Production technique of low-density high-pressure polyethylene closed-cell foamed plastics plate
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A high-pressure polyethylene and foam plastic board technology, which is applied in applications, household utensils, flat products, etc., can solve the problems of short service life, poor impact resistance, unstable performance, etc., and achieve long service life, low surface water absorption, The effect of superior aging resistance
Active Publication Date: 2009-01-07
衡水大禹工程橡塑科技开发有限公司
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[0002] Asphalt or asphalt wood boards are generally used for the joint boards of the existing concrete road expansion joints and road bridge joints, which have high expansion coefficient, low elongation, poor impact resistance, unstable performance, and short service life. Inconvenient construction, easy to flow in hot weather, easy to crack in winter, serious pollution and other defects
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Embodiment L-600
[0047] Embodiment L-600 test result:
[0048] Recovery rate 97.3%, elongation rate 226 (unbroken), impermeability 5 (unpenetrated), corrosion resistance (30% hydrochloric acid, 30% sulfuric acid, 15% caustic soda, gasoline, diesel, toluene) - no change, resistance Heat resistance - no change, cold resistance - no change, erosion resistance - no change, high and low temperature resistance change - no change, density 120kg / m 3 ; Non-toxic.
Embodiment L-1100
[0049] Embodiment L-1100 test result:
[0050] The recovery rate is 95%, the bending load is 4.6N, the water absorption rate is 3.1%, the tensile strength is 0.96Mpa, the elongation at break is 125%, and the impact resistance is 6.12kg / c m 2, antifreeze 150 times weight without ℃ ℃ Solvent resistance: 30% hydrochloric acid, 28-day corrosion loss of 0.22%; 30% sulfuric acid, 28-day corrosion loss of 0.22% 15%; caustic soda 15%, 28-day corrosion loss of 0.21 %; gasoline, eclipse 28 days loss %, no change; diesel oil, eclipse 28 day loss %, no change; toluene, eclipse 28 day loss 2%, capacity 126kg / m 3 ; No change.
[0051] Table 1
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[0053] Table 2
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Abstract
The invention provides a process for producing a low-density high-pressure polyethylene unicellular plastic foam board and relates to the technical field of concrete road and bridge building. The low-density high-pressure polyethylene unicellular plastic foam board is manufactured of the following materials according to a certain proportion by mixing, laminating, mould pressing and foaming: plastic granules, an AC or H foaming agent, a stearic acid promoting agent or a lubricant, zinc carbonate or a zinc oxide accelerant, a dicumyl peroxide DCP crosslinking agent, carbamide,a lead sulfate tribasic stabilizer, an antioxidant and carbon black. The process solves the long-term technical problem to be solved. The low density high pressure polyethylene unicellular plastic foam board has the advantages of low density, high recovery ratio, independent bubble structure, low water absorbing capacity of surface, good anti-penetrating quality, corrosion resistance to acid, alkali, salt, oil, etc., excellent ageing-resistant performance, no flow at the high temperature, no embrittlement cracking at the low temperature, high recovery ratio, long service life, easy construction, material conservation, light weight, good manufacturability, no toxicity or pollution, and broad application range.
Description
technical field [0001] The invention relates to the technical field of concrete road bridge construction. Background technique [0002] Asphalt or asphalt wood boards are generally used for the joint boards of the existing concrete road expansion joints and road bridge joints, which have high expansion coefficient, low elongation, poor impact resistance, unstable performance, and short service life. Inconvenient construction, easy to flow in hot weather, easy to crack in winter, serious pollution and other defects. This has always been a major technical problem that people have long wanted to solve but cannot solve well. Contents of the invention [0003] The purpose of the present invention is to provide a low-density high-pressure polyethylene closed-cell foamed plastic plate production process, which is characterized in that: the technical problems to be solved have been solved for a long time, and the low-density high-pressure polyethylene closed-cell foamed plastic p...
Claims
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