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Formula of polyvinyl chloride (PVC) foamed sheet and preparation method thereof

A technology of foamed sheet and formula, which is applied in the field of PVC foamed sheet formulation and its preparation, can solve problems such as poor surface finish, uneven board surface, and thin crust thickness, and achieve excellent foaming effect, excellent material performance, The effect of reducing the scrap rate

Inactive Publication Date: 2013-03-27
WUHU CONCH NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a high-efficiency PVC foam board formula that solves the problems of uneven board surface, thin crust thickness, poor surface finish, low production efficiency, and low yield rate, as well as the preparation of PVC foamed boards. The method of foam board

Method used

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  • Formula of polyvinyl chloride (PVC) foamed sheet and preparation method thereof
  • Formula of polyvinyl chloride (PVC) foamed sheet and preparation method thereof
  • Formula of polyvinyl chloride (PVC) foamed sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]

[0036] After automatic metering, the various components are added to the hot mixer and mixed to 110°C. The material is cooled in the cold mixer. After cooling to 45°C, the material is transported to the mixing tank for storage and homogenization by Roots blower. After 24 hours , through the extruder under certain process conditions, plasticized and shaped, then cut and packaged.

Embodiment 2

[0038]

[0039]

[0040] After automatic metering, the various components are added to the hot mixer and mixed to 110°C. The material is cooled in the cold mixer. After cooling to 45°C, the material is transported to the mixing tank for storage and homogenization by Roots blower. After 24 hours , through the extruder under certain process conditions, plasticized and shaped, then cut and packaged.

Embodiment 3

[0042]

[0043] After automatic metering, the various components are added to the hot mixer and mixed to 110°C. The material is cooled in the cold mixer. After cooling to 45°C, the material is transported to the mixing tank for storage and homogenization by Roots blower. After 24 hours , through the extruder under certain process conditions, plasticized and shaped, then cut and packaged.

[0044] Table 1 is the performance test data of embodiment 1-3 and its comparison with prior art and industry standard

[0045]

[0046] Table 1

[0047] The standards mentioned in the above table are the standards stipulated in GB / T2463.2-1999 "Rigid Polyvinyl Chloride Low-foaming Sheet Plug Luca Law".

[0048] As shown in table 1: embodiment 1-3 all can realize the present invention, and its foaming density is lower, surface Shore hardness is high, rigidity and toughness are better in terms of material performance, and each technical index is all obviously better than existing techno...

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Abstract

The invention discloses a formula of polyvinyl chloride (PVC) foamed sheet and a preparation method thereof. The foamed sheet comprises the following components: 100 parts of PVC, 8-15 parts of calcium carbonate, 4-5 parts of stabilizer, 0.8-1.2 parts of external lubricant, 1.0-1.5 parts of internal lubricant, 3-5 parts of acrylics (ACR) processing agent, 5-10 parts of foaming modifier, 0.2-0.5 part of initiator, 0.3-0.6 part of inorganic foaming agent and 0.5-0.8 part of organic foaming agent. The invention also discloses the method for producing the PVC foaming sheet. The components are subjected to two processes of material mixing and extrusion forming and then the required sheet is produced. After the formula and the preparation method are adopted, the production operational cycle is prolonged, the production efficiency is obviously increased and the rejection rate is reduced. Meanwhile, the foaming effect is excellent and the surface of the sheet products is even and does not need to be polished. The long-standing problem of the contraction of similar products is resolved. The surface skinning hardness and the smoothness are high and the material performance is excellent. The foamed sheet can meet the use requirements of various industries of indoor door, furniture, decorative material, construction and the like.

Description

technical field [0001] The invention relates to a PVC board, specifically, to a PVC foam board formula and a preparation method thereof. Background technique [0002] PVC foam board is a new type of plastic material developed abroad in the 1970s. Due to its unique production technology, it has excellent performance and is widely used in construction, vehicles, furniture, decoration, advertising production, exhibitions, etc. Signage, city appearance and environmental protection, tourism and other industries. Hard-crust low-foaming PVC sheet is one of the materials with excellent performance. In recent years, the production of low-foaming extruded products in my country has made considerable progress, but the scale, product variety and quality are all in line with the development of my country's chemical building materials market. The situation is not suitable, and the relevant formulations, process conditions, equipment structure parameters of the extrusion foaming process an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/02C08K3/26C08J9/08C08J9/10B29B7/28
Inventor 周小川王小龙胡道余曾子恒喻庆菊王传寿
Owner WUHU CONCH NEW MATERIAL
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