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Sulfydryl biomass monomer internal plasticization PVC (Polyvinyl Chloride) material and preparation method thereof

A PVC material and biomass technology, applied in mercaptan preparation, organic chemistry, etc., can solve problems such as poor plasticization efficiency, and achieve the effects of increasing commercial value, lowering glass transition temperature, and excellent volatility resistance

Active Publication Date: 2018-11-06
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, although vegetable oil and its epoxy plasticizer, citrate plasticizer, phosphorus and silicon-containing vegetable oil-based flame-retardant plasticizer, and epoxy acetylated cardanol and other plasticizers have excellent plasticizing properties, Easy to be extracted by solvents; polymeric glycerides and castor oil-based polyester plasticizers, soybean oil-based polyester plasticizers, rice fatty acid polyester and other polyester plasticizers have good durability, but poor plasticizing efficiency

Method used

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  • Sulfydryl biomass monomer internal plasticization PVC (Polyvinyl Chloride) material and preparation method thereof
  • Sulfydryl biomass monomer internal plasticization PVC (Polyvinyl Chloride) material and preparation method thereof
  • Sulfydryl biomass monomer internal plasticization PVC (Polyvinyl Chloride) material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Synthesis of mercaptoacetylated castor oil methyl ester:

[0021] Pentaerythritol tetrakis (3-mercaptopropionate) ester and acetylated castor oil methyl ester molar ratio 1:3 are placed in reaction bottle, add 2-hydroxyl-2-methyl propiophenone, its quality is 1% of the total mass of reactant , after irradiating with a 365nm ultraviolet light source for 12h, 2-hydroxy-2-methylpropiophenone was removed by vacuum distillation to obtain mercaptoacetylated castor oil methyl ester.

[0022] Preparation of plasticized PVC material in mercaptoacetylated castor oil methyl ester:

[0023] 12g of PVC, 12g of mercaptoacetylated castor oil methyl ester and 1g of potassium carbonate were dissolved in cyclohexanone solvent, the temperature was controlled at 60°C, the reaction was stirred for 12 hours and samples were taken, and the precipitate was washed and precipitated with methanol / water solution to obtain an internally plasticized PVC material. figure 1 and figure 2 DSC curves ...

Embodiment 2

[0025] Synthesis of mercaptorosin propylene ester:

[0026] Pentaerythritol tetrakis (3-mercaptopropionate) ester and mercaptorosin propynyl ester molar ratio 1:3 are placed in reaction flask, add 2-hydroxyl-2-methylpropiophenone, its quality is 1% of reactant total mass, After irradiating with a 365 nm ultraviolet light source for 12 h, 2-hydroxy-2-methylpropiophenone was removed by vacuum distillation to obtain mercaptoacetylated castor oil methyl ester.

[0027] Preparation of plasticized PVC material in mercaptorosin propylene ester:

[0028] 12g of PVC, 12g of mercaptorosin propylene ester and 1g of potassium carbonate were dissolved in cyclohexanone solvent, the temperature was controlled at 60°C, the reaction was stirred for 12 hours to sample, and methanol / water solution was used to wash and precipitate to obtain an internally plasticized PVC material. figure 1 and image 3 DSC curves of PVC and mercaptorosin propylene ester plasticized PVC materials, respectively. ...

Embodiment 3

[0030] Synthesis of methyl mercaptooleate:

[0031] Pentaerythritol tetrakis (3-mercaptopropionate) ester and methyl mercapto oleate molar ratio 1:3 are placed in reaction flask, add 2-hydroxyl-2-methyl propiophenone, its quality is 1% of reactant total mass, After irradiating with a 365 nm ultraviolet light source for 12 h, 2-hydroxy-2-methylpropiophenone was removed by vacuum distillation to obtain mercaptoacetylated castor oil methyl ester.

[0032] Preparation of plasticized PVC material in methyl mercapto oleate:

[0033]12g of PVC, 12g of methyl mercaptooleate and 1g of potassium carbonate were dissolved in cyclohexanone solvent, the temperature was controlled at 60°C, the reaction was stirred for 12 hours, samples were taken, and methanol / water solution was used to wash and precipitate the inner plasticized PVC material. figure 1 and Figure 4 are the DSC curves of PVC and methyl mercaptooleate internally plasticized PVC materials, respectively. The DSC curve shows t...

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Abstract

The invention discloses a sulfydryl biomass monomer internal plasticization PVC (Polyvinyl Chloride) material and a preparation method thereof. The preparation method comprises the following steps: carrying out a direct substitution reaction on a sulfydryl biomass monomer and PVC, precipitating with a 10wt.% methanol solution, washing polymer precipitate, and drying, thereby obtaining the sulfydryl biomass monomer internal plasticization PVC material, wherein the reaction temperature is 40-160 DEG C, and the reaction time is 0.1-36 hours. The glass-transition temperature of the prepared internal plasticization PVC material is remarkably reduced, and in addition, good solvent extraction resistance and volatilization resistance can be achieved.

Description

technical field [0001] The invention belongs to the technical field of PVC materials, and specifically relates to a series of mercapto biomass-based monomers used as internal plasticizers to synthesize internally plasticized PVC materials and a preparation method thereof. Background technique [0002] The plastics industry is currently one of the fastest growing industries in the world. As one of the most widely consumed general-purpose plastics in the world, polyvinyl chloride (PVC) is widely used in the fields of industry and agriculture, transportation, construction, food, medical and national defense. Plasticizer is an indispensable plastic additive for PVC products, and it is also the variety with the largest output among all chemical additives, which plays a decisive role in promoting the development of PVC and other products. In 2014, my country's plasticizer production capacity was 4.73 million tons per year, and the output was 2.74 million tons. It is the largest p...

Claims

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Application Information

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IPC IPC(8): C08F8/34C08F114/06C07C319/02C07C323/52C07C323/54C07C323/55
CPCC07C319/02C07C2603/26C08F8/34C08F114/06C07C323/52C07C323/54C07C323/55
Inventor 周永红贾普友张猛胡立红冯国东宋飞
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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