Overview of the types of thinners

Diluents are also called "fillers." When the raw drug is processed into a powder, or in order to make it easy to spray the added inert material for dilution. Such as: clay, kaolin, clay, talc and so on.

Thermosetting resins require the addition of a diluent to reduce its viscosity and facilitate further processing. These diluents are in fact organic solvents that are less expensive than resins, and therefore also contribute to a reduction in processing costs. For example, the commonly used non-reactive diluents for epoxy resins are acetone, methyl ethyl ketone, cyclohexanone, benzene, toluene, xylene, n-butanol, styrene, and the like. For thermoplastic resins, the purpose of adding the solvent is mainly the process requirements, because the addition of the solvent can be used as a temporary measure to reduce the viscosity of the polymer, so that the polymer can be processed into products - if the appropriate solvent can be dissolved in the polymer Adhesion, polymer solution can be used for coating, wet spinning, and adding solvent.


However, the solubility characteristics of polymers are very different from those of small-molecule compounds: there is a solubility limit for low-molecular-weight crystals such as sucrose—in grams of soluble sucrose per liter of solvent; but for amorphous polymers, Its solubility is usually not limited, ie it can be compatible with the solvent in any ratio.

The essence of polymer dissolution is understood to be that the “porosity” caused by thermal motion between the polymer molecular segments is immediately occupied by the more mobile solvent molecules, and this process can continue until all the polymer molecules are separated from each other and become a solution. ". The process of dissolving a polymer can also be viewed as a controlled diffusion process. Sometimes the notion of acquisitiveness can be said to be that the polymer dissolves the solvent rather than vice versa.

If the polymer molecule is cross-linked, the movement of the segment is limited and a lightly cross-linked polymer swells or dissolves slightly in the solvent until the penetrating or diffusing force is the elastic contraction of the stretched polymer. The force balances, but it does not dissolve into a solution that moves easily. The highly cross-linked polymer does not undergo segmental movement nor absorbs this liquid, so it is impossible to swell or partially dissolve. There is usually a critical dissolution temperature for soluble polymers below which the system is partitioned into two phases: an insoluble swelling polymer and an almost pure solvent.


A large amount of non-solvent can often be added to the polymer solvent without precipitating the polymer. Adding these non-solvents to the head improves solubility, and they are often referred to as latent solvents. It is often the case that the mixture of two non-solvents is a good solvent for a certain polymer. For example, the solvent for nitrocellulose is an ether-alcohol mixture, and the reverse is also present. For example, cellulose acetate can be dissolved in aniline or strong acid, respectively. , but insoluble in their mixture.

The most useful way to increase the rate of dissolution of powdered polymers is to first suspend the powdered material in a non-solvent and then add the true solvent. This procedure prevents the polymer particles from coagulating; the second is heating. To speed up the dissolution rate.

China General Purpose Thinner Commonly Used Grades: x-1:· Nitrocellulose Thinner x-3: Perchloroethylene Paint Thinner x-4: Phenolic Paint Thinner x-5: Acrylic Paint Thinner x-6: Alkyd Paint thinner x-7: Epoxy paint thinner x-9: Phenolic paint thinner x-13: Silicone paint thinner

Common thinner

Banana water, also known as the day that water, the main component is isoamyl acetate, volatile highly flammable, explosive and toxic, is a dangerous product, mainly because there is a stronger banana smell, so called banana water. Ethyl acetate, n-butyl acetate, benzene, toluene, acetone, ethanol, and butanol are formulated into a mixed solvent according to a certain weight percentage, which is called banana water. Pure banana water is a colorless, transparent and volatile liquid. It has a strong banana odor, is slightly soluble in water, is soluble in various organic solvents, and is flammable. It is mainly used as a solvent and thinner for painting. Preparation method of banana water: take n-butyl acetate 15%, ethyl acetate 15%, n-butanol 10-15%, ethanol 10%, acetone 5-10%, benzene 20%, xylene 20% by weight ratio. Then mix it well to make banana water. Commonly used as a thinner for furniture paints, item paints, and automotive paints.

Common diluents

515-diluent

1. Thinner Appearance: Colorless transparent liquid.

2. Diluent performance: screen ink standard thinner, slightly clear fragrance, faster volatilization.

3. Thinner use: Dilution of screen printing inks, printing inks and cleaning screens.

616-slow dry thinner

1. Thinner Appearance: Colorless transparent liquid.

2. Diluent performance: screen ink slow drying thinner, drying speed is slow, help the ink defoaming, leveling and increase light, effectively prevent blocking the network.

3. Thinner use: Dilution of silk screen printing ink, pad printing ink.

UV-SG Thinner


1. UV-diluent Appearance: colorless and transparent liquid.

2. UV-diluent performance: UV-type diluent, can effectively reduce the viscosity of UV inks.

3. UV-diluent use: UV ink universal thinner, added in an amount of 5-10% of the weight of the ink.

4. UV-diluent UV cure speed: Moderate.

PP-treated water

1. PP treated water appearance: colorless transparent liquid.

2. PP treatment of water performance: Through the surface treatment of PP and PP and PE mixed material, can significantly improve the adhesion of the ink. Instead of flame treatment.

3. PP treatment water use: surface wiping treatment of PP and PP and PE mixed materials

416-opening water 436-opening water

1. Open water appearance: colorless transparent liquid.

2. Opened water use: YPS and PS ink special thinner to prevent ink burning surface.

UV-SL Thinner

1. UV Thinner Appearance: Colorless transparent liquid.

2. UV Diluent Performance: UV-type diluent, can effectively reduce the viscosity of UV inks.

3. UV Thinner Use: UV ink universal thinner, added in an amount of 5-10% of the weight of the ink.

4. UV Thinner UV Curing Speed: Moderate.

UV-SB thinner

1. UV Thinner Appearance: Colorless transparent liquid.

2, UV thinner performance: UV type thinner, can effectively reduce the viscosity of UV ink.

3. UV Thinner Use: UV ink universal thinner, added in an amount of 3-5% of the weight of the ink.

4. UV Thinner UV Curing Speed: Slower.

UV-SW Thinner

1. UV Thinner Appearance: Colorless transparent liquid.

2. UV Diluent Performance: UV-type thinner, can effectively increase the UV ink curing speed, improve the ink's hardness and chemical resistance.

3. UV Thinner Use: UV ink universal thinner, added in an amount of 3-5% of the weight of the ink.

4. UV Thinner UV Curing Speed: Fast.

LD viscosity reduction paste

1. Viscosity paste appearance: translucent jelly paste.

2. Viscosity-reducing paste properties and uses: transferred to screen printing or pad printing ink, can effectively reduce the viscosity of the ink, eliminate wire drawing, and effectively improve the three-dimensional printing graphics and clarity, the amount of ink added to the weight of 5-25% , It can be used after adding the ink and stir it evenly, it can replace the solvent type diluent.

UV viscosity reduction paste

1. UV Viscosity Paste Appearance: Translucent jelly-like paste.

2. Performance and use of UV viscosity-reducing paste: transferred to UV screen printing or pad printing ink, can effectively reduce the viscosity of the ink, eliminate wire drawing, and effectively improve the three-dimensional printing graphics and clarity, the amount of ink added to the weight of 3- 5%, after adding it, and the ink can be used with sufficient stirring.

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