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PVC sheet and preparation method thereof

A technology of sheets and parts by weight, which is applied in the field of PVC sheets and its preparation, can solve problems such as low impact strength and optimization of PVC impact strength performance, achieve good compatibility, good impact strength and toughness, and improve thermal oxygen Effect of Aging Properties

Active Publication Date: 2020-02-21
温州市隆昌塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its impact strength is low, and the above-mentioned technical solutions have not significantly optimized the impact strength performance of PVC, which needs to be improved.

Method used

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  • PVC sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A PVC sheet, its raw material components are as shown in Table 1 in parts by weight.

[0049] Among them, tributyl citrate is used as internal lubricant, SG-70s is used as external lubricant, and triethylene glycol bis[3-(3,5-di-tert-butyl-4-hydroxy)phenyl]propionate is used as antioxidant .

[0050] Such as figure 1 Shown, the preparation method of this PVC sheet comprises the following steps:

[0051] S1, preparation of masterbatch: put PVC, NBR, PS and CPE into a two-roll mill and knead for 5 minutes, and the temperature of the roller surface is 160°C;

[0052] S2, hot mixing: mix masterbatch, methyl tin mercaptide, tributyl citrate, SG-70s and bis[3-(3,5-di-tert-butyl-4-hydroxy)phenyl] triethylene glycol propionate Put the ester into a thermomixer and stir to mix, the stirring speed is 1000rpm, the stirring time is 20min, and the temperature is 160°C;

[0053] S3, cold mixing: Put the mixed material after hot mixing into another hot mixer and stir and mix, the s...

Embodiment 2

[0057] A PVC sheet, its raw material components are as shown in Table 1 in parts by weight.

[0058] Among them, tributyl citrate is used as internal lubricant, SG-70s is used as external lubricant, and triethylene glycol bis[3-(3,5-di-tert-butyl-4-hydroxy)phenyl]propionate is used as antioxidant .

[0059] The preparation method of this PVC sheet comprises the following steps:

[0060] S1, preparation of masterbatch: put PVC, NBR, PS and CPE into a double-roll mill and knead for 6 minutes, and the temperature of the roller surface is 160°C;

[0061] S2, hot mixing: mix masterbatch, methyl tin mercaptide, tributyl citrate, SG-70s and bis[3-(3,5-di-tert-butyl-4-hydroxy)phenyl] triethylene glycol propionate Put the ester into a thermomixer and stir to mix, the stirring speed is 1200rpm, the stirring time is 15min, and the temperature is 160°C;

[0062] S3, cold mixing: Put the mixed material after hot mixing into another hot mixer and stir and mix, the stirring speed is 700rp...

Embodiment 3

[0066] A PVC sheet, its raw material components are as shown in Table 1 in parts by weight.

[0067] Among them, tributyl citrate is used as internal lubricant, SG-70s is used as external lubricant, and triethylene glycol bis[3-(3,5-di-tert-butyl-4-hydroxy)phenyl]propionate is used as antioxidant .

[0068] The preparation method of this PVC sheet comprises the following steps:

[0069] S1, preparation of masterbatch: put PVC, NBR, PS and CPE into a double-roll mill and knead for 6 minutes, and the temperature of the roller surface is 170°C;

[0070] S2, hot mixing: mix masterbatch, methyl tin mercaptide, tributyl citrate, SG-70s and bis[3-(3,5-di-tert-butyl-4-hydroxy)phenyl] triethylene glycol propionate Put the ester into a thermomixer and stir to mix, the stirring speed is 1200rpm, the stirring time is 15min, and the temperature is 170°C;

[0071] S3, cold mixing: Put the mixed material after hot mixing into another hot mixer and stir and mix, the stirring speed is 800rp...

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Abstract

The invention discloses a PVC sheet and a preparation method thereof, and relates to the technical field of macromolecule materials, wherein the PVC sheet comprises the following raw materials by weight: 80-90 parts of PVC, 5-6 parts of NBR, 1-3 parts of PS, 2-3 parts of methyl tin mercaptide, 1.5-3 parts of an internal lubricant, 0.5-1 part of an external lubricant, and 0.4-0.5 part of an antioxidant. According to the invention, NBR can endow the PVC board with good impact strength and good toughness, and can toughen the system, effectively improve the thermo-oxidative aging performance of the system and prolong the service life of the PVC sheet; and based on poor compatibility of PS and PVC, PS particles and a PVC matrix have an obvious interface, tiny holes exist around the PS particlesand are generated due to different shrinkage rates of two phases after melting mixing and cooling, the tiny holes deform to absorb energy when the material is impacted, and when the rigid particles are stressed and need to be separated from the matrix, the energy can be absorbed, so that the impact strength of the system is improved.

Description

technical field [0001] The invention relates to the technical field of PVC polymer materials, more specifically, it relates to a PVC sheet and a preparation method thereof. Background technique [0002] Polyvinyl chloride, abbreviated as PVC in English, is a general-purpose plastic, which is obtained by polymerization of vinyl chloride monomer. PVC sheet is a kind of thermoplastic plastic material, which is a sheet-shaped material obtained by rolling PVC material through rollers. Its trim and waste can be recycled, and it is now widely used in food, medical, packaging and other fields. [0003] The Chinese patent with the publication number CN106188963A discloses a PVC sheet and its preparation process. The PVC sheet includes the following components in parts by weight: 75-95 parts of PVC resin, 2-4 parts of slip agent, 5-9 parts of reinforcement agent, 1-3 parts of stabilizer, 1-3 parts of processing aid, 0.5-1.5 parts of lubricant, 0.2-0.8 parts of compatibilizer; slip ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/02C08L25/06C08L23/28C08K5/00C08K5/58C08K5/11C08K5/134C08J5/18
CPCC08J5/18C08J2327/06C08J2409/02C08J2425/06C08J2423/28C08K5/00C08K5/58C08K5/11C08K5/1345
Inventor 周盖申张建胜
Owner 温州市隆昌塑料有限公司
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