PVC (polyvinyl chloride) elastomer and method for preparing same

An elastomer and raw material technology, which is applied in the field of PVC elastomer and its preparation, can solve the problems of low tensile strength, low bending strength and low tear strength of plastic alloy materials, and achieves low cost, excellent weather resistance and simple operation. Effect

Inactive Publication Date: 2016-07-20
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-mentioned technical problems, the present application provides a PVC elastomer and its preparation method to solve the technical problems of low tensile strength, low tear 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] Weigh 100 parts of PVC according to the ratio of parts by weight; 20 parts of nano-calcium carbonate; 1 part of calcium stearate; 3 parts of zinc stearate; 1 part of epoxy soybean oil; 1,1-methylene-2-naphthol 0.1 parts; 10 parts of hydrogenated nitrile rubber; 4 parts of styrene-diethylene; 5 parts of magnesium oxide; 6 parts of dibutyltin maleate; 20 parts of SMA;

[0027] Put nano-calcium carbonate, polytrimethylene adipate and SMA in a reactor equipped with a stirrer and a thermometer, heat to 40°C, mix for 5 minutes, add PVC, heat up to 70°C, stir for 10 minutes, add epoxy soybean oil, hydrogenate Nitrile rubber and styrene-diethylene, heated to 100°C, stirred for 20 minutes, put into a high-speed kneader together with the remaining raw materials, raised to 170°C, and kneaded at 700r / min for 6 minutes.

[0028] After kneading, put it into a twin-screw extruder, the barrel temperature is 150°C, 155°C, 160°C, 165°C, 170°C, the screw temperature is 170°C, the head tem...

Embodiment 2

[0031]Weigh 100 parts of PVC according to the ratio of parts by weight; 40 parts of nano-calcium carbonate; 20 parts of calcium stearate; 7 parts of zinc stearate; 5 parts of epoxy soybean oil; 1,1-methylene-2-naphthol 0.5 parts; 50 parts of hydrogenated nitrile rubber; 8 parts of styrene-diethylene; 10 parts of magnesium oxide; 10 parts of dibutyltin maleate; 60 parts of SMA;

[0032] Put nano-calcium carbonate, polytrimethylene adipate and SMA in a reactor equipped with a stirrer and a thermometer, heat to 60°C, mix for 10 minutes, add PVC, heat up to 90°C, stir for 30 minutes, add epoxy soybean oil, hydrogenate Nitrile rubber and styrene-diethylene, heated up to 120°C, stirred for 40 minutes, put into a high-speed kneader together with the remaining raw materials, heated up to 190°C, and kneaded at 900r / min for 10 minutes.

[0033] After kneading, put it into a twin-screw extruder, the barrel temperature is 160°C, 165°C, 170°C, 175°C, 180°C, the screw temperature is 180°C, ...

Embodiment 3

[0036] Weigh 100 parts of PVC according to the ratio of parts by weight; 25 parts of nano-calcium carbonate; 5 parts of calcium stearate; 4 parts of zinc stearate; 2 parts of epoxy soybean oil; 1,1-methylene-2-naphthol 0.2 parts; 20 parts of hydrogenated nitrile rubber; 5 parts of styrene-diethylene; 6 parts of magnesium oxide; 7 parts of dibutyltin maleate; 30 parts of SMA; 9 parts of polypropylene adipate.

[0037] Put nano-calcium carbonate, polytrimethylene adipate and SMA in a reactor equipped with a stirrer and a thermometer, heat to 40°C, mix for 5 minutes, add PVC, heat up to 70°C, stir for 10 minutes, add epoxy soybean oil, hydrogenate Nitrile rubber and styrene-diethylene, heated to 100°C, stirred for 20 minutes, put into a high-speed kneader together with the remaining raw materials, raised to 170°C, and kneaded at 700r / min for 6 minutes.

[0038] After kneading, put it into a twin-screw extruder, the barrel temperature is 150°C, 155°C, 160°C, 165°C, 170°C, the scre...

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Abstract

The invention discloses a PVC (polyvinyl chloride) elastomer and a method for preparing the same. The PVC elastomer comprises PVC, nanometer calcium carbonate, calcium stearate, zinc stearate, epoxidized soybean oil, 1, 1-methylene-2-naphthol, hydrogenated nitrile butadiene rubber, divinyl benzene, magnesium oxide, dibutyltin maleate, polypropylene glycol adipate and SMA (styrene maleic anhydride). The PVC elastomer and the method have the advantages that the PVC elastomer is high in strength, the tensile strength of the PVC elastomer is 20-60 MPa, and the Shore hardness of the PVC elastomer is 80-100 A; the PVC elastomer is good in appearance, the impact strength of the PVC elastomer is 15-35 kJ/m<2>, and the Vicat softening point of the PVC elastomer is 115-155 DEG C; the permanent compression deformation of the PVC elastomer is 15-35%, the PVC elastomer is high in elasticity, the bending strength of the PVC elastomer is 15-55 MPa, and the tear strength of the PVC elastomer is 35-55 N/mm; the PVC elastomer is excellent in weather fastness and creep resistance, low in cost and easy to operate and can be widely produced, the breaking elongation of the PVC elastomer is 450-650%, the melt flow index of the PVC elastomer is 6-10 g/10min, the water absorption of the PVC elastomer is 0.001-0.02%, and accordingly exiting materials can be continuously replaced.

Description

technical field [0001] The application belongs to the field of PVC materials, and in particular relates to a PVC elastomer 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 me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L91/00C08L15/00C08L67/02C08K13/02C08K3/26C08K5/098C08K3/22C08K5/57
CPCC08L27/06C08K2201/011C08K2201/014C08L2205/035C08L91/00C08L15/00C08L67/02C08K13/02C08K2003/265C08K5/098C08K2003/222C08K5/57
Inventor 陈逸君
Owner 陈逸君
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