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PVC modified material and method for preparing same

A technology for modifying materials and processing modifiers, which is applied in the field of PVC modified materials and its preparation, which can solve the problems of limited use, high material cost, and decreased weather resistance, so as to improve the ability to resist deformation and improve heat resistance , Excellent weather resistance

Inactive Publication Date: 2009-01-07
广东波斯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 200410082310.9 uses ABS to increase the heat-resistant deformation temperature of PVC, but the adverse consequence is that the weather resistance performance is greatly reduced, and the use in sunlight is greatly restricted.
Some foreign companies use AMSAN (α-methylstyrene-acrylonitrile) copolymer to improve the heat resistance of PVC, but its material cost is high, which has a great impact on the cost of the final product, and customers often find it difficult to accept

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0032] In Examples 1 to 3, SAN and a compatibilizer were added on the basis of the common filled PVC modified material formula (Comparative Example 1). The basic formula and performance indicators of the material are shown in Table 1.

[0033] The preparation process of the material is as follows: pre-mix the components uniformly in a high-speed mixer according to the above formula, and then use a single-screw extruder to melt and granulate, and the temperature of the extruder is set at 160-195°C.

[0034] The performance test method of the material: the above-mentioned pellets are injected into the color plate and the standard sample strip by the injection molding machine, according to the national standard GB 1843-1996, GB / T1634.2-2004, GB / T16422.3-1997, GB 3979-83 The impact strength, heat-resistant deformation temperature and color difference after accelerated aging by ultraviolet light were measured respectively.

[0035] Table 1

[0036] Material / Item

[0037]...

Embodiment 4～6

[0040] In Examples 4 to 6, SAN and a compatibilizer were added on the basis of the foamed PVC modified material formula (Comparative Example 2). Table 2 shows the basic formula and performance indicators of the material.

[0041] The preparation process of the material is: according to the above formula, the components are mixed evenly in a high-speed mixer, and the temperature is set at 80-120°C, and the foamed sheet is prepared by extruder molding, and the extrusion molding temperature is set at 160-120°C. 195°C.

[0042] The performance test method of the material is carried out according to Examples 1-3.

[0043] Table 2

[0044] Material / Item

[0045] calcium carbonate

[0046] It can be seen from the results in Table 2 that the thermal deformation resistance of the PVC foam material prepared by the present invention is significantly improved, and the impact strength and weather resistance remain basically unchanged.

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Abstract

The utility model discloses a PVC modified material and a preparation method thereof; the PVC modified material consists of components with the following weight portions: 100 portions of PVC, 2 portions to 100 portions of SAN, 0.2 portion to 30 portions of compatibilizer, 1 portion to 10 portions of processing modifier, 5 portions to 80 portions of inorganic filler, 0 portion to 10 portions of heat stabilizer, 0 portion to 10 portions of lubricant, 0 portion to 10 portions of anti-oxidant, and 0 portion to 5 portions of foaming agent. In the utility model, the SAN is adopted as the modifying component and maleic anhydride multipolymer is added as the compatibilizer to modify the PVC. The SAN has quite high heat resistant deformation temperature; the maleic anhydride multipolymer compatibilizer can effectively improve the interfacial bonding force between matrix resin and the inorganic filler, so as to further improve the deformation resistant capability of the material. The molecular structures of the SAN and the compatibilizer are not provided with unsaturated double bonds, have not significant impact on the weatherproof performance of the PVC blending modified material and are suitable to be used on occasions with requirement for the weatherproof performance. The prepared PVC modified material has obviously improved weatherproof performance, is excellent in weatherproof and low in cost.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a PVC modified material and a preparation method thereof. Background technique [0002] As a general-purpose plastic, polyvinyl chloride (PVC) has the advantages of flame retardancy, self-extinguishing, good electrical insulation performance, flexible formula, easy coloring, and excellent weather resistance. It has been used in building materials, daily necessities, wires and cables, It is widely used in pharmaceutical packaging, chemical equipment and agricultural film and other fields. PVC has excellent weather resistance, low price, sufficient supply of raw materials, and can produce profiles, plates, sheets and pipes with rich colors and various types. It has a good competitive advantage in the field of construction and decoration materials, and its market potential is huge. [0003] PVC products used for building decoration materials often have to withstand high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K3/36C08L33/08C08K3/00
Inventor 阳范文卢俊文
Owner 广东波斯科技股份有限公司
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