Zinc Stearate ซิ้งสเตียเรต สังกะสีสเตียเรต

ซิงก์สเตียเรต, ซิงก์เซียมสเตียเรท, Zinc Stearate

ซิงค์สเตียเรต (Zn(C18H35O2)2) เป็นเกลือสังกะสีที่กันน้ำได้และไม่ละลายในโพลาร์โซลเว้นท์ อาทิ

แอลกอฮอล์และอีเทอร์ แต่จะละลายในอะโรมาติกไฮโดรคาร์บอน (เช่น

เบนซีนและคลอริเนตเตดไฮโดรคาร์บอน) เมื่อถูกความร้อน ซิงค์สเตียเรตเป็นสารถอดแบบที่มีประสิทธิภาพดีที่สุดในบรรดาโลหะสังกะสีทั้งหมด

โดยซิงค์สเตียเรตไม่มีอิเล็กโทรไลต์แต่มีปฏิกิริยาไฮโดรโฟบิก

จึงถูกใช้เป็นสารหล่อลื่นในอุตสาหกรรมพลาสติกและยางได้เป็นอย่างดี

การใช้ประโยชน์:

ใช้เป็นสารหล่อลื่นโลหะในกระบวนการผลิตยาง

โพลียูรีเทน และโพลีเอสเตอร์

ใช้เป็นตัวกระตุ้นปฏิกิริยาในกระบวนการวัลคาไนเซชั่นยางโดยกำมะถันและยาสุก

Zinc stearate is a chemical

substance that has a white, fluffy, powdered appearance and is usually formed

from a combination of stearic acid and zinc oxide. It does not have a strong

odor, although traces of a slight fatty acid scent are not uncommon. Zinc

stearate is sometimes referred to as octadecanoic acid or zinc salt. Since zinc

stearate will dissolve in alcohol and not in water-based liquids, it is used in

many different kinds of commercial products. Its ability to repel water also

makes it suitable for many different kinds of applications. Because of this

versatility, zinc stearate is used by many different types of companies, from

plastic industries to concrete manufacturers. When used to make plastics, zinc

stearate is combined with a co-stabilizing soap called Ba-Cd to help stabilize

the plastic. It does this by mixing with the liquid, which helps make the

material more fluid ? called a plasticizer. This same process is also used in

the cosmetic industry to make different kinds of makeup. It also has a use in

the paint industry where zinc stearate is added to lacquers and paint coatings

for use as a flatting and sanding agent. For concrete manufacturing, it is

mixed as an additive for waterproofing concrete; this same process is also used

to waterproof other products, such as, rockwools, textiles, and paper products.

Even when left in powdered form, it can be used as a drying lubricant or

dusting agent for rubber products.

Zinc stearate is a "zinc

soap" that is widely used industrially. In this context, soap is used in

its formal sense, a metal "salt" of a fatty acid. It is a white solid

that repels water. It is insoluble in polar solvents such as alcohol and ether

but soluble in aromatic hydrocarbons (e.g., benzene and chlorinated

hydrocarbons) when heated. It is the most powerful mold release agent among all

metal soaps. It contains no electrolyte and has a hydrophobic effect. Its main

application areas are the plastics and rubber industry where it is used as a

releasing agent and lubricant which can be easily incorporated. Zinc

carboxylates, e.g. basic zinc acetate, adopt complex formulas, and are not

simply dicarboxylates of zinc. Instead the formula for most zinc carboxylates

is Zn4O(O2CR)6, consisting of a Zn4O6+ core with carboxylate ligands spanning the edges.

Applications

It is widely used as a release

agent for the production of many kinds of objects rubber, polyurethane,

polyester processing system, powder metallurgy. These applications exploit its

"non-stick" properties. In cosmetics, zinc stearate is a lubricant

and thickening to improve texture. It is an "activator" for rubber

vulcanization by sulfur and accelerators. As discovered in the early days of

vulcanization, zinc has a beneficial effect on the reaction of the sulfur with

the polyolefin. The stearate is a form of zinc that is highly soluble in the

nonpolar medium of the polyolefins. Being lipophilic, it functions as a phase

transfer catalyst for the saponification of fats

Zinc Stearate is a white coloured

poweder. It is insoluble in water, but dissolves well in aromatic compounds

like benzene and chlorinated hydrocarbons on heating. In fact, zinc stearate

repels water (hydrophobic). It is the zinc salt of stearic acid. It is

insoluble in alcohol and ethers. It is a very powerful mold resease agent. Zinc

stearate does not contain any electrolyte.

Zinc stearate is used in the

pharmaceutical industry and the cosmetic products like face powder to improve

the smoothness and adhesion. It is used in paint industry as a gloss imparting

agent and a grinding agent. In plastic and rubber processing, zinc stearate is

ued as a releasing agent and lubricant which can be easily incorporated. It is

used as as a metal release agent in rubber, polyurethane and polyester

processing system.

Suggested Application

In cosmetics like face powder & pharmaceuticals to improve properties of smoothness & adhesion.

In paints.

In plastic & rubber

processing.

Applications of Zinc Stearate, Next

1. Combined with other metal soaps, it is used as a stabilizer in all

nn-toxic applications in PVC processing ; i.e. film for food packaging ,

drinking straw, PVC materials for medical purposes. It gives good early color

and lubrication.

2. Water proofing agent.

3. Anti-sticking agent and mould release agent in rubber industry.

4. Inpaint it finds applications;

- In grinding of pigments / sanding sealer.

- Flattening agent - give matte finish

5. In pigment concentrates, elastomers, polystyrene, and other light

colored plastics.

6. Applications where Sulfur staining is not deaired.

Packing size = 10 kg in PP bags with inner PE liner

บจก.ไทยโพลีเคมิคอล จำกัด

ดำเนินธุรกิจ ผลิต และจัดจำหน่าย ซิงก์สเตียเรต, ซิงก์เซียมสเตียเรท, Zinc Stearate

รวมทั้ง เมทัลสเตียเรต, Metal Stearate อื่นๆด้วย ได้แก่

แคลเซียมสเตียเรต, Calcium Stearate, packing 10 kg/bag

แบเรียมสเตียเรต, Barium Stearate, packing 15 kg/bag

แคลเซียมสเตียเรต, Calcium Stearate, packing 10 kg/bag

เลดสเตียเรต หรือ ตะกั่วสเตียเรต, Lead Stearate, packing 20 kg/bag

ซิ้งสเตียเรต หรือ สังกะสีสเตียเรต, Zinc stearate, packing 10 kg/bag

 

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