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Antibacterial and flame-retardant polypropylene pipe fitting and preparing method thereof

A flame retardant polypropylene and polypropylene technology is applied in the field of antibacterial and flame retardant polypropylene pipes and their preparation. , the effect of prolonging the service life

Active Publication Date: 2019-01-04
杭州联通管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic antibacterial agents have a fast sterilizing speed, and some can effectively kill and inhibit mold. However, in addition to poor safety in use, they also have problems such as poor heat resistance, easy hydrolysis, and short service life.

Method used

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  • Antibacterial and flame-retardant polypropylene pipe fitting and preparing method thereof
  • Antibacterial and flame-retardant polypropylene pipe fitting and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 compound antibacterial agent preparation one

[0033] Hollow Mesoporous SiO 2 preparation:

[0034]Add 1g of polystyrene pellets to 100ml of ammonia water, stir evenly, add 50ml of absolute ethanol, stir at room temperature for 0.5h, add dropwise 1.5ml of tetraethyl orthosilicate, stir at room temperature for 12h, centrifuge and wash 5 times , placed in an oven at 40°C to dry to obtain hollow mesoporous SiO 2 .

[0035] Polyhexamethyleneguanidine hydrochloride / SiO 2 Core-shell structure preparation:

[0036] Disperse 2 g of polyhexamethyleneguanidine hydrochloride in 80 ml of aqueous solution, and stir at room temperature for 1 hour to completely dissolve the polyhexamethyleneguanidine hydrochloride. Weigh 1g of hollow mesoporous SiO 2 Disperse in an aqueous solution of polyhexamethyleneguanidine hydrochloride, stir at room temperature for 48 hours; centrifuge the reacted solution, wash, and dry in an oven at 50°C to obtain polyhexamethyleneguanidine ...

Embodiment 2

[0039] Embodiment 2 Composite antibacterial agent prepares two

[0040] Hollow Mesoporous SiO 2 preparation:

[0041] Add 1g of polystyrene pellets to 100ml of ammonia water, stir evenly, add 50ml of absolute ethanol, stir at room temperature for 1h, add dropwise 2ml of tetraethyl orthosilicate, stir at room temperature for 12h, centrifuge, wash 5 times, place Dry in an oven at 80°C to obtain hollow mesoporous SiO 2 .

[0042] Polyhexamethyleneguanidine hydrochloride / SiO 2 Core-shell structure preparation:

[0043] Disperse 2 g of polyhexamethyleneguanidine hydrochloride in 80 ml of aqueous solution, and stir at room temperature for 1 hour to completely dissolve the polyhexamethyleneguanidine hydrochloride. Weigh 1g of hollow mesoporous SiO 2 Disperse in an aqueous solution of polyhexamethyleneguanidine hydrochloride, stir at room temperature for 36 hours; centrifuge the reacted solution, wash, and dry in an oven at 40°C to obtain polyhexamethyleneguanidine hydrochloride...

Embodiment 3

[0046] Embodiment 3 composite antibacterial agent preparation three

[0047] Hollow Mesoporous SiO 2 preparation:

[0048] Add 1g of polystyrene pellets to 100ml of ammonia water, stir evenly, add 50ml of absolute ethanol, stir at room temperature for 1h, add dropwise 1.8ml of tetraethyl orthosilicate, stir at room temperature for 12h, centrifuge and wash 6 times, Dry in an oven at 60°C to obtain hollow mesoporous SiO 2 .

[0049] Polyhexamethyleneguanidine hydrochloride / SiO 2 Core-shell structure preparation:

[0050] Disperse 2g of polyhexamethyleneguanidine hydrochloride in 100ml of aqueous solution and stir at room temperature for 2h to completely dissolve the polyhexamethyleneguanidine hydrochloride. Weigh 1g of hollow mesoporous SiO 2 Disperse in an aqueous solution of polyhexamethyleneguanidine hydrochloride, stir at room temperature for 40 hours; centrifuge the reacted solution, wash, and dry in an oven at 45°C to obtain polyhexamethyleneguanidine hydrochloride / S...

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PUM

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Abstract

The invention relates to the technical field of plastic pipe fittings, in particular to an antibacterial and flame-retardant polypropylene pipe fitting and a preparing method thereof. The pipe fittingis prepared from, by weight, 70-90 parts of polypropylene, 0.5-1.0 part of compound antibacterial agent, 1.5-3.5 parts of flame retardant, 0.3-0.8 part of antioxidant and 1.0-3.0 parts of thermal stabilizer. By selecting the proper raw materials and adding the compound antibacterial agent and the compound flame retardant, the polypropylene material with flame-retardant and antibacterial compoundperformance is obtained; meanwhile, by adding the antioxidant, the thermal stabilizer and other auxiliaries, the processing performance of the antibacterial and flame-retardant polypropylene materialcan be improved, the thermal resistance and ageing resistance of the material are improved, and the service life of the pipe fitting can be effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of plastic pipes, in particular to an antibacterial and flame retardant polypropylene pipe and a preparation method thereof. Background technique [0002] Polypropylene has good corrosion resistance, good strength, high surface hardness, surface finish, easy processing and recycling, etc. It is widely used in acid and alkali resistance equipment, environmental protection equipment, waste water and exhaust gas discharge equipment, washing towers, dust-free It is also the material of choice for manufacturing plastic water tanks. However, with the advancement of science and technology and the emphasis on safety, people have put forward new requirements for health and safety, and polypropylene pipes with flame retardant functions have emerged and developed rapidly. [0003] At present, the common flame retardant polypropylene materials are usually halogen-antimony flame retardant systems, which have both gas ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L5/08C08K13/06C08K9/10C08K7/26C08K3/36C08K5/098C08K5/134C08K5/52C08K5/3492
CPCC08L23/12C08L2201/02C08L2201/08C08L2203/18C08L5/08C08K13/06C08K9/10C08K7/26C08K3/36C08K5/098C08K5/1345C08K5/5205C08K5/3492
Inventor 赵伟章振华陈毅明孙东华
Owner 杭州联通管业有限公司
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