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Environmental-friendly recyclable novel BMC (Bulk Molding Compound) SMC (Sheet Molding Compound) and application thereof for making exterior walls

A technology of bulk molding compound and sheet molding compound, which is applied in the field of new bulk molding compound BMC and/or sheet molding compound to make exterior walls, which can solve the problem of cost reduction and the inability of BMC and SMC to be used for exterior wall panels, etc. question

Inactive Publication Date: 2017-12-22
SHANGHAI HUDA INVESTMENT & DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that conventional BMC and SMC cannot be used for exterior wall panels, through the modification of BMC and SMC, and the complementarity of the combined performance of BMC and SMC, the material can reach the technical standards for the use of exterior wall panels, and the cost It is greatly reduced, and the surface decoration is strong, which meets the requirements of exterior wall panels

Method used

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  • Environmental-friendly recyclable novel BMC (Bulk Molding Compound) SMC (Sheet Molding Compound) and application thereof for making exterior walls
  • Environmental-friendly recyclable novel BMC (Bulk Molding Compound) SMC (Sheet Molding Compound) and application thereof for making exterior walls
  • Environmental-friendly recyclable novel BMC (Bulk Molding Compound) SMC (Sheet Molding Compound) and application thereof for making exterior walls

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Use commercially available BMC materials to process exterior wall panels: add 5 parts of magnesium sulfate whiskers (average aspect ratio is 15:1) and 5 parts of flame retardant to 85 parts of BMC, and then knead at room temperature. 1.88g.cm -3 , the heat distortion temperature exceeds 200°C, the bending strength is 100MPa, and the impact strength is 20KJ.M -2 , the tensile strength is 25MPa, the artificial weathering resistance exceeds 4000h, the flame retardant performance reaches V-0 level, and meets the material standards for exterior walls (see Table 1), such as surface smoothness, wind resistance performance, etc. The above-mentioned mixture suitable for the use of the exterior wall panels is molded to prepare the exterior wall panels.

[0021] Table 1: Material Standards for Exterior Walls

[0022]

Embodiment 2

[0024] Use commercially available SMC materials to process exterior wall panels: evenly sprinkle 9 parts of wollastonite fibers and 9 parts of flame retardant polyphosphazene nanoparticles on the surface of 82 parts of SMC, and then heat and press. The resulting mixture is tested and has a density of 1.85g.cm -3 , the heat distortion temperature exceeds 200°C, the bending strength is 120MPa, and the impact strength is 25KJ.M -2 , the tensile strength is 30MPa, the artificial weathering resistance exceeds 4000h, the flame retardant performance reaches V-0 level, and meets the material standards for exterior walls (see Table 1). The above-mentioned mixture suitable for the use of the exterior wall panels is molded to prepare the exterior wall panels.

Embodiment 3

[0026] The BMC and SMC materials modified by the above-mentioned examples 1 and 2 are used to process the exterior wall panels: the ratio is 50:50, and the density of the mixture is 1.88g.cm after testing. -3 , the heat distortion temperature exceeds 200°C, the bending strength is 115MPa, and the impact strength is 25KJ.M -2 , the tensile strength is 25MPa, the artificial weathering resistance exceeds 4000h, the flame retardant performance reaches V-0 level, and meets the material standards for exterior walls (see Table 1). The above-mentioned mixture suitable for the use of the exterior wall panels is molded to prepare the exterior wall panels.

[0027] In some preferred embodiments, 0.1-1% of antioxidant is added to the conventional BMC and SMC during the processing of the exterior wallboard, calculated by weight percentage of the conventional BMC and SMC.

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Abstract

The invention discloses environmental-friendly recyclable novel BMC (Bulk Molding Compound) SMC (Sheet Molding Compound) and application thereof for making exterior walls. The BMC or the SMC or a combination thereof has the density of 1.85-1.90g.cm<-3>, the heat deflection temperature exceeds 200 DEG C, the bending strength is 100-125MPa, the impact strength is 20-30KJ.M<-2>, the tensile strength is 25-35MPa, the artificial weathering aging resistance exceeds 4000hours, the flame retardant property reaches V-0 level, the weather resistance accords with the standard JG / T 396-2012, the freezing and thawing performance reaches the bending strength of more than or equal to 30 MPa and accords with the JG / T 463-2014; and the adhesive force of the coating is more than or equal to 3MPa and accords with the standard GB / T 5210-2006.

Description

technical field [0001] The invention relates to a building material, in particular to an environmentally friendly and reusable new bulk molding compound BMC and / or sheet molding compound SMC and its use for making exterior walls. Background technique [0002] Bulk Molding Compound (Bulk Molding Compound) is hereinafter referred to as BMC; and Sheet Molding Compound (Sheet Molding Compound) is hereinafter referred to as SMC. BMC and SMC are intermediate materials for molding or injection of glass fiber reinforced thermosetting products in a semi-dry process, pre-mixed by unsaturated polyester resin, low shrinkage / low profile additives, initiators, internal mold release agents, mineral fillers, etc. Make a paste, then add thickeners, colorants, etc., and glass fibers of different lengths, stir in a special kettle for thickening, and finally form a doughy intermediate material, or by casting Add glass fiber, heat up and dry to form a sheet-like intermediate material, which can...

Claims

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Application Information

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IPC IPC(8): C08L67/06C08L85/02C08K13/04C08K7/08C08K7/10C08K3/34
CPCC08K2201/014C08K2201/016C08L67/06C08L2201/02C08L2205/025C08L2205/035C08L2205/16C08L2207/20C08L85/02C08K13/04C08K7/08C08K7/10C08K3/34
Inventor 池立群
Owner SHANGHAI HUDA INVESTMENT & DEV