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01 2021/04

Mechanical properties and structure of polyurethane elastomer

Mechanical property The structure and length of soft segment and hard segment in polyurethane elastomer, and the force between soft segment and hard segment directly affect the mechanical properties of elastomer. In addition, whether microphase separation can occur, the degree of microphase separation and the uniformity of hard segment distribution in soft segment are also important factors affecting the mechanical properties of polyurethane elastomer. Effect of soft segment on mechanical prop

30 2021/03

Matching relationship between polyurethane elastomer products and molding processing methods

Abstract According to the general principle of molding process selection, the micro-phase separation of polyurethane elastomer can be realized to meet the requirements of excellent product performance. Referring to the influencing factors such as extrudability, moldability, ductility and spinnability, the molding process is carried out according to the following principles: four basic types of polyurethane rubber, polyurethane pouring rubber, polyurethane water emulsion and polyurethane the

23 2021/03

Formula, raw materials, process and manufacturing technology of polyurethane plate

1. Types of polyurethane plates In terms of building board, polyurethane board can be divided into ordinary polyurethane board and composite polyurethane board according to the product condition; According to the foaming process, it can be divided into continuous plate and intermittent plate. Intermittent sheet requires that the foaming material should fill the thin large-volume mold cavity in a short time, and that the foaming system should have excellent activity, good density distribution a

18 2021/03

Polyurethane composite: With the development of technology, it has entered more terminal applications.

The development of composite industry is changing with each passing day. Polyurethane resin has the advantages of good toughness, fast curing, environmental protection and no volatilization. In the past, it was dominated by unsaturated resin and epoxy resin for a long time. Is gradually being replaced ... Advantages and disadvantages of resins commonly used in composite materials

08 2021/03

Advantages and disadvantages of cast polyurethane elastomer

Pouring polyurethane elastomer, called liquid rubber, is a product produced by pouring liquid reaction mixture into the mold cavity, which is the most widely used and the largest output among polyurethane elastomers. Main advantages of cast polyurethane elastomer The adjustable range of performance is large Many physical and mechanical performance indexes can be changed in a certain range through the selection of raw materials and the adjustment of formula, so as to meet the different

02 2021/03

Polyurethane Foaming Technology and Performance Mechanism of polyurethane foaming machine

catalyst, flame retardant and other additives. Polyurethane foam is divided into soft foam and hard foam: soft foam is open-cell structure and hard foam is closed-cell structure. Rigid polyurethane is also widely used in thermal insulation walls in northern China, and we are old friends. The open-cell structure of polyurethane soft foam is sound-absorbing and breathable, and can also wash dishes. Polyurethane soft foam can be divided into two types: skinning and non-skinning, but their m

26 2021/02

New technology and application of polyurethane materials and polyurethane products

Polyurethane materials [that is, high molecular polymers containing carbamate groups and -NHCOO in the main chain of macromolecules] have developed rapidly since industrial production was not put on the market in the 1950s. Compared with polymer rubber materials, it has its own unique characteristics. It can be used to produce polyurethane products with different properties and properties by different numbers of functional groups and different types of functional groups and different production

04 2021/01

What are the reasons why polyurethane foam is easy to shrink?

As the main auxiliary agent for polyurethane foaming, color paste is widely used in various polyurethane materials. As a professional polyurethane color paste manufacturer in East China, the color paste produced by our factory has the characteristics of high color concentration, good fluidity, bright color and strong weather resistance without affecting foaming when added in large quantities. ...... 　 When using polyurethane foam rubber, it is possible to encounter various difficulties and a

15 2020/12

Main characteristics of polyurethane elastomer

01 2020/12

Foaming process of polyurethane rigid foam

As the main auxiliary agent for polyurethane foaming, color paste is widely used in various polyurethane materials. As a professional polyurethane color paste manufacturer in East China, the color paste produced by our factory has the characteristics of high color concentration, good fluidity, bright color and strong weather resistance without affecting foaming when added in large quantities. ...... Polyurethane rigid foam is generally foamed at room temperature, and the molding process is