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A polyvinyl chloride/ASA alloy

A technology of polyvinyl chloride and polyvinyl chloride resin, which is applied in the field of polyvinyl chloride/ASA alloy and its preparation, and can solve the problems of PVC blend alloy comprehensive mechanical properties, poor weather resistance and processing performance, etc.

Inactive Publication Date: 2009-09-16
国家复合改性聚合物材料工程技术研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of existing PVC blended alloys with poor comprehensive mechanical properties, weather resistance and processability, and provide a polyvinyl chloride / ASA alloy, which has good weather resistance, impact resistance, Chemical resistance, flame retardant, environmental protection, etc., can be used for injection molding

Method used

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  • A polyvinyl chloride/ASA alloy
  • A polyvinyl chloride/ASA alloy
  • A polyvinyl chloride/ASA alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Raw materials: PVC 100kg, ASA resin 10kg, stabilizer 5kg, lubricant 5kg, calcium carbonate 30kg

[0081] S-700 type low molecular weight polyvinyl chloride resin is selected, no plasticizer is added, the stabilizer is prepared by methyl tin and calcium stearate stabilizer according to the ratio of 7:1, and the lubricant is made of stearin Acid and polyethylene wax are formulated in a 2:1 ratio.

[0082] Preparation method: add polyvinyl chloride to the high-temperature mixing device of the high-speed mixing unit, then add the stabilizer, close the lid, and mix at a speed of 1300r / min. After the temperature reaches 90 ℃, add lubricant and mix, and wait until the temperature exceeds 100 ℃ When the temperature reaches 120°C, open the discharge port, transfer the material to the low-speed mixing device, add ASA powder and inorganic filler in turn, and mix at 650r / min for 10 minutes. Then the material is taken out to obtain a mixture, and the mixture is extruded and granula...

Embodiment 2

[0085] Raw materials: PVC 100kg, ASA resin 30kg, stabilizer 2kg, plasticizer 4kg, lubricant 9kg, titanium dioxide 1kg, calcium carbonate 60kg

[0086] S-1300 type low molecular weight polyvinyl chloride resin is selected. The stabilizer is made up of methyl tin and rare earth composite stabilizer according to the ratio of 3:1. The plasticizer is made of dioctyl phthalate (DOP). ) and tricresyl phosphate (TCP) in a ratio of 2:1, and the lubricant is prepared from stearic acid and polyethylene wax in a ratio of 2:1.

[0087] Preparation method: add polyvinyl chloride to the high-temperature mixing device of the high-speed mixing unit, then add the stabilizer, close the lid, and mix at a speed of 1300r / min. When the temperature reaches 80 ℃, add plasticizer and continue to mix, and the temperature reaches 90 After the temperature reaches 100°C, add lubricant and mix. When the temperature exceeds 100°C, open the air diffuser on the top cover to let the water vapor out. When the te...

Embodiment 3

[0090] Raw materials: PVC 100kg, ASA resin 15kg, stabilizer 7.5kg, plasticizer 7kg, lubricant 7kg, titanium dioxide 2kg, calcium carbonate 20kg

[0091] HDP-1800 type medium and high molecular weight polyvinyl chloride resin is selected. The stabilizer is prepared by calcium zinc stabilizer and calcium stearate according to the ratio of 7:1. The plasticizer is dioctyl phthalate. (DOP) and tricresyl phosphate (TCP) in a ratio of 2:1. The lubricant is prepared from n-butyl stearate, paraffin, and oxidized polyethylene wax in a ratio of 2:1:1. to make.

[0092] The preparation method is the same as that of Example 2.

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Abstract

The invention discloses a polyvinyl chloride (PVC) / ASA alloy, which is prepared by polyvinyl chloride resin, ASA resin and right amount of processing aids. The preparation method includes: mixing uniformly the polyvinyl chloride resin and processing material at 60-120 DEG C, adding ASA resin powders, mixing evenly, dropping the temperature to 43 DEG C, to obtain the mixture; extruding the mixture through a screw extruder to obtain the alloy, wherein, the temperature of the extruder head is 165 DEG C - 185 DEG C, and the revolution speed is 120-160 r / min. Compared with the existing technology, the PVC / ASA alloy prepared by the invention has high impact resistance, weather resistance, fire-retardant, superior synthesized dynamic performance, good processing performance, stable preparation process, non three wastes pollution. The alloy can be formulated into various colors according to requirements, can be produced by screw rod extruding continuous manufacturing method, and can also be produced by extrusion molding and injection molding according to manufacturing requirements of products.

Description

Technical field: [0001] The invention relates to the technical field of resin alloys, in particular to a polyvinyl chloride / ASA alloy and a preparation method thereof. Background technique: [0002] Polyvinyl chloride (PVC) resin has the advantages of excellent chemical stability, electrical insulation, flame retardancy, wear resistance, low price, and wide source of raw materials. Its output is second only to polyethylene (PE) and ranks first in the world's resin output. It is one of the most productive general-purpose plastics in the world. High-impact PVC alloys are widely used in construction materials, auto parts, computer parts, electronic instrument casings, household appliance casings, sports equipment and other fields. However, PVC is a brittle material with poor toughness. At the same time, due to the relatively unstable a-Cl in the PVC molecular structure, the weather resistance of pure PVC materials is poor. It is easily damaged by ultraviolet rays in the sun an...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L25/14C08L25/12B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 秦舒浩于杰贺杰郭建兵雷金峰
Owner 国家复合改性聚合物材料工程技术研究中心
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