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Environment-friendly cross-linked polyvinyl chloride waterproof coiled material and preparation method thereof

A cross-linked polyvinyl chloride and waterproof membrane technology, which is applied in the field of waterproof membranes, can solve problems such as low tensile strength, poor durability, and poor wear resistance, and achieve improved weather resistance, chemical resistance, and heat treatment dimensional change rate Small, to avoid the effect of gel effect

Inactive Publication Date: 2018-10-23
重庆科顺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyvinyl chloride waterproof membrane has become an important branch of polymer waterproof membrane due to its softness, low temperature resistance, elasticity, and weldability. Dibutyl phthalate (DOP) and dibutyl phthalate (DBP) are used as plasticizers and heavy metal heat stabilizers such as lead salts. Lead salt heat stabilizers are characterized by toxicity, and long-term use will discolor PVC waterproof membranes.
In addition, a prominent disadvantage of small molecule plasticizers is that they are not environmentally friendly, have poor durability, are easy to migrate and precipitate, and have poor low temperature resistance, which seriously affects the life and performance of PVC waterproof membranes.
Another disadvantage of PVC waterproof membrane is low tensile strength, poor wear resistance, easy to cause aging, affect the use of waterproof membrane, need to be replaced frequently, which is not conducive to use and the cost is huge

Method used

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  • Environment-friendly cross-linked polyvinyl chloride waterproof coiled material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] An environment-friendly cross-linked polyvinyl chloride waterproof membrane, the preparation process of which is as follows:

[0051](1) Kneading: 10 parts of polyvinyl chloride powder (SG-3), 10 parts of ethylene-vinyl acetate (Va=60%), 5 parts of dipropylene glycol dibenzoate (DPGDB), 5 parts of vinyl triethoxy 2 parts of base silane, 1 part of antioxidant 1010, 1 part of antioxidant 168, 5 parts of dimethyl tin, 10 parts of clay, and 1 part of light stabilizer 2020 were added to the high-speed kneader and kneaded, and the temperature in the kneader was controlled at 85°C, the kneading time is 5 minutes; 10 parts of nano-zinc oxide and 5 parts of silane coupling agent KH-550 are evenly added into the high-speed kneader, and the kneading temperature in the kneader is kept at 85°C, and kneading at constant temperature for 1 minute, the kneading process The internal pressure of the middle kneader is 0.4±0.1MPa;

[0052] (2) Extrusion cross-linking: After mixing evenly, ...

Embodiment 2

[0055] An environment-friendly cross-linked polyvinyl chloride waterproof membrane, the preparation process of which is as follows:

[0056] (1) Kneading: 20 parts of polyvinyl chloride powder (SG-2), 30 parts of ethylene-carbon monoxide copolymer (ECO), 5 parts of dipropylene glycol dibenzoate (DPGDB), 2 parts of vinyl triethoxysilane 10102 parts, 10102 parts of antioxidant, 1 part of antioxidant 168, 3 parts of dimethyl tin, 2 parts of Ca / Zn composite heat stabilizer, 20 parts of clay, 2.5 parts of light stabilizer 2020 were added to the high-speed kneader and kneaded, The temperature in the kneader is controlled at 85°C, and the kneading time is 5 minutes; 10 parts of nano zinc oxide and 1 part of titanate coupling agent NDZ-201 are evenly added to the high-speed kneader, and the kneading temperature in the kneader is kept at 85°C , kneading at constant temperature for 1 minute, and the pressure inside the kneader during the kneading process is 0.4±0.1MPa;

[0057] (2) Ext...

Embodiment 3

[0060] An environment-friendly cross-linked polyvinyl chloride waterproof membrane, the preparation process of which is as follows:

[0061] (1) Kneading: 35 parts of polyvinyl chloride powder (SG-3), 30 parts of ethylene-vinyl acetate (Va=60%), 10 parts of dipropylene glycol dibenzoate (DPGDB), 10 parts of vinyl triethoxy 1.5 parts of base silane, 10102 parts of antioxidant, 1 part of antioxidant 168, 5 parts of dioctyltin, 25 parts of clay, and 3 parts of light stabilizer 2020 were added to the high-speed kneader and kneaded. The temperature in the kneader was controlled at 85 ° C. The kneading time is 5 minutes; 10 parts of nano-zinc oxide and 3 parts of silane coupling agent KH-560 are evenly added to the high-speed kneader, and the kneading temperature in the kneader is kept at 85°C, and kneading at a constant temperature for 1 minute. During the kneading process, the kneader The internal pressure is 0.4±0.1MPa;

[0062] (2) Extrusion cross-linking: After mixing evenly, ...

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Abstract

The invention discloses an environment-friendly cross-linked polyvinyl chloride waterproof coiled material and a preparation method thereof. The environment-friendly cross-linked polyvinyl chloride waterproof coiled material is prepared from the following components in parts by weight: 5-35 parts of polyvinyl chloride powder, 2-30 parts of high polymer plasticizer, 5-25 parts of secondary plasticizer, 0.1-5 parts of cross-linking agent, 1-10 parts of cross-linking auxiliary, 0.1-10 parts of lubricant, 0.1-5 parts of antioxidant, 1-8 parts of tin heat stabilizer and / or zinc heat stabilizer, 1-10 parts of nanometer active agent, 10-60 parts of filler, 1-5 parts of light stabilizer and 1-5 parts of chemical coupling agent. The environment-friendly cross-linked polyvinyl chloride waterproof coiled material has the advantages of being high in tensile strength and elongation at break, excellent in ageing-resistant performance, waterproofness and low temperature resistance, environmentally-friendly and non-toxic.

Description

technical field [0001] The invention relates to the technical field of waterproof coiled material, in particular, the invention relates to an environment-friendly cross-linked polyvinyl chloride waterproof coiled material and a preparation method thereof. Background technique [0002] Polyvinyl chloride, referred to as PVC, is a thermoplastic resin obtained by the homopolymerization of vinyl chloride monomer under the action of an initiator. Polyvinyl chloride waterproof membrane has become an important branch of polymer waterproof membrane due to its softness, low temperature resistance, elasticity, and weldability. Esters (DOP) and dibutyl phthalate (DBP) are used as plasticizers and heavy metal heat stabilizers such as lead salts. Lead salt heat stabilizers are characterized by toxicity, and long-term use will cause PVC waterproof membranes to change color. In addition, a prominent disadvantage of small molecule plasticizers is that they are not environmentally friendly,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L31/04C08L73/00C08K3/34C08K5/14C08K3/22C08K5/5425
CPCC08K2003/2296C08K2201/011C08L27/06C08L2201/08C08L31/04C08K3/346C08K5/14C08K3/22C08K5/5425C08L73/00
Inventor 胡全超龚兴宇曹昌义肖梁林焕章吴海洋黄思墨
Owner 重庆科顺新材料科技有限公司
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