Hydroxy Propyl Methyl Cellulose-XI 'AN FUDIOU CHEMICAL CO., LTD.

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Hydroxy Propyl Methyl Cellulose

发布日期：(2016-8-3) 点击次数：601

Hydroxy Propyl Methyl Cellulose(HPMC) is non-inoic cellulose ethers prodcued from natural high

molecular cellulose through series of chemical changes. HPMC is specialized in construction industry as

an additive in all kinds of dry powder putty, dry mortar, tile adhesive, Water resistant putty,

external wall insulation mortar, especially used for building putty and Mortar.

Chemical structural formula:

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

R is CH 3 or CH 2 CH(OH)CH 3

Technical indicator:

HPMC(construction grade)

Type Item			HPMC
			HH				HM				HL
Methoxy content %			28~30				27~29				19~24
Hydroxypropyl content %			7~12				4~7.5				3~12
Gelation Temperature ℃			58~64				62~68				70~90
Construction grade more use the HPMC of low substitution degree.
Viscosity			50~100000mpa.s Viscosity test: Brookfield RV, 2%, 20 ℃, test under neutral conditions
Note:The viscosity is measured by Brookfield viscometer on conditions of 2% neutral aqueous solution, Brookfiled 20℃,20RPM. Vatious viscosity products are available according to customers’ requirement.
Use production of HPMC									Recommendation viscosity of type (mpa.s)
Ceramic tile adhesive				Base adhesive					HL40Z,HL50Z
				Standard adhesive					HL40Z
				Enhance adhesive					HL30Z
Putty				Putty of Interior and exterior wall					HL30Z,HL40Z
Cement mortar				Bonding mortar/plaster motar					HL30Z ,HL40Z
				Vitrified beads insulation/poly stupid of insulation					HL50Z,HL60Z

				Plasterer/patch/color mortar/ Aerated concrete cement mortar					HL40Z,HL40ZS
				Masonry mortar					HL50Z,HL60Z,HL50ZS, HL60ZS
				Extrusion molding floor slab					HM8ZS
Gypsum-based				Plaster gypsum,Plasterboard material，					HL40ZS,HM15TS,HL50ZS, HL60ZS
PH					5~8
Particle Size					40~120
loss on drying					≤8.0Wt ％
Burning residue					≤3.0Wt ％
oxide					≤2.5 ％
Arsenic					/
Heavy metals					/
Hygienics examine		Microbial quantity			/
		mildew quantity			/
		Colibacilus			/
Type	Viscosity range(cp)				Type	Viscosity range(cp)		Type		Viscosity range(cp)
8Z	8000-12000				40Z	35000-4500		60z		55000-65000
30Z	25000-35000				50z	45000-55000		70z		65000-77000
Products with S represent with surface treatment.
Z value in the table = 1000

Physical and chemical properties:

1.Apperance: white or off-white power.

2.Partical size: about 95% through 100mesh;100% through 80mes.Special size is about 40~60 mesh.

3.Carbonation temperature: 280~300℃.

4. Bulk density:320~350kg/m3(generally about 0.5g/cm3,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 solvent. Such as, the suitable proportion of ethanol/ water, propanol/water. It’s aqueous solution provides surface activity and high transparence and stable properties. Various products have different gel temperatures. Solubility changes with viscosity. The lower the viscosity is the higher the solubility. 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 decrease.

9. HPMC has the ability of thickening, anti-salt, water retention, good film-forming, anti-enzyme, dispersing bonding, and low ash content.

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