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Preparation method of modified aggregate for PVC pipeline

A technology of modification and pellets, applied in the field of preparation of modified pellets, can solve the problems of poor toughness and easy breakage of PVC pipes

Pending Publication Date: 2022-02-01
翁定也
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing PVC pipes have poor toughness and are easy to break, and there are few proprietary pellets for improving toughness on the market. Based on this, the present invention provides a method for preparing modified pellets for PVC pipes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of preparation method of the modified pellets that PVC pipe of the present embodiment is used, comprises the following steps:

[0023] Step 1: Preparation of grafting agent: Put bentonite into a grinder for grinding, grind to 100 mesh, then add maleic anhydride solution, first stir at a speed of 100r / min for 20min, after the stirring is completed, grafting agent is obtained;

[0024] Step 2: Preparation of modifier: Dissolve 10 parts of aminopropyltrimethoxysilane in 50 parts of toluene solution, then add 45 parts of straw fiber, first stir at 100r / min for 20min, and then filter after stirring , washed with water, dried, washed with water, and then the filtrate is sent to the grafting agent in S1 for stirring treatment. The stirring temperature is 75°C, the stirring speed is 210r / min, and the stirring time is 20min. After the stirring is completed, the modifier is obtained ;

[0025] Step 3: Stir and mix the bisphenol A epoxy resin and the modifier according to ...

Embodiment 2

[0034] A kind of preparation method of the modified pellets that PVC pipe of the present embodiment is used, comprises the following steps:

[0035] Step 1: Preparation of grafting agent: put bentonite into a grinder for grinding, grind to 200 mesh, then add maleic anhydride solution, first stir at a speed of 200r / min for 30min, and after the stirring is completed, grafting agent is obtained;

[0036] Step 2: Preparation of modifier: Dissolve 20 parts of aminopropyltrimethoxysilane in 70 parts of toluene solution, then add 55 parts of straw fiber, first stir at a speed of 200r / min for 30min, after the stirring is completed, then filter , washed with water, dried, washed with water, and then the filtrate was sent to the grafting agent in S1 for stirring treatment. The stirring temperature was 95°C, the stirring speed was 250r / min, and the stirring time was 30min. After the stirring was completed, the modifier was obtained ;

[0037] Step 3: Stir and mix the bisphenol A epoxy r...

Embodiment 3

[0046] A kind of preparation method of the modified pellets that PVC pipe of the present embodiment is used, comprises the following steps:

[0047] Step 1: Preparation of grafting agent: put bentonite into a grinder for grinding, grind to 150 mesh, then add maleic anhydride solution, first stir at a speed of 150r / min for 25min, and after the stirring is completed, grafting agent is obtained;

[0048] Step 2: Preparation of modifier: Dissolve 15 parts of aminopropyltrimethoxysilane in 60 parts of toluene solution, then add 50 parts of straw fiber, first stir at a speed of 150r / min for 25min, after the stirring is completed, then filter , washed with water, dried, washed with water, and then the filtrate was sent to the grafting agent in S1 for stirring treatment. The stirring temperature was 80°C, the stirring speed was 230r / min, and the stirring time was 25min. After the stirring was completed, the modifier was obtained ;

[0049] Step 3: Stir and mix the bisphenol A epoxy r...

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Abstract

The invention discloses a preparation method of modified granules for a PVC pipeline, the preparation method comprises the following steps: step 1, preparation of a grafting agent: feeding bentonite into a grinder for grinding, grinding until the granularity is 100-200 meshes, then adding a maleic anhydride solution, stirring for 20-30 minutes at the rotating speed of 100-200r / min, and obtaining the grafting agent after the stirring is finished. In preparation of the modified granules, the modified granules are prepared from three raw materials including modified bisphenol A epoxy resin, a nano medium body and a filler, straw fibers are firstly subjected to organic treatment in preparation of the modified bisphenol A epoxy resin to improve the organic degree, then modification is performed through the grafting agent, and the grafting agent is prepared from the bentonite and the maleic anhydride solution.

Description

technical field [0001] The invention relates to the technical field of PVC pipes, in particular to a preparation method of modified pellets for PVC pipes. Background technique [0002] The main component of PVC is polyvinyl chloride, and other ingredients are added to enhance its heat resistance, toughness, and ductility. PVC pipes (divided into PVC-U pipes, PVC-M pipes and PVC-O pipes) rigid polyvinyl chloride pipes are extruded by hot pressing after combining polyvinyl chloride resin with stabilizers and lubricants. The first plastic pipe to be developed and applied. [0003] Existing PVC pipes have poor toughness and are easy to break, and proprietary pellets for improving toughness rarely appear on the market. Based on this, the present invention provides a preparation method of modified pellets for PVC pipes. Contents of the invention [0004] The object of the present invention is to provide a kind of preparation method of the modified granular material that PVC pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L97/02C08K9/04C08K3/36C08K5/3415C08K5/19C08K3/34C08K7/00C08L27/06
CPCC08L63/00C08L97/02C08K9/04C08K3/36C08K5/3415C08K5/19C08K3/346C08K7/00C08L27/06C08L2203/18C08K2201/011C08L2205/16
Inventor 翁定也
Owner 翁定也
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