Environment-friendly polyvinyl chloride resin composition and preparation method thereof

A technology for polyvinyl chloride resin and composition, which is applied in the field of environment-friendly polyvinyl chloride resin composition and its preparation, can solve the problems of ecological environment pollution of petroleum, non-biodegradation, poor toughness, etc., and achieves improved toughness and melt flow. The effect of the properties, the preparation method is simple

Active Publication Date: 2014-02-12
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The plasticizer in this system is less harmful to the human body, but the dosage is large
[0004] (2) Poor toughness: PVC resin has notch sensitivity, and its notched impact strength is about 3KJ / m 2 , cannot be used as structural material
[0005] (3) Poor processability of PVC: it is usually necessary to add a large amount of plasticizer to increase its melt flow rate
[0006] PVC resin and its traditional plasticizers and tougheners are mostly derived from petroleum and are not biodegradable, so their production and use cause certain pollution to the ecological environment and are dependent on petroleum
In addition, the small molecule plasticizers (such as phthalates) used in PVC resin products have migration problems, which are harmful to the human body and the environment, which seriously restricts the application of PVC in certain fields, such as children's toys.
At present, there are few reports on the research and technology of PVC resin modified by bio-based and biodegradable polyester materials at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 100 parts of polyvinyl chloride (PVC-SG5, product of Xinjiang Tianye Group Co., Ltd.), 3-hydroxybutyrate-4-hydroxybutyrate copolymer (the molar content of 4-hydroxybutyrate monomer is 10%, Shenzhen Yike Man company product) 30 parts, methyl mercaptide tin heat stabilizer (NX-128, Nantong Advan Chemical Co., Ltd. product) 4 parts and epoxy soybean oil (Leling City Fuxing Plastic Auxiliary Factory product) 4 parts, Mix uniformly in a high-speed mixer to obtain a premixture, and blend the premixture in a Harker internal mixer for 4 minutes to obtain an environment-friendly polyvinyl chloride resin composition. The rotating speed of the rotor is 50 rpm, and the temperature is 160°C. The polyvinyl chloride resin composition is pressed into a sheet by a flat vulcanizer for tensile and impact tests, and the tensile strength of the environmentally friendly polyvinyl chloride resin composition sheet measured is 38MPa, and the elongation at break is 250 %, the notched impact str...

Embodiment 2

[0022] 100 parts of polyvinyl chloride (PVC-SG5, product of Xinjiang Tianye Group Co., Ltd.), 3-hydroxybutyrate-4-hydroxybutyrate copolymer (the molar content of 4-hydroxybutyrate monomer is 10%, Shenzhen Yike Man company product) 40 parts, calcium zinc heat stabilizer (CZ-7311, product of Huizhou Guangxu Plastic Co., Ltd.) Mix uniformly in the medium to obtain a premix, and mix the premix for 5 minutes in a Haake internal mixer to obtain an environment-friendly polyvinyl chloride resin composition. The rotor speed is 40rpm, and the temperature is 160°C. The polyvinyl chloride resin composition is pressed into a sheet by a flat vulcanizer for tensile and impact tests, and the tensile strength of the environmentally friendly polyvinyl chloride resin composition sheet measured is 45MPa, and the elongation at break is 300 %, the notched impact strength is 8.5kJ / m 2 , The melt index is 4.0g / 10min.

Embodiment 3

[0024] 105 parts of polyvinyl chloride (PVC-SG5, product of Xinjiang Tianye Group Co., Ltd.), 3-hydroxybutyrate-4-hydroxybutyrate copolymer (the molar content of 4-hydroxybutyrate monomer is 13%, Shenzhen Yike Man company product) 40 parts, calcium zinc heat stabilizer (CZ-7311, Huizhou Guangxu Plastic Co., Ltd. product) 4 parts and epoxy soybean oil (Leling City Fuxing Plastic Auxiliary Factory product) 6 parts, in high-speed mixer Mix uniformly in the medium to obtain a premix, and mix the premix for 3.5 minutes in a Haake internal mixer to obtain an environment-friendly polyvinyl chloride resin composition. The rotating speed of the rotor is 60rpm, and the temperature is 160°C. The polyvinyl chloride resin composition is pressed into a sheet by a flat vulcanizer for tensile and impact tests, and the tensile strength of the environmentally friendly polyvinyl chloride resin composition sheet measured is 37MPa, and the elongation at break is 270 %, notched impact strength is ...

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Abstract

The invention discloses an environment-friendly polyvinyl chloride resin composition and a preparation method thereof. The environment-friendly polyvinyl chloride resin composition is prepared from the following raw materials in parts by weight: 80-100 parts of polyvinyl chloride resin, 20-80 parts of ester polymer, 1-5 parts of thermal stabilizer and 1-10 parts of auxiliary thermal stabilizer. The environment-friendly polyvinyl chloride resin composition obtained according to the preparation method can be used for obviously improving the toughness and melt fluidity of the polyvinyl chloride resin. The polyvinyl chloride resin composition is environment-friendly and has superior comprehensive performance; the preparation method of the composition is simple and is easy for realizing industrialization.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an environment-friendly polyvinyl chloride resin composition and a preparation method thereof. Background technique [0002] Polyvinyl chloride, referred to as PVC, is a thermoplastic resin polymerized from vinyl chloride. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as polyvinyl chloride resins, namely PVC resins. PVC is the second most common resin in the world after polyethylene, and is widely used in pipes, rods, films, insulating materials, building materials and other fields. However, there are still many defects in PVC resin itself, which restrict its molding process and application in certain fields: [0003] (1) Poor thermal stability: Pure PVC is prone to decomposition during melt processing, causing discoloration and performance degradation. Therefore, it is necessary to add a stabilizer to improve its thermal stabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L67/02C08L67/04C08K5/1515B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 马丕明蒋元章陈明清东为富许允生徐鹏武
Owner JIANGNAN UNIV
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