| Customization: | Available |
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| CAS No.: | 9003-35-4 |
| Formula: | C7h6o2 |
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Phenolic resin is a kind of synthetic plastics, colorless or brown transparent solid, is widely used for electrical equipment, also commonly known as bakelite heat-resistant flame resistance water resistance and good insulation, good resistance to acid, alkali resistance is poor, mechanical and electrical performance is good, easy to cut, divided into two categories, thermosetting plastics and thermoplastic synthetic with different components, different function of modified phenolic resin can be obtained, it has characteristics of different, such as alkali resistance wear resistance oil resistance corrosion resistance, etc.
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Material
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pheonlic resin
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Shape
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Liquid
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Size
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30kg/200kg/240kg
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MOQ
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1kg
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em
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Unit
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Standard
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Testing method
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Appearance
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--
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Transparent light yellow liquid
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GB/T 8237.4.1.1
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Viscosity
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25ºC,Pa.S
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0.30~0.45
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GB/T 7193.1
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Gel time
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25ºC,min
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11.5-23.5
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GB/T 7193.6
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Acid value
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mgKOH/g
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20.0-28.0
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GB2895
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solid content
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%
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65.0-71.0
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GB/T 7193.3
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Heat stability,80ºC
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≥24
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h
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GB/T 7193-2008
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Gel time ,25ºC
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10-32
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min
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GB/T 7193-2008
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>> Soap industry
The rosin is cooked together with soda ash to form a rosin soap. Rosin soap has great detergency, is soluble in water, dissolves oil and is easy to foam. The rosin is sticky and makes the soap less prone to cracking and rancidity.
>> Paper industry
Rosin is used as a papermaking compound in the paper industry. Rosin is made into rosin sodium soap, which is a rubber compound. The rubber compound is mixed with the pulp and added to the alum, so that the rosin becomes water-insoluble free resin acid particles attached to the small fibers, and the pulp is heated on the drying cylinder. When the rosin is softened and filled between the fibers, this effect is called "sizing" or "sizing". After the paper is "sliced", it can enhance water resistance, prevent ink penetration, improve strength and smoothness, and reduce stretch.
>> Paint industry
Rosin is easily soluble in various organic solvents, and is easy to form a film and has a luster. It is one of the basic raw materials for paints and coatings. The role of rosin in the paint is to make the paint bright and bright, dry quickly, and the paint film is smooth and not easy to fall off.
>> Ink industry
Rosin is mainly used as a color carrier in printing inks and enhances the adhesion of ink to paper. If the rosin is not used in the ink, the printed ink will be dull and unclear.
>> Adhesive industry
A binder based on rosin ester and hydrogenated rosin ester, which is often used as a hot melt adhesive, a pressure sensitive adhesive, and a rubber tackifier.
>> Rubber industry
Rosin is used as a softener in the rubber industry to increase its elasticity. Disproportionated rosin potassium soap can be used as a synthetic rubber.
>>Food industry
The hydrogenated rosin glyceride is heated and melted together with natural gum gum, wax, etc., and then added with spices, sugar and pigment to form a chewing gum. When slaughtering pigs, cattle and sheep in a slaughterhouse, the hair remaining in the animal body and head can be depilated with 88-94% molten rosin and 6-12% cottonseed oil after being treated with a depilatory machine. To remove.
>>Electrical industry
The insulating oil is made of 35% rosin and 65% bright oil. It is used as a protective film on the cable to provide insulation and heat resistance. Rosin is mixed with bakelite and other synthetic resins for use as an insulating varnish.
>>Building materials industry
Rosin is mainly used as a concrete foaming agent and floor tile binder in the building materials industry. Rosin is also used as a binder asbestos tiles. Rosin and linseed oil, calcium carbonate, charcoal, pigments and the like may be mixed together to manufacture carpet tiles.
>>Making a finishing solution
Due to the solubility, volatility, and volcanism of rosin, it can be quickly condensed into a "sturdy and transparent film" principle. The painter protects the picture and prevents the "sketching" from being smashed. : A rosin powder, nine parts of alcohol, or xylene solvent ratio, first put the rosin into a well-sealed glassware, then pour the alcohol, or xylene, cover the lid, and dissolve it two days later. When using, shake it into the watering can, 20 cm away from the screen, spray evenly onto the screen, spray at any time, volatilize at any time, dry out after a few minutes, and then don't be afraid to be smashed.
Note: There can be no more rosin, and more will "yellow, darken"!
>>Flux
Since the metal surface is in contact with air, an oxide film is formed. The higher the temperature, the thicker the oxide layer. This oxide film prevents the liquid solder from infiltrating the metal, just as if the glass is oiled, the water will not wet the glass. Flux is a special material for removing oxide film, also known as flux.
Flux has three major effects:
>>Musical instrument
Rosin is applied to the bow of erhu, violin and other instruments to increase the friction of the bow and the strings. The refined transparent color block rosin is the best, and the natural crystalline pine is secreted and solidified on the pine.
Lipids can also be substituted
The popular method of playing rosin is to crack a piece of bamboo in advance and then put the rosin in it. Then use a fire to the bamboo pieces, so that the rosin is burned and dripped onto the drum. This method is called "hot". Although the fragrant incense is more convenient and convenient for the playing, it hinders the performance of some of the bowing techniques, and the piano skin is not clean enough.
Nowadays, the more popular one is "wiping", which is rubbed with rosin directly on the bow hair. This will pull at least an hour after rubbing a rosin. Practice has proved that the sound of the piano played after the "wiping" is not very ideal. After two or three minutes of playing, the piano sound gradually turns into the normal state. When rubbing the incense, the force should not be too heavy, so as not to break the bow hair.
The old rosin will have an effect a few hours after using the new rosin.
Without rosin, the bow will slip and not make a sound when it is played on the strings. With a little rosin, the bow hair will have some stickiness, and when it is played, it will "catch" the string and let it vibrate to make a sound. When rosin is bought, it is wrapped in a cloth or a small box. It is not only sticky but also very hard. Generally, it can be used for a long time. The harder the rosin, the more easily it is broken.
Many brands of rosin come in two colors, but at the same price, light like honey, deep like licorice. When playing, the rosin turns into a powder, and its color is the same white.
Rosin is very hard, and a brand of rosin may be harder than another brand of rosin. When the rosin is pressed with a bow, the hardness can be identified. Soft rosin will make the strings vibrate better, but because they are too sticky, they are prone to noise, especially on the gut strings.
FAQ:
Q1:Which kind of payment terms do you accept?
For small order,you can pay by T/T,Western Union or Paypal,nomal order by T/T to our company account
Q2:Can you give me a discount price?
Surely,It depend on your qty
Q3:How can i get a sample?
free samples is available,but freight charges will be at your account and the charges will be return to you or deduct from your order in the future.
Q4: How to confirm the Product Quality before placing orders?
A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
Q5:How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
Q6: What's the shipping way?
A: Express such as EMS, DHL, TNT, Fedex, UPS, air transportation, sea transportation,etc per your request.
Q7: How about the packing?
A: Factory standard packing. Special packing can be accept per your request.
Q8:How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
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