Long glass fiber-reinforced polyvinyl chloride sheet as well as preparation method of on-line mixing of polyvinyl chloride sheet

A polyvinyl chloride and long glass fiber technology, which is applied in the field of plastic product processing, can solve the problems of high melt viscosity, poor fluidity, and difficult processing.

Inactive Publication Date: 2012-12-19
安徽福美达新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, most of the thermoplastic resins used in the developed LFT products are polypropylene, nylon, etc. Due to the poor thermal stability, high melt viscosity and poor fluidity of heat-sensitive polyvinyl chloride, after adding glass fiber, the fluidity of the system Worse and more difficult to process, so far there is no research report on the preparation method of long glass fiber reinforced polyvinyl chloride

Method used

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  • Long glass fiber-reinforced polyvinyl chloride sheet as well as preparation method of on-line mixing of polyvinyl chloride sheet
  • Long glass fiber-reinforced polyvinyl chloride sheet as well as preparation method of on-line mixing of polyvinyl chloride sheet
  • Long glass fiber-reinforced polyvinyl chloride sheet as well as preparation method of on-line mixing of polyvinyl chloride sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Feed 100 parts of PVC (K value: 66) into the first zone of the first-stage co-rotating twin-screw extruder, add additives (including 2 parts of mercaptan dibutyltin, 1 part of calcium stearate, stearate Zinc acid 0.5 parts, butyl stearate 2 parts, higher fatty acid 2 parts, paraffin wax 0.5 parts, high melting point oxidized polyethylene 0.5 parts, PE-g-MAH 3 parts) After fully mixing, feed the first stage co-rotating twin-screw In the second zone of the extruder, the activated calcium carbonate is fed into the sixth zone of the first-stage co-rotating twin-screw extruder, and 10 parts of glass fiber non-twisted roving are introduced into the coupling agent KH550 infiltration tank on the surface treatment machine, and wound around 6 The hot roller (110°C) stays for 10 minutes, then feeds into the third zone of the second-stage twin-screw extruder, extrudes from the coat-hanger die of the second-stage twin-screw extruder (head pressure 8MPa), and then is calendered by thr...

Embodiment 2

[0028] Feed 100 parts of PVC (K value: 68) into the first zone of the first-stage co-rotating twin-screw extruder, add additives (including 2.5 parts of mercaptan dibutyltin, 0.5 parts of calcium stearate, stearate Zinc acid 0.3 part, butyl stearate 1 part, higher fatty acid 1 part, paraffin wax 1 part, high-melting point oxidized polyethylene 1 part, PE-g-MAH 4 parts) fully mixed, fed into the first stage of the same direction In the second zone of the screw extruder, the activated calcium carbonate is fed into the sixth zone of the first-stage co-rotating twin-screw extruder. 20 parts of glass fiber non-twist roving are introduced into the coupling agent KH550 soaking tank on the surface treatment machine, and the warp 6 hot rollers (110°C) stay for 10 minutes, then feed into the third zone of the second-stage twin-screw extruder, extrude from the second-stage twin-screw extruder coat hanger die (head pressure 8MPa), and then pass through the three-roller Calendering, shapin...

Embodiment 3

[0030] Feed 100 parts of PVC (K value: 70) into the first zone of the first-stage co-rotating twin-screw extruder, add additives (including 3 parts of mercaptan dibutyltin, 0.4 parts of calcium stearate, stearate Zinc acid 0.4 parts, butyl stearate 2 parts, higher fatty acid 2 parts, paraffin 1 part, high melting point oxidized polyethylene 0.8 parts, PE-g-MAH 3 parts) After fully mixing, feed the first stage co-rotating twin-screw In the second zone of the extruder, activated calcium carbonate is fed into the sixth zone of the first-stage co-rotating twin-screw extruder. 30 parts of glass fiber no-twisted roving are introduced into the infiltration tank of coupling agent KH550 on the surface treatment machine, and wound by 6 The hot roller (110°C) stays for 10 minutes, then feeds into the third zone of the second-stage twin-screw extruder, extrudes from the coat-hanger die of the second-stage twin-screw extruder (head pressure 8MPa), and then is calendered by three rollers , ...

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Abstract

The invention discloses a long glass fiber-reinforced polyvinyl chloride (PVC) sheet as well as a preparation method of on-line mixing of the polyvinyl chloride sheet. The long glass fiber-reinforced polyvinyl chloride sheet comprises the following components by weight: 100 parts of PVC; 2-3 parts of dibutyltin mercaptide; 0.5-1 parts of calcium stearate; 0.2-0.5 parts of zinc stearate; 1-2 parts of butyl stearate; 1-2 parts of higher fatty acid; 0.5-1.5 parts of paraffin; 0.3-1 parts of poly(ethylene oxide) with high melting point; 2-5 parts of polyethylene-graft-maleic aldehyde (PE-g-MAH); 5-30 parts of glass fiber; 0.1-0.5 parts of a coupling agent and 10-30 parts of active calcium carbonate. The preparation method of on-line mixing of the polyvinyl chloride sheet comprises the steps of feeding PVC, various additives and fillers into a first-stage co-rotating two-screw extruder, mixing on line, and preplasticizing; transferring into a second-stage counter-rotating parallel two-screw extruder, introducing the surface-treated glass fiber into the second-stage extruder and mixing with the materials, cutting, opening, homogenizing, plasticizing, building pressure and extruding from a coat-hanger die; and packaging after being processed by using a three-roll calender, a forming machine and a cutting machine.

Description

technical field [0001] The invention belongs to the technical field of plastic product processing, and relates to a long glass fiber reinforced polyvinyl chloride sheet and a preparation method thereof, in particular to a long glass fiber reinforced polyvinyl chloride sheet based on double-stage twin-screw extrusion and its on-line compounding Preparation. Background technique [0002] Polyvinyl chloride has the characteristics of low price, excellent wear resistance and corrosion resistance, and has a wide range of applications, but its strength, toughness, temperature resistance, and dimensional stability are difficult to meet the needs of engineering applications. Reinforcement of polyvinyl chloride through glass fiber is an important way to improve its comprehensive performance. In recent years, many studies have been carried out on the preparation of glass fiber reinforced polyvinyl chloride composite materials at home and abroad. The main preparation methods of glass f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/06C08K9/06C08K7/14C08J5/18C08J5/08B29C47/00B29C47/92B29C48/40B29C48/92
CPCB29B9/14B29B7/46B29B7/72B29B7/90B29B9/06B29B9/12B29C48/40
Inventor 董擎之张彦庆高楠陈福涛汪根龙张三喜
Owner 安徽福美达新材料科技有限公司
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