Polyvinyl chloride compound for industrial pipeline and preparation method thereof

A technology for polyvinyl chloride and industrial pipes, applied in the field of polymer compound modification, can solve the problems of poor long-term stability and decreased mechanical properties of PVC pipes, and achieve the effects of prolonging service life, good ultraviolet shielding and reducing aging rate.

Active Publication Date: 2022-05-27
昆山淼挺管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the long-term stability of traditional powder calcium-zinc stabilizers on the market is poor, which will lead to a significant decline in the mechanical properties of PVC pipes after a period of use

Method used

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  • Polyvinyl chloride compound for industrial pipeline and preparation method thereof
  • Polyvinyl chloride compound for industrial pipeline and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] Preparation of modified calcium-zinc stabilizers:

[0028] KH570 was dissolved in anhydrous acetone and stirred evenly to form a KH570-acetone solution with a concentration of 35wt.%, and then added a hydrotalline calcium-zinc stabilizer powder (trade name QF180) and ultrasonically dispersed for 15-20min, and the silanized calcium-zinc stabilizer powder was obtained by vacuum filtering and low temperature drying (30-40 °C); among which the mass ratio of the hydrotalline calcium-zinc stabilizer powder to KH570 was 1:5.

[0029] The calcium silylated calcium zinc stabilizer powder was placed in a part of the toluene solvent (60wt.% of the total amount of toluene solvent, and the amount of toluene solvent was 4 times the total amount of the silylated calcium zinc stabilizer powder and the total amount of hydroxyl functional monomers) and stirred to form a silylated calcium zinc stabilizer-toluene mixture, and then the heat initiator (the heat initiator is AIBN, the dosage is 1...

specific Embodiment

[0033] Specific embodiments: preparation of polyvinyl chloride composite 1-7.

[0034]According to the dosage of the formula described in Table 1 below, the polyvinyl chloride composite is prepared by the following preparation process.

[0035] Preparation process A: according to the ratio described in Table 1 to weigh each component, and then the polyvinyl chloride resin, chlorinated polyvinyl chloride resin and modified calcium and zinc stabilizer was added to the high-speed mixer, and then the hot mixing was uniform at 50-60 °C; then the calcium carbonate and modified titanium dioxide type additives were added to it at 80 °C-85 °C after hot mixing uniformly for 1-2h; finally, when the material was cooled to room temperature, lubricants, antistatic agents, pigments, antioxidants and PVC processing aids were added and mixed evenly, The polyvinyl chloride composite for industrial pipelines was obtained.

[0036] The following specific embodiments and proportional polyvinyl chlorid...

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Abstract

The invention discloses a polyvinyl chloride compound for an industrial pipeline and a preparation method of the polyvinyl chloride compound, and belongs to the technical field of polymer compound modification. The compound comprises PVC, CPVC, calcium carbonate, a modified calcium-zinc stabilizer, a modified titanium dioxide type additive, a lubricant, an antistatic agent, a pigment, an antioxidant and a PVC processing aid, wherein the modified calcium-zinc stabilizer is prepared by carrying out surface modification on hydrotalcite type calcium-zinc stabilizer powder through an unsaturated silane coupling agent and then copolymerizing the hydrotalcite type calcium-zinc stabilizer powder with a hydroxyl functional monomer; the modified titanium dioxide type additive is prepared by modifying the surface of rutile type titanium dioxide powder with monohydroxybenzoic acid; and the compound is mixed at low temperature and then uniformly mixed at 85-85 DEG C to obtain the final compound. The preparation method is simple, and the prepared compound has the characteristics of excellent mechanical property and high long-term stability, and is suitable for industrial pipelines.

Description

Technical field [0001] The present invention relates to a polyvinyl chloride composite and a preparation method thereof, in particular to a polyvinyl chloride composite for industrial pipelines and a preparation method thereof, belonging to the field of polymer compound modification technology. Background [0002] PVC material because of its light material, flame retardant and acid and alkali resistance, low price, easy installation and other advantages, has gradually replaced the use of metal pipes, especially in industrial production and other fields, PVC pipe applications are more extensive. In the field of industrial production, according to the specific application scenarios, the requirements for pvc pipe performance are also different, such as water supply pipes need to have good water pressure resistance, such as power cable laying pipes need to have good electrical insulation properties, etc., but no matter what kind of application scenarios the pipe needs to have good me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L27/24C08K3/22C08K3/26C08K9/04
CPCC08L27/06C08K2003/2241C08K2003/265C08K2201/006C08K2201/005C08L2203/18C08L27/24C08K3/22C08K3/26C08K9/08C08K9/04Y02A20/20
Inventor 李民章殿安陆伟
Owner 昆山淼挺管业有限公司
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