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A kind of anti-oxidation pvc communication pipe and preparation method thereof

An anti-oxidation and communication tube technology, applied in the field of communication tubes, can solve the problems of deterioration of physical and mechanical properties, loss of application value, etc., and achieve the effects of good compatibility, improved oxidation resistance, and uniform dispersion

Active Publication Date: 2022-03-25
北方中意新材料(桐庐)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the many weaknesses in the structure of PVC itself, such as branched chains, terminal double bonds, residual initiators, terminal metal impurities, oxygen-containing structures, etc., these unstable factors are oxidized under the action of external factors such as light, heat, and oxygen. , so that its physical and mechanical properties deteriorate and lose its application value. Therefore, in order to improve the service life of PVC pipes, it is also necessary to improve the oxidation resistance of PVC communication pipes

Method used

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  • A kind of anti-oxidation pvc communication pipe and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Preparation of Antioxidant Microcapsules

[0030] Add 10 g of caffeic acid to 500 ml of deionized water, heat to 55 °C and stir to fully dissolve to obtain a caffeic acid solution. Under a nitrogen atmosphere, add ferrous chloride solution with an equal volume concentration of 10 g / L, stir and mix evenly, and then keep the reaction for 2 hours. Then add 8g of polyvinyl alcohol, continue to stir at a speed of 400r / min for 1h, and then perform ultrasonic treatment for 10min to obtain an emulsion. During the whole process of the reaction, adjust the pH to 7-8 with 1mol / L sodium hydroxide solution.

[0031]After stirring and mixing 60g isophorone diisocyanate, 5g 2-hexene-1,6-diol, and 70g cyclohexane evenly, the prepolymerization was carried out under the condition of 50℃ for 2h to obtain a prepolymer. The prepolymer was added dropwise to the emulsion under the condition of stirring at the speed of After the addition was completed, the reaction was continuously stirred fo...

Embodiment 2

[0042] Preparation of Antioxidant Microcapsules

[0043] Add 6g of caffeic acid to 300ml of deionized water, heat to 60°C and stir to fully dissolve to obtain a caffeic acid solution. Under a nitrogen atmosphere, add ferrous chloride solution with an equal volume concentration of 8g / L, stir and mix evenly, and then keep the reaction for 1h. Then add 4g of polyvinyl alcohol, continue to stir at a speed of 400r / min for 2h, and then perform ultrasonic treatment for 10min to obtain an emulsion. During the whole process of the reaction, adjust the pH to 7-8 with 1mol / L sodium hydroxide solution.

[0044] After stirring and mixing 24g isophorone diisocyanate, 3g 2-hexene-1,6-diol and 30g cyclohexane uniformly, the prepolymerization was carried out at 45°C for 1h to obtain a prepolymer. The prepolymer was added dropwise to the emulsion under the condition of stirring at the speed of After the addition was completed, the reaction was continuously stirred for 1 h, naturally cooled to ...

Embodiment 3

[0052] The preparation of antioxidant microcapsules, the preparation of modified titanium dioxide, and the preparation of antioxidant additives are the same as those in Example 1.

[0053] Preparation of PVC Communication Pipe

[0054] First, weigh them according to the following proportions: 115 parts of PVC, 10 parts of CPVC, 10 parts of plasticizer, 5 parts of antioxidant additives, 4 parts of stabilizer, 0.8 parts of external lubricant, 0.5 part of internal lubricant, and processing aid ACR4012 parts, ultraviolet absorber UV-3270.6 parts.

[0055] S1: Put PVC and CPVC in a high-speed mixer, heat up to 90°C, stir and mix for 5 minutes, add plasticizer SG-50, antioxidant additive, and stabilizer calcium stearate, stir and mix for 10 minutes, and add external lubricant Higher fatty acid, inner lubricant higher fatty alcohol, processing aid ACR401, ultraviolet absorber UV-327, stirred and heated to 130° C., and kept stirring for 15s to obtain mixed material 1.

[0056] S2: T...

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Abstract

The present invention relates to the technical field of communication pipes, in particular to an oxidation-resistant PVC communication pipe and a preparation method thereof. The anti-oxidation PVC communication pipe of the present invention includes the following raw materials in parts by weight: 110-120 parts of PVC, 10‑12 parts of CPVC, 8‑10 parts of plasticizer, 5‑8 parts of antioxidant additive, 2‑4 parts of stabilizer, 0.5‑1 part of external lubricant, 0.5‑1 part of internal lubricant, processing aid ACR401 1 -2 parts, ultraviolet absorber UV-327 0.5-1 part, the antioxidant additive uses modified titanium dioxide as the core, the core is covered with a polyaniline shell, and the polyaniline shell is loaded with antioxidant microcapsules , the antioxidant microcapsules use caffeic acid / iron ion complex as the capsule core, and polyurethane as the capsule skin. The anti-oxidation PVC communication pipe prepared by the present invention has good short-term and long-term anti-oxidation properties through the addition of anti-oxidation additives.

Description

technical field [0001] The invention relates to the technical field of communication pipes, in particular to an antioxidant PVC communication pipe and a preparation method thereof. Background technique [0002] With the rapid development of the communication industry, more and more communication optical cables and cables are buried underground. For a long time, the communication pipes were mainly made of cement pipes at the earliest. The advantages are low cost and mature technology. The disadvantages are long construction period, complex construction process, high maintenance cost, and easy settlement. In recent years, plastic pipes have gradually been replaced by plastic pipes. alternative. As we all know, the five general plastics in the world are: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and acrylonitrile-butadiene-styrene copolymer (ABS) resin Among them, the output of PVC is second only to polyethylene, ranking first in China ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L27/24C08L33/04C08K13/06C08K9/10C08K9/12C08K7/24C08K3/22C08K5/098B01J13/14
CPCC08L27/06B01J13/14C08L2203/18C08L2201/08C08K2003/2241C08L2205/03C08L27/24C08L33/04C08K13/06C08K9/10C08K9/12C08K7/24C08K3/22C08K5/098
Inventor 陈毅明孙东华裘杨燕傅亚斌齐国良
Owner 北方中意新材料(桐庐)有限公司
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