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6030 羟乙基甲基纤维素( HENC

Hydroxyl Ethyl Methyl Cellulose

一、名称级结构 Designation and Molecular formula
羟乙基甲基纤维素( HEMC ) Hydroxyl Ethyl 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

项目名称

Items

技术指标

Specification

外观

Appearance

白色或类白色粉末

White or off-white powder

甲氧基含量

Methoxy group

24.5-28.0%

羟乙氧基含量

Oxyethyl group

1.5-9.5%

干燥失重

Weight loss on drying

≤ 5.0%

炽灼残渣(以硫酸盐计算)

Residue on ignition (Calculated as sulphate)

≤ 3.0%

酸碱度

PH

4.0-8.0

细度

Finesses

80-100mesh

粘度

Viscosity

5-100000mPa·s

三、理化性质
1 、本品为白色或类白色粉末,无嗅无味。
2 、可溶性:在热水,丙酮,乙醇,乙醚和甲苯中几乎不溶。溶于水及部分有机溶剂,如适当比例的乙醇 / 水、丙醇 / 水、二氯乙烷等。溶液具有表面活性,透明度高、性能稳定。不同规格的产品凝胶温度不同,这就是羟乙基甲基纤维素( HEMC )的热凝胶性质。溶解度随粘度而变化,粘度愈低,溶解度愈大,不同规格的羟乙基甲基纤维素( HEMC )其性能有一定差异,羟乙基甲基纤维素( HEMC )在水中的溶解不受 pH 值影响。羟乙基甲基纤维素( HEMC )能溶于冷水不能溶于热水,羟乙基甲基纤维素( HEMC )不溶于大部分有机溶剂。经表面处理的羟乙基甲基纤维素( HEMC )在冷水中分散不凝聚,溶解较慢,但将其 pH 值调制 8~10 可迅速溶解。
3 、 PH 稳定性: pH 值在 2~12 范围内粘度变化较小,超过此范围粘度降低。
4 、颗粒度: 80 目通过率≥ 99% , 60 目通过率 100%.
5 、视密度: 0.30~ 0.60g /cm 3 。
6 、羟乙基甲基纤维素( HEMC )具有增稠、悬浮、分散、粘合、乳化、成膜、保水等特性,其保水性较甲基纤维素( MC )强,粘度稳定性、抗霉性、分散性较羟乙基纤维素( HEC )强。

III 、 Physical and chemical properties
1 、 HEMC is white or off-white , odourless and tasteless powder .
2 、 Dissolubility: It almost does not dissolve in hot water, acetone, ethanol , ethyl ether, and toluene . It dissolves in water and some solvents , such as , the suitable proportion of ethanol/water , propanol /water. Its aqueous solution provides surface activity and high transparence and stable properties .Various producs have different gel temperatures, which is the thermal gel properties of HEMC. Solubility changes with viscosity . Lower the viscosity is , higher the solubility is . Different types of HEMC have different properties . Its dissolution is not subject to PH in water . HEMC can dissolve in cold water but not dissolve in hot water .It soes not Dissolve in most organic solvents . The surface treated HEMC disperses in cold water without agglomeration . Its dissolution speed is a little slow . But it can dissolve quickly when PH is adjusted to 8~10.
3 、 PH stabilization: Viscosity varies a little at the range of PH 2~12. Viscosity decreases when PH exceeds this range.
4 、 Particle size: ≥ 99% through 80mesh, 100%through 60 mesh
5 、 Apparent density :0.30~ 0.60g /cm 3
6 、 HEMC has the properties of thickening , suspending , dispersing, bonding , emulsifying ,film-forming , water retention . Its water retention ability is better than tat of MC, Its viscosity stability , antienzyme, dispersing abilities are better than those of HEC.

四、用途
羟乙基甲基纤维素( HEMC )广泛用于水性乳胶涂料、建筑施工和建材、印刷油墨、石油钻井等方面。

IV 、 Application
HEMC is widely used in water base latex coating , construction, building materials , printing ink , oil drilling and etc.

五、溶解方法
1 、容器中加规定量 1/3 的干净水,并加热至 85 ℃ 以上。
2 、低速搅拌下加入羟乙基甲基纤维素( HEMC ),搅拌至所有物料完全湿透。
3 、再加配方的其他组分搅匀即可。附加至规定量的冷水,降温、溶解。

V 、 Dissolution method
1 、 place the required volume of clean water in a vessel and heat to over 85 ℃ .
2 、 Add HEMC while stirring with the low speed until all the materials are wet completely.
3 、 Add other gradients of the formula until the mixture is uniform. Add the required volume of cold water, Then cool and dissolve.

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.

工业级粘度规格 Viscosity specification of industrial grade HWMC

规格

Specification

粘度范围( mPa·s )

Viscosity Range (mPa·s)

规格

Specification

粘度范围( mPa·s )

Viscosity Range (mPa·s)

备注

Remakrs

5

4-6

15

12-18

可根据用户特殊要求提供其它粘度的产品,快速溶解型和延迟溶解型产品粒度有所不同

Other viscosity pro-ducts can be available according to customers' special requirement . There exits difference between quick dissolving and delayed dissolving products in particle size.

25

20-30

50

40-60

100

80-120

400

350-550

800

600-900

1000

800-1200

1500

1200-1800

2000

1800-3000

4000

3500-5500

6000

5600-7000

8000

7000-10000

10000

8000-12000

1500

12000-18000

20000

18000-30000

40000

35000-45000

60000

50000-70000

80000

70000-90000

100000

≥ 100000

产品型号应用举例:
HG-M-6000 :甲基纤维素,粘度 6000mPas, 普通型。 HG-M-6000 : MC , Viscosity 6000mpas, common.
HG-HM-6000K: 羟丙基甲基纤维素 6000mPas, 快速溶解型。 HG-HM-6000K : HPMC viscosity 6000mPas,quick dissolving
HG-HE-6000Y: 羟乙基甲基纤维素 6000mPas, 延迟溶解型。 HG-HE-6000Y : HEMC 粘性 6000mPas, delayed dissolving




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