Production process of PVC decorative film

Abstract

The invention discloses a production process of a PVC decorative film. The production process comprises the following steps: heating PVC resin to 50-90 DEG C to decompose hydrogen chloride, adding epoxy soybean oil and an organic tin stabilizer, carrying out ring-opening reaction to make the PVC resin positively charged, enhancing the electron deficiency, endowing the material with excellent spacecharges, enhancing the migration resistance and thermal stability of the material, and reacting with triglyceride trimellitate to obtain the PVC decorative film. The excellent volume resistivity is increased, the synergistic effect with existing space charges of the material is achieved, so that the insulating property of the material is better improved, the excellent ultraviolet irradiation resistance is improved, the environment is protected, and meanwhile, the subtle balance of the electrical property, the mechanical property and the stability is achieved; the finally prepared PVC decorative film is particularly outstanding when applied to the fields of electric appliance wrapping and decoration, and the material is more uniform after being heated twice by a reaction kettle and an extruder.

Description

technical field

[0001] The invention belongs to the technical field of PVC film processing, in particular to a production process of a PVC decorative film. Background technique

[0002] Polyvinyl chloride, referred to as PVC (Polyvinyl chloride) in English, is an initiator of vinyl chloride monomer (VCM) in peroxides, azo compounds and other initiators; or polymerized by free radical polymerization mechanism under the action of light and heat formed polymer. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins.

[0003] PVC is a white powder with amorphous structure, which has poor stability to light and heat. When exposed to sunlight for a long time or above 100°C, it will decompose to produce hydrogen chloride, which will further autocatalyze decomposition, causing discoloration and rapid decline in physical and mechanical properties. .

[0004] PVC flexible film has high molecular weight and good mechanical pro...

Examples

Embodiment 1

[0027] A production process of PVC decorative film, comprising the following steps:

[0028] S1 raw material preparation, including the following components by mass, 100 parts of PVC resin, 5 parts of epoxidized soybean oil, 9 parts of triglyceride trimellitate, and 3 parts of organic tin stabilizer;

[0029] S2 The above-mentioned raw materials are weighed according to the mass fraction, the PVC resin is preheated to 50℃~90℃, epoxidized soybean oil and organic tin stabilizer are added, the temperature is raised to 130℃~160℃ and stirred, and then triglyceride trimellitate is added to react to obtain a polymer melt;

[0030] In S3, the polymer melt prepared in S2 is added to the extruder under the condition of 160 ℃~180 ℃ for extruding, and is calendered by a calender to obtain a PVC sheet;

[0031] In S4, the PVC sheet prepared in S3 is injected by an injection molding machine, and then cooled in a pure water pool and then wound up to obtain a PVC decorative film. After testi...

Embodiment 2

[0033] A production process of PVC decorative film, comprising the following steps:

[0034] S1 raw material preparation, including the following components by mass, 100 parts of PVC resin, 5 parts of epoxidized soybean oil, 9 parts of triglyceride trimellitate, 3 parts of organic tin stabilizer, 1 part of barium stearate and hard Zinc fatty acid 0.5 part;

[0035] S2 The above-mentioned raw materials are weighed according to the mass fraction, the PVC resin is preheated to 50℃~90℃, epoxidized soybean oil and organotin stabilizer are added, the temperature is raised to 130℃~160℃ and stirred, and then triglyceride trimellitate is added, Add barium stearate and zinc stearate to react to obtain polymer melt;

[0036] In S3, the polymer melt prepared in S2 is added to the extruder under the condition of 160 ℃~180 ℃ for extruding, and is calendered by a calender to obtain a PVC sheet;

[0037] S4 injects the PVC sheet prepared in S3 with an injection molding machine, and then coo...

Embodiment 3

[0039] A production process of PVC decorative film, comprising the following steps:

[0040] S1 raw material preparation, including the following components by mass, 100 parts of PVC resin, 5 parts of epoxidized soybean oil, 9 parts of triglyceride trimellitate, and 3 parts of organic tin stabilizer;

[0041] S2' The above raw materials are weighed by mass fraction, the PVC resin is preheated to 70°C, epoxidized soybean oil and organotin stabilizer are added, and after stirring for 5 to 10 minutes, the temperature is raised to 130°C to 160°C and stirred, and then three trimellitic acid is added. Glycerides are reacted to obtain polymer melts;

[0042] S3, adding the polymer melt prepared in S2 into the extruder under the condition of 160 ℃~180 ℃ and extruding, and calendering and forming by a calender to obtain a PVC sheet;

[0043] S4 injects the PVC sheet prepared in S3 with an injection molding machine, and then cools it in a pure water pool and then winds it up to obtain ...

technical field

[0001] The invention belongs to the technical field of PVC film processing, in particular to a production process of a PVC decorative film. Background technique

[0002] Polyvinyl chloride, referred to as PVC (Polyvinyl chloride) in English, is an initiator of vinyl chloride monomer (VCM) in peroxides, azo compounds and other initiators; or polymerized by free radical polymerization mechanism under the action of light and heat formed polymer. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins.

[0003] PVC is a white powder with amorphous structure, which has poor stability to light and heat. When exposed to sunlight for a long time or above 100°C, it will decompose to produce hydrogen chloride, which will further autocatalyze decomposition, causing discoloration and rapid decline in physical and mechanical properties. .

[0004] PVC flexible film has high molecular weight and good mechanical pro...

Examples

Embodiment 1

[0027] A production process of PVC decorative film, comprising the following steps:

[0028] S1 raw material preparation, including the following components by mass, 100 parts of PVC resin, 5 parts of epoxidized soybean oil, 9 parts of triglyceride trimellitate, and 3 parts of organic tin stabilizer;

[0029] S2 The above-mentioned raw materials are weighed according to the mass fraction, the PVC resin is preheated to 50℃~90℃, epoxidized soybean oil and organic tin stabilizer are added, the temperature is raised to 130℃~160℃ and stirred, and then triglyceride trimellitate is added to react to obtain a polymer melt;

[0030] In S3, the polymer melt prepared in S2 is added to the extruder under the condition of 160 ℃~180 ℃ for extruding, and is calendered by a calender to obtain a PVC sheet;

[0031] In S4, the PVC sheet prepared in S3 is injected by an injection molding machine, and then cooled in a pure water pool and then wound up to obtain a PVC decorative film. After testi...

Embodiment 2

[0033] A production process of PVC decorative film, comprising the following steps:

[0034] S1 raw material preparation, including the following components by mass, 100 parts of PVC resin, 5 parts of epoxidized soybean oil, 9 parts of triglyceride trimellitate, 3 parts of organic tin stabilizer, 1 part of barium stearate and hard Zinc fatty acid 0.5 part;

[0035] S2 The above-mentioned raw materials are weighed according to the mass fraction, the PVC resin is preheated to 50℃~90℃, epoxidized soybean oil and organotin stabilizer are added, the temperature is raised to 130℃~160℃ and stirred, and then triglyceride trimellitate is added, Add barium stearate and zinc stearate to react to obtain polymer melt;

[0036] In S3, the polymer melt prepared in S2 is added to the extruder under the condition of 160 ℃~180 ℃ for extruding, and is calendered by a calender to obtain a PVC sheet;

[0037] S4 injects the PVC sheet prepared in S3 with an injection molding machine, and then coo...

Embodiment 3

[0039] A production process of PVC decorative film, comprising the following steps:

[0040] S1 raw material preparation, including the following components by mass, 100 parts of PVC resin, 5 parts of epoxidized soybean oil, 9 parts of triglyceride trimellitate, and 3 parts of organic tin stabilizer;

[0041] S2' The above raw materials are weighed by mass fraction, the PVC resin is preheated to 70°C, epoxidized soybean oil and organotin stabilizer are added, and after stirring for 5 to 10 minutes, the temperature is raised to 130°C to 160°C and stirred, and then three trimellitic acid is added. Glycerides are reacted to obtain polymer melts;

[0042] S3, adding the polymer melt prepared in S2 into the extruder under the condition of 160 ℃~180 ℃ and extruding, and calendering and forming by a calender to obtain a PVC sheet;

[0043] S4 injects the PVC sheet prepared in S3 with an injection molding machine, and then cools it in a pure water pool and then winds it up to obtain ...

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