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6028 甲基纤维素
MC

  常用粘度 4 万 CPs ,用于耐水腻子粉及干拌砂浆粉;保水性、速溶性好。室外用,防水性好,①快速形成高且稳定性佳的保水性;②精确的赋予体系流变性,从而控制其工作性能;③精确的粘度;④调整体系需水量,提高材料与基底的粘接力。增稠、保水、抗下垂、易批刮、易找平。
  粉刷石膏:以石膏基为主料的抹灰砂浆;
  石膏腻子:以找平和增加装饰效果的批刮材料;
  用于砌筑砂浆、自流平地面、粉刷石膏、瓷砖粘结剂、石膏腻子、保温体系。
   广泛用于建筑施工、建材、分散性涂料、壁纸糊料、聚合助剂,除漆剂等分别用作增稠剂、粘接剂、保水剂、成膜剂、赋形剂等。如在建材上用作粘合剂、增稠剂和保水剂,在涂料工业上用作成膜剂和增稠剂。



甲基纤维素( MC Methyl Cellulose

一、名称及结构 Designation and Molecular formula
甲基纤维素( MC ) Methyl Cellulose
结构式 Chemical structural formula

式中 n 为纤维素分子中葡萄糖单元个数

Where : n is number of glucose units in cellulose molecule.

二、技术指标 Product Specification

指标名称

Specification

工业级 HG-M

Industrial grade

医药级 HG-MP

Pharmaceutical grade

外观

Appearance

白色或类白色粉末

White or off-white powder

白色或类白色粉末

White or off-white powder

甲氧基含量

Methoxyl group

27.5-32.0%

27.0-32.0%

酸碱度

PH

4.0-8.0

4.0-8.0

粘度

Viscosity

5-100000mPa·s

0.005-0.100Pa·s

干燥失重

Weight loss on drying

≤ 5.0%

≤ 5.0%

炽灼残渣 ( 以硫酸盐计算 )

Residue on ignition (Calculated as sulphate)

≤ 3.0%

≤ 1.0%

重金属

Heavy metals

/

≤ 20ppm

砷盐

Arsenic

/

≤ 0.0002%

凝胶温度

Gel temperature

50 -55 ℃

/

细度

Finesses

80-100mesh

80-100mesh

卫生学检查

Hygienics examine

杂菌总数

Microbial quantity

/

≤ 1000 个 /g

酶菌总数

Mildew quantity

/

≤ 100 个 /g

大肠杆菌

Colibacillus

/

不得检出

Can not be inspected out

本指标医药食品级符合中国药典符合中国药典 2005 版、美国药典 USP27 版标准。
The pharmaceutical grade complies with USP27 and Chinese Pharmacopoeia 2005.

可根据客户要求提供各种粘度规格产品。
Various viscosity products are available according to customer ' s requirements.

三、理化性状
1 、外观:白色或类白色粉末或颗粒,无嗅无味,无毒,稍有吸温性;
2 、溶解性能:几乎不溶于乙醇、乙醚、氯仿。在水、冰醋酸或乙醇 - 氯仿( 1 : 1 )的混合液中能形成澄清或混悬的粘性溶液。在 80~ 90 ℃ 的热水中迅速溶胀,降温后迅速溶解 ,水溶液在常 温下相当稳定,高温凝胶经加热和冷却依次经历从凝胶至溶解的可逆转变。具有优良的润湿性、分散性、粘结性、增稠、乳化性、保水性和成膜性。所成膜具有优良的韧性、柔曲性和透明度,因属非离子型,可与其他的乳化剂配伍,但易盐析,溶液在 pH=2-12 范围内稳定;
3 、密度: 1.3g /cm 3 ;
4 、表观密度: 0.25 -0.7g /cm 3 ;
5 、变色温度: 190 -200 ℃
6 、炭化温度: 225 -230 ℃ ;
7 、表面张力: 25 ℃ 时 47-53dyn/cm

III 、 Physical and chemical properties
1 、 Appearance: white or off-white, odourless and tasteless powder, innoxious, light hydroscopicity.
2 、 Dissolubility: It almost does not dissolve in ethanol, ethyl ether, chloroform. It can form cleat and suspended viscous solution in the mixture of water and glacial acetic acetic acid or the mixture of ethanol and chloroform(1:1).It swells quickly in the hot water of 80 -90 ℃ and dissolves quickly when the temperature . MC gel formed by high temperature can display reversible change from gel to solution in turn by heating and cooling . It has good humectant and dispersing , binding ,thickening, emulsifying , water retention and film forming properties MC film has excellent toughness, flexibility and clearance .Because of its non-ionic it can be compatible with other emulsifiers but easy to salt out , and show stable in the range of PH2-12.
3 、 Density: 1.3g /cm 3 ;
4 、 Appearance:0.25 -0.7g /cm 3 ;
5 、 Temperature to change color:190 -200 ℃ ;
6 、 Carbonation temperature:225 -230 ℃
7 、 Surface tension:47-53dyn/cm at 25 ℃ ;

四、用途
本产品广泛用于建筑施工、建材、分散性涂料、壁纸糊料,聚合助剂,化妆品、药品、除漆剂、食品、皮革、油墨、造纸等分别用作增稠剂、粘结剂、保水剂、成膜剂、赋形剂、乳化剂等。如在建材上用作粘合剂、增稠剂和保水剂,在涂料工业上用作成膜剂 和增稠剂,别外在石油钻探和日用化工等领域应用较为广泛。

IV 、 Application
The product is widely used in building construction , building materials , dispersing coating, wall paper coating ,polymerization aids, cosmetics, pharmaceuticals, varnish remover, food , leather, food ,leather, printing ink paper and etc working as thickener, adhesive, moisture retentive agent, film former , excipient , emulsifier and so on . For example it is used as adhesive , thickener and moisture retentive agent in building material; film former and thickener in coating industry . Furthermore, it also has a wide use in oil drilling and daily chemical industry.

五、溶解方法
将所需水量加热 80 -90 ℃ ,在为断搅拌下慢慢加入 MC ,所形成的淤浆,经降温冷却后,得到均匀的水溶液,或加入需要量的 1/3-2/3 的热水,加热至 80 -90 ℃ 在不断搅拌下慢慢加入 MC 待溶胀好后,再加入剩余冰水(或冰块),经搅拌降温冷却而成。

V 、 Dissolution method
Heat the required amount of water to 80 -90 ℃ . Add MC gradually while continuous stirring . The formed slurry can change to uniform aqueous solution after cooling , Or, add 1/3-2/3of required hot water, then heat to 80 -90 ℃ ,Add MC gradually while continuous stirring . Add the remaining ice water or ice when MC swells . Stir and cool it to form uniform aqueous solution.

六、包装及贮运
包装:外用复合塑纸袋封装,内用聚氯乙烯塑料袋包装。
贮存:密封,严禁日晒雨淋、防潮、严禁与酸碱接触。
运输:按防潮普通化学品运输。

IV 、 Package, storage and transportation
Package: Plastics-paper bag outside, lined with PVC bag.
Storage :seal tightly. Exposing to the sun and rain is forbidden, to avoid absorption of moisture and contact with acid and alkali.
Transportation: As common moisture-proof chemicals.




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