PVA 1788LM

PVA 1788LM is a type of low methanol, medium viscosity and partially hydrolyzed polyvinyl alcohol. Low methanol content PVA products are widely used across industries due to their enhanced safety and eco-friendliness.

Descriptions

Applications:

Adhesives & Coatings: Ideal for eco-friendly glues (wood, paper, textiles) and water-based coatings, minimizing VOC emissions and indoor air pollution.
Food Packaging: Safe for biodegradable films and edible packaging, meeting strict food-contact safety standards.
Textiles: Low-toxicity sizing agents for yarns, ensuring compliance with international textile safety regulations.
Pharmaceuticals & Cosmetics: Used in drug coatings, capsules, and skincare products (e.g., gels, masks) for biocompatibility.
Construction Materials: Enhances concrete strength as an additive while reducing onsite chemical hazards.
Advanced Applications: Water-soluble supports for 3D printing, temporary films for electronics, and more.

Product Parameter (Specification)

Артикул	Индекс
Гидролиз (моль%)	87.0 ~ 89.0
Вязкость (мПа.с)	21.0 ~ 26.0
Methanol Content (wt%)	≤0.6
Летучие (wt%)	≤4.0
Зола (wt%)	≤0.4
Значение pH	5 ~ 7
Чистота (%)	≥94

Storage

Продукт следует хранить в сухом помещении с хорошей вентиляцией. Не допускайте попадания влаги на упаковку или воздействия солнечных лучей или дождя. При транспортировке следует использовать чистые и крытые транспортные средства, чтобы избежать загрязнения, влажности или дождя.

Транспорт:

Для транспортировки требуется чистый автомобиль. Следует избегать попадания влаги, дождя и защиты от солнца. Обращаться осторожно, чтобы не повредить упаковку. Хранение с летучими химическими веществами строго запрещено во избежание ухудшения адсорбции.

ЧАСТО ЗАДАВАЕМЫЕ ВОПРОСЫ
Q: Что такое индекс свойств поливинилового спирта?
A: Polyvinyl alcohol PVA is a solid substance, colorless and scentless in the shape of floccus, flake or granule. As it contains plenty of hydroxyl groups in its molecule, PVA is easily soluble in water as well as in organic compounds also containing hydroxyl such as glycerol, glycol, acetic acid, acetaldehyde and benzoic acid, except for general organic solvents in which it is insoluble. When heated up to 130-140℃, PVA gets yellow without essential changes in nature; when at 160℃ for a longer time, it gets darker; at 200℃, inter-molecular dehydration takes place with lower water solubility; at above 200℃, intra-molecular dehydration takes place; nearly at 300℃, PVA is decomposed into water, acetic acid, acetaldehyde and crotonaldehyde. The bulk densities of PVA vary depending on methods of alcoholysis: 0.2~0.27g/ml for high alkali alcoholysis and 0.42~0.52 g/ml for low alkali alcoholysis.

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