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HDPE/PVC blended modified material

A blending modification and basic technology, applied in the field of resin materials, can solve the problems of poor adhesion improvement, difficult industrial application, and high investment costs, and achieves improved adhesion, improved melt fluidity, The effect of reducing production costs

Active Publication Date: 2021-12-07
福建亚通新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical method mainly improves the roughness of the surface of the material to be coated by grinding, sandblasting, etc., thereby improving the adhesion. However, for HDPE / PVC blended modified materials, which are often used to prepare pipes and plates, it is necessary to ensure that the outer surface of the product is Good smoothness, not suitable for physical treatment
However, the corona treatment method and the plasma treatment method have high equipment investment costs and are difficult to industrialize
The solvent treatment method is to use a solvent to clean the wax and oil stains on the surface of the material, but the effect of improving the adhesion of the material itself is not good.
The most effective and low-cost method is to use an adhesion promoter to surface treat the material to improve adhesion to the paint, but some substances in the adhesion promoter have a risk of dissolution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] HDPE / PVC blend modified material, including 30kg of HDPE (HDPE 2480), 70kg of PVC (PVC-SG5), 6kg of compatibilizer, 2kg of silane coupling agent (KH-560), 5kg of calcium zinc stabilizer agent (SAK-CZ78-NP), 25kg of filler, 2kg of lubricant (microcrystalline wax) and 1kg of impact modifier (CPE);

[0031] Described compatibilizer is the maleic anhydride grafted polyethylene ( C-26) and maleic anhydride grafted polypropylene ( E-43);

[0032] Described filler is basic magnesium sulfate whisker and talcum powder (BHS-8860) after PMMA activation; The mass ratio of described basic magnesium sulfate whisker and talcum powder is 2.5:1; Described PMMA and basic sulfuric acid The total mass ratio of magnesium whiskers and talcum powder is 1:3;

[0033] The performance parameter of described PMMA is: density 1.18g / cm 3 Tensile stress 72MPa, tensile modulus 3300MPa, bending strength 105MPa, tensile strain 4.5%, Izod notched impact strength 2KJ / m 2 ;

[0034] The preparatio...

Embodiment 2

[0042] HDPE / PVC blend modified material, by weight, including 50kg of HDPE, 50kg of PVC, 4kg of compatibilizer, 4kg of silane coupling agent, 3kg of calcium zinc stabilizer, 20kg of filler, 1kg of lubricant agent (microcrystalline wax) and 2kg of impact modifier (CPE);

[0043] The compatibilizer is maleic anhydride grafted polyethylene and maleic anhydride grafted polypropylene with a mass ratio of 2:1;

[0044] Described filler is basic magnesium sulfate whisker and talcum powder after PMMA activation; The mass ratio of described basic magnesium sulfate whisker and talcum powder is 2:1; Described PMMA and basic magnesium sulfate whisker and talcum powder The total mass ratio of powder is 1:3;

[0045] The preparation method of the filler is as follows: dry basic magnesium sulfate whiskers and talcum powder, grind and mix for 7 minutes, then add water to disperse into a slurry, then add PMMA and hard powder dispersed in absolute ethanol and toluene (4:1). Calcium fatty acid...

Embodiment 3

[0049] HDPE / PVC blend modified material, by weight, including 40kg of HDPE, 60kg of PVC, 8kg of compatibilizer, 2kg of silane coupling agent, 4kg of calcium zinc stabilizer, 35kg of filler, 3kg of lubricant agent (microcrystalline wax), 1.5kg of plasticizer (DINP), 3kg of impact modifier (CPE), 10kg of PVC blue masterbatch, 3kg of PE anti-oxidation masterbatch;

[0050] The compatibilizer is maleic anhydride grafted polyethylene and maleic anhydride grafted polypropylene with a mass ratio of 2:1;

[0051] Described filler is basic magnesium sulfate whisker and talcum powder after PMMA activation; The mass ratio of described basic magnesium sulfate whisker and talcum powder is 2.3:1; Described PMMA and basic magnesium sulfate whisker and talcum powder The total mass ratio of powder is 1:3;

[0052] The preparation method of the filler is as follows: dry basic magnesium sulfate whiskers and talcum powder, grind and mix for 10 minutes, then add water to disperse into a slurry, t...

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Abstract

The invention discloses an HDPE (high-density polyethylene) / PVC (polyvinyl chloride) blended modified material, and belongs to the technical field of resin materials. The blended modified material comprises the following components in parts by weight: HDPE, PVC, a compatibilizer, a coupling agent, a heat stabilizer, a filler, a lubricant, a plasticizer and an impact modifier; the compatibilizer is maleic anhydride grafted polyethylene and maleic anhydride grafted polypropylene; and the filler is basic magnesium sulfate whiskers activated by PMMA and talcum powder. According to the HDPE / PVC blended modified material provided by the invention, the basic magnesium sulfate whisker and the talcum powder are modified by utilizing the hard PMMA, so that the adhesive force of an obtained finished product to a paint film can be improved, and meanwhile, the dispersity and compatibility of a filler in an HDPE / PVC blended polymer are favorably improved.

Description

technical field [0001] The invention belongs to the technical field of resin materials, and in particular relates to an HDPE / PVC blended modified material. Background technique [0002] Polyvinyl chloride (PVC) is one of the earliest industrially produced synthetic resins. It has the advantages of large output, light weight, high strength, oil resistance, chemical resistance, flame retardancy, and excellent electrical properties. It is widely used in various industries. However, PVC products also have problems such as poor notch impact resistance, poor cold resistance, and easy aging and brittleness, which limit their application range. Polyethylene (PE) is a widely used resin, which has the advantages that PVC lacks, such as low temperature resistance, good impact resistance, and good processing fluidity. Therefore, various types of PE, such as HDPE, are often added to the preparation of PVC products for blending Modification, to improve the processing performance and comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/06C08L51/06C08K9/04C08K7/08C08K3/34
CPCC08L27/06C08L23/06C08L2207/062C08K2201/003C08K2201/016C08L51/06C08K9/08C08K9/04C08K7/08C08K3/34
Inventor 陈晓梅马鑫彭伏弟陈鹊
Owner 福建亚通新材料科技股份有限公司
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