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Preparation method for PVC photoluminescence soft film by using light-emitting composite heat stabilizer

A composite heat stabilizer and soft film technology, applied in the field of polymers, can solve problems such as non-lubricity, toxicity, environmental protection, and reduced dosage, and achieve the effects of increasing nutritional content, early-maturing nutritional content, and strengthening photosynthesis

Inactive Publication Date: 2013-02-27
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lead salts such as tribasic lead sulfate and dibasic lead phosphite are the earliest and most widely used heat stabilizers. They have excellent thermal stability and low price, but they are toxic, not environmentally friendly, and non-lubricating. properties, and its dosage is gradually shrinking; organotin heat stabilizers have good thermal stability, weather resistance and transparency, but their high cost restricts the wide application of organotin heat stabilizers in the PVC field; metal soaps It is mainly calcium / zinc soap system. This kind of stabilizer is non-toxic, meets environmental protection requirements, and has lubricity, but the thermal stability effect is not very satisfactory, especially in hard products; rare earth thermal stabilizers are non-toxic, environmentally friendly, and also It has the function of brightening, weather resistance, excellent insulation, coupling, toughening, and compatibilization, but its thermal stability is insufficient. It is often compounded with other metal stabilizers to obtain a composite thermal stabilizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Preparation of luminescent composite heat stabilizer

[0039] Mix 500 mL0.5 mol / L europium nitrate solution with 500 mL0.5 mol / L lanthanum nitrate solution to obtain a mixed rare earth nitrate containing europium / lanthanum rare earth ions with a molar ratio of 1:1.

[0040] According to the ratio of rare earth ion: carboxylic acid molar ratio of 1:3, weigh 183 g of benzoic acid, dissolve it in 1100 mL of 85% ethanol aqueous solution at 65 °C, start stirring, and slowly add 2 mol / L NaOH solution, Adjust the pH to 8, and continue saponification with stirring at 65 °C for 0.5 h. Then add 1000 mL of mixed rare earth nitrates, react for 2 hours, filter the product, wash with water 3 to 4 times, and dry at 90 °C to obtain europium / lanthanum benzoate.

[0041] Add 100 grams of lead dibasic phosphite, 300 grams of tribasic lead sulfate, 180 grams of epoxy calcium oleate soap, 100 grams of epoxy zinc oleate soap, 200 grams of europium / lanthanum benzoate into the kneader in a...

Embodiment 2

[0047] 1. Preparation of luminescent composite heat stabilizer

[0048]Mix 250 mL of 0.5 mol / L terbium nitrate solution with 750 mL of 0.5 mol / L yttrium nitrate solution to obtain mixed rare earth nitrates containing terbium / yttrium rare earth ions with a molar ratio of 1:3. According to the rare earth ion: carboxylic acid molar ratio of 1:3, weigh 267 g of p-tert-butylbenzoic acid, dissolve it in 1200 mL of 80% ethanol aqueous solution at 60 °C, start stirring, and slowly add 2 mol / L NaOH solution, adjust the pH to 7.5, and continue to saponify at 70 °C for 1 h. Add 1000 mL of mixed rare earth nitrates, react for 2 h, filter the product, wash with water 3 to 4 times, and dry at 90 °C to obtain terbium / yttrium p-tert-butylbenzoate.

[0049] Add 300 grams of dibasic lead phosphite, 100 grams of tribasic lead sulfate, 100 grams of epoxy calcium soybean oleate, 220 grams of epoxy zinc soybean oleate, 180 grams of p-tert-butylbenzene into the kneader in a certain proportion Terb...

Embodiment 3

[0055] 1. Preparation of luminescent composite heat stabilizer

[0056] Same as in Example 1, a luminescent composite thermal stabilizer was prepared.

[0057] , Preparation of PVC photoluminescent film material

[0058] In the high-speed kneader, add 100 parts of PVC resin, 2 parts of luminescent composite heat stabilizer, 1.0 parts of butyl stearate, 0.5 parts of ester wax, and 50 parts of bis(2-ethylhexyl) phthalate; The kneading temperature is 110°C, kneading for 10 minutes, the kneaded mixture is placed in the hopper of the twin-screw extruder, the temperature of the rear section of the twin-screw extruder barrel is controlled at 150~160°C, the middle section temperature is 165~175°C, and the rear section temperature 165~175 ℃, head temperature 170 ℃, extruding, down blowing, and laminating to make PVC photoluminescent soft film material.

[0059] The PVC photoluminescence soft film material prepared by the present invention, relative density: 1.3 ± 0.1g / cm 3 , water c...

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Abstract

The present invention relates to the technical field of polymer, and more particularly relates to a preparation method for a PVC photoluminescence film by using a PVC composite heat stabilizer having luminescence property and stability. The PVC photoluminescence film is prepared by 100 parts by weight of PVC, 2-5 parts by weight of a luminescence composite heat stabilizer, 10-80 parts by weight of a plasticizer, 0-10 parts by weight of calcium carbonate, and 0.5-2 parts by weight of a lubricant. The preparation method for the PVC photoluminescence soft film of the present invention has the advantages that the preparation method is simple, the prepared material has a relative density of 1.3+ / -0.1g / cm<3> and a moisture content of no more than 0.2%, the stretched strength of the film (longitudinal / transverse) is no less than 19MPa, breaking elongation of the film (longitudinal / transverse) is no less than 250%, the right-angled tear strength (longitudinal / transverse) is no less than 35kN / m, etc.

Description

technical field [0001] The invention relates to the technical field of polymers, and more specifically relates to a method for preparing a PVC photoluminescence soft film by using a PVC composite thermal stabilizer with luminescence and stability properties. Background technique [0002] Polyvinyl chloride (PVC), as one of the five general-purpose plastics, has gradually developed into one of the main chemical building materials in the 21st century due to its good flame retardancy, chemical corrosion resistance, wear resistance, electrical insulation, and low price. , the global PVC market demand is growing rapidly, and varieties of PVC heat stabilizers are also emerging. At present, the heat stabilizers commonly used for PVC include lead salts, metal soaps, organic tin and rare earth heat stabilizers. Lead salts such as tribasic lead sulfate and dibasic lead phosphite are the earliest and most widely used heat stabilizers. They have excellent thermal stability and low pric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/02C08K3/26C08K5/098C08K3/30C08K5/1515C09K11/06
Inventor 凌启淡林美娟
Owner FUJIAN NORMAL UNIV
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