions are clues.
After sending out samples, we usually ask: "How do you plan to test this?" "
Because the testing method is incorrect, even good materials can yield bad results. If any of these are not properly addressed, such as drying thin-walled parts, humidity regulation of precision parts, or mold temperature blocking fuels, the conclusion will go off track.
Ningbo Kelong New Materials Co., Ltd. produces modified thermoplastic elastomers, modified nylon (PA6 / PA66 / PA46 / PA11 / PA12 / PA6T / PA9T and nylon alloys), modified PPO / PPS, as well as nylon resins, sub-brand materials, and bulk materials from major chemical giants in stock.
- Batch: Batch 13 | TI7
- Main keywords: buffer block; Subkeywords: buffer block TPE, buffer block rebound, buffer block weathering, buffer block whitening
- Summary: What TPE is used for buffer blocks? Don't panic if it turns white, first check the storage conditions. Rebound, weather resistance, and whitening—explained in three tables at once.
- Update time: To be determined
