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A kind of antifreeze cracking water supply pipe and its preparation method

A water supply pipe and anti-freeze cracking technology, which is applied in the field of anti-freeze crack water supply pipe formula and its preparation, can solve the problems of uneven dispersion of filler emulsions, and achieve the effect of poor thermal stability, good stability, and difficult precipitation

Active Publication Date: 2020-12-01
安庆市悦发管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of acidifying kaolin with dilute hydrochloric acid in the present invention is to remove the impurities in its internal channels, and can effectively make the surface of kaolin organic, so that the prepared filler emulsion can more effectively disperse the PVC masterbatch, and solve the problem of filler emulsion The problem of uneven dispersion between PVC masterbatches makes the stability of each part of the material consistent

Method used

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  • A kind of antifreeze cracking water supply pipe and its preparation method

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Effect test

Embodiment 1

[0028] (1) Preparation of modified kaolin: mix ordinary kaolin with an appropriate amount of dilute hydrochloric acid, stir for 0.5-1 hour until the mixture is uniform, centrifuge after impregnating for 15-25 hours, wash with distilled water several times, wash with AgNO 3 Solution test until Cl free － ions, put it in an oven at 80-100°C and fully dry it for 10-15 hours, then put it in a muffle furnace at 350-400°C for 2-3 hours, cool to room temperature, and grind it into powder to obtain modified kaolin. The purpose of acidifying kaolin with dilute hydrochloric acid is to remove impurities in its internal channels, and can effectively make the surface of kaolin organic, so that the prepared filler emulsion can more effectively disperse between PVC masterbatches, and solve the problem of filler emulsion in PVC masterbatch. The problem of uneven dispersion between the materials makes the stability of each part of the material consistent;

[0029] (2) Preparation of filler emu...

Embodiment 2

[0033](1) Preparation of modified kaolin: mix ordinary kaolin with an appropriate amount of dilute hydrochloric acid, stir for 0.5-1 hour until the mixture is uniform, centrifuge after impregnating for 15-25 hours, wash with distilled water several times, wash with AgNO 3 Solution test until Cl free － ions, put it in an oven at 80-100°C and fully dry it for 10-15 hours, then put it in a muffle furnace at 350-400°C for 2-3 hours, cool to room temperature, and grind it into powder to obtain modified kaolin. The purpose of acidifying kaolin with dilute hydrochloric acid is to remove impurities in its internal channels, and can effectively make the surface of kaolin organic, so that the prepared filler emulsion can more effectively disperse between PVC masterbatches, and solve the problem of filler emulsion in PVC masterbatch. The problem of uneven dispersion between the materials makes the stability of each part of the material consistent;

[0034] (2) Preparation of filler emul...

Embodiment 3

[0038] (1) Preparation of filler emulsion: Add 40 parts by weight of ordinary kaolin, 10 parts by weight of ammonium sulfate and 10 parts by weight of polybutyl acrylate to 40 parts by weight of deionized water in sequence, stir at room temperature for 1 to 2 hours until uniformly mixed, and obtain filler emulsion;

[0039] (2) Preparation of composite stabilizer: put 30 parts by weight of zinc carbonate and 20 parts by weight of deionized water into a flask condensed and refluxed, heat in a water bath at 80-90°C for 1-2 hours to reflux, and add 30 parts by weight to the solution. Parts by weight of dibenzoylmethane, continue to reflux in a water bath at 80 to 90°C for 2 to 3 hours, then centrifuge, remove the upper filtrate, and obtain crystalline organic complex zinc; combine organic complex zinc, 20 weight parts of calcium stearate and 25 weight parts Mix 100% deionized water into a beaker, stir in a water bath at 60-70°C for 2-3 hours until fully mixed, centrifuge and put ...

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Abstract

The invention discloses an anti-frost-cracking water supply pipe, made with, by weight, 60-70 parts of PVC (polyvinyl chloride), 20-30 parts of filler emulsion, 5-10 parts of a compound thermal stabilizer, 1-3 parts of other aids, and 30-40 parts of deionized water. Acidification of kaolin by dilute hydrochloric acid is intended for removing impurities in inner ducts; the surface of kaolin can beorganized; the prepared filler emulsion can more effectively disperse in PVC master batch; the problem that the filler emulsion disperses unevenly in the PVC master batch is solved; the stability levels of all parts of material are uniform; a templating agent is added into a precursor, ordered self-assembly in the material is guided under the acting forces of ionic bond, Van der Waals' force and hydrogen bond, and the inner structure of the material having good compactness and regular structure is formed; the compound thermal stabilizer prepared herein features rarity of separation and good stability, and the problem that the product has poor thermal stability is solved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a formula for preventing freezing and cracking of water supply pipes and a preparation method thereof. Background technique [0002] As we all know, PVC pipe originated in the 1930s and has a history of more than 80 years. It is a relatively mature product and is still the largest plastic pipe, accounting for about 60% of the entire plastic pipe market. In the past 50 years, my country's PVC pipes have been widely used in water supply, irrigation, construction, chemical and other fields. However, due to the performance defects of the material itself, a series of engineering accidents have also appeared. [0003] PVC pipe has the following defects that need further improvement: its toughness is insufficient, impact resistance, thermal stability and crack resistance are poor, and it is prone to brittle failure when it is subjected to strong external impact, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L33/08C08K9/02C08K3/34C08K3/30C08K3/26C08K5/098
CPCC08K2003/3054C08L27/06C08L2201/08C08L2203/18C08L33/08C08K9/02C08K3/346C08K3/30C08K3/26C08K5/098
Inventor 季琨舒琳童国忠
Owner 安庆市悦发管业有限公司
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