High temperature resistant environment-friendly polyvinyl chloride (PVC) modified material and preparing method thereof

A modified material and high temperature resistant technology, which is applied in the field of high temperature resistant and environmentally friendly PVC modified materials and its preparation, can solve the problems of high temperature resistance only up to 105°C, poor fluidity, high viscosity, etc., to improve hardness and heat resistance, Effect of improving surface gloss and surface smoothness

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.
[0005] The performance indicators of most existing PVC materials only meet the basic requirements of national standards. For many special environments such as high temperature environments, the performance of current PVC materials cannot reliably meet the needs of long-term use under high temperature conditions, and the highest high temperature resistance is It can only reach 105°C, and the high temperature resistance of PVC materials needs to be further optimized and improved; in addition, the existing PVC sheathed cables, PVC plugs, PVC films and PVC pipes all have quite serious pollution, which will cause certain damage to human health. harm, it is particularly important to develop an environmentally friendly PVC material

Method used

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  • High temperature resistant environment-friendly polyvinyl chloride (PVC) modified material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Weigh raw materials SG-5 type PVC resin 80Kg, heavy calcium carbonate 15Kg, talcum powder 15Kg, trioctyl trimellitate 30Kg, epoxy soybean oil 1Kg, N-phenylmaleimide / styrene / propylene Acrylic terpolymer 0.5Kg, α-methylstyrene / styrene / acrylonitrile terpolymer 0.5Kg, antimony trioxide 0.5Kg, calcium borate 0.5Kg, tris(isooctyl thioglycolate) antimony 0.5Kg , 0.5Kg of rare earth stearate, 5Kg of acrylonitrile / butadiene / styrene terpolymer with 15% butadiene unit content, 0.1Kg of paraffin and 0.1Kg of fatty acid are mixed; the raw materials after mixing are put into high-speed blending In the machine, stir at a temperature of 100°C for 25 minutes; extrude and granulate the stirred raw materials through a twin-screw extruder to obtain a high-temperature resistant and environmentally friendly PVC modified material; the screw temperature of the twin-screw extruder is: 1 The temperature in the zone is 138°C, the temperature in the second zone is 135°C, the temperature in the thi...

Embodiment 2

[0059] Weigh 90Kg of raw material SG-7 PVC resin, 20Kg of heavy calcium carbonate, 20Kg of talcum powder, 36Kg of trioctyl trimellitate, 2Kg of epoxy soybean oil, N-phenylmaleimide / styrene / propylene Acrylic terpolymer 1Kg, α-methylstyrene / styrene / acrylonitrile terpolymer 1Kg, antimony trioxide 1Kg, calcium borate 2Kg, penta(isooctyl thioglycolate) antimony 1Kg, fatty acid rare earth 1Kg, 7Kg of acrylonitrile / butadiene / styrene terpolymer with a butadiene unit content of 17%, mixed with 0.3Kg of oxidized paraffin and 0.2Kg of fatty acid; put the mixed raw materials into a high-speed blender, at 140°C Stir for 15 minutes; extrude and granulate the stirred raw materials through a twin-screw extruder to obtain a high-temperature resistant and environmentally friendly PVC modified material; the screw temperature of the twin-screw extruder is: the temperature of the first zone is 140 ° C, The temperature is 140°C, the temperature in the third zone is 135°C, the temperature in the fou...

Embodiment 3

[0061] Weigh raw materials SG-5 type PVC resin 100Kg, heavy calcium carbonate 25Kg, talcum powder 25Kg, trioctyl trimellitate 42Kg, epoxy soybean oil 4Kg, N-phenylmaleimide / styrene / propylene Acrylic terpolymer 2Kg, α-methylstyrene / styrene / acrylonitrile terpolymer 2Kg, antimony trioxide 2Kg, calcium borate 3Kg, tris(isooctyl thioglycolate) antimony 2Kg, salicylic acid rare earth 2Kg, butadiene unit content 19% acrylonitrile / butadiene / styrene terpolymer 9Kg, liquid paraffin 0.5Kg and fatty acid 0.4Kg mix; The raw material after mixing is put into high-speed blender, at 120 Stir at ℃ for 20 minutes; Extrude and granulate the stirred raw materials through a twin-screw extruder to obtain a high-temperature-resistant and environmentally friendly PVC modified material; the screw temperature of the twin-screw extruder is: the first zone temperature is 160°C The temperature in the second zone is 160°C, the temperature in the third zone is 155°C, the temperature in the fourth zone is 15...

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Abstract

The invention relates to the technical field of polyvinyl chloride composite materials, in particular to a high temperature resistant environment-friendly polyvinyl chloride (PVC) modified material and a preparing method thereof. The modified material comprises by weight, 80-120 parts of PVC resin, 30-70 parts of filling agent, 31-70 parts of plasticizer, 1-10 parts of hot-resistant modifying agent, 1-10 parts of fire retardant, 1-10 parts of stabilizing agent, 5-15 parts of impact modifier and 0.2-2 parts of lubricating agent. Each raw material is weighed by weight and mixed after being stirred; the raw material is squeezed out of prilling through a double-screw extruder and the modified material is available. The hot temperature resistant performance of the modified material manufactured by the preparing method is fine; the maximum usage temperature can reach up to 135 DEG C. The modified material is environment-friendly and has the advantages of high intensity, good flame retardant effects, strong compression performance and toughness, excellent processing performance and better comprehensive performance. The preparing method of the high temperature resistant environment-friendly polyvinyl chloride (PVC) modified material has the advantages of being simple in process, convenient to control and operate, stable in quality, and high in production efficiency. In addition, the preparation method of the high temperature resistant environment-friendly polyvinyl chloride (PVC) modified material can be used for a large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride composite materials, in particular to a high-temperature resistant and environmentally 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 decompose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L25/12C08L25/16C08K13/02C08K3/26C08K3/34C08K5/12C08K5/1515C08K3/22C08K3/38B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 宁建华朱其华
Owner 广东祺龙科技有限公司
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