Method for preparing stretchable bending-resistant PVC hose

A bending-resistant and flexible hose technology, applied in the field of PVC material preparation, can solve the problems of poor stretchability of PVC hose, easy whitening of break points, poor dispersion of PVC, etc., to improve low-temperature flexibility and phase Capacitance, the effect of improving stretch elasticity

Inactive Publication Date: 2019-01-22
FOSHAN CHANCHENG DISTRICT NUOGAO ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is that a large amount of filler needs to be added when the toughness of the current PVC hose is improved by plasticizer, the dispersion of polyvinyl chloride in the PVC hose is poor, the stretchability of the PVC hose is poor at low temperature, and the bend The defect that the inflection point is easy to turn white when it is folded provides a preparation method for a stretchable and bend-resistant PVC hose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] Take basalt and put it into a stone grinder to grind for 3 hours to obtain basalt abrasive. Put the basalt abrasive into a corundum crucible with a leak. The diameter of the leak is 8mm. Move the corundum crucible into a resistance furnace. Turn on the electricity and heat up to 1350°C, keep warm and melt for 20 minutes to obtain basalt molten material, open the leak nozzle, use a drawing rod to pull the drawing basalt molten material, and obtain basalt fibers with a diameter of 6mm; take 200mL tetraethyl orthosilicate and 300mL absolute ethanol, mix and release Put it into a beaker, add 60mL of hydrochloric acid with a mass fraction of 10% to the beaker, and stir for 1h with a magnetic stirrer at a speed of 400r / min to obtain a silica sol, add 20mL of 5% hydrochloric acid to the silica sol The polyvinyl alcohol was aged at room temperature for 20 hours to obtain a silica sol precursor, and the basalt fiber was immersed in the silica precursor to obtain an impregnation t...

example 2

[0027] Take basalt and put it into a stone grinder to grind for 3.5 hours to obtain basalt abrasive. Put the basalt abrasive into a corundum crucible with a leak. The diameter of the leak is 9mm. Move the corundum crucible into a resistance furnace. , turn on the electricity and heat up to 1370°C, keep warm and melt for 22 minutes to obtain basalt molten material, open the leak nozzle, pull the drawn basalt molten material with a drawing rod, and obtain basalt fibers with a diameter of 7mm; take 210mL of ethyl orthosilicate and mix with 320mL of absolute ethanol Put it into a beaker, add 70mL of hydrochloric acid with a mass fraction of 10% into the beaker, stir with a magnetic stirrer at a speed of 420r / min for 1.5h to obtain a silica sol, add 25mL of a mass fraction of 5% polyvinyl alcohol, aged at room temperature for 22 hours, to obtain a silica sol precursor, immerse basalt fibers in the silica precursor, to obtain an impregnation treatment solution, and use an ultrasonic ...

example 3

[0029] Take basalt and put it into a stone grinder to grind for 4 hours to obtain basalt abrasive. Put the basalt abrasive into a corundum crucible with a leak. The diameter of the leak is 10mm. Move the corundum crucible into a resistance furnace. Turn on the electricity and heat up to 1400°C, keep warm and melt for 25 minutes to obtain basalt molten material, open the leak nozzle, pull the drawing basalt molten material with a drawing rod, and obtain basalt fibers with a diameter of 8mm; take 220mL tetraethyl orthosilicate and 350mL absolute alcohol Put it into a beaker, add 80mL of hydrochloric acid with a mass fraction of 10% to the beaker, stir with a magnetic stirrer at a speed of 450r / min for 2h to obtain a silica sol, add 30mL of 5% hydrochloric acid to the silica sol The polyvinyl alcohol was aged at room temperature for 24 hours to obtain a silica sol precursor, and the basalt fiber was immersed in the silica precursor to obtain an impregnation treatment solution, whi...

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Abstract

The invention discloses a method for preparing a stretchable bending-resistant PVC hose, which belongs to the technical field of preparation of a PVC material. The main raw material of the PVC hose ofthe invention is polyvinyl chloride, and the polyvinyl chloride is mechanically modified by EPDM raw rubber, and the ethylene content of the used EPDM raw rubber is 50-55%, the EPDM can effectively improve the low temperature tensile properties and low temperature flexibility of polyvinyl chloride, and can effectively solve the problem of large changes in the low temperature tensile properties ofthe finished products caused by the use of a plasticizer, the EPDM easily absorbs the accumulated and modified zeolite powder surface, oriented and orderly arranged crystallization can be differentlygenerated, hydrogen chloride due to heat and photodegradation can be rapidly absorbed, so that the continuous decomposition of polyvinyl chloride can be blocked, the aging resistance performance of polyvinyl chloride is increased and is stable, and the method has wide application prospect.

Description

technical field [0001] The invention discloses a preparation method of a stretchable and bending-resistant PVC hose, which belongs to the technical field of PVC material preparation. Background technique [0002] PVC, the five general-purpose plastics used next to PE, is a cheap resin, but has good physical and chemical properties. After adding plasticizers, stabilizers and various performance additives to the formula, it can be made It is made into a bright PVC hose, which is widely used in agricultural irrigation, household cleaning, industrial transportation of fluid media and pneumatic tools. The main component of PVC is polyvinyl chloride, and other ingredients are added to enhance its heat resistance, toughness, and ductility. The top layer of this surface film is lacquer, the main component in the middle is polyvinyl chloride, and the bottom layer is back-coated adhesive. [0003] Polyvinyl chloride (PVC) is light yellow translucent and shiny. Transparency is bette...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/16C08L91/00C08K13/06C08K9/04C08K7/26C08K3/22C08K5/098C08K9/02C08K7/10C08K3/36C08J3/28
CPCC08J3/28C08J2327/06C08J2423/16C08J2491/00C08K2003/2227C08K2003/2296C08L27/06C08L2201/08C08L2203/18C08L2205/03C08L23/16C08L91/00C08K13/06C08K9/04C08K7/26C08K3/22C08K5/098C08K9/02C08K7/10C08K3/36
Inventor 胡次兵章红英王素香
Owner FOSHAN CHANCHENG DISTRICT NUOGAO ENVIRONMENTAL PROTECTION TECH CO LTD
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