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One-kettle continuously step-by-step synthesized calcium zinc composite stabilizer

A calcium-zinc composite and segmented synthesis technology, which is applied in the field of plastic additives, can solve problems such as unstable quality, poor product stability, and high labor intensity, and achieve the effects of strong product controllability, no dust flying, and labor saving

Active Publication Date: 2013-10-30
吴旅良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these two methods have defects. The first method has many processes and needs to be completed in several kettles one after another. The labor intensity is high, the stability of the product is poor, water consumption, electricity consumption, gas consumption, and high cost.
Although the second method reduces the process compared with the first method, there are still many processes, water consumption, power consumption, gas consumption, high cost and unstable quality.

Method used

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  • One-kettle continuously step-by-step synthesized calcium zinc composite stabilizer

Examples

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Effect test

Embodiment 1

[0012] Embodiment 1: Calcium-zinc composite stabilizer applied to PVC pipes

[0013] The preparation process of the stabilizer: 25 parts of fatty acid, 12 parts of calcium hydroxide, 10 parts of zinc oxide, 2.7 parts of hydrogen peroxide and glacial acetic acid mixed solution (molar ratio 5:1~8:1) were weighed respectively by molar parts, and the fatty acid Put it into the reaction kettle and heat it to dissolve (the melting temperature at this time is controlled between 60°C-80°C), and then add zinc oxide under the conditions of stirring speed of 80-150 rpm and reaction temperature of 110°C-130°C. And control the adding speed of the mixed solution of catalyst hydrogen peroxide and glacial acetic acid, add calcium hydroxide after the first step of reaction, the reaction temperature at this time is controlled at 140°C-150°C, and the stirring speed should be adjusted according to the viscosity of the material during the stirring reaction. After the reaction is completed and ...

Embodiment 2

[0015] Embodiment 2: Calcium-zinc composite stabilizer applied to PVC wire and cable materials

[0016] The preparation process of the stabilizer: 30 parts of fatty acid, 10 parts of calcium hydroxide, 20 parts of zinc oxide, 3.3 parts of hydrogen peroxide and glacial acetic acid mixed solution (molar ratio 5:1~8:1) were weighed respectively by molar parts, and the fatty acid Put it into the reaction kettle and heat it to dissolve (the melting temperature at this time is controlled between 60°C-80°C), and then add zinc oxide under the conditions of stirring speed of 80-150 rpm and reaction temperature of 110°C-130°C. And control the adding speed of the mixed solution of catalyst hydrogen peroxide and glacial acetic acid, add calcium hydroxide after the first step of reaction, the reaction temperature at this time is controlled at 140°C-150°C, and the stirring speed should be adjusted according to the viscosity of the material during the stirring reaction. After the reaction is...

Embodiment 3

[0018] Embodiment 3: the calcium-zinc composite stabilizer that is applied to PVC profiled material:

[0019] The preparation process of the stabilizer: Weigh 28 parts of fatty acid, 16 parts of calcium hydroxide, 13 parts of zinc oxide, 3.0 parts of hydrogen peroxide and glacial acetic acid mixed solution (molar ratio 5:1~8:1), and weigh the fatty acid Put it into the reaction kettle and heat it to dissolve (the melting temperature at this time is controlled between 60°C-80°C), and then add zinc oxide under the conditions of stirring speed of 80-150 rpm and reaction temperature of 110°C-130°C. And control the adding speed of the mixed solution of catalyst hydrogen peroxide and glacial acetic acid, add calcium hydroxide after the first step of reaction, the reaction temperature at this time is controlled at 140°C-150°C, and the stirring speed should be adjusted according to the viscosity of the material during the stirring reaction. After the completion of the reaction, it is ...

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Abstract

The invention discloses a one-kettle continuously step-by-step synthesized calcium zinc composite stabilizer, which relates to the technical field of plastic additives. The preparation process of the stabilizer comprises the following steps: 1, adding fatty acid and then adding zinc oxide, calcium hydroxide and an auxiliary stabilizer into a kneading kettle in sequence in a kneading kettle and synthesizing continuously in two or more steps; and 2, heating and melting the fatty acid in a reaction kettle at 60-80 DEG C; adding zinc oxide and a catalyst under the condition that the stirring speed is 80-150rpm and the reaction temperature is 120-130 DEG C; adding the calcium hydroxide at the reaction temperature of 140-150 DEG C at the end of the first step of the reaction; after the reaction is finished, adding ternary hydrotalcite, stearoylbenzoylmethane or dibenzoyl methane, high-epoxy-value epoxidized soybean oil, polyethylene wax or phosphorous acid ester, pentaerythritol ester or polypentaerythritol ester, antioxidant and the like in sequence, uniformly mixing, tableting and crushing to obtain the PVC (Polyvinyl Chloride) calcium zinc composite stabilizer. The stabilizer has the advantages of strong controllability, high stability, high yield and high efficiency.

Description

[0001] technical field [0002] The invention relates to the technical field of plastic additives, in particular to a calcium-zinc composite stabilizer produced by continuous and segmented synthesis in one kettle. Background technique [0003] PVC is a general-purpose plastic widely used in construction, light industry, chemical industry, electronics, aerospace, automobile, agriculture and other fields. The biggest disadvantage of PVC is its poor thermal stability. In order to inhibit the degradation of PVC during processing, it is usually necessary to add heat stabilizers during PVC processing. The main varieties of heat stabilizers currently used are lead salt stabilizers, organotin stabilizers, metal soap stabilizers, etc. Because lead salt stabilizers have greater advantages in terms of stability and cost, they have always been the first choice for heat stabilizers for PVC products. At present, lead salts are mostly used as stabilizers in domestic PVC processing. With...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/02C08K5/098C08K3/22C08K3/26C08K5/07C08K5/1515C08K5/103C08K5/524
Inventor 吴旅良
Owner 吴旅良
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