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High-abrasion-resistant and environment-friendly polyvinyl chloride (PVC) modified materials and preparation method thereof

A technology of modified materials and wear-resistant modifiers, which is applied in the field of high-wear-resistant and environmentally-friendly PVC modified materials and their preparation, which can solve problems such as human health hazards, low wear-resistant coefficient, and poor wear resistance, and achieve softness. Good electrical and electrical insulation properties, improved wear resistance, and the effect of improving wear resistance

Active Publication Date: 2013-04-24
广东祺龙科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has light weight, high strength, insulation, flame retardancy, corrosion resistance, It has the advantages of excellent comprehensive performance, low price and wide source of raw materials; but it also has the following disadvantages: 1. Poor toughness, easy to be brittle when impacted, so it cannot be used as a structural material. In addition, the brittleness of polyvinyl chloride is greatly affected by temperature. Large, the lower limit of general PVC products is -15°C, and the lower limit of soft PVC is -30°C; 2. Poor thermal stability, it begins to decompose HCl at 100°C, and decomposes more rapidly when it is higher than 150°C. The melting temperature of PVC is about 210°C; 3. The viscosity of PVC is extremely high and its fluidity is extremely poor, which limits its use to a certain extent.
For example, UL Company of the United States has adopted new standards for plastic products of household appliances, and its main indicators for the performance of wires and cables are required to reach: the number of wear-resistant times reaches 5,000 times. The current PVC material has poor wear resistance and low wear coefficient. Further optimization and improvement; in addition, the existing PVC sheathed cables, PVC plugs, PVC films and PVC pipes all have quite serious pollution, which will cause certain harm to human health. It is particularly important to develop an environmentally friendly PVC modified material important

Method used

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  • High-abrasion-resistant and environment-friendly polyvinyl chloride (PVC) modified materials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Weigh raw material SG-5 type PVC resin 80Kg, silicon dioxide 5Kg, trioctyl trimellitate 30Kg, epoxy soybean oil 1Kg, styrene-butadiene rubber 0.5Kg, natural rubber 0.5Kg, antimony trioxide 0.5Kg, boric acid 0.5Kg of zinc, 0.5Kg of dibutyltin dilaurate, 0.5Kg of rare earth stearate, 10Kg of chlorinated polyethylene with a chlorine content of 25%, 0.1Kg of paraffin wax, and 0.1Kg of stearic acid amide are mixed; into a high-speed blender, and stirred at a temperature of 100°C for 25 minutes; the stirred raw materials were extruded and granulated through a twin-screw extruder to obtain a highly wear-resistant and environmentally friendly PVC modified material; the twin-screw extruder The screw temperature is: the temperature of the first zone is 138°C, the temperature of the second zone is 135°C, the temperature of the third zone is 135°C, the temperature of the fourth zone is 132°C and the temperature of the fifth zone is 130°C. The mechanical and physical properties of t...

Embodiment 2

[0057] Weigh raw material SG-7 type PVC resin 90Kg, silicon dioxide 7Kg, trioctyl trimellitate 35Kg, epoxy soybean oil 2Kg, styrene-butadiene rubber 1Kg, natural rubber 1Kg, antimony trioxide 1Kg, zinc borate 2Kg, Di-n-octyltin dilaurate 1Kg, fatty acid rare earth 1Kg, chlorinated polyethylene 12Kg with a chlorine content of 30%, oxidized paraffin 0.3Kg, fatty acid alkanolamide 0.2Kg mixed; put the mixed raw materials into a high-speed blender , stirred at a temperature of 140°C for 15 minutes; the stirred raw materials were extruded and granulated through a twin-screw extruder to obtain a highly wear-resistant and environmentally friendly PVC modified material; the screw temperature of the twin-screw extruder was: The temperature is 140°C, the temperature in the second zone is 140°C, the temperature in the third zone is 135°C, the temperature in the fourth zone is 135°C, and the temperature in the fifth zone is 135°C. The mechanical and physical properties of the highly wear-...

Embodiment 3

[0059] Weigh raw materials SG-5 type PVC resin 100Kg, silicon dioxide 9Kg, trioctyl trimellitate 42Kg, epoxy soybean oil 4Kg, styrene-butadiene rubber 2Kg, natural rubber 2Kg, antimony trioxide 2Kg, zinc borate 3Kg, 2Kg of isooctyl tin dimethyl dimercaptoacetate, 2Kg of rare earth salicylic acid, 14Kg of chlorinated polyethylene with a chlorine content of 35%, 0.5Kg of liquid paraffin, and 0.4Kg of erucamide; put the mixed raw materials into In a high-speed blender, stir at a temperature of 120°C for 20 minutes; extrude and granulate the stirred raw materials through a twin-screw extruder to obtain a high wear-resistant and environmentally friendly PVC modified material; the screw of the twin-screw extruder The temperature is: zone 1 temperature 160°C, zone 2 temperature 160°C, zone 3 temperature 155°C, zone 4 temperature 150°C and zone 5 temperature 148°C. The mechanical and physical properties of the highly wear-resistant and environmentally friendly PVC modified material pr...

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Abstract

The invention relates to the technical field of polyvinyl chloride composite materials, in particular to a high-abrasion-resistant and environment-friendly polyvinyl chloride (PVC) modified materials and a preparation method of the high-abrasion-resistant and environment-friendly PVC modified materials. The modified materials comprise following raw materials, by weight, 80-120 parts of PVC resin, 5-15 parts of stuffing bulking agents, 31-70 parts of plasticizer, 1-10 parts of abrasion resistant modifying agents, 1-10 parts of fire retardant, 1-10 parts of stabilizer, 10-20 parts of impact modifier and 0.2-2 parts of lubricating agents. The raw materials are weighed according to the weight and are blended, after the raw materials are stirred, the stirred raw materials are extruded to be granulated into particles through a double-screw extruder to produce the modified materials. The prepared modified materials are good in abrasion resistant property, environment-friendly, high in strength, good in flame retardant efficiency, strong in compression property and toughness, good in processing property, and good in comprehensive property. The preparation method of the high-abrasion-resistant and environment-friendly PVC modified materials is simple in craft, convenient to operate and control, stable in quality and high in production efficiency and can be produced in a large scale industrialization mode.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride composite materials, in particular to a highly wear-resistant and environment-friendly PVC modified material and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the earliest industrialized and widely used general-purpose thermoplastics. It has the advantages of light weight, high strength, insulation, flame retardancy, corrosion resistance, excellent comprehensive performance, low price and wide source of raw materials; but also There are the following disadvantages: 1. The toughness is poor, and it is easy to be brittle when impacted, so it cannot be used as a structural material. In addition, the brittleness of polyvinyl chloride is greatly affected by temperature. The lower limit of general PVC products is -15°C. The lower limit of use of PVC is -30°C; 2. Poor thermal stability, it begins to decompose HCl at 100°C, and decomposes more ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/06C08L7/00C08L23/28C08K13/02C08K3/36C08K5/12C08K5/1515C08K3/22C08K3/38B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 宁建华朱其华
Owner 广东祺龙科技有限公司
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