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PVC master batch and preparation method thereof

A masterbatch and raw material technology, applied in the field of PVC masterbatch and its preparation, can solve the problems of low bending strength, low tensile strength and low impact strength of plastic alloy materials, and achieve the effects of low cost, simple operation and high strength

Inactive Publication Date: 2016-05-25
陈逸君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the above technical problems, the present application provides a PVC masterbatch and its preparation method to solve the technical problems of low tensile strength, low impact strength and low bending strength of existing plastic alloy materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Put ESBO, DOP and carbon black into a grinder, grind to 1 μm, add the remaining raw materials, put them into a high-speed kneader, raise the temperature to 100°C, and knead at 600r / min for 4min.

[0027] Put into twin-screw extruder after kneading, barrel temperature 100°C, 115°C, 130°C, 145°C, 160°C, screw temperature 160°C, head temperature 160°C, 155°C, 155°C, 160°C, 165°C, The screw speed is 50r / min, and the feeding speed is 25r / min.

[0028] The product has high strength, the tensile strength is 50MPa, the tensile modulus is 3200MPa, and the Shore hardness is 60D; the appearance is uniform and glossy, the coloring strength is 95%, and the impact strength is 15kJ / m 2 , heat distortion temperature 120 ℃; flexural strength 15MPa, flexural modulus 2GPa; elongation at break 100%, melt flow index 7g / 10min.

[0029] Example 2:

Embodiment 2

[0031] Put ESBO, DOP and carbon black into a grinder, grind to 5 μm, add the remaining raw materials, put them into a high-speed kneader, raise the temperature to 120°C, and knead at 800r / min for 8min.

[0032] After kneading, put it into a twin-screw extruder, the barrel temperature is 110°C, 125°C, 140°C, 155°C, 170°C, the screw temperature is 170°C, the head temperature is 170°C, 165°C, 165°C, 170°C, 175°C, The screw speed is 70r / min, and the feeding speed is 45r / min.

[0033]The product has high strength, tensile strength 60MPa, tensile modulus 3300MPa, Shore hardness 65D; uniform and glossy appearance, coloring strength 100%, impact strength 20kJ / m 2 , heat distortion temperature 125 ℃; flexural strength 25MPa, flexural modulus 2.5GPa; elongation at break 110%, melt flow index 8g / 10min.

[0034] Embodiment 3:

Embodiment 3

[0036] Put ESBO, DOP and carbon black into the grinder, grind to 1μm, add the remaining raw materials, put them into a high-speed kneader, raise the temperature to 100-120°C, and knead at 600-800r / min for 4-8min.

[0037] Put into twin-screw extruder after kneading, barrel temperature 100°C, 115°C, 130°C, 145°C, 160°C, screw temperature 160°C, head temperature 160°C, 155°C, 155°C, 160°C, 165°C, The screw speed is 50r / min, and the feeding speed is 25r / min.

[0038] The product has high strength, the tensile strength is 70MPa, the tensile modulus is 3400MPa, and the Shore hardness is 70D; the appearance is uniform and glossy, the coloring strength is 105%, and the impact strength is 25kJ / m 2 , heat distortion temperature 130 ℃; flexural strength 35MPa, flexural modulus 3GPa; elongation at break 120%, melt flow index 9g / 10min.

[0039] Embodiment 4:

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Abstract

The invention discloses a PVC master batch and a preparation method thereof. According to the preparation method, PVC, ESBO, DOP, ACR, paraffin, carbon black, lead stearate, barium stearate, cadmium stearate, PE wax, antimonous oxide and titanium dioxide are weighed in parts by weight, the product is high in strength, the tensile strength is 50MPa-90MPa, the tensile modulus is 3200MPa -3600MPa, and the Shore hardness is 60D-80D; the appearance of the product is uniform and glossy, the color intensity is 95%-115%, the impact strength is 15kJ / m<2>-35kJ / m<2>, the thermal deformation temperature is 120-140 DEG C, the bending strength of the product is 15MPa-55MPa, the bending modulus is 2GPa-4GPa, the elongation at break is 100%-140%, and the melt flow index is 7g / min-11g / min; and the cost is low, the operation is simple, and the PVC master batch can be widely applied to the production and can be used for continuously replacing existing materials.

Description

technical field [0001] The application belongs to the field of PVC materials, and in particular relates to a PVC masterbatch and a preparation method thereof. Background technique [0002] Polyvinyl chloride, English abbreviation PVC (Polyvinylchloride), is a vinyl chloride monomer (vinylchloridemonomer, referred to as VCM) in peroxides, azo compounds and other initiators; or under the action of light and heat according to the mechanism of free radical polymerization. of polymers. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. [0003] The molecular weight of industrially produced PVC is generally in the range of 50,000 to 110,000, with a large polydispersity, and the molecular weight increases with the decrease of the polymerization temperature; there is no fixed melting point, it starts to soften at 80 to 85°C, and becomes viscoelastic at 130°C , 160 ~ 180 ℃ began to change into a viscous flow state; good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L33/04C08L23/06C08L91/06C08L91/00C08K13/02C08K3/04C08K5/098C08K3/22C08K5/12B29C47/92B29C48/92
CPCC08L27/06B29C48/92B29C2948/9259B29C2948/92704C08K2201/014C08L2201/08C08L2205/02C08L2205/035C08L33/04C08L23/06C08L91/06C08L91/00C08K13/02C08K3/04C08K5/098C08K2003/2241C08K3/2279C08K5/12
Inventor 陈逸君
Owner 陈逸君
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