Excellent air tightness, excellent water tightness, excellent sealing
| Application | Car audio, Home audio, Subwoofer audio, Stage speakers, Wall speakers, Ceiling speakers, Outdoor speakers, Intelligent voice Bluetooth speakers, surround sound, artificial intelligence speakers, Self DIY audio design. |
| Material | IIR with another more than 10 types of additives to adjust the performance of the rubber |
| Hardness | 40~85° |
| Thickness | 0.10mm-15mm,accept customized |
| Surface treatment | Black light, Sanding, Biting lace, etc |
| Shape | Round, Oval, Rectangle,Accept foreign molds ,Support customize molds |
| Edge design | High pressure strip, Textured, Anti concave edge, Notching, Punching, etc |
| Color | As requested by clients |
| Feature | Anti-aging, Waterproof, Durable, Pliable |
| Certification | ISO9001,IATF16949,ISO14001 |
| Capacity | 60000pcs/month |
A surround’s quality has enormous impact on the frequency response of a loudspeaker. The shore hardness directly affects the frequency of the speaker. Rubber surrounds also endure a long lifetime, almost 20~30years. IIR rubber surround is ideal for car speaker and outdoor speaker as for its excellent seal property.
Some people say foam surrounds are ideal for sound quality and high excursion while rubber surrounds are slightly stiffer but they last longer. The cost difference between rubber and foam is pretty insignificant. There are so many other factors involved with choosing a speaker surround than just its surround type, for example magnet size and cone material, that the surround alone is not going to seal the deal. Both material types serve their purposes well, just take a listen to decide the ideal surround material.
Butyl, also known as Isobutylene-isoprene (IIR), is a synthetic rubber developed in the 1940’s. It has exceptionally low gas permeability making it ideal for inner tubes and high pressure/vacuum sealing applications. Its very low resilience makes it suitable for shock and vibration damping. IIR is a great option for shock absorption. It offers exceptionally low gas and moisture permeability and outstanding resistance to heat, ageing, weather, ozone, chemical attack, flexing, abrasion and tearing. Butyl is resistant to phosphate ester based hydraulic fluids and has excellent electrical insulation properties. It has a tendency to trap air, blister and creep during manufacture.
| Guangdong Nandi Yanlong Technology Co., Ltd. | |||||||||||||||||
| Low temperature tensile test of rubber materials IIR | |||||||||||||||||
| Lab Date： 2022.05.11-05.13 | Lab Model：ND158-399 | ||||||||||||||||
| No. | Model | Lab Conditions | Time | Lab Temp | Test result | Test Diff | |||||||||||
| 1 | IIR60 | 1 | Vulcanization conditions: | 12H | 23℃ | Peak value | Disp | Str | FO | Peak value | Disp | Str | FO | ||||
| Suface Temp | Mold Temp | Time | Pressure | Cap | 12H | -40℃ | 22.25 | 34.17 | 1.47 | 32 | -2.40 | -2.14 | -0.17 | +2 | |||
| 190/195℃ | 170/175℃ | 45S | 8kg/C㎡ | 65T | 24H | -40℃ | 27.67 | 41.72 | 1.84 | 32 | +5.42 | +7.55 | +0.37 | 0 | |||
| 2 | 100 ° 2-hour twice vulcanization. | 36H | -40℃ | 25.90 | 37.56 | 1.72 | 33 | -1.77 | -4.36 | -0.12 | +1 | ||||||
| 3 | Tension machine speed: A is 10 and B is 100 | 48H | -40℃ | 26.17 | 38.02 | 1.74 | 34 | +0.27 | +0.46 | +0.02 | +1 | ||||||
| 4 | Tension plate:45mm*10mm*0.5mm | 96H | -40℃ | 28.57 | 41.76 | 1.9 | 34 | +2.40 | +3.74 | +0.16 | 0 | ||||||
| 5 | Lab temp: 25℃±2℃, humidity 65%±30% | Avg | 26.165 | 38.646 | 1.9 | 33 | 0.19 | 0.08 | 0.03 | 0.4 | |||||||
| Tabulator：Liu Li | Auditor： Aken | Inspector：Vic Chiu | |||||||||||||||
| 一、Note： | |||||||||||||||||
| 1.peak value:the biggest tension. | |||||||||||||||||
| 2.Strength：In the tensile test, the maximum tensile stress of the specimen until it breaks. | |||||||||||||||||
| 3.Displacement：Travel distance from static movement to fracture. | |||||||||||||||||
Payment method: Pay 30% for deposit,70% before shippment.
Accept US dollars, RMB, if other currencies, please consult before paying.
Term:EXW/FOB/CIF/CFR/DDP
Port: Shen Zhen/Guang Zhou/Ning Bo/Shang Hai
Production Lead Time: 1-1k, 2 days；1k-10k, 7days；above 10k，negotiated.
Package:Export Standard Unified Carton Packaging.
Small quantity is usually shipped by courier.
Bulk quantity ship by air , by sea,by railway
Special service: help find low freight and freight counter-offer
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