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Product Description
Epoxy resin is a polymer with the molecular formula (C11H12O3)n, which is a general term for a class of polymers containing more than two epoxy groups in the molecule. It is the condensation product of epichlorohydrin and bisphenol A or polyol. Due to the chemical activity of the epoxy group, a variety of compounds containing active hydrogen can be used to make it ring-opening, curing and crosslinking to generate a network structure, so it is a thermosetting resin. Bisphenol A-type epoxy resin is not only the largest production, the most complete varieties, and the new modified varieties are still increasing, the quality is constantly improving.
Ordinary liquid epoxy resin appearance
Epoxy resins have secondary hydroxyl groups and epoxy groups, and the secondary hydroxyl groups can react with isocyanates. Epoxy resin is directly added to the hydroxyl group-containing component of the polyurethane adhesive as a polyol. Using this method, only the hydroxyl group participates in the reaction, and the epoxy group fails to react.
Use the carboxyl group of the acid resin to open the epoxy ring, and then react with the isocyanate in the polyurethane adhesive. It is also possible to dissolve the epoxy resin in ethyl acetate, add phosphoric acid to heat the reaction, and add its adduct to the polyurethane adhesive to improve the initial adhesion, heat resistance and hydrolysis stability of the adhesive. Alcohol amines or amines can also be used to react to form polyols, and the presence of tertiary nitrogen atoms in the adducts can accelerate the NCO reaction.
Using epoxy resin as the polyol component combines the advantages of polyurethane and epoxy resin, and has good bonding strength and chemical resistance. The epoxy resin used in the manufacture of polyurethane adhesives generally uses EP-12 and EP-13 , EP-16 and EP-20 and other varieties.
Dosage
Add and use according to the user's formula.
Storage
This product has stable performance in long-term indoor storage at 5℃-35℃.
Package product
Packed in 25kg plastic drum.
1. Various forms.
2. Convenient curing. Choose a variety of different curing agents, epoxy resin system can be cured almost in the temperature range of 0 ~ 180 ℃.
3. Strong adhesion. The existence of polar hydroxyl groups and ether bonds inherent in the epoxy resin molecular chain makes it have high adhesion to various substances. The low shrinkage of epoxy resin when curing and the low internal stress generated also help to improve the adhesion strength.
4. Low shrinkage.
5. Mechanical properties. After curing, the epoxy resin system has excellent mechanical properties.
6. Electrical properties.
7. Chemical stability.
8. Dimensional stability.
9．Mold resistance.
Classification details
Type classification
According to the molecular structure, epoxy resins can be broadly classified into five categories:
1. Glycidyl ether epoxy resin
2. Glycidyl ester epoxy resins
3. Glycidyl amine epoxy resins
4. Linear aliphatic epoxy resins
5. alicyclic epoxy resins
User's Guide
Basic Introduction
Epoxy resins and epoxy adhesives are non-toxic in themselves, but many epoxy resins are "toxic" because solvents and other toxic substances are added during the preparation process, and the domestic epoxy resin industry is trying to keep epoxy resins "non-toxic" through water-based modification and avoiding adding. The domestic epoxy resin industry is trying to keep the epoxy resin "non-toxic" by water-based modification and avoiding additive. Epoxy resins are generally used together with additives to obtain application value. Additives can be selected according to different uses, and the common additives are as follows: (1) curing agent; (2) modifier; (3) filler; (4) diluent; (5) others. Among them, the curing agent is an essential additive, whether for bonding agent, coating, casting material are required to add curing agent, otherwise the epoxy resin can not be cured. Because of different performance requirements, there are different requirements for epoxy resin and curing agent, modifier, filler, diluent and other additives.
Operation requirements
Selection of curing agent
1. Curing agent type:
Epoxy resin raw material
2、The amount of curing agent
(1) amines for crosslinking agent according to the following formula:
Amine dosage = MG/Hn, where: M = molecular weight of amine; Hn = number of active hydrogen; G = epoxy value (epoxy equivalent per 100 grams of epoxy resin)
(2) Calculated by the following formula when using anhydride:
The amount of anhydride = MG (0.6~1)/100 where: M = molecular weight of anhydride; G = epoxy value (0.6~1) is the experimental coefficient
3. Principle of choosing curing agent: The curing agent has a great influence on the performance of epoxy resin, and is generally chosen according to the following points.
(1) Choose from the safety: generally require a small toxicity is good, to facilitate safe production.
(2) Choose from the cost.
Selection of modifier
(1) polysulfide rubber: can improve the impact strength and peel resistance.
(2) polyamide resin: can improve the brittleness, improve the bonding ability.
(3) polyvinyl butyral: improve impact tanning resistance.
(4) Nitrile rubber: improve impact tanning resistance.
(5) phenolic resins: can improve the temperature and corrosion resistance.
(6) Polyester resins: improve impact tannin resistance.
(7) Urea-formaldehyde melamine resin: increase chemical resistance and strength.
(8) furfural resin: improve static bending performance, improve acid resistance.
(9) Vinyl resin: improve peel resistance and impact strength.
(10) Isocyanate: reduce moisture permeability and increase water resistance.
(11) Silicone resin: improve heat resistance.
Company Profile
Shandong Zhongjiuyuan Chemical Products Co. , Ltd. .Since its establishment, to pursue quality, integrity service as its own responsibility, and constantly enhance technical strength, improve management level. After years of efforts, the company has developed into a cross-regional diversification of the comprehensive enterprise. Located in Jinan, Shandong province, China's largest chemical production and distribution center, Shandong Zhongjiuyuan Chemical Products Co. , Ltd. is a production, processing and sales-oriented Chemical Co. , Ltd. . From Company to 2023, the company has transformed itself into a high-paying technology company engaged in the transformation of scientific research achievements. The company adopts juyou independent only product technology to produce, using green technology to produce products, the company hopes through technological innovation, management innovation, Mechanism Innovation, warehousing logistics innovation, to create the influence of domestic chemical enterprises. The company not only enjoys a high reputation at home, but also exports directly to more than 30 countries and regions in the Middle East, South , Northeast Asia and Southeast Asia, it is a key export enterprise in the region that has always insisted on developing by relying on science and technology to seek progress. It has, has a complete project r & D team, and has strong ability to tackle key technical problems. People with bachelor's degree or above account for 60% of the population, management personnel are not focused on bachelor's degree or above, with the leading edge of technology for the development of the company to provide strong support, the company advocates"Everyone is a manager" model of development, truly realized the employee from“The laborer” to“The manager” to“The boss's role transformation”
The company has benzyl alcohol, propionic acid, dimethylamine, dimethylamine aqueous solution, dimethylsiloxane mixed ring, Dimethylformamide, dichloromethane, cyclohexanone, epsilon-caprolactam acid, formic acid, nylon 6 tablets, Polyamide perfluoroethylene propylene, polycarbonate resin, benzyl chloride, formic acid, n-butanol, oxolane, triethylamine, DMF, octanol, cycloethane, tetrachloroethene, dichloromethane, chloroform, dimethyl dichlorosilane, methyltrichlorosilane, triethylamine, n-propyl alcohol, propionic acid, isopropyl acetate, chlorinated paraffin, chlorosulfonic acid, trimethylamine, trimethylmonochlorosilane, chloroform, triethylamine, hydrogen peroxide, tetrachloroethene, octanol, monomethylamine, monomethylamine aqueous solution, chloromethane, isobutyraldehyde, n-butyraldehyde, n-butanol, acetone, methacrylic acid, methyl methacrylate, methacrolein, methylallyl alcohol, hydroxyethyl methacrylate, hydroxypropyl methacrylate, isopropyl alcohol, hydroxyethyl acrylate, hydroxypropyl acrylate, salt, fluorosilicon chemicals, basic chemicals, new chemical materials, etc. . The company always adhere to the market-oriented, customer-centric, quality as the lifeblood of the enterprise, to integrity as the foundation of corporate governance. The industry has established a variety of service systems, the formation of North China, South China and even the national sales network. With good reputation, high-quality products, strong strength, low prices of the country's more than 30 provinces, cities, autonomous regions, municipalities directly under the city, products by users trust. The company has a first-class marketing service system, strong warehousing and transportation capacity and supporting the supply and marketing capacity, and gradually make it an important channel for marketing. The company always adhere to the quality of credibility, innovation and development, efforts to provide world-class products and first-class service.
Company Culture
The company follows the management policy of "customer first, integrity-based", with reasonable price and good reputation, it wholeheartedly provides comprehensive and effective services for friends from all walks of life. We always adhere to the business strategy of "mutual benefit, small profits and high sales", improve the sales service system, constantly send innovative and excellent products to customers, and create a mutually beneficial cooperation platform with customers!
"Integrity, truth-seeking, hard work and hard work" is the company's corporate spirit, which is also the company's commitment to every customer: now , credit Tong has embarked on its high-speed development pace and is committed to better service.
Business tenet: to survive by quality, to develop by science and technology, to benefit by management, to market by integrity.
Company mission: quality comes from creating the world conscientiously
Core values: the pursuit of higher quality , never-ending . Continuously improve product quality and always meet customer needs
Service
1. Purity, Package, Mark, thiry party test (SGS,BV,Intertek,CIQ)
2. Sample order are acceptable
3. reply you for your inquiry asap within 12 hours
4. Cargoes photo before and after loading into container will be sent to you by email
5. Guaranteed delivery time
6. Full experience in this field
7. Good cooperation with cargo agents and shipping companies
8. professional sales and engineers will solve the problem you concern
FAQ
Q: Are you a factory or trading company?
A: Yes,we are factory, but not only factory, we also have sales team, own designers, own showroom, can help buyers to decide which products are their suitable choice, and all your inquiry will be replyed within 24 hours.
Q: Could you send me all your catalogues and price list?
A: As we have more than thousands of items, even 1 item have different size and package, it is really hard to send you all our catalogue and price list for you. Please inform me the items, size and packages you are interested in, so we can offer you the price list you need for your reference .
Q: Can I get some samples for testing?
A: we are honored to provide samples, the shipping cost should be paid by customers at first. And it will be returned to you in our first time cooperation.
Q; How does your factory do regarding quality control?
A: Our factory has passed ISO9001 2008, REACH, FAMIQS Certificate.
Q: What's your Delivery Time?
A: In generally, the delivery time is 5 days-15 days after receiving payment. For large quantity it will be checked with
production dept. We will make the delivery as soon as possible with the guaranted quality.
Q: What is payment terms?
A: L/C, T/T, Western Union are all accepted, and if you have better idea, please feel free to share with us.
Q: Which documents can you supply?
A: We usually provide our customers with Commercial Invoice, Price List, Packing List, COA, Origin Certificate, Quality/Quantity Certificate, Beneficary's Certificate, MSDS, B/L and others as your request.
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