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High-transverse-strength pultrusion structural sheet material and manufacturing method thereof

A technology of structural plates and manufacturing methods, which is applied in the field preparation of building components, building structures, formwork/formwork components, etc., can solve the problems of uneven cement surface, easy corrosion of steel, and collision deformation of steel formwork, etc., to achieve Convenient secondary processing, high longitudinal strength, and convenient construction

Active Publication Date: 2014-02-19
上海事升新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although steel formwork can meet the needs of construction, due to the good affinity between steel and cement and the fact that steel is easy to corrode, it is difficult to demould steel formwork after construction, and it is often necessary to coat a layer of release agent before use. In addition, the release agent is often very easy to contaminate the steel bars and the surface of the building, or cause quality accidents or bring difficulties to the next building construction. The steel formwork is easily deformed by collision during use, making the poured cement The surface is very uneven and often needs to be leveled again with cement

Method used

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  • High-transverse-strength pultrusion structural sheet material and manufacturing method thereof
  • High-transverse-strength pultrusion structural sheet material and manufacturing method thereof
  • High-transverse-strength pultrusion structural sheet material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The process of making a structural plate with a width of 900 mm and a thickness of 5 mm with an alkali-free glass fiber roving reinforced unsaturated polyester resin system further illustrates the present invention. The resin system formula and reinforcing material details are shown in the following table:

[0049] Table 1 Resin system formula and detailed information

[0050]

[0051] Table 2 Reinforcement material details

[0052]

[0053] Remarks: The higher the mass fraction of the reinforcing material, the higher the mechanical properties of the product. Generally, the mass fraction of reinforcing materials in composite products produced by pultrusion is 50-70%. In this embodiment, a product with a mass fraction of 60% of the reinforcing material is obtained, and at the same time, the product has a relatively high transverse strength. The reinforcing material is composed of two layers of composite felt and one layer of woven felt, wherein the composite felt ...

Embodiment 2

[0063] The process of making a structural plate with a width of 600 mm and a thickness of 1.6 mm with an alkali-free glass fiber roving reinforced vinyl resin system further illustrates the present invention. In the resin system formula, the resin type is changed to vinyl resin, and the rest are the same as in Example 1. The details of the reinforcement materials are listed in Table 3.

[0064] Table 3 Reinforcement material details

[0065]

[0066] Remarks: In this example, a product with a mass fraction of 60% of the reinforcing material is prepared, and at the same time the product has a relatively high transverse strength. The reinforcing material is composed of two layers of composite felt, one layer of composite felt on the upper and lower surfaces of the product, and the others 2400tex non-alkali glass fiber roving, the estimation method of non-alkali glass fiber roving is as follows: product mass per meter ω=ρV, according to experience product density is 1.8g / cm 3...

Embodiment 3

[0074] The process of making a structural plate with a width of 600 mm and a thickness of 1.6 mm with an alkali-free glass fiber roving reinforced phenolic resin system further illustrates the present invention. The resin system formula and detailed information are shown in Table 4. The detailed information of the reinforcing material is the same as Table 3 in Example 2.

[0075] Table 4 Resin system formula and detailed information

[0076]

[0077] Specific steps are as follows:

[0078] (1) Production preparation: First, the lower layer of composite felt passes through the yarn guide frame, preformed mold, and mold in turn, and after being pulled out to a certain length, the upper layer of composite felt is cut into sharp corners and stitched smoothly to the passed composite felt with a needle thread , under the traction of the composite felt, the upper composite felt passes through the mold. The two-layer felt is pulled out of the mold for a certain distance and then ...

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Abstract

The invention relates to a high-transverse-strength pultrusion structural sheet material and a manufacturing method thereof. The manufacturing method comprises that: alkali-free glass fiber roving, knitting felt and composite felt are drawn out from a creel and a felt shaft, and successively pass a yarn-guiding rack, a gum dipping tank, a pre-forming die apparatus; and glass fiber yarn and glass fiber felt subjected to infiltration and pre-forming enter a structural sheet material pultrusion die heated to a preset temperature, and sheet materials subjected to solidification forming are subjected to traction by a traction mechanism, fixed-length cutting and the like for being processed into a structural sheet material product with relatively large size and with a same shape as the die shape. The product is relatively high in transverse strength, light and high in strength, and can be subjected to secondary processing such as cutting, boring and the like. Additionally, concave-convex bayonets are arranged at the two sides of the sheet material, and the sheet material is widely applicable to buildings such as large-area building templates, wall plates, roof boards, furniture plates, decorative plates and the like, and also is applicable to other industries such as energy field and transportation field.

Description

technical field [0001] The invention belongs to the technical field of fiber-reinforced composite material production, and in particular relates to a high transverse strength pultrusion structural board and a manufacturing method thereof. Background technique [0002] Traditional construction and other fields use structural panels, such as building formwork, which are made of wood, steel and other materials. Due to the fact that wood is easy to absorb water and rot, and the lack of wood resources and people's protection of forests have gradually withdrawn from wood formwork. Although steel formwork can meet the needs of construction, due to the good affinity between steel and cement and the fact that steel is easy to corrode, it is difficult to demould steel formwork after construction, and it is often necessary to coat a layer of release agent before use. In addition, the release agent is often very easy to contaminate the steel bars and the surface of the building, or caus...

Claims

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Application Information

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IPC IPC(8): C08L67/06C08L101/02C08L61/06C08K9/06C08K7/14C08K3/26C08K3/22C08K5/098B29C70/52E04G9/05
Inventor 王志涛王占东吴超李兰杰
Owner 上海事升新材料有限公司
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