Preparation method of a corrosion-resistant, waterproof, and flame-retardant elastic coil

A corrosion-resistant and coiled material technology, which is applied to flat products, other household appliances, coatings, etc., can solve the problems of waterproof membrane performance degradation, interference with biological endocrine, and reproductive function, and improve processing performance and corrosion resistance. , shorten the plasticizing time, the effect of not easy to migrate

Active Publication Date: 2022-02-18
安徽喜宝高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soft PVC feels stiff and greasy, soft and poor in elasticity. The hardness of the cortex varies with the environment. The light and heat stability is poor. The plasticizers used in PVC may seep out or vaporize and migrate, which may interfere Biological endocrine, affecting reproductive function, some can increase the risk of cancer, and with the growth of time, the migration of plasticizers will cause the performance of waterproof membranes to decline

Method used

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  • Preparation method of a corrosion-resistant, waterproof, and flame-retardant elastic coil

Examples

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Embodiment 1

[0020] A method for preparing a corrosion-resistant, waterproof, and flame-retardant elastic coil, comprising the following steps:

[0021](1) In the polymerization reactor, replace the inside of the reactor with nitrogen to form an oxygen-free atmosphere. Mix 15 parts of vinyl acetate monomer, 0.1 part of initiator azobisisobutyronitrile, emulsifier dodecylbenzenesulfonate Add 0.4 parts of sodium bicarbonate and 23 parts of water into the emulsification tank for emulsification to obtain an emulsion, add the emulsion and 83 parts of vinyl chloride monomer into the polymerization tank, keep the reaction pressure at 0.4 MPa, stir evenly, raise the temperature to 80°C, and polymerize for 1 hour. Add a certain amount of sodium nitrite to ensure that the concentration of sodium nitrite in the whole system is 1.2g / mL, cool down to 75°C, stir and react, use methanol to break the emulsion, and then heat and vacuum the unreacted residual vinyl chloride mono body and demulsifier methano...

Embodiment 2

[0030] A method for preparing a corrosion-resistant, waterproof, and flame-retardant elastic coil, comprising the following steps:

[0031] (1) In the polymerization reactor, replace the inside of the reactor with nitrogen to form an oxygen-free atmosphere. Mix 12 parts of vinyl acetate monomer, 0.05 part of initiator azobisisobutyronitrile, emulsifier dodecylbenzenesulfonate Add 0.2 parts of sodium bicarbonate and 15 parts of water into the emulsification kettle for emulsification to obtain an emulsion, add the emulsion and 83 parts of vinyl chloride monomer into the polymerization kettle, keep the reaction pressure at 0.2MPa, stir evenly, raise the temperature to 75°C, and polymerize for 0.5h , add a certain amount of sodium nitrite to ensure that the concentration of sodium nitrite in the whole system is 1.2g / mL, cool down to 65°C, stir and react, use methanol to break the emulsion, and then heat and vacuum the unreacted residual vinyl chloride through a closed settling tank...

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Abstract

The invention belongs to the technical field of waterproof coiled material, in particular to a method for preparing a corrosion-resistant, waterproof and flame-retardant elastic coiled material, comprising the following steps: (1) preparing pre-dispersed vinyl acetate resin powder; (2) preparing pre-mixed paste; 3) Microwave pre-plasticization treatment; (4) Mold treatment; (5) Slush molding; The preparation method of the corrosion-resistant, waterproof, and flame-retardant elastic coil disclosed by the present invention has simple operation and high profit margin, and avoids the need to prepare coils in the past. Due to the disadvantages of high equipment cost and complex calendering and extrusion process, the prepared coil has excellent chemical resistance, acid and alkali resistance, high strength, and excellent comprehensive performance, which is higher than the national standard. High elongation, high elasticity, high tensile strength, safety and environmental protection, the use of internal plasticization and ionic liquid synergy to reduce the use of plasticizers, avoid the migration of plasticizers, and use microwave preplasticization and slush molding to prepare physical, With two chemical root resistance layers, the overall anti-root effect of the material is excellent.

Description

technical field [0001] The invention belongs to the technical field of waterproof coiled material, in particular to a method for preparing a corrosion-resistant, waterproof and flame-retardant elastic coiled material. Background technique [0002] The waterproof membrane needs to be cut according to the shape of the waterproof base layer. For the base layer with complex shape, multiple splicing is required. It is difficult to bond the overlapping parts of the waterproof membrane materials; complete and absolute sealing will become the main problem, and water leakage The hidden danger is the biggest; the protection of the waterproof membrane after construction and the maintenance after water leakage are also difficult problems. Penetrating damage at any part, degumming, glue leakage, and the waterproof function of the entire layer connected with it will all decline. If the damage and leakage cannot be found If there is a defective part, it is impossible to repair it locally, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C41/24B29C33/56C08L27/06C08L91/00C08K13/02C08K5/11C08K5/07C08K5/101C08K5/098C08K3/24C08K3/26C09D175/14B29L7/00
CPCB29C41/24B29C33/56C09D175/14C08L27/06C08K2003/262C08K2201/014C08L2201/02C08L2201/08B29L2007/002
Inventor 李振飞
Owner 安徽喜宝高分子材料有限公司
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