Low-molecular-weight substances are generally colorless, odorless, tasteless and non-toxic liquids. The pure product of high molecular weight is a milky white waxy solid powder. Low molecular weight: insoluble in water, slightly soluble in turpentine, petroleum ether, toluene, etc. High molecular weight is insoluble in known solvents at room temperature, but it can swell when in prolonged contact with aliphatic hydrocarbons, aromatic hydrocarbons and halogenated hydrocarbons. It is slightly soluble in toluene, amyl acetate and other substances at temperatures above 70â??. Polyethylene can be processed into films, wire and cable sheaths, pipes, various hollow products, injection molded products, fibers, etc., and is widely used in agriculture, packaging, automobiles and other industries. 2.PE can be used to produce high-impact plastic profiles and rubber additives. 3. It can be used as packaging material for industrial and agricultural products and food, as a covering film for crop seedlings, and as an anti-seepage film for channels and reservoirs, etc. 4. It can be used in the food industry as a chewing aid for chewing gum.
1)Chemical Characteristic Low adhesive, high softening point and good hardness with stable chemical characteristics of good heat stability, good dispersion performance, no poison, no frost and mucous membrane; as an ideal interior & exterior lubricant, it can be used as a substitute for liquid paraffin, natural paraffin etc.
2) Properties: White particle,flake or powder, with good lubricant effect, chemical durability and good electrical performance, soluble in aromatic hydrocarbon.
Polyethylene terephthalate (PET), with the chemical formula (C10H8O4) n, is synthesized by exchanging dimethyl terephthalate with ethylene glycol ester or esterification of terephthalic acid with ethylene glycol, followed by condensation reaction to obtain dihydroxyethyl terephthalate. Belonging to crystalline saturated polyester, it is a milky white or light yellow, highly crystalline polymer with a smooth and glossy surface. It is a common resin in daily life and can be divided into APET, RPET, and PETG.
It has excellent physical and mechanical properties over a wide temperature range, with a usage temperature of up to 120. Its electrical insulation is excellent, and even at high temperatures and frequencies, its electrical performance is still good. However, it has poor corona resistance, creep resistance, fatigue resistance, friction resistance, and dimensional stability.
Product advantages:
1. It has good mechanical properties, with an impact strength 3-5 times that of other films, and good bending resistance.
2. Oil resistant, fat resistant, acid and alkali resistant, and resistant to most solvents.
3. It can be used for a long time in the temperature range of 55-60, and can withstand high temperatures of 65 and low temperatures of -70 for short-term use. Moreover, its mechanical properties are minimally affected by high and low temperatures.
4. Gas and water vapor have low permeability and excellent resistance to gas, water, oil, and odor.
5. High transparency, can block ultraviolet rays, and has good gloss.
6. It is non-toxic, odorless, and has good hygiene and safety, and can be directly used for food packaging.
Product application:
The main applications in the field of electronic appliances include: electrical sockets, electronic connectors, rice cooker handles, TV yokes, terminal blocks, circuit breaker casings, switches, motor fan casings, instrument mechanical parts, cash counting machine parts, electric irons, and accessories for electromagnetic stoves and ovens; Flow control valves, carburetor covers, window controllers, foot transmissions, and distribution panel covers in the automotive industry; Machinery industry gears, blades, pulley, pump parts, wheelchair body and wheels, lampshade shell, illuminator shell, drain pipe connector, zipper, clock parts, spray parts.
It can be spun into polyester fiber, also known as polyester.
Can be made into thin films for use as substrates, insulation films, product packaging, etc. for recording, recording, and film production.
As plastic, it can be blown into various bottles, such as cola bottles, mineral water bottles, etc.
Can be used as electrical components, bearings, gears, etc.
1.Polyethylene glycol series products can be used in pharmaceuticals. Polyethylene glycol with low relative molecular weight can be used as solvent, co-solvent, O/W emulsifier and stabilizer, used to make cement suspensions, emulsions, injections, etc., and also used as water-soluble ointment matrix and suppository matrix, solid waxy polyethylene glycol with high relative molecular weight is often used to increase the viscosity and solidification of low molecular weight liquid PEG, as well as compensate other drugs; For drugs that are not easily soluble in water, this product can be used as a carrier of solid dispersant to achieve the purpose of solid dispersion, PEG4000, PEG6000 is a good coating material, hydrophilic polishing materials, film and capsule materials, plasticizers, lubricants and drop pill matrix, for the preparation of tablets, pills, capsules, microencapsulations, etc.
2.PEG4000 and PEG6000 are used as excipients in the pharmaceutical industry for the preparation of suppositories and ointments; It is used as a finishing agent in the paper industry to increase the gloss and smoothness of paper; In the rubber industry, as an additive, it increases the lubricity and plasticity of rubber products, reduces power consumption during processing, and prolongs the service life of rubber products.
3.Polyethylene glycol series products can be used as raw materials for ester surfactants.
4.PEG-200 can be used as a medium for organic synthesis and a heat carrier with high requirements, and is used as a moisturizer, inorganic salt solubilizer, and viscosity adjuster in the daily chemical industry; Used as softener and antistatic agent in the textile industry; It is used as a wetting agent in the paper and pesticide industry.
5.PEG-400, PEG-600, PEG-800 are used as substrates for medicine and cosmetics, lubricants and wetting agents for rubber industry and textile industry. PEG-600 is added to the electrolyte in the metal industry to enhance the grinding effect and enhance the luster of the metal surface.
6.PEG-1000, PEG-1500 is used as a matrix or lubricant and softener in the pharmaceutical, textile and cosmetic industries; Used as a dispersant in the coating industry; Improve the water dispersibility and flexibility of the resin, the dosage is 20~30%; The ink can improve the solubility of the dye and reduce its volatility, which is especially suitable in wax paper and ink pad ink, and can also be used in ballpoint pen ink to adjust ink viscosity; In the rubber industry as a dispersant, promote vulcanization, used as a dispersant for carbon black filler.
7.PEG-2000, PEG-3000 are used as metal processing casting agents, metal wire drawing, stamping or forming lubricants and cutting fluids, grinding cooling lubricants and polishes, welding agents, etc.; It is used as a lubricant in the paper industry, etc., and is also used as a hot melt adhesive to increase rapid rewetting capacity.
Polyethylene glycol is a kind of high polymer, the chemical formula is HO(CH2CH2O) NH, non-irritating, slightly bitter taste, with good water solubility, and many organic components have good compatibility.It has excellent lubricity, moisture
retention,dispersion and adhesion
Polyethylene glycol series PEG200 PEG400 PEG600 PEG800
Product performance: This series product non-toxic, without excitant, soluble in water ethanol and a variety of organic solvents, insoluble in most of the fatty hydrocarbon and ethyl ether .in accordance with different relative molecular mass and different nature. With the increase of molecular weight of the moisture absorption ability, and the corresponding lower solubility, and the frizzing point, relative density, flash point and viscosity increase.
Polyethylene glycol is a kind of high polymer, the chemical formula is HO(CH2CH2O) NH, non-irritating, slightly bitter taste, with good water solubility, and many organic components have good compatibility.It has excellent lubricity, moisture
retention,dispersion and adhesion
Polyethylene glycol series PEG200 PEG400 PEG600 PEG800
Product performance: This series product non-toxic, without excitant, soluble in water ethanol and a variety of organic solvents, insoluble in most of the fatty hydrocarbon and ethyl ether .in accordance with different relative molecular mass and different nature. With the increase of molecular weight of the moisture absorption ability, and the corresponding lower solubility, and the frizzing point, relative density, flash point and viscosity increase.
The products are non-toxic, non-irritating, water-soluble and soluble in many organic compounds. They are widely used in cosmetic, pharmaceutical, chemical fiber, rubber, plastic, papermaking, paint, electroplating, pesticide, metal processing and food processing industries due to their excellent lubricity, moisture, dispersity, adhesives, antistatic agents and softeners.
The products are non-toxic, non-irritating, water-soluble and soluble in many organic compounds. They are widely used in cosmetic, pharmaceutical, chemical fiber, rubber, plastic, papermaking, paint, electroplating, pesticide, metal processing and food processing industries due to their excellent lubricity, moisture, dispersity, adhesives, antistatic agents and softeners.
Application:
Peg is best for soft capsules. Because PEG is a liquid, it has extensive compatibility with various solvents, is a good solvent and solvent, is widely used in liquid preparations, such as oral liquid, eye drops, etc.
Storage:
The product is non-toxic and difficult to burn. It can be handled according to the general chemical transportation regulations. It can be stored in a dry and ventilated place to avoid sunlight and rain.
