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Production Technology of Thermoplastic Composite Building Formwork

Release Date:2026-01-13 Page Views:257
Production Technology of Thermoplastic Composite Building Formwork

The production technology of thermoplastic composite building formwork ensures that the concrete structure is poured according to the design requirements. It has to bear the horizontal load (lateral pressure of concrete) and vertical load (self - weight of the building formwork, material structure and construction load) during the construction process of the concrete structure.
It is used in large quantities and widely in concrete construction. According to statistics, the formwork usage in every 1m² of concrete project is as high as 4 - 5m². Its project cost accounts for 30% - 35% of the cost of cast - in - place concrete structures, and the labor cost accounts for 40% - 50%, thus playing a crucial role. In 2007, the annual output of various formworks in China exceeded 850 million square meters, making China the world's largest producer of formworks.

Plastic formwork is a new type of energy - saving and environment - friendly product. With its outstanding characteristics like high surface hardness, smooth finish, easy demoulding, abrasion resistance, easy cleaning, light weight, long service life, high specific strength, good toughness, excellent processing performance, convenient construction, recyclability, no pollution, and suitability for fair - faced concrete, it is undoubtedly the leading development trend of building formwork.
However, the "bottlenecks" of plastic formwork include relatively low strength and stiffness, poor dimensional stability, low heat resistance, and high cost.
Our company has developed a thermoplastic composite building formwork.
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Comparison of technical characteristics

Performance    Index

Project    Formwork

Plastic    Formwork

Aluminum    Alloy Formwork

Unit   Price (CNY/m²)

90-220

90-180

500-600

Reuse   Cycles

≥80

≥30

300

Cost   Per Use (CNY/m²)

≤2.0

≥3.0

2.0

Density   (g/cm³)

1.2-1.4

1.2-1.4

2.8

Flexural   Strength (MPa)

80

41

110

Elastic   Modulus (MPa)

7000

3000

70000

Coefficient   of Thermal Expansion (m/K)

1.3×10⁻⁵

3.2×10⁻⁴

2.3×10⁻⁵

Flame   Retardancy

Flame-retardant

Non-flame-retardant

Flame-retardant

Corrosion   Resistance

Excellent

Excellent

Alkali-resistant   (Poor)

Demolding   Process

Easy

Easy

Difficult

Demolding   Agent

Not   required

Not   required

Required

Customizable   Size

Available

Available

Not   available

Recyclability

Recyclable

Recyclable

Recyclable

Performance   After Water Absorption

No   deformation

No   deformation

Sensitive   to alkaline water

Surface   Hardness

High

High

High

Environmental   Performance

Pollution-free

Pollution-free

Slightly   polluting