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Recycled polypropylene modified polrvinyl chloride sectional material and preparation method thereof

A technology for recycling polypropylene and polyvinyl chloride, which is applied in the field of polyvinyl chloride profiles and their preparation, can solve the problems that the physical properties of PVC profiles cannot be met, the mechanical properties of finished profiles are not excellent enough, and the preparation process is cumbersome. Competitiveness, realization of energy and resources, effect of improving recycling rate

Inactive Publication Date: 2011-04-20
湖南五强产业集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research results show that the compatibility of the composite materials obtained in this way has been improved to a certain extent, but the mechanical properties are poor, which cannot meet the physical performance requirements of PVC profiles.
Although some literatures mention the method of blending waste PP and other materials to prepare profiles, the formula is complex, the preparation process is cumbersome, and the mechanical properties of the finished profiles are not excellent enough. The performance and quality of the products still needs to be further improved

Method used

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  • Recycled polypropylene modified polrvinyl chloride sectional material and preparation method thereof
  • Recycled polypropylene modified polrvinyl chloride sectional material and preparation method thereof
  • Recycled polypropylene modified polrvinyl chloride sectional material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A PVC profile modified with recycled PP of the present invention, which is prepared by blending the following raw materials in parts by mass:

[0022]

[0023]

[0024] The above-mentioned preparation method of the modified PVC profile with recycled PP of the present invention specifically comprises the following steps:

[0025] (1) Mixing: Mix the raw materials PVC, stabilizer, titanium dioxide, CPE, ACR and lubricant at high speed according to the above ratio, and add cross-linked recycled PP or cross-linked recycled when the temperature rises to 80°C-95°C PP and activated calcium carbonate, heat mixed until the temperature reaches 115 ℃ ~ 125 ℃, discharge, and then start cold mixing to room temperature to obtain a dry blend;

[0026] (2) Forming: Extrude the dry blend at a temperature of 140° C. to 205° C. to prepare the PVC profile modified with recycled PP of the present invention.

[0027] In this example, by blending cross-linked recycled PP and PVC, the m...

Embodiment 2

[0030] According to the component list in Table 1, prepare raw materials for recycled PP (the melt index of recycled PP is less than 12.0g / 10min, and the solid content is less than 15%), CPE, DCP and co-crosslinking agent (styrene or divinylbenzene) , dissolve DCP in the co-crosslinking agent, then spray the solution on the recycled PP and CPE, then put it into the high-speed mixer and mix it for 5 minutes before discharging (the speed of the high-speed mixer reaches 700rpm); Extrude and granulate with a twin-screw extruder at a temperature of 120°C to 180°C to prepare three types of cross-linked recycled PP with different ratios for use.

[0031] Table 1: Different formulations of cross-linked recycled PP

[0032]

[0033] Raw material PVC (PVC-SG-5), rare earth composite stabilizer, titanium dioxide, CPE, ACR and lubricant (the lubricant selected in this embodiment is stearic acid and polyethylene wax) are listed in the following table 2. Then add it to the high-speed mi...

Embodiment 3

[0042] This embodiment 3 selects the cross-linked recovery PP-1 prepared in embodiment 2 # As the raw material component for preparing the modified PVC profile of the present invention, the mass parts formula of the remaining components and each component is shown in the following table 4, and the mass parts of the active calcium carbonate component are divided into four different additions one by one Adjustment, the mass parts of other components remain unchanged, according to the method and process described in Example 2 (including cross-linking pretreatment) to prepare four kinds of recycled PP modified PVC profiles with different active calcium carbonate content.

[0043] Table 4: The PVC profile formula table of the present invention that makes in embodiment 3

[0044]

[0045] The mechanical properties of the recycled PP-modified PVC profiles with four different active calcium carbonate contents prepared in Example 3 were compared with the profile C prepared in Exampl...

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Abstract

The invention discloses a recycled polypropylene modified polrvinyl chloride sectional material and a preparation method thereof. The sectional material is mainly prepared by blending 100 parts of polrvinyl chloride, 8 to 20 parts of crosslinking recycled polypropylene, 3 to 6 parts of stabilizer, 3 to 6 parts of titanium white powder, 3 to 10 parts of chlorinated polyethylene, 1 to 4 parts of acrylic impact modifier, 0.2 to 1.0 part of lubricant and 0 to 30 parts of active calcium carbonate. The sectional material has excellent performance, can effectively improve recycling utilization rate,saves resources and cost and is environmentally-friendly and safe.

Description

technical field [0001] The invention relates to a polyvinyl chloride profile and a preparation method thereof, in particular to a polyvinyl chloride profile modified with recycled waste materials and a preparation method thereof. Background technique [0002] With the rapid development of the plastics industry, waste plastics are also increasing year by year. Among them, polypropylene (referred to as PP) is widely used and used in a large amount. The waste generated after its processing, production and use accounts for about 25% of the total waste plastics. People are paying more and more attention to the pollution caused by waste plastics to the environment, which makes the recycling technology of waste plastics a hot research topic at home and abroad. [0003] Polyvinyl chloride (PVC) profiles are more corrosion-resistant than wood and steel, and have better sealing, sound insulation, and heat insulation than aluminum profiles and steel profiles. They also have exquisite a...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/12C08L23/28C08K13/02C08K3/22C08K3/26C08J3/24B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92895
Inventor 欧阳相会苏胜培周乃安张芳杨波杨治李志军莫笑君
Owner 湖南五强产业集团股份有限公司
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