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6026 羟丙基甲基纤维素
HPMC

  以木质纤维作为原料,再经烧碱处理后与氯化乙烯、氧化丙烯或氧化乙烯等醚化剂发生反应所产生的粉状纤维素醚。常用粘度 4 万 cps ,常用于水泥外加剂、防水堵漏、助剂。①特性:在干粉料中添加 0.3~0.5%HPMC 可增强材料的保水性,防止水泥砂浆过快干燥和硬化开裂现象;增加砂浆的可塑性,改善施工作业性;提高砂浆的粘结性能,使它能更好粘结基材;可以防止施工时砂浆及出现滑移现象。②应用推荐:自流平、粉刷石膏、抹灰砌筑砂浆、瓷砖粘结剂、保温砂浆、装饰砂浆、内墙腻子、外墙腻子。

  在建筑材料的配方中,可用于: ① 石膏基胶带的粘结剂和填缝剂; ② 水泥基砖、瓦与基础的粘结; ③ 石膏板基的灰泥; ④ 水泥基的结构灰泥; ⑤ 油漆和除漆剂的配方中。 20kg / 包 ×55 元 /kg



羟丙基甲基纤维素 (HPMC)
Hydroxypropyl Methyl Cellulose

一、名称及结构 Designation and Molecular formula
羟丙基甲基纤维素( HPMC ) Hydroxypropyl 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

Industrial grade

医药级 HG-HMP

Pharmaceutical grade

HG-E

HG-F

HG-K

 

外观

Appearance

白色或类白粉末

White or off-white powder

甲氧基含量

Methoxyl group

28.0~30.0%

27.0~29.0%

19.0~24.0%

19.0~30.0%

羟丙氧基含量

Hydroxy propyl group

7.0~12.0%

4.0~7.5%

4.0~12.0%

4.0~12.0%

凝胶温度

Gel temperature

58~ 65 ℃

62~ 70 ℃

70~ 91 ℃

/

酸碱度

PH

4.0~8.0

4.0~8.0

粘度( 2% 水溶液, 20 ℃ )

Viscosity (2%solution, 20 ℃ )

5~100000mPa·s

0.005~0.075Pa·s

细度

Finesses

80~100mesh

80~100mesh

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%

砷盐

Arsenic

/

≤ 0.0002%

重金属

Heavy metals

/

≤ 20ppm

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 2005 版、美国药典 SP27 版标准。
The pharmaceutical grade complies with USP27 and chinese Pharmacopoeia2005.

可根据客户要求提供不同粘度规格的产品
Various viscosity products are available according to customer's requirements.

三、理化性质
1 、外观:白色或类白色粉末。
2 、颗粒度: 100 目通过率大于 98.5% ; 80 目通过率 100% 。特殊规格的粒径 40~60 目。
3 、炭化温度: 280~ 300 ℃
4 、视密度: 0.25~0.70/cm 3 (通常在 0.5g /cm 3 左右),比重 1.26~1.31 。
5 、变色温度: 190~ 200 ℃
6 、表面张力: 2% 水溶液为 42~56dyn/cm.
7 、溶解性能:溶于水及部分溶剂,如适当比例的乙醇 / 水、丙醇 / 水等。水溶液具有表面活性。透明性高,性能稳定,不同规格的产品凝胶温度不同,溶解度随粘度而变化,粘度愈低,溶解度愈大,不同规格 HPMC 其性能有一定差异, HPMC 在水中的溶解不受 pH 值影响。
8 、 HPMC 随甲氧基含量减少,凝胶点升高、水溶解度下降,表面活性也下降。
9 、 HPMC 还具有增稠能力,耐盐性低灰粉、 pH 稳定性、保水性、尺寸稳定性、优良的成膜性、以及广泛的耐酶性,分散性和粘结性等特点。

III 、 Physical and chemical properties
1 、 Appearance: white or off-white powder
2 、 Particle size: about 98.5% through 100mesh; 100% through 80mesh. Special particle size is about 40~60mesh;
3 、 Carbonation temperature: 280~ 300 ℃
4 、 Apparent density: 0.25~0.70/cm 3 (generally about 0.5g /cm 3 ), specific gravity is 1.26~1.31.
5 、 Temperature to change color:190~ 200 ℃ ;
6 、 Surface tension:42~56dyn/cm,2% solution.
7 、 Dissolution properties: dissolve in water and some solvents, such as , the suitable proportion of ethanol/water, Its, aqueous solution provides surface activity and high transparence and stable properties. Various products have different gel temperatures. Solubility changes with viscosity. Lower the viscosity is , higher the solubility is .Different types of HPMC have different properties. Its dissolution is not subject to PH.
8 、 With the reduction of methoxyl content, gel point rises, solubility in water and surface activity decrease.
9 、 HPMC has the ability of thickening , anti-salt, water retention, good film-forming, anti-enzyme , dispersing , bonding, and low ash content.

四、主要用途
本品工业级 HPMC ,主要用途为聚氯乙烯生产中做分散剂,系悬浮聚合制备 PVC 的主要助剂。别外,在其化石油化工、涂料、建材、除漆剂、农业化学品、油墨、纺织印染、陶瓷、造纸、化妆品等产品生产中作增稠剂、稳定剂、乳化剂、赋形剂、保水剂、成膜剂等。在合成树脂方面的应用,可使获得的产品具有颗粒规整、疏松、视比重适宜,加工性能优良等特点,从而基本上取代了明胶和聚乙烯醇作分散剂。另外,在建筑工业施工过程中,主要用于砌墙,灰泥粉饰,嵌缝等机械化施工中;特别在装饰性施工中,用做粘贴瓷砖、大理石、塑料装饰,粘巾强度高,还可以减少水泥用量。用料行业中做增稠剂,可使图层光亮细腻,不脱粉,改善流平性能等。
本品医药级为多用途的药用辅料。可作为增稠剂、分散剂、乳化剂、和成膜剂等。在药物片剂中作粘合剂。可显著提高药物的溶出度,并可作薄膜包衣材料,可增强片剂的防水性,也可用于食品。

IV 、 Application
The industrial product is mainly used as dispersing agent in PVC production, which is the main aid in suspension polymerization to produce PVC . Moreover, It works as thickener, stabilizer, emulsifier, excipient, moisture retentive agent, film former, and so on in petroleum industry , coating , building materials , Varnish remover , agricultural chemicals, printing ink , textile, printing and dyeing , ceramics , paper , cosmetics . HPMC can make the product have so good shape and loosen and suitable specific gravity and excellent machining prop. erties that it takes place of gel and polyvinyl alcohol as dispersing agent In addition , it is mainly used in cement mortar and joint in mechanical construction . Especially in decorating construction, it is used as binding of ceramic tile, marble and plastics. Because of its high strength, the consumption of cement can be decreased. It can be used as thickener in coating to make coating bright and exquisite and avoid the coating flaking off and improve leveling.

The pharmaceutical product is multi-purpose druggist supp-lement. It can be used as adhesive in tablet to improve dissolution ob-viously. It can be used as film coating material to enhance waterproof ability of tablet . It also can be added into foods.

五、溶解方法
取所需数量的热水,放入容器中加热至 85 ℃ 以上,在慢慢搅拌下逐渐加入本品,纤维素起初浮在水面上,但逐渐被分散,形成均匀的淤浆,在搅拌下冷却溶液,或者将 1/3 或 2/3 的热水加热至 85 ℃ 偿还,加入纤维素,得到热水浆料,再加入剩余量的冷水(或冰块),保持搅拌,冷却得到的混合物即成。

V 、 Dissolution method
Add the required amount of hot water in a vessel and heat to above 85 ℃ . Add HPMC gradually while slow stirring . HPMC floats on the surface of the water at the beginning , and then disperses gradually and forms uniform slurry. The solution is cooled by stirring . Or, add 1/3to 2/3 of required hot water, then heat to above 85 ℃ . Add HPMC to gain hot water slurry and then add the remaining ice water or ice. Keep stirring. Cool the final mixture.

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. v





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