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Hydrotalcite-lanthanum stearate composite environmental protection stabilizer for PVC, and preparation method thereof

An environmentally friendly stabilizer, lanthanum stearate technology, applied in the field of PVC hydrotalcite lanthanum stearate composite environmental stabilizer and its preparation, can solve the problems of not being able to be the main stabilizer alone, low thermal stability, poor coloring, etc. Achieve the effects of improving thermal stability, shortening plasticizing time, and reducing energy consumption

Inactive Publication Date: 2016-02-03
HWASU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rare earth heat stabilizers have good thermal stability, but the early thermal stability is not high, and the initial coloring is poor, so they cannot be the main stabilizer alone, so their application and promotion are limited. The application of a single rare earth heat stabilizer is often difficult to meet the needs of PVC processing. Composite and multi-functional rare earth heat stabilizers have become the development trend according to the requirements of application performance

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] A PVC hydrotalcite lanthanum stearate composite environmental stabilizer, which is prepared from the following components by weight (kg): modified magnesium aluminum hydrotalcite 26, monobutyl tin trichloride 11, phenyl phosphite Diisooctyl 2, Lanthanum stearate 18, Calcium adipate 7, Zinc adipate 16, Epoxidized soybean oil 3, Sorbitol 5, Resorcinol monobenzoate 3, Triethyl citrate 11 , palm wax 2, bentonite 9,

[0017] The preparation method is as follows:

[0018] (1) Preparation of modified hydrotalcite:

[0019] a. Add a certain amount of Mg(NO3)2·6H2O and Al(NO3)3·9H2O into water to form a salt solution with a total molar concentration of 0.6mol / L, and add a certain amount of NaOH and Na2CO3 into deionized water to form The total molar concentration is 0.6mol / L alkali solution, drop the alkali solution into the salt solution at a speed of 1-2 drops / s, N 2 Stir vigorously under protection, keep the constant temperature at 38-42°C, keep the pH value between 9.5 an...

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Abstract

The present invention provides a hydrotalcite-lanthanum stearate composite environmental protection stabilizer for PVC, wherein the hydrotalcite-lanthanum stearate composite environmental protection stabilizer is prepared from the following raw materials by weight: 20-30 parts of modified magnesium aluminum hydrotalcite, 10-12 parts of monobutyl tin trichloride, 1-3 parts of diisooctyl phenyl phosphite, 15-20 parts of lanthanum stearate, 6-8 parts of calcium adipate, 15-18 parts of zinc adipate, 2-4 parts of epoxidized soybean oil, 5-6 parts of sorbitol, 2-4 parts of resorcinol monobenzoate, 10-12 parts of triethyl citrate, 1-2 parts of carnauba wax, and 8-10 parts of bentonite. According to the present invention, the PVC stabilizer has characteristics of good thermal stability, good processing performance, environmental protection, no toxicity, low cost, good plasticity and balance torque reducing during the PVC processing process, and low cost.

Description

technical field [0001] The invention relates to the field of PVC additives, in particular to a PVC hydrotalcite lanthanum stearate composite environment-friendly stabilizer and a preparation method thereof. Background technique [0002] With its superior physical properties and low cost, PVC is widely used in chemical industry, materials, machinery, agriculture, daily necessities and other fields, especially in the field of plastics, and is known as one of the five general-purpose plastics. However, PVC has a very important defect, that is, it is easy to decompose and generate HCl gas during thermal processing, and self-catalysis leads to severe degradation of PVC, which affects various properties of PVC products, such as discoloring PVC products or reducing its mechanical properties. In order to overcome this defect of PVC, it is mainly to add an appropriate amount of stabilizer during the thermal processing of PVC. [0003] The only heat stabilizers that are generally ind...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L91/00C08L91/06C08K13/06C08K9/04C08K3/22C08K3/26C08K5/526C08K5/098C08K3/34C08K5/11C08K5/57
Inventor 王圣茂丘永桂宋开生高旭李毅徐明肖独山孙荣兴
Owner HWASU
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