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Preparation method of PVC melt-blown cloth

A technology of melt-blown cloth and PVC resin powder, which is applied in melt spinning, non-woven fabrics, rayon manufacturing, etc. It can solve problems such as narrow processing temperature, easy decomposition at high temperature, and poor PVC fluidity, so as to solve bottlenecks and expand raw materials The effect of selecting a range

Active Publication Date: 2020-11-17
JIANGSU GOLDEN MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no prior art of using PVC material to prepare melt-blown cloth. This is due to the limitations of PVC fluidity, narrow processing temperature, high temperature and easy decomposition.

Method used

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  • Preparation method of PVC melt-blown cloth
  • Preparation method of PVC melt-blown cloth
  • Preparation method of PVC melt-blown cloth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A PVC melt-blown cloth, in parts by weight, consists of the following raw material ratios:

[0037] PVC resin powder with a polymerization degree of 380-470: 100 parts

[0038] Stabilizer: 4.5 parts

[0039] Auxiliary stabilizer: 2.5 parts

[0040] Plasticizer: 30 parts

[0041] Epoxidized soybean oil: 5.0 parts

[0042] Lanthanum oxide: 10 parts

[0043] Lubricant: 0.5 parts.

[0044] The preparation process is as follows: accurately weigh each raw material according to the metering ratio, and stir and mix; heat the mixed raw materials into a melt, control the temperature of the die head to 230°C, the temperature of the hot air to 200°C, and the netting distance to 15cm. A melt-blown fiber cloth is prepared.

[0045] Such as figure 1 Shown, the present invention selects the PVC resin powder that degree of polymerization is 380-470. figure 1 A comparison chart of the flow rate of 4 kinds of PVC resin powder with different degrees of polymerization and melt-blown...

Embodiment 2

[0048] A PVC melt-blown cloth, in parts by weight, consists of the following raw material ratios:

[0049] PVC resin powder with a polymerization degree of 380-470: 100 parts

[0050] Stabilizer: 4 parts

[0051] Auxiliary stabilizer: 2 parts

[0052] Plasticizer: 25 parts

[0053] Epoxidized soybean oil: 5 parts

[0054] Lanthanum oxide: 10 parts

[0055] Lubricant: 0.5 parts.

[0056] In this embodiment, the temperature of the die head is from 200° C. to 260° C. A total of 7 temperature sections are investigated, and other conditions are the same as in Embodiment 1, and the ejected PVC fibers are collected. Use a colorimeter (CIE standard, Lab mode test) to compare the yellowness of PVC fiber (b value is positive), the test results are shown in Table 1

[0057] Table 1 Relationship between die head temperature and PVC fiber yellowness

[0058]

[0059]

[0060] The test results show that: the temperature of the die head is higher than 235°C, and the PVC fiber is...

Embodiment 3

[0062] This example mainly investigates the influence of the netting distance on the preparation process of PVC meltblown cloth, among which three netting distances of 5cm, 15cm and 20cm are selected, and the others are the same as in Example 1. For statistical results, see figure 2 (a)-(c).

[0063] It can be seen from the figure that the average diameter of PVC fibers tends to increase as the netting distance increases. When the web forming distance is 15 cm, the proportion of PVC fiber diameter below 20 μm reaches 94%, and the PVC fiber diameter below 20 μm accounts for 85% and 82% respectively at the web forming distance of 5 cm and 20 cm. Therefore, the netting distance is selected to be 15cm.

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Abstract

The invention discloses PVC melt-blown cloth. The PVC melt-blown cloth is formed by the following raw materials including, by weight, 100 parts of PVC resin powder with the polymerization degree of 380-470, 3.5-4.5 parts of a stabilizer, 1.5-2.5 parts of an auxiliary stabilizer, 20-30 parts of a plasticizer, 4-6 parts of epoxidized soybean oil, 5-15 parts of lanthanum oxide and 0.4-0.6 part of a lubricant. The melt-blown cloth material meeting the medical standard is prepared by selecting the specific raw material ratio and a process system, the bottleneck of melt-blown cloth production is solved, and the raw material selection range of the melt-blown cloth is expanded.

Description

technical field [0001] The invention belongs to the technical field of meltblown cloth preparation, and in particular relates to a preparation method of PVC meltblown cloth. Background technique [0002] Melt blown cloth mainly uses polypropylene as the main raw material, and the fiber diameter can reach 1-5 microns. There are many voids, fluffy structure, and good wrinkle resistance. The ultrafine fibers with unique capillary structure increase the number and surface area of ​​fibers per unit area, so that the melt blown cloth has good filterability, shielding, heat insulation and oil absorption. It can be used in air and liquid filter materials, isolation materials, absorption materials, mask materials, thermal insulation materials, oil absorption materials and wiping cloths and other fields. [0003] With the increasing demand for melt-blown cloth in the field of public health, the supply of melt-blown cloth is in short supply, which is mainly due to the fact that the ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/542D04H1/56D01F6/48D01F1/10D01D5/098
CPCD04H1/542D04H1/56D01D5/0985D01F6/48D01F1/10Y02P70/62
Inventor 谢四海王景清张裕刚姜昆
Owner JIANGSU GOLDEN MATERIAL TECH