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Polyvinyl chloride/chlorinated polyvinyl chloride skin foamed sheet and preparation method thereof

A technology of chlorinated polyvinyl chloride and polyvinyl chloride, which is applied in the field of building decoration materials and furniture materials, and can solve the problems of difficult surface hardness, easy scratching and limited product use range of polyvinyl chloride foam boards

Inactive Publication Date: 2011-05-04
杜文军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment investment of this skin foaming method is relatively small, but the surface hardness of the produced polyvinyl chloride foamed sheet is difficult to improve, easy to scratch, and the scope of use of the product is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0007] Example 1, according to the weight ratio, select 90 parts of SG-6 polyvinyl chloride, 10 parts of chlorinated polyvinyl chloride with a degree of polymerization of 500 and a chlorine content of 67%, 2.8 parts of an organotin stabilizer, and 3 parts of an acrylic foam regulator. 1 part of superfine calcium carbonate foaming nucleating agent, 2 parts of azo foaming agent, 0.4 part of paraffin wax for external lubricant, 0.2 part of polyethylene wax, 0.4 part of calcium stearate for internal lubricant, oxidized poly 0.1 part of ethylene wax, 0.5 part of ACR201 processing aid, 0.08 part of BHT as antioxidant, and 10 parts of heavy calcium carbonate as filler. Put all the above materials into the high-speed mixer on the production line, heat to 90-120°C, mix and stir evenly, and keep warm for more than 10 minutes. Put the mixed material into the cold mixer, cool it to 25-45°C, put it into the silo, and extrude the mixed material out of the foamed sheet with a conical twin-sc...

example 2

[0008] Example 2, according to the weight ratio, select 80 parts of SG-7 polyvinyl chloride, 20 parts of chlorinated polyvinyl chloride with a degree of polymerization of 700 and a chlorine content of 67%, 5 parts of calcium zinc stabilizer, and 5 parts of acrylate foam regulator 3 parts of titanium dioxide for foaming nucleating agent, 1 part of temperature-adjusting modified azo foaming agent, 0.3 part of paraffin wax for external lubricant, 0.3 part of polyethylene wax, 0.5 part of calcium stearate for internal lubricant , 0.2 parts of oxidized polyethylene wax, 0.8 parts of ACR201 processing aid, 0.1 part of antioxidant BHT, 20 parts of light calcium carbonate as filler. All the above-mentioned materials are added into a high-speed mixer and mixed, and processed according to the process of the aforementioned example 1.

example 3

[0009] Example 3, by weight ratio, choose 70 parts of SG-6 polyvinyl chloride, 30 parts of chlorinated polyvinyl chloride of degree of polymerization 500, chlorine content 67%, 7 parts of composite lead salt stabilizers, 4 parts of foam regulators, Foaming nucleating agent aluminum powder 2 parts, azo superfine foaming agent 0.5 part, external lubricant 1 part paraffin wax, polyethylene wax 0.1 part, internal lubricant 0.3 part oxidized polyethylene wax, stearic acid 0.6 part 0.8 parts of ACR401 processing aid, 0.15 parts of 1010 antioxidant, 30 parts of activated heavy calcium carbonate and light calcium carbonate mixture as filler. Add all the above-mentioned materials into a high-speed mixer and mix evenly, and process and manufacture according to the process of the aforementioned Example 1 to make a finished foam board.

[0010] After testing, compared with the original polyvinyl chloride foamed board, the foamed board of the present invention has an impact strength of 1.5...

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Abstract

The invention relates to a polyvinyl chloride / chlorinated polyvinyl chloride skin foamed sheet and a preparation method thereof, and the polyvinyl chloride / chlorinated polyvinyl chloride skin foamed sheet comprises the following materials in parts by weight: 60-90 parts of polyvinyl chloride, 10-40 parts of chlorinated polyvinyl chloride, 2.8-7 parts of stabilizer, 3-5 parts of foam regulator, 1-3 parts of foam nucleating agent, 0.5-2 parts of foaming agent, 0.6-1.5 parts of external lubricant, 0.5-1 part of internal lubricant, 0.5-2 parts of processing aids, 0.05-0.5 part of antioxidant and no more than 30 parts of filler. The preparation method is as follows: adding all the materials into a high-speed stirring machine, and mixing uniformly; heating to 90-120 DEG C, and carrying out heat preservation for more than 10 minutes; placing into a cold mixing machine, cooling down to 25-45 DEG C, tapping into a storage bin, extruding a foaming material through an extruder, and further carrying out vacuum shaping, cooling molding and edge trimming and finishing; and finally carrying out cutting and packaging according to the required length. The product has high surface hardness and great strength, is less prone to deformation, easy for processing, reasonable in manufacturing process, low in cost, good in quality and high in efficiency and has extensive popularization value and good economic and social benefits.

Description

technical field [0001] The invention relates to building decoration materials and furniture materials, in particular to chemically foamed boards. Background technique [0002] In building decoration materials and furniture materials, the amount of plastic products is increasing. PVC foam board occupies an important position due to its advantages of light weight, anti-corrosion, non-deformation, and good thermal insulation performance. The market demand is expanding day by day. At present, the production methods of polyvinyl chloride (PVC) foamed sheets mainly include: co-extrusion foaming process, the core of which is a foam layer, and the surface layer is made of solid core material. Due to the co-extrusion processing method, two extruders are generally required. Machine, in conjunction with production, equipment investment is large, and the process is relatively complicated. In addition, it is processed and produced by crust foaming. This process is to extrude the polyvin...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L27/24C08L33/04C08J9/10C08K13/02B29C47/92B29C48/92
CPCB29C48/0022B29C48/08B29C48/875B29C48/92B29C2948/9259B29C2948/92638B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92904B29C2948/92923
Inventor 杜文军滕谋勇
Owner 杜文军
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