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The smc molding process of building inner and outer corner formwork

A technology of molding and corner formwork, applied in the field of manufacturing process of inner and outer corner formwork of buildings, can solve the problems of single material and no significant improvement in performance, and achieve the effects of simple splicing, improved service life and high efficiency

Active Publication Date: 2016-05-25
FUJIAN HAIYUAN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current plastic building formwork uses a relatively single material, basically pure plastic, and adopts injection molding technology, and its performance is not significantly improved compared with bamboo and wood formwork.
[0003] In addition, the current SMC (abbreviation for Sheet molding compound, that is, sheet molding compound) molding technology is mainly used in car windshields, inner door trim panels and structural parts that replace metal. There is no application of SMC molded building formwork.

Method used

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  • The smc molding process of building inner and outer corner formwork
  • The smc molding process of building inner and outer corner formwork
  • The smc molding process of building inner and outer corner formwork

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0031] Such as figure 2 As shown, the size of the molded inner corner formwork of the present embodiment 1-3 is 100mm×600mm×100mm, and the size of the inner corner formwork mold is 102mm×603mm×102mm. Then the cutting size of the SMC material in step 10 is: length 550-600mm, width 90-100mm; weight 1.05-1.23kg.

[0032] Available in 3 SMC materials:

[0033] A. The parameters of the SMC material are as follows: oriented glass fiber contains 30% of the total mass of the SMC material, the molding temperature of the SMC material is 135-150°C, the molding pressure is 80-100bar, and the density is 1.9g / cm 3 , Shrinkage = 0.15%, shrinkage 0 after molding, linear expansion coefficient 1.2×10 -6 / k, heat distortion temperature > 200°C, glass transition temperature 170°C, long-term use temperature 165°C, Young's modulus 12GPa, tensile strength 98MPa, flexural strength 220MPa, flexural modulus 12GPa, impact strength 75KJ / m 2 , oxygen index 27%, water absorption <0.5.

[0034] B. The ...

Embodiment 4-6

[0040] Such as image 3 As shown, the size of the molded outer corner formwork of Example 4-6 is 80mm×600mm×80mm, and the size of the outer corner formwork mold is 82mm×603mm×82mm. Then the cutting size of the SMC material in step 10 is: length 550-600mm, width 90-100mm; weight 1.05-1.23kg.

[0041] The following table is the parameters with differences in Examples 4-5.

[0042]

[0043] It can be seen that the performance of the inner corner formwork prepared by the above-mentioned Examples 4-6 is greatly improved, and the service life is long, which is beneficial to repeated use.

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Abstract

The invention provides an SMC compression molding process for interior and exterior corner templates of a building. The process comprises the following steps: cutting an SMC material into sheets with certain sizes and weight according to the sizes of interior and exterior corner templates; feeding the cut SMC material into interior and exterior corner template dies according to feeding requirements; carrying out compression molding on the SMC material in the interior and exterior corner template dies at certain pressure and temperature; and carrying out die-opening to take out prepared interior and exterior corner templates. The process provided by the invention can improve apparent quality and mechanical properties of the prepared interior and exterior corner templates; and the prepared interior and exterior corner templates have the advantages of repeated usability, light weight, aging resistance, simple splicing of templates, high efficiency and low cost for single usage.

Description

【Technical field】 [0001] The invention relates to a manufacturing process of building interior and exterior corner templates. 【Background technique】 [0002] The bamboo, wood or steel formwork used in the early days was almost eliminated due to the damage to the environment, excessive weight or corrosion resistance. The existing building formwork is more common with plastic building formwork. However, the materials used in the current plastic building templates are relatively single, basically pure plastic, and the injection molding process is adopted, and the performance is not significantly improved compared with bamboo and wood templates. [0003] In addition, the current SMC (abbreviation for Sheet molding compound, that is, sheet molding compound) molding process is mainly used in car windshields, inner door trim panels and structural parts that replace metal. There is no application of SMC molded building formwork. 【Content of invention】 [0004] The technical probl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C43/02
Inventor 王永刚吴冬生陈智明蔡秋红
Owner FUJIAN HAIYUAN NEW MATERIAL TECH
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