Method for producing noise-reduction and sound-absorption plate
A production method and technology of sound-absorbing panels, which are applied to building components, sound insulation, etc., can solve the problems of difficulty in meeting the use requirements, low tear resistance, poor water repellency, etc., and achieve high tear strength, avoid pollution, and repel water. strong water effect
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Embodiment 1
[0028] The raw materials for making noise-reducing and sound-absorbing panels are: 1 part of NBR rubber, 1.2 parts of PVC, 1.8 parts of aluminum hydroxide, 1.5 parts of foaming agent ADC, 1 part of talc, 2.5 parts of chlorinated paraffin, 0.3 parts of carbon black, 0.01 part of anti-scorching agent CTP, 0.0.15 part of flame retardant, 0.01 part of anti-aging agent.
[0029] The production is carried out according to the following steps:
[0030] a. One-time mixing: Put the raw materials into the internal mixer chamber one by one, mix for 15 minutes at a temperature of 150°C, then open the discharge door, drop the agglomerated rubber into the mixer through the chute, and then mix Re-mix the rubber on the machine for 5 minutes to cool down to 70°C, cool the re-mixed rubber, cut into strips, cut into strips, and stack them in sequence;
[0031] b. Secondary mixing: Put the cut strips in step a into a skip-type internal mixer for mixing for 80 seconds, unload, put the discharged materia...
Embodiment 2
[0041] The difference between this embodiment and the above-mentioned embodiments is that the raw materials for making noise-reducing and sound-absorbing panels are 1 part of NBR rubber, 1 part of PVC, 1.8 parts of aluminum hydroxide, 1.2 parts of foaming agent ADC, 0.8 parts of talcum powder, and chlorinated paraffin. 2 parts, 0.25 parts of carbon black, 0.01 parts of anti-scorching agent CTP, 0.12 parts of flame retardant, 0.005 parts of anti-aging agent;
[0042] During the production steps:
[0043] a. One-time mixing: Put the raw materials into the internal mixer chamber in turn, mix for 14 minutes at a temperature of 160°C, then open the discharge door, and drop the agglomerated rubber into the mixer through the chute. Re-mix the rubber on the machine for 5 minutes to cool down to 70°C, cool the re-mixed rubber, cut into strips, cut into strips, and stack them in sequence;
[0044] b. Secondary mixing: Put the cut strips in step a into the tipping bucket internal mixer for mix...
Embodiment 3
[0047] The difference between this embodiment and the foregoing embodiment lies in the following:
[0048] The raw materials for the noise reduction and sound-absorbing board are 1 part of NBR rubber, 0.01 part of butadiene rubber BR, 1.05 part of PVC, 1.2 part of aluminum hydroxide, 1.3 part of foaming agent ADC, 0.0.85 part of talc, and chlorinated 2.1 parts of paraffin wax, 0.26 parts of carbon black, 0.01 parts of anti-scorching agent CTP, 0.13 parts of flame retardant, and 0.006 parts of antioxidant;
[0049] During the production steps:
[0050] a. One-time mixing: Put the raw materials into the internal mixer chamber one by one, mix for 13 minutes at a temperature of 154°C, then open the discharge door, drop the agglomerated rubber into the mixer through the chute, and start mixing Re-mix the rubber on the machine for 5 minutes to cool down to 70°C, cool the re-mixed rubber, cut into strips, cut into strips, and stack them in sequence;
[0051] b. Secondary mixing: Put the cut...
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