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

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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 propertie

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
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Example Embodiment

[0019] Example 1

[0020] Synthesis of thiol acetylated castor oil methyl ester:

[0021] The molar ratio of pentaerythritol tetrakis (3-mercaptopropionic acid) ester and acetylated castor oil methyl ester is 1:3 in the reaction flask, and 2-hydroxy-2-methylpropiophenone is added, the mass of which is 1% of the total mass of reactants After 12 hours of irradiation with a 365nm UV light source, 2-hydroxy-2-methylpropiophenone was removed by vacuum distillation to obtain mercaptoacetylated castor oil methyl ester.

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

[0023] 12g PVC, 12g mercaptoacetylated castor oil methyl ester and 1g potassium carbonate were dissolved in cyclohexanone solvent, the temperature was controlled at 60°C, the reaction was stirred for 12h to sample, and the precipitation was washed with methanol / water solution to obtain the inner plasticized PVC material. figure 1 with figure 2 These are the DSC curves of...

Example Embodiment

[0024] Example 2

[0025] Synthesis of mercapto rosin acrylate:

[0026] The molar ratio of pentaerythritol tetrakis (3-mercaptopropionic acid) and mercapto rosin propynyl ester of 1:3 is placed in the reaction flask, and 2-hydroxy-2-methylpropiophenone is added, whose mass is 1% of the total mass of the reactants. After 12 hours of irradiation with a 365nm ultraviolet light source, 2-hydroxy-2-methylpropiophenone was removed by vacuum distillation to obtain mercaptoacetylated castor oil methyl ester.

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

[0028] 12g PVC, 12g mercapto rosin propylene ester and 1g potassium carbonate were dissolved in cyclohexanone solvent, the temperature was controlled at 60°C, the reaction was stirred for 12h to sample, and the precipitate was washed with methanol / water solution to obtain the internal plasticized PVC material. figure 1 with image 3 These are the DSC curves of PVC and mercapto rosin acrylate internal pl...

Example Embodiment

[0029] Example 3

[0030] Synthesis of methyl mercaptooleate:

[0031] The molar ratio of pentaerythritol tetrakis (3-mercaptopropionic acid) and methyl mercaptooleate is placed in a reaction flask at a molar ratio of 1:3, 2-hydroxy-2-methylpropiophenone is added, and its mass is 1% of the total mass of the reactants. After 12 hours of irradiation with a 365nm ultraviolet light source, 2-hydroxy-2-methylpropiophenone was removed by vacuum distillation to obtain mercaptoacetylated castor oil methyl ester.

[0032] Preparation of internal plasticized PVC material with methyl mercaptooleate:

[0033] 12g PVC, 12g methyl mercaptooleate and 1g potassium carbonate were dissolved in cyclohexanone solvent, the temperature was controlled at 60°C, the reaction was stirred for 12h to take samples, and the precipitate was washed with methanol / water solution to obtain internal plasticized PVC material. figure 1 with Figure 4 These are the DSC curves of PVC and methyl mercaptooleate internal plast...

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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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