Zinc-based tin liquid heat stabilizer and preparation method thereof
A heat stabilizer, zinc-based tin technology, applied in the field of PVC heat stabilizer and its preparation, can solve the problems of thermal stability, degradation, complex process and other problems of composite heat stabilizer, and achieve excellent thermal stability effect and excellent thermal stability function Effect
Active Publication Date: 2020-03-27
台州联成新材料有限公司
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Problems solved by technology
However, the zinc-based thermal stabilizer added in the technical scheme of this patent application is selected from one or more of calcium / zinc composite thermal stabilizers, barium / zinc composite thermal stabilizers, potassium / zinc composite thermal stabilizers, The compounding of zinc-based composite heat stabilizer needs to coordinate the ratio of the two heat stabilizers, the process is complex, and the composite heat stabilizer with poor coordination effect cannot play a role in thermal stability during PVC processing, and it is easy to cause PVC degradation
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[0032] Examples 1-5 are used to illustrate the raw material components of the zinc-based tin liquid heat stabilizer and the preparation method of the zinc-based tin liquid heat stabilizer. Zinc oxide loaded on molecular sieves is self-made, and the rest of the raw materials used are general commercially available products.
[0033] The raw material composition of zinc-based tin liquid heat stabilizer in embodiment 1-5 is shown in Table 1
[0034] The raw material component list (parts by weight) of zinc-based tin liquid heat stabilizer of table 1
[0035]
[0036] The preparation method of the zinc-based tin liquid heat stabilizer in Example 1 is described in detail below, and the preparation method of the zinc-based tin liquid heat stabilizer in Examples 2-5 is the same as that of Example 1. The preparation method of zinc-based tin liquid heat stabilizer comprises the steps:
[0037] Step 1, preparing molecular sieve-loaded zinc oxide, using 4A molecular sieve, the avera...
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Abstract
The invention discloses a zinc-based tin liquid heat stabilizer and a preparation method thereof. The zinc-based tin liquid heat stabilizer is prepared from the following raw materials in parts by weight: 20-50 parts of organic tin, 10-20 parts of sulfydryl carboxylate, 10-20 parts of an epoxy compound, 10-20 parts of phosphite ester and 2-10 parts of zinc oxide, wherein the zinc oxide is molecular sieve loaded zinc oxide. The zinc-based tin liquid heat stabilizer comprises an organic tin heat stabilizer and a zinc-based heat stabilizer, the heat stabilizing effect is excellent, the zinc-basedheat stabilizer is a single zinc-based stabilizer, and coordination compounding for the composite stabilizer by adopting the zinc-based composite stabilizer and the PVC degradation caused by poor compounding are avoided.
Description
technical field [0001] The invention relates to a PVC heat stabilizer and a preparation method thereof, in particular to a zinc-based tin liquid heat stabilizer and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) resin is one of the five general-purpose resins in the world. Due to its high mechanical strength and good chemical stability after molding, it can be widely used in construction, industry, agriculture and other fields. However, PVC resin can generally be processed and shaped above 160°C, while PVC begins to thermally decompose at 120-130°C, releasing HCl gas, and HCl can further catalyze the de-HCl reaction, presenting an accelerated de-HCl chain reaction Phenomenon. For this reason, heat stabilizers need to be added to successfully complete thermal processing. Heat stabilizers commonly used in PVC mainly include lead salts, organotins, metal soaps and rare earths. Among them, organotin is currently the best PVC heat stabiliz...
Claims
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IPC IPC(8): C08L27/06C08K13/06C08K9/12C08K3/22C08K5/57C08K5/58C08K5/37C08K5/526C08K5/1515
CPCC08K3/22C08K5/1515C08K5/37C08K5/526C08K5/57C08K5/58C08K9/12C08K13/06C08K2003/2296C08L27/06
Inventor 韦广华
Owner 台州联成新材料有限公司