Calcium carbonate enhanced PVC composite board and processing method thereof

A technology of calcium carbonate and composite boards, which is applied in the field of composite boards, can solve the problems of poor adhesion between the matrix and the filler interface, and low mechanical strength of composite materials, and achieve the effects of improving compatibility, not easily deformed, and good flame retardancy

Inactive Publication Date: 2018-11-23
贺州钟山县双文碳酸钙新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current method for modifying calcium carbonate, the main surface treatment agent is usually fatty acid or its salt. Although the dispersion and processing fluidity of the system have been improved, it is difficult to effectively combine PVC resin with calcium carbonate filler, resulting in The interface bonding force between the matrix and the filler is poor, resulting in low mechanical strength of the composite material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A calcium carbonate reinforced PVC composite board, comprising the following raw materials in parts by weight: 100 parts of PVC resin, 15 parts of calcium lignosulfonate, 70 parts of wood flour, 50 parts of modified calcium carbonate, 4 parts of aramid fiber, sea foam 3 parts of stone fiber, 2.5 parts of polyether modified polydimethylsiloxane, 3 parts of polyoxyethylene glyceryl ether monostearate, 2 parts of composite foaming agent, 3.5 parts of titanate coupling agent, stabilizer 1.5 parts, 3 parts of lubricant, 1 part of 1010 antioxidant and 4 parts of processing aid.

[0035] Described modified calcium carbonate is modified through the following steps:

[0036] (1) Put the limestone into the crusher for crushing, and crush to a particle size ≥ 16 mesh mm to obtain coarse calcium carbonate powder;

[0037] (2) Add calcium carbonate coarse powder into the grinder, and then add a surface treatment agent composed of castor oil maleate and polyoxypropylene polyoxyethyl...

Embodiment 2

[0046] A calcium carbonate reinforced PVC composite board, comprising the following raw materials in parts by weight: 100 parts of PVC resin, 20 parts of calcium lignosulfonate, 50 parts of wood powder, 45 parts of modified calcium carbonate, 5 parts of aramid fiber, sea foam 4 parts of stone fiber, 1.5 parts of polyether modified polydimethylsiloxane, 2 parts of polyoxyethylene glyceryl ether monostearate, 2.5 parts of composite foaming agent, 2 parts of polyetherimide coupling agent, 2 parts of stabilizer, 2.5 parts of lubricant, 1.5 parts of 1076 antioxidant and 3 parts of processing aid.

[0047] Described modified calcium carbonate is modified through the following steps:

[0048] (1) Put the limestone into the crusher for crushing, and crush to a particle size ≥ 16 mesh mm to obtain coarse calcium carbonate powder;

[0049] (2) Add calcium carbonate coarse powder into the grinder, and then add a surface treatment agent composed of castor oil maleate and polyoxypropylene...

Embodiment 3

[0058] A calcium carbonate reinforced PVC composite board, comprising the following raw materials in parts by weight: 100 parts of PVC resin, 10 parts of calcium lignosulfonate, 70 parts of wood flour, 60 parts of modified calcium carbonate, 3 parts of aramid fiber, sea foam 5 parts of stone fiber, 3 parts of polyether modified polydimethylsiloxane, 4 parts of polyoxyethylene glyceryl ether monostearate, 1.5 parts of composite foaming agent, 4 parts of titanate coupling agent, stabilizer 1.5 parts, 3.5 parts of lubricant, 2 parts of 1010 antioxidant and 4 parts of processing aid.

[0059] Described modified calcium carbonate is modified through the following steps:

[0060] (1) Put the limestone into the crusher for crushing, and crush to a particle size ≥ 16 mesh mm to obtain coarse calcium carbonate powder;

[0061] (2) Add calcium carbonate coarse powder into the grinder, and then add a surface treatment agent composed of castor oil maleate and polyoxypropylene polyoxyethy...

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Abstract

The invention discloses a calcium carbonate enhanced PVC composite board and a processing method thereof. The composite board comprises the following raw materials in parts by weight: 100 parts of PVCresin, 10-20 parts of calcium lignosulphonate, 40-80 parts of wood flour, 40-60 parts of modified calcium carbonate, 3-5 parts of aramid fiber, 3-5 parts of sepiolite fiber, 1-3 parts of polyether modified polydimethylsiloxane, 2-4 parts of polyoxyethylene glycerol ether monostearate, 1-3 parts of composite foaming agent, 2-4 parts of coupling agent, 1-2 parts of stabilizing agent, 2-4 parts of lubricating agent, 1-2 parts of antioxidant and 3-5 parts of processing agent. The modified calcium carbonate adopted by the invention is subjected to surface modification with ceraphyl RMT and polyoxypropylene polyoxyethylene propylene glycol ether and then is subjected to secondary surface modification with aminopropyl Poly(methylsilsesquioxane) and phytic acid. The PVC composite board prepared by the invention has the advantages of high strength, high toughness, high impact resistance, excellent fire resistance, wear resistance, heat resistance, difficulty in deformation, high stability, andthe like, and can be widely applied to the construction fields of wood floors, ceilings, wallboards, and the like.

Description

technical field [0001] The invention relates to the technical field of composite boards, in particular to a calcium carbonate reinforced PVC composite board and a processing method thereof. Background technique [0002] PVC wood-plastic composite board is a kind of composite material made of raw materials such as wood powder, bamboo powder, crop straw powder and PVC resin, which are mixed and processed at high temperature. PVC composite board has the advantages of water resistance, corrosion resistance, fire prevention, mildew resistance, no moth, no pollution, convenient processing, etc. It is widely used in indoor doors, baseboards, overall cabinets, wardrobes, external wall hanging panels, ceiling , decorative wall panels, outdoor floors, guardrail columns, plastic-steel gazebos, garden guardrails, balcony guardrails, garden fences, leisure benches, tree pools, flower stands, flower box air-conditioning racks, air-conditioning shields, shutters, road signs, transport pall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L83/12C08L97/00C08K13/06C08K3/26C08K7/10C08J9/08
CPCC08J9/08C08J2203/18C08K2003/265C08L27/06C08L2201/02C08L2201/08C08L97/005C08L83/12C08K13/06C08K3/26C08K7/10
Inventor 唐文易双
Owner 贺州钟山县双文碳酸钙新材料有限公司
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