XPS Extruded Board 100 Q&As - Chapter 1

Table of Contents:

1. High molecular polymer foam materials

2. The common sense of extruded board

3. The performance characteristics of the extruded board

4. Production and technology of extruded board

5. The use and construction of the extruded board

6. Other related information of extruded board

High molecular polymer foam material (10 questions)

1. What is a polymer foam material?

A gas-solid two-phase composite material composed of polymer and gas molecules. The bubbles may be the dispersed phase, the polymer may be the continuous phase, or both may be the continuous phase. The extruded board is a kind of polymer foam material.

2. Classification of polymeric foam materials?

It can be divided into high, medium, and low-density foam materials. It can also be divided into open-cell and closed-cell foam materials. It can also be divided into hard and soft foam materials. It can also be divided into physical foaming, chemical foaming or free foaming, and structural foaming foam materials. It can also be divided into thermoplastic and thermosetting foamed materials.

3. What are the forming methods of polymer foam materials?

The most important methods at this stage are extrusion, injection molding, blow molding, and rotational molding. Extrusion production efficiency is high, accounting for the largest proportion. Injection molding focuses on the production of high-density materials. Blow molding and rotational molding account for a relatively small proportion.

4. The inventor and time of various polymer materials.

The extruded board was invented by Dow Chemical in 1944.

5. What are the common building insulation materials?

The insulation material is a general term for heat preservation material and heat insulation material. Common materials are:

Inorganic insulation materials

• Asbestos and its products

• Glass wool and its products

• Inorganic bubble insulation material

• Aluminum silicate cotton and its products

• Mineral wool, rock wool and their products

• Inorganic microporous materials

Organic insulation materials

• Molded polystyrene foam (EPS)

• Extruded polystyrene foam (XPS)

• Rigid polyurethane foam

6. Which parameters of foam are related to density?

Common compression performance, bending performance, impact performance, and dynamic vibration buffer performance and their relative density follow the square law.

7. What are the advantages of open-cell foam?

Fast gas exchange; low foaming agent residue; good silencing performance; good adhesion and coating performance; enhanced liquid adsorption and desorption performance.

8. What are the disadvantages of open-cell foam?

Disadvantages of openings: lower role performance; lower mechanical properties; poor dimensional stability; poor floating performance; lower energy absorption performance.

The greater the closed-cell rate in the extruded board, the lower the water absorption and thermal conductivity of the board, and the better the heat preservation and long-term heat preservation.

9. What is the development history of polymer foaming materials?

During World War II, polymer foaming technology developed rapidly in Europe and North America. Japan began research in the 1960s, and China began research in the 1970s.

10. What is the structure of foam?

a: open-cell foam

b: closed-cell foam

c: Extrusion of foam plastic at one time, the temperature and pressure of the skin layer and the core are different, so the skin is formed.

d: Foam extruded board of other materials combined up and down

e: Add fibrous foam

f: Use hollow spherical filler to make foam

Feininger (Nanjing) Energy Saving Technology Co., Ltd (shortened as Feininger) is established in the year 2001 and covers an area of 70 acres. Feininger is the first professional manufacturer of XPS Extrusion Line and XPS Foam Board in China. At the same time we are the unique enterprise specializing in XPS Foam as well as developing, manufacturing and selling of XPS extrusion line.