Silicone Sponge Rubber Guide
silicone sponges have outstanding mechanical qualities and are regarded to have a full closed cell structure. Silicone sponge frequently provides greater water sealing in wash-down applications as opposed to silicone foam.
What is Silicone Sponge?
Silicone sponge is utilized by the food processing, medical and pharmaceutical sectors for sealing purposes. Blending the lightness of foam with heavier sponge rubber's increased sealing characteristics, silicone sponge is a very flexible material.
The silicone elastomer is expanded at the moment it is heat cured; the expansion process forms the closed cell sponge structure. The expanding process may be compared to adding yeast to bread to make it rise, generating compressible air pockets. Expanded closed cell silicone sponge materials offer many of the benefits of solid silicone in a softer and more responsive form.
Properties of Silicone Sponge
Silicone itself is exceptionally temperature resistant, being able to endure both high temperatures and those that are considerably below freezing. Silicone sponge has a dense cell structure which provides significant protection against water and particles.
加えて, the silicone sponge offers exceptional vibration isolation properties as well as being able to decrease the impacts of shocks to the item it is protecting.
On the negative side, Silicone has a low tear factor, which implies that it can rip quickly. This renders it unsuitable for dynamic applications. Silicone sponge is also very inert and should not be used with chemicals, notably oil.
Uses of Silicone Sponge
Silicon sponge is widely used outside for sealing off and shielding lighting, communications and electronics equipment from the outside environment. This is owing to its capacity to inhibit wind-driven rain and tiny particles from getting through and harming the equipment.
Owing to the metal detecting silicone employed in its creation, silicone sponges are widely utilized as seals on the production line where contamination must be prevented. This is because a small quantity of particles from degraded silicone seals that enter the production process can contaminate the items being created on the production line. This might result in thousands of pounds being wasted owing to interrupting production and tainted items being returned.
Particles from the silicone sponge may be detected by sensors on the manufacturing line, enabling for a prompt stoppage and repairs to be done in a short amount of time. This immediately reduces down the amount of time and money lost while the machinery is out of work.
Open-cell Vs Closed-cell Sponge Silicone Rubber
It is vital when selecting any sort of silicone sponge to appreciate the distinction between open and closed cells. Puzzling the two might create disappointment in a seal or gasket in the application.
Open Cell Sponge Silicone Rubber
Open cell basically suggests that every cell, or an air pocket, is extensively linked with the subsequent cell. These cells are not finished terminations, in this manner, 水, dampness, and residue might advance into the cell structure.
A certifiable instance of an open-cell sponge is the sort of sponge that is used to wash basic household objects. In the case that you place the wipe in a basin of water, you notice the wipe dousing up heaps of water which is subsequently squeezed out again onto the car. The water is permitted to travel through every cell and along these lines gets retained and kept inside the sponge.
Closed Cell Sponge Silicone Rubber
A closed cell sponge has a radically different cell structure than an open cell. In a closed-cell silicone sponge, each cell contains air in a completed and closed pocket. Water, 湿度, and other deposits cannot penetrate any of the cells. For any sort of sealing needs, closed cell sponge is exceptionally suitable for usage as it has extremely low water intake keeping the water or any other fluid/material entirely isolated.
The main distinction between an open cell and a closed cell sponge is the toughness and pressure rate. A closed cell sponge will be substantially stiffer. In an open-cell sponge, the air may escape away when pushed and the major defiance comes from the rubber itself.
Silicone Sponge Material Applications
- General Sealing in different Industries/Custom Gasket Applications
- Sound and Vibration Insulation
- Hot & Cold Thermal Insulation
- Cushioning
- Insulating/Lighting Fixture Gasket/Electrical Enclosure
- Flame Retardant Sponge
- Food Processing Machinery Seal/Pharmaceutical Equipment
Benefits of Closed Cell Silicone Sponge
- Wide working temperature — Silicone sponge has a temperature range of -100°F to 500°F (-73°C to 260°C).
- Weather sealing — the closed cell construction provides for effective weather sealing with comparatively modest compressive pressures. UL 50 and UL 50E ratings are available.
- Compression set resistance - Silicone has good compression set resistance (ability to rebound to original thickness), especially at higher temperatures, compared to most rubber materials. Low-compression set silicone sponges are available for even greater performance than general-purpose grades.
- UVおよびオゾン抵抗 - Silicone materials have exceptional UV and ozone resistance due in part to their inorganic backbone. これにより、長期にわたるパフォーマンスが得られます.
- 厳しい — When silicone is required, silicone sponge components provide superior robustness as opposed to silicone foam items.
- Outdoor gasket - Given all the above characteristics, a silicone sponge is a fantastic material option for outdoor conditions, from the Arctic to the desert.
Benefits of Closed Cell Silicone Sponge
シリコンフォームは、オープンセルとクローズセルフォーム構造の両方で利用できます
オープンセルフォーム構造 水の優れた吸収を可能にします, 水分, そしてほこり - 自動車の洗浄に使用される従来のスポンジでそれを完璧にする.
- 閉じた細胞フォーム構造 水の吸収に対応しません, 水分, またはほこり - 水とほこりを排除する必要がある密閉アプリケーションに優れています. この種は本質的に疎水性です (水を撃退します) (水を撃退します).
シリコンスポンジvs. シリコーンフォーム
シリコンスポンジとシリコンフォームの両方が、温度の上昇時に優れたシーリング品質を持っています, 材料には小さな分散があります. シリコンスポンジは複合され、2ロールミルで結合され、オーブンで硬化します. シリコンフォームは、液体シリコンから製造されています。. どちらも携帯電話です.
| 特性 | スポンジ | フォーム |
| 原材料 | ガムベースのシリコン, オーブンで混合され、硬化しました | 液体シリコンは押し出され、オーブンで硬化します |
| 最小マックスは温度を使用します | -73oc +260oc -100oF + 500oF | -51oc +200oc -67oF + 392oF |
| 可燃性 | UL 94 HBF (水平バーンフォーミュラはV22-300を利用できます) | UL 94 v-0 垂直火傷 - スポンジよりも優れた炎の評価 |
| 圧縮セット | 良い (より低い圧縮セット式が利用可能ですv22-210) | スポンジよりも優れた圧縮セット |
| 抗張力 | 高い引張強度; より高い材料重量 | スポンジよりも低い引張強度; より低い材料の重量. 手で引き裂くのは簡単です. |
| 密度 | ソフトシリコンスポンジ = 21-30 PCF (ポンド/立方フィート) 典型的な 中型シリコンスポンジ = 29-33 典型的なPCF しっかりとしたシリコンスポンジ = 40 典型的なPCF | ソフトシリコンフォーム = 12 典型的なPCF(ポンド/立方フィート) 中程度のシリコンフォーム = 22 典型的なPCF |
| 圧縮たわみ | ソフトシリコンスポンジ = 5-9 典型的なPSI 中型シリコンスポンジ = 6-14 典型的なPSI しっかりとしたシリコンスポンジ = 12-20 典型的なPSI | ソフトシリコンフォーム = 3 典型的なPSI 中程度のシリコンフォーム = 9 典型的なPSI |
| 注記: 提供される情報は参考用であり、特定の機能があるかどうかはユーザーが判断する必要があります。 | ||
シリコンスポンジは密度が高くなる傾向にあります, 引き裂き強度が強い, 使用温度が高くなります (シリコーンフォームの 392F と比較して最大 500F) (シリコーンフォームの場合は 392F と比較して、最大 500F) 基本的に、シリコーンスポンジはシリコーンフォームよりも優れた物理的および機械的品質を備えています。.
シリコーンフォームは柔らかい傾向があります, 密度が低い, 圧縮永久歪み特性が低い. 空気を多く含むので, 優れた断熱性を提供します. シリコンフォームはまた、航空アプリケーションで重要な難燃性品質を高めます. どちらの物質も多くの水を吸収しません, したがって、シリコン "スポンジ" 多くの場合、混乱した記述子です.