Assay of Zn Above 96% Zinc Stearate Can Improve The Light Stability of PVC Products

• Customization: Available
• CAS No.: 557-05-1
• Formula: Zn[CH3(CH2)16coo]2
• Model NO.: Zinc Stearate
• Certification: REACH
• Environmental Protection: Yes
• Color: White
• Kind: Stearate
• Appearance: Powder
• Assay of Zn: Above 96.0%
• Free Acid: Under 0.8%
• Loss on Drying: Under 1.0%
• Melting Point: 120+5 Temperature
• Particle Size( Pass 325 Mesh): Above 99%
• Characters: Greasy to Touch Without Sand Sense
• Applications: Applied in The Manufacturing of PVC Innoxious
• Transport Package: Polywoven Bag
• Specification: PE film inner lined. Net wt: 20kg/bag
• Trademark: CHANGSHA ZHONGYI
• Origin: Hunan China
• HS Code: 34039900
• Production Capacity: 30000/Ton/Year

Product Description

Zinc Stearate
Product name: Zinc Stearate
Molecular formula: Zn[CH₃(CH₂)₁₆COO]₂
Molecular formula:
CAS NO: CAS NO.: 557-05-1
Characters: Zinc stearate is white powder, greasy to touch without sand sense, fattyodor, innoxiously, flammable, insoluble in water, solve in hot ethanol, benzol etc. slowly decomposes into stearic acid and zinc salts when reacting with strong acid.
Applications:
Zinc stearate can be applied in the manufacturing of PVC innoxious products, and its performance will be better if use with calcium stearate and darium stearate, can improve the light stability of PVC products. lts dosage in the PVC usually not more than 1%.While applying in rubber products, PF,PE,PS and EPS polymer additives even the manufacturing of pencil core, dosage: usually 1%-3%.
 

Specification

Test items	Specification
Appearance	White and fine powder
Assay of Zn	≥96.0
Free acid	≤0.8%
Loss on drying	≤1.0%
Melting point	120+5ºC
Particle size( Pass 325 mesh)	≥99%

 Package: Polywoven bag, PE film inner lined. Net wt: 20kg/bag. We also can packaccording to customers reguirements.
 

Raw material proportioning and mixing of solar EVA adhesive film

The raw material of solar energy EVA adhesive film generally adopts EVA particles for photovoltaic from foreign original manufacturers such as DuPont, Mitsui and Bridgestone, which can be directly used for mixing without granulation. However, if EVA particles from domestic manufacturers, especially some small manufacturers, are used as raw materials, because their sources are often very complex, even including the leftover materials from photovoltaic module factories, this material needs to be reprocessed, crushed and granulated, and the corresponding process parameters and mixing proportion must be controlled. Even if this is done, the quality of the final finished EVA is still difficult to control. If it is continued to be used in the photovoltaic industry, especially in the manufacturing of large components, it will leave many hidden dangers.
In the process of mixing raw materials of EVA film, the proportion of some additives is very low (such as less than 0.1%), so how to make these low proportion additives mix evenly is a very important process problem. The method of multiple mixing can be adopted to mix the small proportion of additives with a small amount of other materials, then with more other materials, and finally with all other materials. After such mixing for many times, the problem of uniformity of low proportion additives can be solved.
In order to ensure the accuracy of proportioning and the uniformity of mixing, full-automatic vector weighing and mixing device can be selected. In order to prevent the overheating of EVA raw materials in mixing, low-temperature and low-speed mixer should be selected.

Applications

                                                                                                                                                                                                                                             

Why Choose Us

Factory Scale                 

Changsha Zhongyi Chemical Co., Ltd. is a chemical additives company specializing in serving the fields of rubber, plastics and so on. The company is mainly engaged in TGIC curing agent; Gm3701, Si69, 171, 172, 550, 560, 570 and other silane coupling agents; BIPB, DCP, dhbp, tmch335 crosslinking agent; BPO, TbpB initiator and other peroxide series products; TAIC, TAC, TMPTMA vulcanization accelerators, antioxidants, TEP expanded microspheres, synergists, TBC flame retardants, SC sodium cyanate pharmaceutical intermediates, essence, polymer enhancers, foaming agents, plasticizers, fluorescent brighteners, solid degradation agents, UV irradiation crosslinkers and other products. Its products have passed IS09001 (2015) international quality system certification and ISO14001 (2015) international environmental management system certification. The products are mainly used in: CPE EPDM wires and cables, automotive rubber parts, EVA soles, floor mats and other sports materials, solar photovoltaic cell packaging films, thermoplastic plastics and resins, flame retardant textiles, flame retardant PP, flame retardant XPS, EPS, rubber conveyor belts, polymer material modification, pharmaceutical and pesticide intermediates, glass fibers, paint coatings, steel heat treatment, mining gold extraction and other fields.
The company will follow the policy of "professionalism, pragmatism, innovation, high quality and efficiency", seize opportunities, meet challenges and make new contributions to accelerating the development of China's chemical industry! Our aim is to serve our customers with professional standards, excellent product quality and considerate and perfect service.
The company pursues development through science and technology, survival through quality, and satisfaction through professional services. We are willing to work with colleagues in chemical industry and people of insight from all walks of life for common development and hand in hand; Always take "honesty and trustworthiness, quality assurance, customer first, high-quality service" as the goal, and realize "win-win interests, seek common development, and keep pace with the times" with merchants as its own responsibility, and make greater contributions to the country's economic take-off!

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