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Method for applying inorganic mineral material wollastonite to PVC sheet instead of MBS resin

An inorganic mineral material, wollastonite technology, applied in the field of high-performance modification and processing of polymer materials, can solve the problems of inability to meet the requirements of mechanical properties, limited impact resistance, low impact resistance, etc., to promote the plasticity of materials. effect of chemical process, improved weather resistance, and enhanced flow properties

Pending Publication Date: 2022-02-18
大连环球矿产股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyvinyl chloride (PVC) is widely used. Pure PVC sheet resin is brittle and has poor heat resistance. The embrittlement point is only -50-60°C and the softening point is 75-85°C; It becomes hard and brittle rapidly when it is impacted, and it is extremely brittle when it is impacted. The notch impact resistance of pure rigid PVC sheet is only 3-5kJ / m 2 , can not meet the mechanical performance requirements of the current market products, so the current PVC sheet products need to add a certain amount of additives in the process of processing to improve the impact resistance
Methyl methacrylate-butadiene-styrene terpolymer (MBS) is a commonly used impact modifier. By adding MBS resin, the effect of toughening hard sheets can be achieved, but MBS resin Butadiene containing unsaturated structure is susceptible to aging by oxygen and ultraviolet rays, so the weather resistance is poor, and the improvement of impact resistance is also limited

Method used

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  • Method for applying inorganic mineral material wollastonite to PVC sheet instead of MBS resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The method that inorganic mineral material wollastonite replaces MBS resin and is applied to PVC sheet comprises the following steps:

[0022] S1, take CaSiO 3 The mass content is 90%, the particle size is X 50 Wollastonite micro-nano powder with an aspect ratio of 5um and an aspect ratio of 12:1 is added with 2% of its mass silane coupling agent, the modification temperature is controlled at 80°C, and the modification time is 20 minutes.

[0023] S2. Cooperate the modified wollastonite powder obtained in step S1 with other raw materials, including: 100 parts of PVC resin, 0 part of MBS resin, 20 parts of modified wollastonite powder, 3 parts of organotin stabilizer, PE 0.2 parts of wax, 3 parts of chlorinated polyethylene, 5 parts of fatty acid amide synthetic lubricant, and 0.6 parts of high-pressure polyethylene.

[0024] S3. Add the raw materials and additives of step S2 into a high-speed mixer for dispersion and mixing. The high-speed mixer mixes at a stirring sp...

Embodiment 2

[0028] The method that inorganic mineral material wollastonite replaces MBS resin and is applied to PVC sheet comprises the following steps:

[0029] S1, take CaSiO 3 The mass content is 90%, the particle size is X 50 Wollastonite micro-nano powder with an aspect ratio of 5um and an aspect ratio of 12:1 is added with 2% of its mass silane coupling agent, the modification temperature is controlled at 80°C, and the modification time is 20 minutes.

[0030] S2. Cooperate the modified wollastonite powder obtained in step S1 with other raw materials, including: 100 parts of PVC resin, 6 parts of MBS resin, 14 parts of modified wollastonite powder, 3 parts of organotin stabilizer, PE 0.2 parts of wax, 3 parts of chlorinated polyethylene, 5 parts of fatty acid amide synthetic lubricant, and 0.6 parts of high-pressure polyethylene.

[0031] S3. Add the raw materials and additives of step S2 into a high-speed mixer for dispersion and mixing. The high-speed mixer mixes at a stirring s...

Embodiment 3

[0035] The method that inorganic mineral material wollastonite replaces MBS resin and is applied to PVC sheet comprises the following steps:

[0036] S1, take CaSiO 3 The mass content is 90%, the particle size is X 50 5um, wollastonite micro-nano powder with an aspect ratio of 12:1 is added with 2% of its mass of silane coupling agent, the modification temperature is controlled at 80°C, and the modification time is 20 minutes.

[0037] S2. Cooperate the modified wollastonite powder obtained in step S1 with other raw materials, including: 100 parts of PVC resin, 12 parts of MBS resin, 8 parts of modified wollastonite powder, 3 parts of organotin stabilizer, PE 0.2 parts of wax, 3 parts of chlorinated polyethylene, 5 parts of fatty acid amide synthetic lubricant, 0.6 parts of high pressure polyethylene;

[0038]S3. Add the raw materials and additives of step S2 into a high-speed mixer for dispersion and mixing. The high-speed mixer mixes at a stirring speed of 550rpm for 35 mi...

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Abstract

The invention discloses a method for applying an inorganic mineral material wollastonite to a PVC sheet instead of MBS resin, wherein the total amount of the MBS resin and modified wollastonite powder accounts for 20% of the mass of PVC resin, and the MBS resin can be partially or completely replaced with the modified wollastonite powder. According to the invention, by adopting the new process method, the weather resistance of the PVC product is remarkably improved, the mechanical property is improved, and the flowing property is enhanced; the process is simple, parameters are easy to control, and industrialization is facilitated; the material plasticizing process is promoted in the technological process, and the thermal formability of the sheet is improved; the mechanical property of a new product added with wollastonite is superior to that of a PVC sheet completely added with MBS resin, and the cost is greatly reduced; and the PVC sheet added with the wollastonite is used in a packaging material, is a frosted material, has good shading performance due to the unique matte property, and has an excellent effect on storage of medicines and other commodities.

Description

technical field [0001] The invention relates to a method for applying wollastonite, an inorganic mineral material, to a PVC sheet instead of MBS resin, and belongs to the technical field of high-performance modification and processing of polymer materials. Background technique [0002] Polyvinyl chloride (PVC) is widely used. Pure PVC sheet resin is brittle and has poor heat resistance. The embrittlement point is only -50-60°C and the softening point is 75-85°C; It becomes hard and brittle rapidly when it is impacted, and it is extremely brittle when it is impacted. The notch impact resistance of pure rigid PVC sheet is only 3-5kJ / m 2 , can not meet the mechanical performance requirements of the current market products, so the current PVC sheet products need to add a certain amount of additives in the process of processing to improve the impact resistance. Methyl methacrylate-butadiene-styrene terpolymer (MBS) is a commonly used impact modifier. By adding MBS resin, the eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L27/06C08L51/04C08K9/06C08K3/34
CPCC08J5/18C08J2327/06C08J2451/04C08K9/06C08K3/34C08K2201/005C08K2201/016
Inventor 张艺梅丁学宁刘万龙贾一鸣
Owner 大连环球矿产股份有限公司
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