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A kind of pvc/modified pbt lining material composite profile preparation method

A technology of composite profiles and modified materials, applied in the direction of window/door frame, wing frame, etc., can solve the problems of restricted use, easy cracking, product surface overflow, etc., and achieve the effect of increasing wind pressure resistance and small creep.

Active Publication Date: 2015-09-23
HARBIN ZHONGDA PROFILE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, steel and aluminum have entered the market successively as lining materials for profiles. However, this material is often oxidized due to the influence of organic gases in the atmosphere, causing corrosion spots on the surface of the product. The building is load-bearing and easy to crack when used at low temperature, which limits the use of this product on buildings to a certain extent

Method used

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  • A kind of pvc/modified pbt lining material composite profile preparation method
  • A kind of pvc/modified pbt lining material composite profile preparation method
  • A kind of pvc/modified pbt lining material composite profile preparation method

Examples

Experimental program
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Embodiment

[0021] Example formulation:

[0022]

[0023] The performance index of a kind of PVC / modified PBT lining material composite profile produced by this process parameter and equipment is as follows:

[0024]

[0025] According to the above experimental data, it is shown that different material ratios can be selected to obtain PBT modified materials with different properties. Compared with Example 3, Example 4 has high rigidity, high heat distortion temperature and low elongation at break. By combining the above comparative data According to the material requirements of composite doors and windows, a formula with the closest comprehensive mechanical properties is selected as the final production formula of door and window lining material modified PBT and a new weather-resistant, low-temperature reinforced structural composite profile production process.

[0026] figure 1 : profile section, 1—modified PVC material, 2—modified PBT material

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Abstract

The invention discloses a PVC (Polyvinyl Chloride) / modified PBT (Polybutylece Terephthalate) lining material composite section and a preparation method. The PVC / modified PBT lining material composite section is characterized in that PBT is reinforced and modified, is extruded with a PVC section in a cavity together and is compositely formed to substitute a reinforced section. Compounding with the PVC section can be realized through a co-extrusion process, so that mounting steps of a metal lining are simplified, the effect is improved, and the production cost is greatly reduced. A modified material comprises the following components in parts by weight: 75-84 parts of PBT resin, 15-30 parts of glass fiber reinforcing agent, 0.1-0.3 part of lubricating agent, 1.0-1.4 parts of dispersant, 0.5-1 part of processing flow modifier (AMS), 0.5-0.7 part of anti-aging agent and 1-3 parts of low-temperature modified toughening agent.

Description

technical field [0001] The invention relates to a PVC / modified PBT lining material composite profile and a preparation method. The glass fiber reinforced PBT modified material is used as the composite material of the PVC profile lining, and two extruders are used to jointly extrude PVC and PBT. The modified material is compounded and molded by the same machine head to produce a new weather-resistant and reinforced structural composite profile used at low temperature. Background technique [0002] With the development of industrial technology, the requirements for building materials are getting higher and higher. The properties to be improved include: as a building material, PVC profiles are required to have higher rigidity, wind pressure resistance, and low-temperature reinforcement, etc., so that the deformation of the plastic profile under load is minimized; the warpage and deflection of the finished product are smaller, and it is more in line with the design Tolerance; e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L51/06C08L25/04C08K13/04C08K7/14C08K5/103C08J5/04E06B1/04E06B3/08
Inventor 胡大忠张凤兰刘晓华齐贵馥王玉杜东光胡鑫
Owner HARBIN ZHONGDA PROFILE TECH
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