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Hard PVC material composition and its preparation method and application

A PVC material and composition technology, applied in the field of material processing, can solve the problems of high cost and insufficient hardness of rigid PVC materials, and achieve the effect of realizing hardness, heat resistance and cold resistance.

Active Publication Date: 2018-09-11
无锡宏义高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to address the problems of high cost and insufficient hardness of rigid PVC materials. The primary purpose of the present invention is to provide a rigid PVC material with low cost and strong hardness.

Method used

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  • Hard PVC material composition and its preparation method and application
  • Hard PVC material composition and its preparation method and application
  • Hard PVC material composition and its preparation method and application

Examples

Experimental program
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preparation example Construction

[0033] The preparation method of the rigid PVC material composition that the embodiment of the present invention provides comprises the following steps:

[0034] Mixing the PVC, stabilizer, processing aid, modifier, lubricant, filler, and colorant to obtain a mixed material;

[0035] The mixed material is extruded after shearing and pre-plasticizing in a screw extruder, the extruded material is plasticized in an open mill, and then pressed into a tablet by a calender, drawn out by a stretching machine, cooled and shaped, and rolled, that is Obtain the rigid PVC material composition.

[0036] In the above-mentioned preparation method: the equipment used for mixing is a thermal mixer, and the mixing time is 5-10min; the screw extruder is a planetary screw extruder, and the temperature of the screw extruder is 150-180° C.; The melting temperature is 130-160°C. In this preparation method, the equipment and parameters adopted are all screened by the inventor based on the formula ...

Embodiment 1

[0040] Embodiment 1 provides a kind of rigid PVC material composition and its preparation method, application, specifically:

[0041] Take various raw materials according to the mass parts shown in Table 1;

[0042] Fully mix PVC, heat stabilizer, plasticizer, processing aid, modifier, lubricant, filler and colorant in a hot mixer for 5-10 minutes to obtain a mixed material;

[0043] The mixed material is extruded through a planetary screw extruder at a temperature of 150-180°C, sheared and pre-plasticized, and further plasticized in an open mill at a temperature of 130-160°C, then pressed into a tablet by a calender, and drawn out by a stretching machine. , cooling and shaping, and winding to obtain a PVC hard material composition.

[0044] The PVC hard material composition provided in this embodiment can be used to prepare cooling tower packing.

[0045] Embodiments 2-7 respectively provide a rigid PVC material composition and its preparation method and use. The preparatio...

Embodiment 8

[0049] Embodiment 8 and Embodiment 9 are variations of Embodiment 1, and the only difference lies in the raw material formula of the rigid PVC material composition, as shown in Table 2 below.

[0050] Table 2

[0051]

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Abstract

The invention provides a hard PVC material composition, and a preparation method and a use thereof. The composition is prepared from, by mass, 100 parts of PVC, 0.5-20 parts of a stabilizer, 0-10 parts of a plasticizer, 0.5-10 parts of a processing aid, 0.5-10 parts of a modifier, 0.1-5 parts of a lubricant, 1-30 parts of a filler and 0-5 parts of a pigment, wherein a weight ratio of a new PVC material to a recovered PVC material in the PVC is (7-10):1. Compared with the prior art, the preparation method reduces the cost and increases the hardness through adding the recovered material into thePVC and optimizing the ratio of the new material to the recovered material.

Description

technical field [0001] The invention relates to the technical field of material processing, in particular to a rigid PVC material composition and a preparation method and application thereof. Background technique [0002] At present, cooling towers are widely used in air conditioning cooling systems, refrigeration series, electric furnaces, injection molding, tanning, power generation, steam turbines, aluminum profile processing, air compressors, industrial water cooling and other fields. Its function is to exchange heat between the cooling water carrying waste heat and the air in the tower, so that the waste heat is transferred to the air and scattered into the atmosphere. And the cooling process of water in the cooling tower is mainly carried out in the filler, and the cooling effect of the cooling tower depends to a large extent on the heat exchange performance of the filler. Metals are commonly used as cooling tower fillers, but metal fillers have the disadvantages of b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L91/00C08L51/04C08L33/12C08K5/57C08K5/098C08K3/22C08K13/02C08K3/26F28F25/08
Inventor 赖仲平张焱凡永德高初林刘宇亮张红杰张秀林刘炅矗
Owner 无锡宏义高分子材料科技有限公司