性狀：
細(xì)孔硅膠又稱A型硅膠，包括細(xì)孔球形硅膠和細(xì)孔塊狀硅膠,外觀為無色或微黃色透明或半透明玻璃狀。平均孔徑 2.0-3.0nm , 比表面650-800m2/g , 孔容0.35-0.45ml/g , 比熱0.92KJ/kg.℃,導(dǎo)熱系數(shù)0.63KJ/m.Hr.℃。
用途：
主要用做干燥劑、防潮劑，也可用作催化劑載體、吸附劑、分離劑、以及變壓吸附等。
技術(shù)指標(biāo)：
|
項(xiàng) 目 |
指 標(biāo) |
典型數(shù)值 |
|
優(yōu)等品 |
一等品 |
合格品 |
|
吸附量 |
RH=20%，% ≥ |
10.5 |
10 |
8 |
11.2 |
|
RH=50%，% ≥ |
23 |
22 |
20 |
29.2 |
|
RH=90%，% ≥ |
34 |
32 |
30 |
37.6 |
|
加熱減量，% ≤ |
2.0 |
2.0 |
4.0 |
6.0 |
|
pH值 |
4-8 |
4-8 |
-- |
-- |
|
比電阻，Ω. cm ≥ |
3000 |
-- |
-- |
5630 |
|
二氧化硅含量,% ≥ |
98 |
-- |
-- |
98.5 |
|
球形顆粒合格率,% ≥ |
82 |
-- |
-- |
90 |
|
粒度 |
協(xié)議 |
協(xié)議 |
協(xié)議 |
2-5mm |
|
堆積密度, g/L |
協(xié)議 |
協(xié)議 |
協(xié)議 |
784 |
|
注：球形顆粒合格率指標(biāo)僅適用于細(xì)孔球形合格率。 |
規(guī)格：0.5-1.5mm、0.5-1mm、2-4mm、2-5mm、4-8mm。
包裝：每袋凈重25kg或500kg集裝袋。
備注：水份、包裝和規(guī)格可根據(jù)用戶需求定制。
Fine-pored silica gel (Type A silica gel)
Characteristics
transparent or translucent, glass-like pellet or lump.
Average pore diameter: 2.0-3.0 nm. Specific surface area: 650-800m2/g
Pore volume:0.35-0.45 ml/g. specific heat:0.92KJ/kg.℃.
Thermal conductivity:0.63KJ/m.hr.℃.
Use
Mainly used for drying and moisture proof, may also be used as catalyst carriers, adsorbents, separators and variable-pressure adsorbents, etc.
Technical Data
|
ITEM |
Specifications |
Typical values |
|
Superior class |
First class |
Qualified class |
|
Adsorption capacity |
RH=20%,% ≥ |
10.5 |
10 |
8 |
11.2 |
|
RH=50%,% ≥ |
23 |
22 |
20 |
29.2 |
|
RH=90%,% ≥ |
34 |
32 |
30 |
37.6 |
|
Loss on heating，% |
2.0 |
4.0 |
6.0 |
1.0 |
|
PH value |
4-8 |
-- |
-- |
4 |
|
Specific resistance，Ω. cm |
3000 |
-- |
-- |
5630 |
|
Silica% |
98 |
-- |
-- |
98.5 |
|
Qualified ratio of spherical granules,% ≥ |
82 |
-- |
-- |
90 |
|
Size |
* |
* |
* |
2-5mm |
|
Bulk density, g/L |
* |
* |
* |
784 |
|
Negotiable |
|
Note: qualified ratio of spherical granules is only applicable to fine-pored silica gel |
Sizes: 0.5-1.5mm, 0.5-1mm,2-4mm, 2-5mm,4-8mm.
Packaging: 25kg per bag or 500kg per bag, net.
Note: The moisture content, packing and size may be customized per your specific requirements.
