Polyurethane adhesive is a kind of adhesive containing ammonia ester group (- NHCOO -) and isocyanate group (- NCO) in the molecular chain. It has strong chemical activity, and contains active hydrogen materials, Such as foam plastic, wood, leather, fabric, paper, ceramic and other porous materials and metal, glass, rubber, plastic and other smooth surface materials have excellent chemical adhesion. The cured adhesive layer has good wear resistance, water resistance, oil resistance, solvent resistance, high and low temperature resistance, chemical resistance, ozone resistance and bacteria resistance. Widely used in steel plate and honeycomb paper, wood, PVC board, rock wool, magnesium oxide board, magnesium sulfate board, perlite board and other substrate bonding and bonding between various substrates. Convenient construction, high efficiency, strong initial adhesion, irreversible after curing.
Curing principle of polyurethane adhesive
The polyurethane adhesive reacts with the moisture adsorbed on the surface of the substrate and the active hydrogen groups such as hydroxyl group on the surface to produce a stable urea bond structure -- wet curing
Sizing environment and curing time
1, the air relative humidity is 40%, room temperature curing needs 2-3.0h
2, air relative humidity of more than 40%, room temperature curing 0.5-1.0h
3, air relative humidity of about 70%, stable 60-80°C, curing time: 0.2-0.3h
1. There are strong polarity and chemical activity of isohydroxy ester base and ammonia ester base, and contain active hydrogen materials such as: foam plastic, wood, leather, fabric, paper, ceramic and other porous materials and metal, glass, rubber, plastic and other materials with smooth surface have excellent chemical bonding force. The hydrogen bond between polyurethane and the bonded material enhances the internal force of the molecule and makes the bond stronger.
2, can be cured at room temperature, heating curing. The bonding process is simple and has good operation performance.
3. After curing, there is no by-product, which is not easy to make the adhesive layer produce defects, and the quality is stable.
4 low temperature and ultra-low temperature performance is particularly good, more than all other adhesives, can be used in -196℃ - 253℃.
5. It can be baked at 220℃ for 30-60 minutes. Meet the surface treatment of bonding material.
6. Good: wear resistance, water resistance, oil resistance, solvent resistance, chemical resistance, ozone resistance and other characteristics, and has anti-mold performance.
Deyang Zhenghao New Material Technology Co., Ltd. is a professional R & D and production of polyurethane adhesive industry leader, with a number of technical personnel, to keep up with international and domestic industry technology innovation, from solvent to solvent-free adhesive technology iteration, conducive to environmental friendly.
The company relies on: Wanhua Chemical, BASF, Kostron, Huntsman and other large companies to support new materials, and constantly improve product quality.
The company's products are widely used: all kinds of building materials, furniture, cabinets and other glass magnesium board, purification board a variety of composite board bonding, with good weather resistance.
At present, the company's environmental protection adhesive construction is simple, cold molding, high efficiency, no waste, environmentally friendly, energy saving and cost-effective.
The company adhering to the "integrity, professional" business philosophy, adhere to the user first, do our best, start and finish, careful care of the whole satisfaction. Adhere to the "inside strong quality, outside tree image, quality first, standardized development" of the enterprise policy, the development of Yang "pragmatic, tenacious struggle" style of enterprise, service for the majority of enterprises. Welcome the majority of enterprises, consumers and our Deyang Zhenghao new material technology Co., LTD contact, negotiate.
Liao Jicheng
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