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Novel slow-release stabilizer applied to PVC (polyvinyl chloride) hard foamed sheet

A foamed sheet and stabilizer technology, which is applied in the field of PVC rigid foamed sheet stabilizer, can solve the problem of high stability and achieve the effects of strong thermal stability, high cost performance, and slow degradation speed

Inactive Publication Date: 2021-01-22
广东宝利兴科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a new slow-release stabilizer applied to PVC rigid foam boards, which solves the lack of a stabilizer in the prior art that is high in stability, appropriate in cost, and can also improve PVC growth. The heat resistance of foam board is specially used for the production of stabilizer for PVC foam board

Method used

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  • Novel slow-release stabilizer applied to PVC (polyvinyl chloride) hard foamed sheet

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Effect test

Embodiment

[0037] A new slow-release stabilizer applied to PVC rigid foamed sheet adopts raw materials comprising the following weight percentages:

[0038] Zinc stearate 35%;

[0039] Calcium stearate 5%;

[0040] Syke 10%;

[0041] Uracil 2%;

[0042] Ultrafine 4A zeolite 20%;

[0043] Calcium hydroxide 10%;

[0044] Antioxidant 3%;

[0045] Synergistic heat stabilizer 10%;

[0046] Polyol 5%.

[0047] Prepared by the following steps:

[0048] Step 1. Stir zinc stearate, calcium stearate, Cyclo, uracil and polyhydric alcohol in proportion at 30°C for 15 minutes;

[0049]Step 2, add zeolite and calcium hydroxide and mix and stir for 18 minutes;

[0050] Step 3. Finally, add synergistic stabilizer, antioxidant 1076 and UV-531 ultraviolet absorber, stir for 7 minutes at 75°C under the condition of nitrogen protection, and obtain PVC stabilizer after cooling;

[0051] Step 4, for the PVC stabilizer that obtains in the step 3, adopting outer diameter is 900mm, and inner hole is ...

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Abstract

The invention discloses a novel slow-release stabilizer applied to a PVC hard foamed sheet. The novel slow-release stabilizer comprises the following components in percentage by weight: 35% of zinc stearate, 5% of calcium stearate, 10% of Sika, 2% of uracil, 20% of zeolite, 10% of calcium hydroxide, 3% of an antioxidant, 10% of a synergistic heat stabilizer and 5% of polyol. The invention relatesto the technical field of PVC foamed sheet stabilizers. The novel slow-release stabilizer applied to the PVC hard foam board solves the problem that in the prior art, a stabilizer which is high in stability, proper in cost and capable of improving the heat resistance of the PVC foam board and is specially used for PVC foam board production does not exist.

Description

technical field [0001] The invention relates to the technical field of PVC foam board stabilizers, in particular to a new slow-release stabilizer applied to PVC rigid foam boards. Background technique [0002] PVC foam board has high hardness and mechanical properties. And it increases with the increase of molecular weight, but decreases with the increase of temperature. Rigid PVC has good mechanical properties, and its elastic modulus can reach 1500-3000MPa. The elasticity of soft PVC is 1.5-15MPa. But the elongation at break is as high as 200%-450%. The friction of PVC is general, the static friction coefficient is 0.4-0.5, and the dynamic friction coefficient is 0.23. The heat resistance stability of PVC foam board is very poor, it starts to decompose at 140°C, and the melting temperature is 160°C. PVC has a small coefficient of linear expansion, is flame retardant, and has an oxidation index as high as 45 or more. [0003] For the selection of stabilizers in the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K5/098C08K5/3492C08K5/20C08K7/26C08K3/22C08K5/524C08K5/526C08K5/3462C08K5/053C08K5/1515C08K9/12C08K9/10C08K13/06C08J9/00
CPCC08K5/098C08K5/34924C08K5/20C08K7/26C08K3/22C08K5/524C08K5/526C08K5/3462C08K5/053C08K5/1515C08K9/12C08K9/10C08K13/06C08J9/0095C08J9/009C08J9/0066C08J9/0023C08J9/0028C08J9/0038C08K2003/2206C08L2201/08C08L2203/18C08J2327/06C08L27/06
Inventor 李祥健徐国贤
Owner 广东宝利兴科技有限公司
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