PVC co-extrusion exterior wall cladding and preparation method thereof

A technology of PVC resin and hanging board, applied in the field of plastic processing, which can solve the problems of insufficient thermal stability, easy decomposition, poor thermal stability of PVC molecules, etc.

Inactive Publication Date: 2020-05-08
青岛泰合洋房建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The existing PVC co-extrusion foam board adds plant fiber powder to the raw material, and the PVC foam board obtained has the lightness and toughness of fiber, and has good weather resistance, high strength, no water absorption, no cracking, and long life. , good apparent quality, etc., but because the PVC resin molecular chain contains unstable groups such as allyl chloride, tertiary chlorine, and secondary chlorine, the thermal stability

Method used

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  • PVC co-extrusion exterior wall cladding and preparation method thereof
  • PVC co-extrusion exterior wall cladding and preparation method thereof
  • PVC co-extrusion exterior wall cladding and preparation method thereof

Examples

Experimental program
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preparation example 1-3

[0043] In Preparation Examples 1-3, the polyurethane was selected from the polyurethane with the product number 141B sold by Shandong Gonghengderui Polyurethane Co., Ltd., and the tung oil was selected from the 009 tung oil sold by Jinan Xinsenyuan Chemical Co., Ltd.

preparation example 1

[0044] Preparation Example 1: (1) Place sodium-based montmorillonite in a sulfuric acid solution with a concentration of 0.6g / L, stir at 80°C for 3 hours at high speed, filter while hot, and wash twice with sulfuric acid with a mass concentration of 2%, Then wash with distilled water to neutrality, suction filter, dry, grind, and pass through a 300-mesh sieve to obtain pretreated montmorillonite powder, the mass ratio of sodium-based montmorillonite and sulfuric acid solution is 1:3;

[0045] (2) Put 2.5kg of pretreated montmorillonite powder in 5kg of ethanol solution with a mass concentration of 50%, ultrasonically disperse at 50°C for 3h, add 0.25kg of KH-570 silane coupling agent, keep warm and stir for 2h, add 1.2kg methyl methacrylate, 0.5kg trimethylphenylphosphorus iodide, 0.3kg tung oil and 1.2kg polyurethane, keep stirring for 3 hours, add 0.1kg of azobisisobutyronitrile after 0.3h of nitrogen gas, and keep warm for reaction After 5 hours, filter with suction, dry, g...

preparation example 2

[0046] Preparation example 2: (1) Put the sodium montmorillonite in a sulfuric acid solution with a concentration of 0.7g / L, stir at a high speed for 2.5h at 85°C, filter while it is hot, and wash twice with sulfuric acid with a mass concentration of 2%. , and then washed with distilled water to neutrality, suction filtration, drying, grinding, and passing through a 300-mesh sieve to obtain pretreated montmorillonite powder, the mass ratio of sodium-based montmorillonite and sulfuric acid solution is 1:4;

[0047](2) Place 3kg of pretreated montmorillonite powder in 6kg of 50% ethanol solution, ultrasonically disperse at 55°C for 2.5h, add 0.3kg of KH-570 silane coupling agent, insulate and stir for 2.5h, Add 1.4kg of methyl methacrylate, 0.6kg of trimethylphenyl phosphorus iodide, 0.4kg of tung oil and 1.4kg of polyurethane, keep stirring for 3.5h, and feed nitrogen for 0.4h, then add 0.2kg of azobisisobutyronitrile, Insulated for 5 hours, suction filtered, dried, ground, and...

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Abstract

The invention discloses a PVC co-extrusion exterior wall cladding and a preparation method thereof. The PVC co-extrusion exterior wall cladding comprises a PVC foaming layer, wherein the PVC foaming layer comprises the following components in parts by weight: 30-40 parts of PVC resin, 23.5-33.5 parts of modified montmorillonite, 15-23 parts of modified magnesium-aluminum hydrotalcite, 30-40 partsof calcium carbonate, 1.4-1.8 parts of a compound stabilizer, 1.5-1.9 parts of a plasticizer, 1.5-1.9 parts of a foaming regulator, 0.3-0.7 part of a coupling agent, 0.25 to 0.45 part of a foaming agent, 0.3 to 0.7 part of stearic acid, 0.2 to 0.4 part of polyethylene wax and 0.1 to 0.3 part of paraffin; the composite stabilizer comprises the following components: lead sulfate tribasic, methyltinmercaptide, phosphite ester, rare earth malate and an arylamine antioxidant. The PVC co-extrusion exterior wall cladding has the advantages of good thermal stability, adsorption and degradation of automobile exhaust, sound absorption and noise reduction, antistatic and dust adsorption.

Description

technical field [0001] The invention relates to the technical field of plastic processing, and more specifically relates to a PVC co-extruded exterior wall hanging board and a preparation method thereof. Background technique [0002] Boards are widely used in the construction and decoration industry, and are often called building boards, wood boards, furniture boards, engineering boards, wood boards, etc. According to the classification of materials, the boards can be divided into two categories: solid wood boards and wood-based boards. In the past, wooden boards were used in large quantities. With the reduction of forest resources and the enhancement of environmental protection awareness, replacing wood with plastic has become the development direction of boards in our country. [0003] PVC exterior wall hanging board is a plastic profile with rigid polyvinyl chloride as the main body. It is the best alternative material for exterior wall coatings and ceramic tiles. It is ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/06C08K9/02C08K3/34C08K9/08C08K9/06C08K3/22C08K3/26C08K3/30C08K5/58C08K5/524C08K5/098C08K5/18C08J9/10C09D163/00C09D123/08C09D7/61C09D7/62B29D7/01E04F13/075
CPCB29D7/01C08J9/0023C08J9/0028C08J9/0038C08J9/0052C08J9/0066C08J9/009C08J9/0095C08J9/103C08J2203/04C08J2327/06C08K2003/2227C08K2003/2241C08K2201/011C09D7/61C09D7/62C09D7/70C09D123/0853C09D163/00E04F13/0875C08L23/0853C08K3/346C08K7/06C08K3/22C08K7/26C08K3/36C08K3/042C08K3/041C08L63/00
Inventor 王延兴
Owner 青岛泰合洋房建设有限公司
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