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Plasticizer-migration-resistant PVC and preparation method thereof

A technology resistant to plasticizers and lubricants, applied in the field of plasticizer-resistant PVC and its preparation, can solve the problems of high incidence of cancer, high carcinogenicity, etc., and achieve improved anti-ultraviolet effect and enhanced anti-oxidation ability, prolonging the effect of anti-oxidant aging

Inactive Publication Date: 2020-03-24
台州联成新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing plasticizers generally have high carcinogenicity, which is also an important reason for the high incidence of cancer in the country in recent years.

Method used

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  • Plasticizer-migration-resistant PVC and preparation method thereof
  • Plasticizer-migration-resistant PVC and preparation method thereof
  • Plasticizer-migration-resistant PVC and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method for PVC resistant to plasticizer migration, mainly comprising the steps:

[0037] Step 1: Weigh 100Kg PVC, 30-80Kg pentaerythritol tetraester, 3-5Kg heat stabilizer, 1-2Kg processing aid, 1-50Kg nano calcium carbonate, 0.6-1.5Kg lubricant, 0.3-0.6Kg antioxidant And 0.2~0.5Kg anti-ultraviolet agent;

[0038] Step 2: Add the PVC, pentaerythritol tetraester, heat stabilizer, processing aid, nano-calcium carbonate, lubricant, antioxidant and anti-ultraviolet agent into the screw extruder in sequence, and add the raw material total Measure 1% di-tert-butyl peroxide for melt extrusion, the temperature of the screw extruder at the feeding place is controlled at 180-200°C, and the temperature of the extrusion head of the screw extruder is controlled at 150-160°C;

[0039] Step 3: after being extruded, cooling with cooling water, and then shearing and granulating to obtain finished PVC.

[0040] In this process, the screw extruder is in a vacuum state, and...

Embodiment 2

[0044] A preparation method for PVC resistant to plasticizer migration, mainly comprising the steps:

[0045] Step 1: Weigh 100Kg PVC, 30-80Kg pentaerythritol tetraester, 3-5Kg heat stabilizer, 1-2Kg processing aid, 1-50Kg nano calcium carbonate, 0.6-1.5Kg lubricant, 0.3-0.6Kg antioxidant And 0.2~0.5Kg anti-ultraviolet agent;

[0046]Step 2: Add the PVC, pentaerythritol tetraester, heat stabilizer, processing aid, nano-calcium carbonate, lubricant, antioxidant and anti-ultraviolet agent into the screw extruder in sequence, and add the raw material total Measure 1% diisopropyl peroxydicarbonate for melt extrusion, the temperature of the screw extruder at the feeding place is controlled at 180-200°C, and the temperature of the extrusion head of the screw extruder is controlled at 150-160°C ;

[0047] Step 3: after being extruded, cooling with cooling water, and then shearing and granulating to obtain finished PVC.

[0048] In this process, the screw extruder is in a vacuum st...

Embodiment 3

[0051] A preparation method for PVC resistant to plasticizer migration, mainly comprising the steps:

[0052] Step 1: Weigh 100Kg PVC, 30-80Kg pentaerythritol tetraester, 3-5Kg heat stabilizer, 1-2Kg processing aid, 1-50Kg nano calcium carbonate, 0.6-1.5Kg lubricant, 0.3-0.6Kg antioxidant And 0.2~0.5Kg anti-ultraviolet agent;

[0053] Step 2: Add the PVC, pentaerythritol tetraester, heat stabilizer, processing aid, nano-calcium carbonate, lubricant, antioxidant and anti-ultraviolet agent into the screw extruder in sequence, and add the raw material total Measure 1% benzoyl peroxide for melt extrusion, the temperature of the screw extruder at the feeding place is controlled at 180-200°C, and the temperature of the extrusion head of the screw extruder is controlled at 150-160°C;

[0054] Step 3: after being extruded, cooling with cooling water, and then shearing and granulating to obtain finished PVC.

[0055] In this process, the screw extruder is in a vacuum state, and the v...

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Abstract

The invention discloses PVC resistant to plasticizer migration, belonging to the field of PVC production. The PVC resistant to plasticizer migration mainly comprises the following components in partsby mass: 100 parts of PVC, 30-80 parts of pentaerythritol tetraester, 3-5 parts of a heat stabilizer, 1-2 parts of a processing aid, 1-50 parts of nanometer calcium carbonate, 0.6-1.5 parts of a lubricant, 0.3-0.6 part of an antioxidant and 0.2-0.5 part of an anti-ultraviolet agent. According to such a technical scheme, pentaerythritol tetraester is selected as a plasticizer and can easily form ahydrogen bond with PVC, so migration of the pentaerythritol tetraester can be effectively inhibited; meanwhile, the nanometer calcium carbonate has relatively strong adsorption capacity and can be used for firmly adsorbing the pentaerythritol tetraester and other raw materials, so the migration of the pentaerythritol tetraester is favorably inhibited.

Description

technical field [0001] The invention relates to the field of modified PVC materials, in particular to PVC resistant to migration of plasticizers and a preparation method thereof. Background technique [0002] Polyvinyl chloride, referred to as PVC in English, is a polymer formed by the polymerization of vinyl chloride monomers in peroxides, azo compounds and other initiators; or under the action of light and heat according to the mechanism of free radical polymerization. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. [0003] Since the hardness of PVC is generally relatively high, it is not easy to process. For this reason, most PVC manufacturers will add various plasticizers in the PVC production process to increase the plasticity of PVC resin molecules, making it more flexible and easy to process. [0004] However, when PVC is added with a plasticizer, most of the plasticizer will easily migrate out of PVC...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/30C08K5/103C08K3/26C08K5/524C08K3/22C08K5/132C08K5/101C08K13/02
CPCC08K2003/2241C08K2003/265C08K2201/011C08K2201/014C08L27/06C08L2201/08C08L23/30C08K5/103C08K3/26C08K5/524C08K3/22C08K5/132C08K5/101C08K13/02
Inventor 韦广华
Owner 台州联成新材料有限公司
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